JAVA代码解析String字符串(json格式的)

java解析String字符串(json格式)

　　需要jar包：json-lib-2.4-jdk15.jar

一、

　　String str = "{\"name\":\"zhangsan\",\"password\":\"zhangsan123\",\"email\":\"10371443@qq.com\"}";

　　此时用JSONObject：

　　　　

 String str = "{\"name\":\"zhangsan\",\"password\":\"zhangsan123\",\"email\":\"10371443@qq.com\"}";
 JSONObject json = JSONObject.fromObject(str);
 System.out.println(json.getString("name"));

二、

　  String jsonString = "[{\"name\":\"zhangsan\",\"password\":\"zhangsan123\",\"email\":\"10371443@qq.com\"}"

　　　　　　　　　　　　+ ",{\"name\":\"lisi\",\"password\":\"lisi123\",\"email\":\"1435123@qq.com\"}]";

　　此时用JSONArray:

 String jsonString = "[{\"name\":\"zhangsan\",\"password\":\"zhangsan123\",\"email\":\"10371443@qq.com\"}"
     + ",{\"name\":\"lisi\",\"password\":\"lisi123\",\"email\":\"1435123@qq.com\"}]";
 JSONArray jsonArray = JSONArray.fromObject(jsonString);
 for(int i = 0 ;i < jsonArray.size() ; i++){
     System.out.println("name = "+jsonArray.getJSONObject(i).getString("name"));
     System.out.println("password = "+jsonArray.getJSONObject(i).getString("password"));
     System.out.println("email = "+jsonArray.getJSONObject(i).getString("email"));
 }

　　　　

两个的输出结果为：

zhangsan
=========================================
name = zhangsan
password = zhangsan123
email = 10371443@qq.com
name = lisi
password = lisi123
email = 1435123@qq.com