JSON数据格式以及与后台交互数据转换实例
json
适用于现代 C++ 的 JSON。
项目地址：https://gitcode.com/gh_mirrors/js/json
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/*
作者：烟大阳仔
时间：20131013
介绍:主要了解一下json的格式，看看数据是怎么存储的
*/
<p><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "<a target=_blank target="_blank" href="http://www.w3.org/TR/html4/loose.dtd">http://www.w3.org/TR/html4/loose.dtd</a>">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
/*
class person
{
Integer id;
String name;
}
Person p=new Person();
*/
//jason格式标识一个对象
var people={"firstName":"zhangsan","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"};
//alert(people.firstName);
//json标识多个人
var people2=
[
{"firstName":"zhangsan","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"},
{"firstName":"zhangsan","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"},
{"firstName":"zhangsan","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"}
]
//alert(people2[1].firstName);
//别名：
var people3={"person":
[
{"firstName":"zhangsan","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"},
{"firstName":"zhangsan","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"},
{"firstName":"zhangsan","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"}
]
}
//alert(people3.person[1].firstName);
var people3={
"person1":
[
{"firstName":"zhangsan","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"},
{"firstName":"zhangsan","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"},
{"firstName":"zhangsan","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"}
],
"person2":
[
{"firstName":"zhangsan","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"},
{"firstName":"zhangsan","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"},
{"firstName":"zhangsan","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"}
],
"person3":
[
{"firstName":"wy","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"},
{"firstName":"zhangsan","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"},
{"firstName":"zhangsan","lastName":"hao","email":"<a target=_blank target="_blank" href="mailto:1221@qq.com">1221@qq.com</a>"}
]
}
//alert(people3.person3[0].firstName);
</script>
</head>
<body></p><p></body>
</html></p>
-------------------------------------------------------------------------------------------------------------
/*
作者：烟大阳仔
时间：20131013
介绍:主要了学习一下json与后台交互的时候数据的转换
*/
<p><!DOCTYPE html>
<html>
<head>
<title>json2.html</title>
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
<script type="text/javascript">
function ajaxFunction()
{
var xmlHttp=null;
try
{
// Firefox, Opera 8.0+, Safari
xmlHttp=new XMLHttpRequest();
}
catch (e)
{</p><p> // Internet Explorer
try
{
xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
}
catch (e)
{</p><p> try
{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e)
{
alert("您的浏览器不支持AJAX！");
return false;
}
}
}
return xmlHttp;
}
window.οnlοad=function()
{
document.getElementById("sub").οnclick=function()
{
var xmlReq=ajaxFunction();
xmlReq.onreadystatechange=function()
{
if(xmlReq.readyState==4)
{
if(xmlReq.status==200||xmlReq.status==304)
{
var data=xmlReq.responseText;
//{pid:1,pname:'山东省'}
//alert(data);
var dataObj=eval("("+data+")");
//alert(dataObj);
//alert(dataObj.pname);
for(var i=0;i<dataObj.length;i++)
{
alert(dataObj[i].id+" "+dataObj[i].addre);
}
}
}
}
xmlReq.open("post","../jsonServlet?timeStamp="+new Date().getTime(),true);
xmlReq.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
//alert("adsada");
/*
* 3.发送数据
* */
xmlReq.send("b=0");
}
}
</script>
</head>
<body>
<input type="submit" value="提交" name="sub" id="sub"/>
<select id="province" name="province">
<option value="">请选择...</option>
</select>
</body>
</html>
</p>
<p>package cn.com.Demo;</p><p>import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;</p><p>import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;</p><p>import net.sf.json.JSONArray;
import net.sf.json.JsonConfig;</p><p>import cn.com.bean.Province;</p><p>public class jsonServlet extends HttpServlet {</p><p>
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html; charset=utf-8");
PrintWriter out=response.getWriter();
System.out.println("---------------Post-----------------------");
System.out.println(request.getParameter("b"));
//out.write("你好！");
//一个省份的时候
//String str2="{pid:1,pname:'山东省'}";
//out.write(str2);
//多个省份的时候
//String str="[{pid:1,pname:'山东省'},{pid:2,pname:'四川'},{pid:3,pname:'北京'},{pid:4,pname:'上海'}]";
//out.write(str);
//
List<Province> list=new ArrayList<Province>();
Province p1=new Province(1,"山东");
Province p2=new Province(2,"北京");
Province p3=new Province(3,"上海");
list.add(p1);
list.add(p2);
list.add(p3);
JsonConfig config=new JsonConfig();
config.setExcludes(new String[]{"id"});
JSONArray jsonArray=JSONArray.fromObject(list,config);
out.write(jsonArray.toString());
System.out.println(jsonArray.toString());
}</p><p>}
</p>
GitHub 加速计划 / js / json
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适用于现代 C++ 的 JSON。
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