java解析json格式的字符串 maven依赖

1.解析简单的josn格式字符串
String msg = "{'rs':0,'fs':'登录成功!'}";
JSONObject jsonObject = new JSONObject(msg);
System.out.println(jsonObject.getString("fs"))

2.解析json数组格式的字符串
String jsonStr = "[{\"assignNo\":\"201310091540\", \"deliveryStatus\":\"66666\",\"id\":\"1\", \"remark\":\"YY\",\"userName\":\"ZHANGSAN\"}, {\"assignNo\":\"3215242251522215\", \"deliveryStatus\":\"33333\",\"id\":\"3\",
\"imgName\":\"1381314903597.png\",\"imgStr\": \"1381314903597.png\",\"remark\":\"\", \"userName\":\"ZHANGSAN\"}]";
JSONArray jsonArray = JSONArray.fromObject(jsonStr);
Object[] objs = jsonArray.toArray();
for (Object object : objs) {
JSONObject jsonObject = JSONObject.fromObject(object);
if(jsonObject.has("imgStr")){
System.out.println(jsonObject.getString("imgStr"));
}
System.out.println(jsonObject.getString("assignNo"));
}

String jsonStr =sendPost(url,para,false);
JSONObject jsonObject = JSONObject.fromObject(jsonStr);
if (jsonObject.getBoolean("success") == true){
//登录成功
return true;
}else{
logger.error("密码输入错误！" );

return false;

}

下面是通过maven进行添加依赖

<!-- json jar包 -->
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<classifier>jdk15</classifier>
</dependency>

//排除roles属性不做序列化

JsonConfig jsonConfig = new JsonConfig();  

jsonConfig.setExcludes(new String[]{ "roles" });

        

//注意，如果json对象包含了为null的值，转换将会报错

JSONObject.fromObject(json, jsonConfig);