🎉 update springboot-jpa-demo

springboot-jpa-demo/pom.xml

+<?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>2.6.2</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>com.cunyu</groupId>
+    <artifactId>springboot-jpa-demo</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>springboot-jpa-demo</name>
+    <description>springboot-jpa-demo</description>
+    <properties>
+        <java.version>1.8</java.version>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>druid</artifactId>
+            <version>1.2.8</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-devtools</artifactId>
+            <scope>runtime</scope>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-configuration-processor</artifactId>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <excludes>
+                        <exclude>
+                            <groupId>org.projectlombok</groupId>
+                            <artifactId>lombok</artifactId>
+                        </exclude>
+                    </excludes>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

springboot-jpa-demo/src/main/java/com/cunyu/springbootjpademo/SpringbootJpaDemoApplication.java

+package com.cunyu.springbootjpademo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SpringbootJpaDemoApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringbootJpaDemoApplication.class, args);
+    }
+
+}

springboot-jpa-demo/src/main/java/com/cunyu/springbootjpademo/controller/UserController.java

+package com.cunyu.springbootjpademo.controller;
+
+import com.cunyu.springbootjpademo.entity.User;
+import com.cunyu.springbootjpademo.repository.UserRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+/**
+ * Created with IntelliJ IDEA.
+ *
+ * @author : 村雨遥
+ * @version : 1.0
+ * @project : springboot-jpa-demo
+ * @package : com.cunyu.springbootjpademo.controller
+ * @className : UserController
+ * @createTime : 2022/1/7 10:55
+ * @email : 747731461@qq.com
+ * @微信 : cunyu1024
+ * @公众号 : 村雨遥
+ * @网站 : https://cunyu1943.github.io
+ * @description :
+ */
+
+@RestController
+@RequestMapping("/user")
+public class UserController {
+    @Autowired
+    private UserRepository userRepository;
+
+    /**
+     * 新增用户
+     *
+     * @param user
+     */
+    @PostMapping("/add")
+    public void addUser(@RequestBody User user) {
+        userRepository.save(user);
+    }
+
+    /**
+     * 根据用户 id 删除用户
+     *
+     * @param id
+     */
+    @PostMapping("/delete/{id}")
+    public void deleteUser(@PathVariable Integer id) {
+        userRepository.deleteById(id);
+    }
+
+    /**
+     * 更新用户，id 相同则更新，不同则新增
+     *
+     * @param user
+     */
+    @PostMapping("/update")
+    public void updateUser(@RequestBody User user) {
+        userRepository.save(user);
+    }
+
+    @PostMapping("/query")
+    public List<User> queryUsers() {
+        List<User> userList = userRepository.findAll();
+        return userList;
+    }
+}

springboot-jpa-demo/src/main/java/com/cunyu/springbootjpademo/entity/User.java

+package com.cunyu.springbootjpademo.entity;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+
+/**
+ * Created with IntelliJ IDEA.
+ *
+ * @author : 村雨遥
+ * @version : 1.0
+ * @project : springboot-jpa-demo
+ * @package : com.cunyu.springbootjpademo.entity
+ * @className : User
+ * @createTime : 2022/1/7 10:19
+ * @email : 747731461@qq.com
+ * @微信 : cunyu1024
+ * @公众号 : 村雨遥
+ * @网站 : https://cunyu1943.github.io
+ * @description :
+ */
+
+@Entity
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class User {
+    @Id
+    @GeneratedValue
+    @Column(name = "id")
+    private Integer id;
+    @Column(name = "username")
+    private String username;
+    @Column(name = "password")
+    private String password;
+    @Column(name = "ch_name")
+    private String chName;
+
+    public User(String username, String password, String chName) {
+        this.username = username;
+        this.password = password;
+        this.chName = chName;
+    }
+}

springboot-jpa-demo/src/main/java/com/cunyu/springbootjpademo/repository/UserRepository.java

+package com.cunyu.springbootjpademo.repository;
+
+import com.cunyu.springbootjpademo.entity.User;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Service;
+
+/**
+ * Created with IntelliJ IDEA.
+ *
+ * @author : 村雨遥
+ * @version : 1.0
+ * @project : springboot-jpa-demo
+ * @package : com.cunyu.springbootjpademo.repository
+ * @className : UserRepository
+ * @createTime : 2022/1/7 10:49
+ * @email : 747731461@qq.com
+ * @微信 : cunyu1024
+ * @公众号 : 村雨遥
+ * @网站 : https://cunyu1943.github.io
+ * @description :
+ */
+@Service
+public interface UserRepository extends JpaRepository<User, Integer> {
+}

springboot-jpa-demo/src/main/resources/application.yml

+server:
+  port: 8080
+spring:
+  datasource:
+    driver-class-name: com.mysql.cj.jdbc.Driver
+    url: jdbc:mysql://localhost:3306/employee-management?characterEncoding=utf-8
+    password: "0908"
+    username: root
+#    type: com.alibaba.druid.pool.DruidDataSource
+  jpa:
+    hibernate:
+        ddl-auto: update
+    show-sql: true

springboot-jpa-demo/src/test/java/com/cunyu/springbootjpademo/SpringbootJpaDemoApplicationTests.java

+package com.cunyu.springbootjpademo;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class SpringbootJpaDemoApplicationTests {
+
+    @Test
+    void contextLoads() {
+    }
+
+}