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Seckill/Seckill.iml 0 → 100644
浏览文件 @ 58292899
<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="FacetManager">
<facet type="web" name="Web">
<configuration>
<descriptors>
<deploymentDescriptor name="web.xml" url="file://$MODULE_DIR$/web/WEB-INF/web.xml" />
</descriptors>
<webroots>
<root url="file://$MODULE_DIR$/web" relative="/" />
</webroots>
</configuration>
</facet>
</component>
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
</content>
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
<orderEntry type="library" scope="PROVIDED" name="Tomcat 8.5.573" level="application_server_libraries" />
<orderEntry type="module-library">
<library>
<CLASSES>
<root url="jar://$MODULE_DIR$/web/WEB-INF/lib/commons-compiler-2.7.8.jar!/" />
</CLASSES>
<JAVADOC />
<SOURCES />
</library>
</orderEntry>
<orderEntry type="module-library">
<library>
<CLASSES>
<root url="jar://$MODULE_DIR$/web/WEB-INF/lib/commons-pool2-2.4.2.jar!/" />
</CLASSES>
<JAVADOC />
<SOURCES />
</library>
</orderEntry>
<orderEntry type="module-library">
<library>
<CLASSES>
<root url="jar://$MODULE_DIR$/web/WEB-INF/lib/janino-2.7.8.jar!/" />
</CLASSES>
<JAVADOC />
<SOURCES />
</library>
</orderEntry>
<orderEntry type="module-library">
<library>
<CLASSES>
<root url="jar://$MODULE_DIR$/web/WEB-INF/lib/jedis-2.9.0.jar!/" />
</CLASSES>
<JAVADOC />
<SOURCES />
</library>
</orderEntry>
<orderEntry type="module-library">
<library>
<CLASSES>
<root url="jar://$MODULE_DIR$/web/WEB-INF/lib/log4j-1.2.17.jar!/" />
</CLASSES>
<JAVADOC />
<SOURCES />
</library>
</orderEntry>
<orderEntry type="module-library">
<library>
<CLASSES>
<root url="jar://$MODULE_DIR$/web/WEB-INF/lib/logback-access-1.1.8.jar!/" />
</CLASSES>
<JAVADOC />
<SOURCES />
</library>
</orderEntry>
<orderEntry type="module-library">
<library>
<CLASSES>
<root url="jar://$MODULE_DIR$/web/WEB-INF/lib/logback-classic-1.1.8.jar!/" />
</CLASSES>
<JAVADOC />
<SOURCES />
</library>
</orderEntry>
<orderEntry type="module-library">
<library>
<CLASSES>
<root url="jar://$MODULE_DIR$/web/WEB-INF/lib/logback-core-1.1.8.jar!/" />
</CLASSES>
<JAVADOC />
<SOURCES />
</library>
</orderEntry>
<orderEntry type="module-library">
<library>
<CLASSES>
<root url="jar://$MODULE_DIR$/web/WEB-INF/lib/slf4j-api-1.7.21.jar!/" />
</CLASSES>
<JAVADOC />
<SOURCES />
</library>
</orderEntry>
</component>
</module>
\ No newline at end of file
Seckill/out/artifacts/web_war_exploded/WEB-INF/web.xml 0 → 100644
浏览文件 @ 58292899
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<servlet>
<description></description>
<display-name>doseckill</display-name>
<servlet-name>doseckill</servlet-name>
<servlet-class>com.atguigu.SecKillServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>doseckill</servlet-name>
<url-pattern>/doseckill</url-pattern>
</servlet-mapping>
</web-app>
Seckill/out/artifacts/web_war_exploded/index.jsp 0 → 100644
浏览文件 @ 58292899
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>iPhone 13 Pro !!! 1元秒杀！！！
</h1>
<form id="msform" action="${pageContext.request.contextPath}/doseckill" enctype="application/x-www-form-urlencoded">
<input type="hidden" id="prodid" name="prodid" value="0101">
<input type="button" id="miaosha_btn" name="seckill_btn" value="秒杀点我"/>
</form>
</body>
<script type="text/javascript" src="${pageContext.request.contextPath}/script/jquery/jquery-3.1.0.js"></script>
<script type="text/javascript">
$(function(){
$("#miaosha_btn").click(function(){
var url=$("#msform").attr("action");
$.post(url,$("#msform").serialize(),function(data){
if(data=="false"){
alert("抢光了" );
$("#miaosha_btn").attr("disabled",true);
}
} );
})
})
</script>
</html>
\ No newline at end of file
Seckill/src/com/atguigu/JedisPoolUtil.java 0 → 100644
浏览文件 @ 58292899
package com.atguigu;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
public class JedisPoolUtil {
private static volatile JedisPool jedisPool = null;
private JedisPoolUtil() {
}
public static JedisPool getJedisPoolInstance() {
if (null == jedisPool) {
synchronized (JedisPoolUtil.class) {
if (null == jedisPool) {
JedisPoolConfig poolConfig = new JedisPoolConfig();
