一个最简单的JSON传递
使用JSON对象需要用到下面几个包：
这几个包到百度上搜json jar包应该会有下载的地方，上面这几个可能有用不到的。对这几包还不太清楚。
html页面代码：
View Code
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>jsonTest.html</title>
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript">
$().ready(function(){
$("input").click(function(){
$.ajax({
type:"post",
url:"jsonOutServlet",
dataType:"json",
data:"id=好好学习",
success:function(user){
$("div").html("姓名："+user.name+"<br>性别:"+user.sex+"<br>年龄："+user.age);
}
});
});
});
</script>
</head>
<body>
<div>
</div>
<input type="button" value="click me!"/>
</body>
</html>
javaBean:
View Code
package com.xxx.entity;
/**
* 用户实体类
* @author xxx
*
*/
public class User {
private String name;
private int age;
private String sex;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
}
servlet代码：
View Code
package com.xxx.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.json.JSONObject;
import com.xxx.entity.User;
/**
* Servlet implementation class JsonOutServlet
*/
public class JsonOutServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doPost(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setCharacterEncoding("utf-8");//设置编码，否则页面会出现乱码
PrintWriter out=response.getWriter();
String name=request.getParameter("id");
name=new String(name.getBytes("ISO-8859-1"),"UTF-8");//解决前台传值乱码问题
System.out.println(name);
User user=new User();
user.setName("lhc_net");
user.setSex("男");
user.setAge(23);
JSONObject jb=JSONObject.fromObject(user);
System.out.println(jb.toString());
out.print(jb);
out.flush();
out.close();
}
}
