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Java解析Json字符串--数组或列表Json示例:[
    {
        "age": 25,
        "gender": "female",
        "grades": "三班",
        "name": "露西",
        "weight": 51.3
    },
    {
        "age": 26,
        "gender": "male",
        "grades": "三班",
        "name": "杰克",
        "weight": 66.5
    },
    {
        "age": 25,
        "gender": "female",
        "grades": "三班",
        "name": "莉莉",
        "weight": 55
    }
]我们来解析一下这个Json字符串。首先,因为此Json字符串最外边是由一个中括弧”[]”包裹,那么,最终我们会用数组或者列表来接收它。接下来,我们能看到中括弧里边有三个同级的大括弧,并且每个大括弧里包含的内容是相同的,大括弧我们可以对应创建一个类,我们创建一个类Student.java,并对应大括弧内的元素,定义相应的成员变量,生成get/set方法。--------------------------------------分割线 --------------------------------------[译]JSON数据范式化(normalizr)  http://www.linuxidc.com/Linux/2016-02/128288.htm如何处理JSON中的特殊字符 http://www.linuxidc.com/Linux/2015-09/123067.htmStruts中异步传送XML和JSON类型的数据 http://www.linuxidc.com/Linux/2013-08/88247.htmLinux下JSON库的编译及代码测试 http://www.linuxidc.com/Linux/2013-03/81607.htmjQuery 获取JSON数据[$.getJSON方法] http://www.linuxidc.com/Linux/2013-03/81673.htm用jQuery以及JSON包将表单数据转为JSON字符串 http://www.linuxidc.com/Linux/2013-01/77560.htm在C语言中解析JSON配置文件 http://www.linuxidc.com/Linux/2014-05/101822.htm--------------------------------------分割线 --------------------------------------我们生成的Student.java如下:package com.bean;/**
 *  学生
 */
public class Student {    private int age;//年龄
    private String gender;//性别,male/female
    private String grades;//班级
    private String name;//姓名
    private float weight;//体重    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;
    }
    public String getGrades() {
        return grades;
    }
    public void setGrades(String grades) {
        this.grades = grades;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public float getWeight() {
        return weight;
    }
    public void setWeight(float weight) {
        this.weight = weight;
    }}解析成数组或列表:package com.test;import java.util.ArrayList;
import java.util.List;import net.sf.json.JSONArray;import com.bean.Student;public class Domain {    @SuppressWarnings("unchecked")
    public static void main(String[] args) {        String jsonStr = "[{"age": 25,"gender": "female","grades": "三班","name": "露西","weight": 51.3},{"age": 26,"gender": "male","grades": "三班","name": "杰克","weight": 66.5},{"age": 25,"gender": "female","grades": "三班","name": "莉莉","weight": 55}]";        JSONArray jsonArray = JSONArray.fromObject(jsonStr);        Student[] stus = new Student[3];
        List<Student> list = new ArrayList<Student>();        stus = (Student[]) JSONArray.toArray(jsonArray, Student.class);//转换成数组
        list = (List<Student>) JSONArray.toCollection(jsonArray, Student.class);//转换成列表    }
}通过数组或者列表生成Json字符串:package com.test;import java.util.ArrayList;
import java.util.List;import net.sf.json.JSONArray;import com.bean.Student;public class Domain {    @SuppressWarnings("unchecked")
    public static void main(String[] args) {        Student stu1 = new Student();
        Student stu2 = new Student();
        Student stu3 = new Student();        stu1.setAge(25);
        stu1.setGender("female");
        stu1.setGrades("三班");
        stu1.setName("露西");
        stu1.setWeight(51.3f);        stu2.setAge(26);
        stu2.setGender("male");
        stu2.setGrades("三班");
        stu2.setName("杰克");
        stu2.setWeight(66.5f);        stu3.setAge(25);
        stu3.setGender("female");
        stu3.setGrades("三班");
        stu3.setName("莉莉");
        stu3.setWeight(55.0f);        Student[] stus = new Student[3];
        List<Student> list = new ArrayList<Student>();        stus[0] = stu1;
        stus[1] = stu2;
        stus[2] = stu3;        list.add(stu1);
        list.add(stu2);
        list.add(stu3);        String jsonStr1 = JSONArray.fromObject(stus).toString();
        String jsonStr2 = JSONArray.fromObject(list).toString();        System.out.println(jsonStr1);
        System.out.println(jsonStr2);
    }
}本文永久更新链接地址:http://www.linuxidc.com/Linux/2016-02/128410.htm