poolConfig.setMaxTotal(200);
poolConfig.setMaxIdle(32);
poolConfig.setMaxWaitMillis(100*1000);
poolConfig.setBlockWhenExhausted(true);
poolConfig.setTestOnBorrow(true); // ping PONG
jedisPool = new JedisPool(poolConfig, "192.168.44.168", 6379, 60000 );
}
}
}
return jedisPool;
}
public static void release(JedisPool jedisPool, Jedis jedis) {
if (null != jedis) {
jedisPool.returnResource(jedis);
}
}
}
Seckill/src/com/atguigu/SecKillServlet.java 0 → 100644
浏览文件 @ 58292899
package com.atguigu;
import java.io.IOException;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.Random;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.ws.soap.AddressingFeature.Responses;
/**
* 秒杀案例
*/
public class SecKillServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public SecKillServlet() {
super();
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String userid = new Random().nextInt(50000) +"" ;
String prodid =request.getParameter("prodid");
//boolean isSuccess=SecKill_redis.doSecKill(userid,prodid);
boolean isSuccess= SecKill_redisByScript.doSecKill(userid,prodid);
response.getWriter().print(isSuccess);
}
}
Seckill/src/com/atguigu/SecKill_redis.java 0 → 100644
浏览文件 @ 58292899
package com.atguigu;
import java.io.IOException;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
import org.slf4j.LoggerFactory;
import ch.qos.logback.core.rolling.helper.IntegerTokenConverter;
import redis.clients.jedis.HostAndPort;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisCluster;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import redis.clients.jedis.ShardedJedisPool;
import redis.clients.jedis.Transaction;
/**
*
*/
public class SecKill_redis {
public static void main(String[] args) {
Jedis jedis =new Jedis("192.168.44.168",6379);
System.out.println(jedis.ping());
jedis.close();
}
//秒杀过程
public static boolean doSecKill(String uid,String prodid) throws IOException {
//1 uid和prodid非空判断
if(uid == null || prodid == null) {
return false;
}
//2 连接redis
//Jedis jedis = new Jedis("192.168.44.168",6379);
//通过连接池得到jedis对象
JedisPool jedisPoolInstance = JedisPoolUtil.getJedisPoolInstance();
Jedis jedis = jedisPoolInstance.getResource();
//3 拼接key
// 3.1 库存key
String kcKey = "sk:"+prodid+":qt";
// 3.2 秒杀成功用户key
String userKey = "sk:"+prodid+":user";
//监视库存
jedis.watch(kcKey);
//4 获取库存，如果库存null，秒杀还没有开始
String kc = jedis.get(kcKey);
if(kc == null) {
System.out.println("秒杀还没有开始，请等待");
jedis.close();
return false;
}
// 5 判断用户是否重复秒杀操作
if(jedis.sismember(userKey, uid)) {
System.out.println("已经秒杀成功了，不能重复秒杀");
jedis.close();
return false;
}
//6 判断如果商品数量，库存数量小于1，秒杀结束
if(Integer.parseInt(kc)<=0) {
System.out.println("秒杀已经结束了");
jedis.close();
return false;
}
//7 秒杀过程
//使用事务
Transaction multi = jedis.multi();
//组队操作
multi.decr(kcKey);
multi.sadd(userKey,uid);
//执行
List<Object> results = multi.exec();
if(results == null || results.size()==0) {
System.out.println("秒杀失败了....");
jedis.close();
return false;
}
//7.1 库存-1
//jedis.decr(kcKey);
//7.2 把秒杀成功用户添加清单里面
//jedis.sadd(userKey,uid);
System.out.println("秒杀成功了..");
jedis.close();
return true;
}
}
Seckill/src/com/atguigu/SecKill_redisByScript.java 0 → 100644
浏览文件 @ 58292899
package com.atguigu;
import java.io.IOException;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
import org.slf4j.LoggerFactory;
import ch.qos.logback.core.joran.conditional.ElseAction;
import redis.clients.jedis.HostAndPort;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisCluster;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import redis.clients.jedis.ShardedJedisPool;
import redis.clients.jedis.Transaction;
public class SecKill_redisByScript {
private static final org.slf4j.Logger logger =LoggerFactory.getLogger(SecKill_redisByScript.class) ;
public static void main(String[] args) {
JedisPool jedispool = JedisPoolUtil.getJedisPoolInstance();
Jedis jedis=jedispool.getResource();
System.out.println(jedis.ping());
Set<HostAndPort> set=new HashSet<HostAndPort>();
// doSecKill("201","sk:0101");
}
static String secKillScript ="local userid=KEYS[1];\r\n" +
"local prodid=KEYS[2];\r\n" +
"local qtkey='sk:'..prodid..\":qt\";\r\n" +
