这次给大家带来ajax提交到java后怎么处理数据，ajax提交到java后处理数据的注意事项有哪些，下面就是实战案例，一起来看一下。
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">
<p id="msg"></p>
</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;
}
}
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以上就是ajax提交到java后怎么处理数据的详细内容。