注意：本文举例使用JSON的是fastjson
1：JSONArray转List
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JSONArray字符串 转 List
//初始化JSONArray JSONArray array=new JSONArray(); array.add(0,"a"); array.add(1,"b"); array.add(2,"c");List<String> list = JSONObject.parseArray(array.toJSONString(),String.class);System.out.println(list.toString());输出结果：
[a, b, c] -
JSONArray对象 转 List
//初始化JSONArray JSONArray jsonArray = JSONArray.parseArray("[{\"name\":\"zhangsan\",\"age\":18},{\"name\":\"lisi\",\"age\":23}]"); //打印jsonArray System.out.println(jsonArray.toJSONString()); //转List List<Body> list = JSONArray.parseArray(jsonArray.toJSONString(), Body.class); //打印List<Body> System.out.println(list.toString());Body.class代码：
/** *测试实体类 **/ static class Body implements Serializable {private static final long serialVersionUID = 1L;private String name;private int age;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;}@Overridepublic String toString() {return "Body{" +"name='" + name + '\'' +", age=" + age +'}';} }
输出结果：
[{"name":"zhangsan","age":18},{"name":"lisi","age":23}]
[Body{name='zhangsan', age=18}, Body{name='lisi', age=23}]
2：List转JSONArray
List<T> list = new ArrayList<T>();
JSONArray jsonArray = JSONArray.parseArray(JSON.toJSONString(list));