"local usersKey='sk:'..prodid..\":usr\";\r\n" +
"local userExists=redis.call(\"sismember\",usersKey,userid);\r\n" +
"if tonumber(userExists)==1 then \r\n" +
" return 2;\r\n" +
"end\r\n" +
"local num= redis.call(\"get\" ,qtkey);\r\n" +
"if tonumber(num)<=0 then \r\n" +
" return 0;\r\n" +
"else \r\n" +
" redis.call(\"decr\",qtkey);\r\n" +
" redis.call(\"sadd\",usersKey,userid);\r\n" +
"end\r\n" +
"return 1" ;
static String secKillScript2 =
"local userExists=redis.call(\"sismember\",\"{sk}:0101:usr\",userid);\r\n" +
" return 1";
public static boolean doSecKill(String uid,String prodid) throws IOException {
JedisPool jedispool = JedisPoolUtil.getJedisPoolInstance();
Jedis jedis=jedispool.getResource();
//String sha1= .secKillScript;
String sha1= jedis.scriptLoad(secKillScript);
Object result= jedis.evalsha(sha1, 2, uid,prodid);
String reString=String.valueOf(result);
if ("0".equals( reString ) ) {
System.err.println("已抢空！！");
}else if("1".equals( reString ) ) {
System.out.println("抢购成功！！！！");
}else if("2".equals( reString ) ) {
System.err.println("该用户已抢过！！");
}else{
System.err.println("抢购异常！！");
}
jedis.close();
return true;
}
}
Seckill/web/WEB-INF/web.xml 0 → 100644
浏览文件 @ 58292899
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<servlet>
<description></description>
<display-name>doseckill</display-name>
<servlet-name>doseckill</servlet-name>
<servlet-class>com.atguigu.SecKillServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>doseckill</servlet-name>
<url-pattern>/doseckill</url-pattern>
</servlet-mapping>
</web-app>
Seckill/web/index.jsp 0 → 100644
浏览文件 @ 58292899
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>iPhone 13 Pro !!! 1元秒杀！！！
</h1>
<form id="msform" action="${pageContext.request.contextPath}/doseckill" enctype="application/x-www-form-urlencoded">
<input type="hidden" id="prodid" name="prodid" value="0101">
<input type="button" id="miaosha_btn" name="seckill_btn" value="秒杀点我"/>
</form>
</body>
<script type="text/javascript" src="${pageContext.request.contextPath}/script/jquery/jquery-3.1.0.js"></script>
<script type="text/javascript">
$(function(){
$("#miaosha_btn").click(function(){
var url=$("#msform").attr("action");
$.post(url,$("#msform").serialize(),function(data){
if(data=="false"){
alert("抢光了" );
$("#miaosha_btn").attr("disabled",true);
}
} );
})
})
</script>
</html>
\ No newline at end of file
Seckill/web/script/jquery/jquery-3.1.0.js 0 → 100644
浏览文件 @ 58292899
此差异已折叠。
jedis_redisdemo/jedis_redisdemo.iml 0 → 100644
浏览文件 @ 58292899
<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4" />
\ No newline at end of file
jedis_redisdemo/pom.xml 0 → 100644
浏览文件 @ 58292899
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.atguigu</groupId>
<artifactId>jedis_redisdemo</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>3.2.0</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>compile</scope>
</dependency>
</dependencies>
</project>
\ No newline at end of file
jedis_redisdemo/src/main/java/com/atguigu/jedis/JedisDemo1.java 0 → 100644
浏览文件 @ 58292899
package com.atguigu.jedis;
import org.junit.Test;
import redis.clients.jedis.Jedis;
import java.util.List;
import java.util.Set;
public class JedisDemo1 {
public static void main(String[] args) {
//创建Jedis对象
Jedis jedis = new Jedis("192.168.44.168",6379);
//测试
String value = jedis.ping();
System.out.println(value);
jedis.close();
}
//操作zset
@Test
public void demo5() {
//创建Jedis对象
Jedis jedis = new Jedis("192.168.44.168",6379);
jedis.zadd("china",100d,"shanghai");
Set<String> china = jedis.zrange("china", 0, -1);
System.out.println(china);
jedis.close();
}
//操作hash
@Test
public void demo4() {
//创建Jedis对象
Jedis jedis = new Jedis("192.168.44.168",6379);
jedis.hset("users","age","20");
String hget = jedis.hget("users", "age");
System.out.println(hget);
jedis.close();
}
//操作set
@Test
public void demo3() {
//创建Jedis对象
Jedis jedis = new Jedis("192.168.44.168",6379);
jedis.sadd("names","lucy");
jedis.sadd("names","mary");
Set<String> names = jedis.smembers("names");
System.out.println(names);
jedis.close();
}
//操作list
@Test
public void demo2() {
//创建Jedis对象
