注意：本文舉例使用JSON的是fastjson
1：JSONArray轉List
- JSONArray字符串 轉 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());輸出結果：
[a, b, c] - JSONArray對象 轉 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()); //轉List List<Body> list = JSONArray.parseArray(jsonArray.toJSONString(), Body.class); //打印List<Body> System.out.println(list.toString()); /** *測試實體類 **/ 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; } @Override public String toString() { return "Body{" + "name='" + name + '\'' + ", age=" + age + '}'; } }輸出結果：
[{"name":"zhangsan","age":18},{"name":"lisi","age":23}]
[Body{name='zhangsan', age=18}, Body{name='lisi', age=23}]
2：List轉JSONArray
List<T> list = new ArrayList<T>();
JSONArray jsonArray = JSONArray.parseArray(JSON.toJSONString(list));