<td width="33%"><img src="images/checkBt.jpg" width="104"
height="23" style="cursor: hand;"
onClick="checkUser(form1.username);"></td>
</tr>
<tr>
<td height="51" align="right" style="color: #8e6723"><b>密码：</b></td>
<td><input name="pwd1" type="password" id="pwd1" size="35"></td>
<td rowspan="2">
<div id="toolTip"></div>
</td>
</tr>
<tr>
<td height="56" align="right" style="color: #8e6723"><b>确认密码：</b></td>
<td><input name="pwd2" type="password" id="pwd2" size="35"></td>
</tr>
<tr>
<td height="55" align="right" style="color: #8e6723"><b>E-mail：</b></td>
<td colspan="2"><input name="email" type="text" id="email"
size="45"></td>
</tr>
<tr>
<td> </td>
<td colspan="2"><input type="image" name="imageField"
src="images/registerBt.jpg"></td>
</tr>
</table>
</div>
</td>
</tr>
<tr>
<td> </td>
</tr>
</table>
</form>
</body>
</html>
2.服务器端代码
Action类的代码
package com.action;
import java.util.Map;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.xzy.UserDAO;
public class CheckUserAction extends ActionSupport{
private String user;
public String findUserByName(){
String info = null;
UserDAO userdao = new UserDAO();
if(userdao.findUserByName(user)){
//info="用户名已经被注册";
Map map = (Map)ActionContext.getContext().get("request");
map.put("info", "用户名已经被注册");
return "success";
}else{
//info="用户名可以注册";
Map map = (Map)ActionContext.getContext().get("request");
map.put("info", "用户名可以注册使用");
return "fail";
}
}
public String getUser() {
return user;
}
public void setUser(String user) {
this.user = user;
}
}
struts.xml配置
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<package name="myPackage" extends="struts-default">
<!-- 定义action -->
<action name="checkUser" class = "com.action.CheckUserAction" method="findUserByName">
<!-- 定义处理成功后的映射页面 -->
<result >/info.jsp</result>
</action>
</package>
</struts>
info.jsp为显示信息页面
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%=request.getAttribute("info")%>