Jedis jedis = new Jedis("192.168.44.168",6379);
jedis.lpush("key1","lucy","mary","jack");
List<String> values = jedis.lrange("key1", 0, -1);
System.out.println(values);
jedis.close();
}
//操作key string
@Test
public void demo1() {
//创建Jedis对象
Jedis jedis = new Jedis("192.168.44.168",6379);
//添加
jedis.set("name","lucy");
//获取
String name = jedis.get("name");
System.out.println(name);
//设置多个key-value
jedis.mset("k1","v1","k2","v2");
List<String> mget = jedis.mget("k1", "k2");
System.out.println(mget);
Set<String> keys = jedis.keys("*");
for(String key : keys) {
System.out.println(key);
}
jedis.close();
}
}
jedis_redisdemo/src/main/java/com/atguigu/jedis/PhoneCode.java 0 → 100644
浏览文件 @ 58292899
package com.atguigu.jedis;
import redis.clients.jedis.Jedis;
import java.util.Random;
public class PhoneCode {
public static void main(String[] args) {
//模拟验证码发送
verifyCode("13678765435");
//模拟验证码校验
//getRedisCode("13678765435","4444");
}
//3 验证码校验
public static void getRedisCode(String phone,String code) {
//从redis获取验证码
Jedis jedis = new Jedis("192.168.44.168",6379);
//验证码key
String codeKey = "VerifyCode"+phone+":code";
String redisCode = jedis.get(codeKey);
//判断
if(redisCode.equals(code)) {
System.out.println("成功");
}else {
System.out.println("失败");
}
jedis.close();
}
//2 每个手机每天只能发送三次，验证码放到redis中，设置过期时间120
public static void verifyCode(String phone) {
//连接redis
Jedis jedis = new Jedis("192.168.44.168",6379);
//拼接key
//手机发送次数key
String countKey = "VerifyCode"+phone+":count";
//验证码key
String codeKey = "VerifyCode"+phone+":code";
//每个手机每天只能发送三次
String count = jedis.get(countKey);
if(count == null) {
//没有发送次数，第一次发送
//设置发送次数是1
jedis.setex(countKey,24*60*60,"1");
} else if(Integer.parseInt(count)<=2) {
//发送次数+1
jedis.incr(countKey);
} else if(Integer.parseInt(count)>2) {
//发送三次，不能再发送
System.out.println("今天发送次数已经超过三次");
jedis.close();
}
//发送验证码放到redis里面
String vcode = getCode();
jedis.setex(codeKey,120,vcode);
jedis.close();
}
//1 生成6位数字验证码
public static String getCode() {
Random random = new Random();
String code = "";
for(int i=0;i<6;i++) {
int rand = random.nextInt(10);
code += rand;
}
return code;
}
}
jedis_redisdemo/src/main/java/com/atguigu/jedis/RedisClusterDemo.java 0 → 100644
浏览文件 @ 58292899
package com.atguigu.jedis;
import redis.clients.jedis.HostAndPort;
import redis.clients.jedis.JedisCluster;
/**
* 演示redis集群操作
*/
public class RedisClusterDemo {
public static void main(String[] args) {
//创建对象
HostAndPort hostAndPort = new HostAndPort("192.168.44.168", 6379);
JedisCluster jedisCluster = new JedisCluster(hostAndPort);
//进行操作
jedisCluster.set("b1","value1");
String value = jedisCluster.get("b1");
System.out.println("value: "+value);
jedisCluster.close();
}
}
redis_springboot/.gitignore 0 → 100644
浏览文件 @ 58292899
HELP.md
target/
!.mvn/wrapper/maven-wrapper.jar
!**/src/main/**/target/
!**/src/test/**/target/
### STS ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache
### IntelliJ IDEA ###
.idea
*.iws
*.iml
*.ipr
### NetBeans ###
/nbproject/private/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/
build/
!**/src/main/**/build/
!**/src/test/**/build/
### VS Code ###
.vscode/
redis_springboot/mvnw 0 → 100644
浏览文件 @ 58292899
#!/bin/sh
# ----------------------------------------------------------------------------
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# ----------------------------------------------------------------------------
# ----------------------------------------------------------------------------
# Maven Start Up Batch script
#
# Required ENV vars:
# ------------------
# JAVA_HOME - location of a JDK home dir
#
# Optional ENV vars
# -----------------
# M2_HOME - location of maven2's installed home dir
# MAVEN_OPTS - parameters passed to the Java VM when running Maven
# e.g. to debug Maven itself, use
# set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
# MAVEN_SKIP_RC - flag to disable loading of mavenrc files
# ----------------------------------------------------------------------------
if [ -z "$MAVEN_SKIP_RC" ] ; then
if [ -f /etc/mavenrc ] ; then
. /etc/mavenrc
fi
if [ -f "$HOME/.mavenrc" ] ; then
. "$HOME/.mavenrc"
