使用Fastjson对java对象,json对象,字符串之间相互转化

1.导入pom.xml文件

<dependencies>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.59</version>
        </dependency>
    </dependencies>

2.创建对象Person

import java.io.Serializable;

public class Person {
    private int id;
    private String name;
    private int age;
    private String gender;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }
}

3.java对象，json对象，字符串之间相互转化

1.java对象转化为JSON字符串
String userString = JSON.toJSONString(User);

2.JSON字符串转换为java对象
User user = JSON.parseJSON(userString,User.class);

3.JSON字符串转化为JSON对象
JSON userJson = (JSON)JSON.parseJSON(userString);

4.JSON对象转化为JSON字符串
String userString = JSON.toJSONString(userJson);

5.JAVA对象转化为JSON对象
JSON userJson = (JSON)JSON.toJSON(user);

6.JSON对象转化为JAVA对象
User user = JSON.toJavaObject(userJson);