小傅哥，feat：fastjson

.gitignore

+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
+/.idea/

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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>cn.bugstack</groupId>
+    <artifactId>xfg-dev-tech-fastjson</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <packaging>pom</packaging>
+    <modules>
+        <module>xfg-dev-tech-app</module>
+    </modules>
+
+    <properties>
+        <java.version>1.8</java.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.7.12</version>
+        <relativePath/>
+    </parent>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>com.alibaba</groupId>
+                <artifactId>fastjson</artifactId>
+                <version>2.0.28</version>
+            </dependency>
+            <dependency>
+                <groupId>org.apache.commons</groupId>
+                <artifactId>commons-lang3</artifactId>
+                <version>3.9</version>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <build>
+        <finalName>xfg-dev-tech</finalName>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.0</version>
+                <configuration>
+                    <source>${java.version}</source>
+                    <target>${java.version}</target>
+                    <encoding>${project.build.sourceEncoding}</encoding>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-resources-plugin</artifactId>
+                <version>2.5</version>
+                <configuration>
+                    <encoding>UTF-8</encoding>
+                </configuration>
+            </plugin>
+            <!-- 统一设定POM版本信息插件 -->
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>versions-maven-plugin</artifactId>
+                <version>2.7</version>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
\ No newline at end of file

xfg-dev-tech-app/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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>cn.bugstack</groupId>
+        <artifactId>xfg-dev-tech-fastjson</artifactId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>xfg-dev-tech-app</artifactId>
+
+    <packaging>jar</packaging>
+
+    <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>
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>fastjson</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>xfg-dev-tech-app</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+                <includes>
+                    <include>**/**</include>
+                </includes>
+            </resource>
+        </resources>
+        <testResources>
+            <testResource>
+                <directory>src/test/resources</directory>
+                <filtering>true</filtering>
+                <includes>
+                    <include>**/**</include>
+                </includes>
+            </testResource>
+        </testResources>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>2.6</version>
+                <configuration>
+                    <skipTests>true</skipTests>
+                    <testFailureIgnore>false</testFailureIgnore>
+                    <includes>
+                        <include>**/*Test.java</include>
+                    </includes>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <mainClass>cn.bugstack.xfg.dev.tech.Application</mainClass>
+                    <layout>JAR</layout>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
\ No newline at end of file

xfg-dev-tech-app/src/main/java/cn/bugstack/xfg/dev/tech/Application.java

+package cn.bugstack.xfg.dev.tech;
+
+import org.springframework.beans.factory.annotation.Configurable;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * @author Fuzhengwei bugstack.cn @小傅哥
+ * @description 应用入口
+ * @create 2023-09-23 06:06
+ */
+@SpringBootApplication
+@Configurable
+public class Application {
+
+    public static void main(String[] args){
+        SpringApplication.run(Application.class);
+    }
+
+}

