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";elsedocument.getElementById("sp").innerHTML="不能注册";}},"html");});}</script><script src="js/jquery-1.10.2.min.js"></script></body></html>
2、test.java
@Componentpublic 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;}@Overridepublic 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>
，如果我们想要更多的玫瑰花，就必须种植更多的玫瑰树。
