json对象与字符串转换操作

一、JavaScript

json对象

var json = {"a":"data1","b":"data2"};

json对象转字符串

var str = JSON.parse(json);

字符串转json对象

var json = JSON.stringify(str);

二、java

使用json-lib

<dependency>    <groupId>org.json</groupId>    <artifactId>json</artifactId>    <version>20160212</version></dependency>

创建json对象

JSONObject obj = new JSONObject(json);obj.put("a","data1");obj.put("b","data2");

json对象转字符串

String str = obj.toString();

字符串直接转json对象

String str = "{'a':'data1','b':'data2'}";JSONObject obj = new JSONObject(str);System.out.println(obj.get("a"));