xfg-dev-tech-app/src/main/resources/application.yml

+server:
+  port: 8091
+
+spring:
+  config:
+    name: xfg-dev-tech

xfg-dev-tech-app/src/test/java/cn/bugstack/xfg/dev/tech/test/ApiTest.java

+package cn.bugstack.xfg.dev.tech.test;
+
+import cn.bugstack.xfg.dev.tech.test.domain.model.entity.ChatCompletionRequest;
+import cn.bugstack.xfg.dev.tech.test.domain.model.entity.UserEntity;
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.JSONArray;
+import com.alibaba.fastjson.JSONObject;
+import com.alibaba.fastjson.parser.deserializer.ParseProcess;
+import com.alibaba.fastjson.serializer.SerializeConfig;
+import com.alibaba.fastjson.serializer.SimpleDateFormatSerializer;
+import com.alibaba.fastjson.serializer.SimplePropertyPreFilter;
+import com.alibaba.fastjson2.JSONB;
+import com.alibaba.fastjson2.JSONWriter;
+import lombok.extern.slf4j.Slf4j;
+import org.junit.Test;
+
+import java.lang.reflect.Type;
+import java.nio.file.attribute.UserPrincipal;
+import java.util.Collections;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * @author Fuzhengwei bugstack.cn @小傅哥
+ * @description 单元测试 文档；<a href="https://alibaba.github.io/fastjson2/">fastjson2</a>
+ * @create 2023-09-23 06:18
+ */
+@Slf4j
+public class ApiTest {
+
+    public static void main(String[] args) {
+        // 创建自定义的日期格式化器
+        SimpleDateFormatSerializer dateFormat = new SimpleDateFormatSerializer("dd/MM/yyyy");
+
+        // 创建Fastjson的配置对象
+        SerializeConfig config = new SerializeConfig();
+        config.put(Date.class, dateFormat);
+
+        // 将日期字符串转换为Java Date对象
+        String dateString = "Thu Sep 21 00:00:00 CST 2023";
+        Date date = JSON.parseObject(dateString, (Type) Date.class, (ParseProcess) config);
+
+        System.out.println(date);
+
+        String strJson = JSON.toJSONString(UserEntity.builder().build());
+        UserEntity userEntity = JSON.parseObject(strJson, UserEntity.class);
+    }
+
+    /**
+     * JsonProperty 设定序列化字段
+     */
+    @Test
+    public void test_JsonProperty() {
+        ChatCompletionRequest request = ChatCompletionRequest.builder()
+                .model("3.5")
+                .topP(1.0D)
+                .maxTokens(1024)
+                .build();
+        log.info(JSON.toJSONString(request));
+    }
+
+    /**
+     * 1. 排除不被序列化的字段
+     * 2. 指定不被序列化的字段
+     * 3. 格式化序列化的字段
+     */
+    @Test
+    public void test_excludes() {
+        UserEntity userEntity = UserEntity.builder()
+                .amount(100D)
+                .userName("xfg")
+                .password("abc000")
+                .createTime(new Date())
+                .build();
+
+        SimplePropertyPreFilter filter = new SimplePropertyPreFilter();
+        Collections.addAll(filter.getExcludes(), "password");
+
+        log.info(JSON.toJSONString(userEntity, filter));
+    }
+
+    @Test
+    public void test_parseObject() {
+        String jsonStr = "{\"userName\":\"xfg\",\"createTime\":\"21/09/2023\"}";
+        UserEntity userEntity = JSON.parseObject(jsonStr, UserEntity.class);
+        log.info(userEntity.toString());
+    }
+
+    @Test
+    public void test_map2json() {
+        Map<String, Object> map = new HashMap<>();
+        map.put("key1", "xfg");
+        map.put("key2", 123);
+        map.put("key3", false);
+        log.info(JSON.toJSONString(map));
+    }
+
+    @Test
+    public void test_json2map() {
+        String jsonString = "{\"key1\":\"xfg\",\"key2\":123,\"key3\":false}";
+        Map<String, Object> map = JSON.parseObject(jsonString, Map.class);
+        for (Map.Entry<String, Object> entry : map.entrySet()) {
+            log.info("{} : {}", entry.getKey(), entry.getValue());
+        }
+    }
+
+    @Test
+    public void test_JSONArray() {
+        String text1 = "{\"id\": 2,\"name\": \"fastjson2\"}";
+        JSONObject obj = JSON.parseObject(text1);
+
+        int id = obj.getIntValue("id");
+        String name = obj.getString("name");
+
+        String text2 = "[2, \"fastjson2\"]";
+        JSONArray array = JSON.parseArray(text2);
+
+        int id2 = array.getIntValue(0);
+        String name2 = array.getString(1);
+    }
+
+    @Test
+    public void test_toBytes() {
+        UserEntity userEntity = UserEntity.builder()
+                .amount(100D)
+                .userName("xfg")
+                .password("abc000")
+                .createTime(new Date())
+                .build();
+
+        byte[] bytes1 = JSONB.toBytes(userEntity);
+        byte[] bytes2 = JSONB.toBytes(userEntity, JSONWriter.Feature.BeanToArray);
+    }
+
+    /**
+     * toString 转对象
+     */
+    @Test
+    public void testToString2Bean() throws Exception {
+        UserEntity userEntity = UserEntity.builder()
+                .amount(100D)
+                .userName("xfg")
+                .password("abc000")
+                .createTime(new Date())
+                .build();
+
+        log.info(userEntity.toString());
+        log.info(JSON.toJSONString(ToString2Bean.toObject(userEntity.toString(), UserEntity.class)));
+    }
+
+}

