js method to convert strings in json format into objects or arrays (front and back)

高洛峰
Release: 2016-12-08 10:41:42
Original
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1. Frontend

// 转换成对象 var myObject = JSON.parse(_data); alert("对象:"+myObject.msg); // 转换成数组 var myobj = eval("["+_data+"]"); for (var i = 0; i < myobj.length; i++) { alert("数组:"+myobj[i].msg); } //把json格式的字符串转成JSON对象 var json1 = '{"department": "中兵","address": "北京","contacts": "李硕","telphone": "15201274666","email": "li_shilei@yeah.NET","fax": "0108596666"}'; var json2 = '{"department": "中兵2","address": "北京2","contacts": "李硕2","telphone": "152012746662","email": "li_shilei2@yeah.Net","fax": "01085966662"}'; var jsonObj = $.parseJSON(json1); 或用eval方法 //把数组转成JSON对象 var arr=new Array(); arr.push(json1); arr.push(json2); var b=JSON.stringify(arr)
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2. Backend

When you need to convert a string into a json array and traverse the contents.

Import two jar packages net.sf.json.JSONArray and net.sf.json.JSONObject on the homepage

String str = "[{name:'a',value:'aa'},{name:'b',value:'bb'},{name:'c',value:'cc'},{name:'d',value:'dd'}]" ; // 一个未转化的字符串 JSONArray json = JSONArray.fromObject(str ); // 首先把字符串转成 JSONArray 对象 if(json.size()>0){ for(int i=0;i
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