ajax提交到java后台之后处理数据的实现

环境：eclipse+struts

要实现的效果：点击按钮提交数据到后台之后回到前台显示出来数据

index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
  pageEncoding="UTF-8"%>
<!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>Insert title here</title>
</head>
<body>
<input type="text" id="userinput">
<input type="button" id="submit">
<div id="msg"></div>
</body>
<script type="text/javascript" src="jquery-2.1.0.js"></script>
<script type="text/javascript">
window.onload = function() {
  document.getElementById("submit").onclick = test;
}
function test(){
  var userinput = document.getElementById("userinput");
  $.post("http://localhost:8080/TestSpring/TestAction",{username:userinput.value},
  function(data, textStatus){
    document.getElementById("msg").innerHTML = data;
  });
}
</script>
</html> 

 struts.xml

<action name="TestAction" class="com.action.Test">
  <result>index.jsp</result>
</action> 

Test.java

package com.action; 

import java.io.PrintWriter;
import java.util.Map; 

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse; 

import org.apache.struts2.ServletActionContext; 

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport; 

public class Test extends ActionSupport {
  @Override
  public String execute() throws Exception {
    // TODO Auto-generated method stub
    HttpServletRequest request = org.apache.struts2.ServletActionContext.getRequest();
    HttpServletResponse response = ServletActionContext.getResponse();
    request.setCharacterEncoding("utf-8");
    response.setCharacterEncoding("utf-8");
    PrintWriter out = response.getWriter();
    out.write(request.getParameter("username"));
    out.flush();
    out.close();
    return SUCCESS;
  }
} 

以上这篇ajax提交到java后台之后处理数据的实现就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持我们。