使用stream类型的Result实现Ajax
1、视图：test.jsp
<%--
Created by IntelliJ IDEA.
User: dong
Date: 15-4-22
Time: 下午3:26
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title></title>
<link rel="stylesheet" href="js/jquery-1.10.2.min.js">
</head>
<body>
用户名:<input type="text" id="name" onblur="aa()" value="张三" name="userName" />
<span id="sp"></span><br/>
<input type="text" id="other" />
<script>
function aa(){
$(document).ready(function() {
$.post("checkuserName.action", {
userName: document.getElementById("name").value
}, function (data, status) {
alert("Data:" + data + "\nStatus:" + status);
if(status=="success"){
if(data=="yes")
document.getElementById("sp").innerHTML="账户名可以被注册";
else
document.getElementById("sp").innerHTML="不能注册";
}
},"html");
});
}
</script>
<script src="js/jquery-1.10.2.min.js"></script>
</body>
</html>
2、test.java
@Component
public class Test extends ActionSupport {
//取得post中userName对应的value值
private String userName;
//封装输出结果的二进制流
private InputStream inputStream;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public InputStream getInputStream() {
return inputStream;
}
public void setInputStream(InputStream inputStream) {
this.inputStream = inputStream;
}
@Override
public String execute() throws Exception {
inputStream = userName.equals("张三")?
new ByteArrayInputStream("yes".getBytes("UTF-8")):new ByteArrayInputStream("no".getBytes("UTF-8"));
return Action.SUCCESS;
}
}
3、struts.xml文件
<constant name="struts.i18n.encoding" value="UTF-8"/>
<constant name="struts.devMode" value="true"/>
<constant name="struts.enable.DynamicMethodInvocation" value="false"/>
<package name="zjd" extends="struts-default">
<action name="checkuserName" class="loginAction">
<result type="stream">
<!--指定stream生成的响应数据的类型-->
<param name="contentType">text/html</param>
<!--指定由getResult()方法返回输出结果的InputStream-->
<param name="inputStream">result</param>
</result>
</action>
</package>
时间： 2024-08-10 23:12:45