fi
fi
# OS specific support. $var _must_ be set to either true or false.
cygwin=false;
darwin=false;
mingw=false
case "`uname`" in
CYGWIN*) cygwin=true ;;
MINGW*) mingw=true;;
Darwin*) darwin=true
# Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
# See https://developer.apple.com/library/mac/qa/qa1170/_index.html
if [ -z "$JAVA_HOME" ]; then
if [ -x "/usr/libexec/java_home" ]; then
export JAVA_HOME="`/usr/libexec/java_home`"
else
export JAVA_HOME="/Library/Java/Home"
fi
fi
;;
esac
if [ -z "$JAVA_HOME" ] ; then
if [ -r /etc/gentoo-release ] ; then
JAVA_HOME=`java-config --jre-home`
fi
fi
if [ -z "$M2_HOME" ] ; then
## resolve links - $0 may be a link to maven's home
PRG="$0"
# need this for relative symlinks
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG="`dirname "$PRG"`/$link"
fi
done
saveddir=`pwd`
M2_HOME=`dirname "$PRG"`/..
# make it fully qualified
M2_HOME=`cd "$M2_HOME" && pwd`
cd "$saveddir"
# echo Using m2 at $M2_HOME
fi
# For Cygwin, ensure paths are in UNIX format before anything is touched
if $cygwin ; then
[ -n "$M2_HOME" ] &&
M2_HOME=`cygpath --unix "$M2_HOME"`
[ -n "$JAVA_HOME" ] &&
JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
[ -n "$CLASSPATH" ] &&
CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
fi
# For Mingw, ensure paths are in UNIX format before anything is touched
if $mingw ; then
[ -n "$M2_HOME" ] &&
M2_HOME="`(cd "$M2_HOME"; pwd)`"
[ -n "$JAVA_HOME" ] &&
JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
fi
if [ -z "$JAVA_HOME" ]; then
javaExecutable="`which javac`"
if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
# readlink(1) is not available as standard on Solaris 10.
readLink=`which readlink`
if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
if $darwin ; then
javaHome="`dirname \"$javaExecutable\"`"
javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
else
javaExecutable="`readlink -f \"$javaExecutable\"`"
fi
javaHome="`dirname \"$javaExecutable\"`"
javaHome=`expr "$javaHome" : '\(.*\)/bin'`
JAVA_HOME="$javaHome"
export JAVA_HOME
fi
fi
fi
if [ -z "$JAVACMD" ] ; then
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD="$JAVA_HOME/jre/sh/java"
else
JAVACMD="$JAVA_HOME/bin/java"
fi
else
JAVACMD="`which java`"
fi
fi
if [ ! -x "$JAVACMD" ] ; then
echo "Error: JAVA_HOME is not defined correctly." >&2
echo " We cannot execute $JAVACMD" >&2
exit 1
fi
if [ -z "$JAVA_HOME" ] ; then
echo "Warning: JAVA_HOME environment variable is not set."
fi
CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
# traverses directory structure from process work directory to filesystem root
# first directory with .mvn subdirectory is considered project base directory
find_maven_basedir() {
if [ -z "$1" ]
then
echo "Path not specified to find_maven_basedir"
return 1
fi
basedir="$1"
wdir="$1"
while [ "$wdir" != '/' ] ; do
if [ -d "$wdir"/.mvn ] ; then
basedir=$wdir
break
fi
# workaround for JBEAP-8937 (on Solaris 10/Sparc)
if [ -d "${wdir}" ]; then
wdir=`cd "$wdir/.."; pwd`
fi
# end of workaround
done
echo "${basedir}"
}
# concatenates all lines of a file
concat_lines() {
if [ -f "$1" ]; then
echo "$(tr -s '\n' ' ' < "$1")"
fi
}
BASE_DIR=`find_maven_basedir "$(pwd)"`
if [ -z "$BASE_DIR" ]; then
exit 1;
fi
##########################################################################################
# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
# This allows using the maven wrapper in projects that prohibit checking in binary data.
##########################################################################################
if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
if [ "$MVNW_VERBOSE" = true ]; then
echo "Found .mvn/wrapper/maven-wrapper.jar"
fi
else
if [ "$MVNW_VERBOSE" = true ]; then
echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
fi
if [ -n "$MVNW_REPOURL" ]; then
jarUrl="$MVNW_REPOURL/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
else
jarUrl="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
fi
while IFS="=" read key value; do
case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
esac
done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
if [ "$MVNW_VERBOSE" = true ]; then
echo "Downloading from: $jarUrl"
fi
wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
if $cygwin; then
wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
fi
if command -v wget > /dev/null; then
if [ "$MVNW_VERBOSE" = true ]; then
echo "Found wget ... using wget"
fi
if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
wget "$jarUrl" -O "$wrapperJarPath"
else
wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath"
fi
elif command -v curl > /dev/null; then
if [ "$MVNW_VERBOSE" = true ]; then
echo "Found curl ... using curl"
fi
if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
curl -o "$wrapperJarPath" "$jarUrl" -f
else
curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
fi
else
if [ "$MVNW_VERBOSE" = true ]; then
echo "Falling back to using Java to download"
fi
javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
# For Cygwin, switch paths to Windows format before running javac
if $cygwin; then
javaClass=`cygpath --path --windows "$javaClass"`
fi
if [ -e "$javaClass" ]; then
if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
if [ "$MVNW_VERBOSE" = true ]; then
echo " - Compiling MavenWrapperDownloader.java ..."
fi
# Compiling the Java class
("$JAVA_HOME/bin/javac" "$javaClass")
fi
if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
# Running the downloader
if [ "$MVNW_VERBOSE" = true ]; then
echo " - Running MavenWrapperDownloader.java ..."
fi
("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
fi
fi
fi
fi
##########################################################################################
# End of extension
##########################################################################################
export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
if [ "$MVNW_VERBOSE" = true ]; then
echo $MAVEN_PROJECTBASEDIR
fi
MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
# For Cygwin, switch paths to Windows format before running java
if $cygwin; then
[ -n "$M2_HOME" ] &&
M2_HOME=`cygpath --path --windows "$M2_HOME"`
[ -n "$JAVA_HOME" ] &&
JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
[ -n "$CLASSPATH" ] &&
CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
[ -n "$MAVEN_PROJECTBASEDIR" ] &&
MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
fi
# Provide a "standardized" way to retrieve the CLI args that will
# work with both Windows and non-Windows executions.
MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
export MAVEN_CMD_LINE_ARGS
WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
exec "$JAVACMD" \
$MAVEN_OPTS \
-classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
"-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
redis_springboot/mvnw.cmd 0 → 100644
浏览文件 @ 58292899
@REM ----------------------------------------------------------------------------
@REM Licensed to the Apache Software Foundation (ASF) under one
@REM or more contributor license agreements. See the NOTICE file
@REM distributed with this work for additional information
@REM regarding copyright ownership. The ASF licenses this file
@REM to you under the Apache License, Version 2.0 (the
@REM "License"); you may not use this file except in compliance
@REM with the License. You may obtain a copy of the License at
@REM
@REM https://www.apache.org/licenses/LICENSE-2.0
@REM
@REM Unless required by applicable law or agreed to in writing,
@REM software distributed under the License is distributed on an
@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
@REM KIND, either express or implied. See the License for the
@REM specific language governing permissions and limitations
@REM under the License.
@REM ----------------------------------------------------------------------------
@REM ----------------------------------------------------------------------------
@REM Maven Start Up Batch script
@REM
@REM Required ENV vars:
@REM JAVA_HOME - location of a JDK home dir
@REM
@REM Optional ENV vars
@REM M2_HOME - location of maven2's installed home dir
@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
@REM e.g. to debug Maven itself, use
@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
@REM ----------------------------------------------------------------------------
@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
@echo off
@REM set title of command window
title %0
@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
@if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO%
@REM set %HOME% to equivalent of $HOME
if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
@REM Execute a user defined script before this one
if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
@REM check for pre script, once with legacy .bat ending and once with .cmd ending
if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
:skipRcPre
@setlocal
set ERROR_CODE=0
@REM To isolate internal variables from possible post scripts, we use another setlocal
@setlocal
@REM ==== START VALIDATION ====
if not "%JAVA_HOME%" == "" goto OkJHome
echo.