xfg-dev-tech-app/src/test/java/cn/bugstack/xfg/dev/tech/test/ToString2Bean.java

+package cn.bugstack.xfg.dev.tech.test;
+
+import java.lang.reflect.Field;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+public class ToString2Bean {
+
+    public static <T> T toObject(String str, Class<T> clazz) throws Exception {
+        // 创建一个新的对象
+        T obj = clazz.getDeclaredConstructor().newInstance();
+        // 获取类对象
+        Class<?> objClass = obj.getClass();
+        // 解析字符串
+        String[] fields = str.substring(str.indexOf("{") + 1, str.indexOf("}")).split(", ");
+
+        // 遍历成员变量
+        for (String field : fields) {
+            // 获取成员变量名和值
+            String[] parts = field.split("=");
+            // 获取成员变量对象
+            Field objField = objClass.getDeclaredField(parts[0].trim());
+            // 设置成员变量可以访问
+            objField.setAccessible(true);
+            // 设置成员变量的值
+            objField.set(obj, convertValue(objField.getType(), parts[1].trim()));
+            // 设置成员变量不可访问
+            objField.setAccessible(false);
+        }
+
+        return obj;
+    }
+
+    public static Object convertValue(Class<?> type, String value) throws ParseException {
+        if ("'null'".equals(value) || "null".equals(value)) return null;
+        if (type == int.class || type == Integer.class) {
+            return Integer.parseInt(value);
+        } else if (type == long.class || type == Long.class) {
+            return Long.parseLong(value);
+        } else if (type == float.class || type == Float.class) {
+            return Float.parseFloat(value);
+        } else if (type == double.class || type == Double.class) {
+            return Double.parseDouble(value);
+        } else if (type == boolean.class || type == Boolean.class) {
+            return Boolean.parseBoolean(value);
+        } else if (type == char.class || type == Character.class) {
+            return value.charAt(0);
+        } else if (type == byte.class || type == Byte.class) {
+            return Byte.parseByte(value);
+        } else if (type == short.class || type == Short.class) {
+            return Short.parseShort(value);
+        } else if (type == Date.class) {
+            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+            return dateFormat.parse(value);
+        } else {
+            return value;
+        }
+    }
+
+}

xfg-dev-tech-app/src/test/java/cn/bugstack/xfg/dev/tech/test/domain/model/entity/ChatCompletionRequest.java

+package cn.bugstack.xfg.dev.tech.test.domain.model.entity;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor
+public class ChatCompletionRequest {
+
+    private String model;
+    @JsonProperty("top_p")
+    private Double topP = 1d;
+    @JsonProperty("max_tokens")
+    private Integer maxTokens = 2048;
+
+}

xfg-dev-tech-app/src/test/java/cn/bugstack/xfg/dev/tech/test/domain/model/entity/UserEntity.java

+package cn.bugstack.xfg.dev.tech.test.domain.model.entity;
+
+import com.alibaba.fastjson.annotation.JSONField;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+@Data
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor
+public class UserEntity {
+
+    private String userName;
+    private String password;
+    // 不被序列化
+    @JSONField(name="amount", serialize=false)
+    private Double amount;
+    // 序列化格式
+    @JSONField(name="createTime", format="dd/MM/yyyy", ordinal = 3)
+    private Date createTime;
+
+    @Override
+    public String toString() {
+        return "UserEntity{" +
+                "userName='" + userName + '\'' +
+                ", password='" + password + '\'' +
+                ", amount=" + amount +
+                ", createTime=" + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(createTime) +
+                '}';
+    }
+
+}