echo Error: JAVA_HOME not found in your environment. >&2
echo Please set the JAVA_HOME variable in your environment to match the >&2
echo location of your Java installation. >&2
echo.
goto error
:OkJHome
if exist "%JAVA_HOME%\bin\java.exe" goto init
echo.
echo Error: JAVA_HOME is set to an invalid directory. >&2
echo JAVA_HOME = "%JAVA_HOME%" >&2
echo Please set the JAVA_HOME variable in your environment to match the >&2
echo location of your Java installation. >&2
echo.
goto error
@REM ==== END VALIDATION ====
:init
@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
@REM Fallback to current working directory if not found.
set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
set EXEC_DIR=%CD%
set WDIR=%EXEC_DIR%
:findBaseDir
IF EXIST "%WDIR%"\.mvn goto baseDirFound
cd ..
IF "%WDIR%"=="%CD%" goto baseDirNotFound
set WDIR=%CD%
goto findBaseDir
:baseDirFound
set MAVEN_PROJECTBASEDIR=%WDIR%
cd "%EXEC_DIR%"
goto endDetectBaseDir
:baseDirNotFound
set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
cd "%EXEC_DIR%"
:endDetectBaseDir
IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
@setlocal EnableExtensions EnableDelayedExpansion
for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
:endReadAdditionalConfig
SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
FOR /F "tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
)
@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
if exist %WRAPPER_JAR% (
if "%MVNW_VERBOSE%" == "true" (
echo Found %WRAPPER_JAR%
)
) else (
if not "%MVNW_REPOURL%" == "" (
SET DOWNLOAD_URL="%MVNW_REPOURL%/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
)
if "%MVNW_VERBOSE%" == "true" (
echo Couldn't find %WRAPPER_JAR%, downloading it ...
echo Downloading from: %DOWNLOAD_URL%
)
powershell -Command "&{"^
"$webclient = new-object System.Net.WebClient;"^
"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
"}"^
"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
"}"
if "%MVNW_VERBOSE%" == "true" (
echo Finished downloading %WRAPPER_JAR%
)
)
@REM End of extension
@REM Provide a "standardized" way to retrieve the CLI args that will
@REM work with both Windows and non-Windows executions.
set MAVEN_CMD_LINE_ARGS=%*
%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
if ERRORLEVEL 1 goto error
goto end
:error
set ERROR_CODE=1
:end
@endlocal & set ERROR_CODE=%ERROR_CODE%
if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
@REM check for post script, once with legacy .bat ending and once with .cmd ending
if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
:skipRcPost
@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
if "%MAVEN_BATCH_PAUSE%" == "on" pause
if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
exit /B %ERROR_CODE%
redis_springboot/pom.xml 0 → 100644
浏览文件 @ 58292899
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.atguigu</groupId>
<artifactId>redis_springboot</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>redis_springboot</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- redis -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<!-- spring2.X集成redis所需common-pool2-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
<version>2.6.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
redis_springboot/src/main/java/com/atguigu/redis_springboot/RedisSpringbootApplication.java 0 → 100644
浏览文件 @ 58292899
package com.atguigu.redis_springboot;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class RedisSpringbootApplication {
public static void main(String[] args) {
SpringApplication.run(RedisSpringbootApplication.class, args);
}
}
redis_springboot/src/main/java/com/atguigu/redis_springboot/config/RedisConfig.java 0 → 100644
浏览文件 @ 58292899
package com.atguigu.redis_springboot.config;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import java.time.Duration;
@EnableCaching
@Configuration
public class RedisConfig extends CachingConfigurerSupport {
@Bean
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
RedisTemplate<String, Object> template = new RedisTemplate<>();
RedisSerializer<String> redisSerializer = new StringRedisSerializer();
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
template.setConnectionFactory(factory);
//key序列化方式
template.setKeySerializer(redisSerializer);
//value序列化
template.setValueSerializer(jackson2JsonRedisSerializer);
//value hashmap序列化
template.setHashValueSerializer(jackson2JsonRedisSerializer);
return template;
}
@Bean
public CacheManager cacheManager(RedisConnectionFactory factory) {
RedisSerializer<String> redisSerializer = new StringRedisSerializer();
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
//解决查询缓存转换异常的问题
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
// 配置序列化（解决乱码的问题）,过期时间600秒
RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
.entryTtl(Duration.ofSeconds(600))
.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
.disableCachingNullValues();
RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
.cacheDefaults(config)
.build();
return cacheManager;
}
}
redis_springboot/src/main/java/com/atguigu/redis_springboot/controller/RedisTestController.java 0 → 100644
浏览文件 @ 58292899
package com.atguigu.redis_springboot.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.script.DefaultRedisScript;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.Arrays;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
@RestController
@RequestMapping("/redisTest")
public class RedisTestController {
@Autowired
private RedisTemplate redisTemplate;
@GetMapping("testLockLua")
public void testLockLua() {
//1 声明一个uuid ,将做为一个value 放入我们的key所对应的值中
String uuid = UUID.randomUUID().toString();
//2 定义一个锁：lua 脚本可以使用同一把锁，来实现删除！
String skuId = "25"; // 访问skuId 为25号的商品 100008348542
String locKey = "lock:" + skuId; // 锁住的是每个商品的数据
// 3 获取锁
Boolean lock = redisTemplate.opsForValue().setIfAbsent(locKey, uuid, 3, TimeUnit.SECONDS);
// 第一种： lock 与过期时间中间不写任何的代码。
// redisTemplate.expire("lock",10, TimeUnit.SECONDS);//设置过期时间
// 如果true
if (lock) {
// 执行的业务逻辑开始
// 获取缓存中的num 数据
Object value = redisTemplate.opsForValue().get("num");
// 如果是空直接返回
if (StringUtils.isEmpty(value)) {
return;
}
// 不是空 如果说在这出现了异常！ 那么delete 就删除失败！ 也就是说锁永远存在！
int num = Integer.parseInt(value + "");
// 使num 每次+1 放入缓存
redisTemplate.opsForValue().set("num", String.valueOf(++num));
/*使用lua脚本来锁*/
// 定义lua 脚本
String script = "if redis.call('get', KEYS[1]) == ARGV[1] then return redis.call('del', KEYS[1]) else return 0 end";
// 使用redis执行lua执行
DefaultRedisScript<Long> redisScript = new DefaultRedisScript<>();
redisScript.setScriptText(script);
// 设置一下返回值类型 为Long
// 因为删除判断的时候，返回的0,给其封装为数据类型。如果不封装那么默认返回String 类型，
// 那么返回字符串与0 会有发生错误。
redisScript.setResultType(Long.class);
// 第一个要是script 脚本 ，第二个需要判断的key，第三个就是key所对应的值。
redisTemplate.execute(redisScript, Arrays.asList(locKey), uuid);
} else {
// 其他线程等待
try {
// 睡眠
Thread.sleep(1000);
// 睡醒了之后，调用方法。
testLockLua();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
@GetMapping("testLock")
public void testLock(){
String uuid = UUID.randomUUID().toString();
//1获取锁，setne
Boolean lock = redisTemplate.opsForValue().setIfAbsent("lock", uuid,3, TimeUnit.SECONDS);
//2获取锁成功、查询num的值
if(lock){
Object value = redisTemplate.opsForValue().get("num");
//2.1判断num为空return
if(StringUtils.isEmpty(value)){
return;
}
//2.2有值就转成成int
int num = Integer.parseInt(value+"");
//2.3把redis的num加1
redisTemplate.opsForValue().set("num", ++num);
//2.4释放锁，del
//判断比较uuid值是否一样
String lockUuid = (String)redisTemplate.opsForValue().get("lock");
if(lockUuid.equals(uuid)) {
redisTemplate.delete("lock");
}
}else{
//3获取锁失败、每隔0.1秒再获取
try {
Thread.sleep(100);
testLock();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
@GetMapping
public String testRedis() {
//设置值到redis
redisTemplate.opsForValue().set("name","lucy");
//从redis获取值
String name = (String)redisTemplate.opsForValue().get("name");
return name;
}
}
redis_springboot/src/main/resources/application.properties 0 → 100644
浏览文件 @ 58292899
#Redis服务器地址
spring.redis.host=192.168.44.168
#Redis服务器连接端口
spring.redis.port=6379
#Redis数据库索引（默认为0）
spring.redis.database= 0
#连接超时时间（毫秒）
spring.redis.timeout=1800000
#连接池最大连接数（使用负值表示没有限制）
spring.redis.lettuce.pool.max-active=20
#最大阻塞等待时间(负数表示没限制)
spring.redis.lettuce.pool.max-wait=-1
#连接池中的最大空闲连接
spring.redis.lettuce.pool.max-idle=5
#连接池中的最小空闲连接
spring.redis.lettuce.pool.min-idle=0
redis_springboot/src/test/java/com/atguigu/redis_springboot/RedisSpringbootApplicationTests.java 0 → 100644
浏览文件 @ 58292899
package com.atguigu.redis_springboot;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest
class RedisSpringbootApplicationTests {
@Test
void contextLoads() {
}
}
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