MessageResource.properties配置文件：
RegisterAction注册：
package com.caiduping.action;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import cn.itcast.web.formbean.UserFormbean;
public class RegisterAction extends Action {
//actionServlet
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
String param = mapping.getParameter();
System.out.println(param);
UserFormbean bean = (UserFormbean) request.getSession().getAttribute("UserFormBean");
System.out.println(bean.getUsername());
System.out.println(bean.getPassword());
System.out.println(bean.getEmail());
try{
System.out.println("向数据注册用户！！");
request.setAttribute("message", "注册成功");
}catch (Exception e) {
request.setAttribute("message", "注册失败");
}
return mapping.findForward("message");
}
}
UserFormbean表格：
package com.caiduping.formbean;
import java.util.ResourceBundle;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.util.MessageResources;
//actionServlet
public class UserFormbean extends ActionForm {
private String username;
private String password;
private String email;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
//actionServlet
@Override
public ActionErrors validate(ActionMapping mapping,
HttpServletRequest request) {
ActionErrors errors = new ActionErrors();
if(this.username==null || this.username.trim().equals("")){
errors.add("username", new ActionMessage("用户名不能为空",false));
errors.add("username", new ActionMessage("errors.username.required"));
errors.add("username", new ActionMessage("errors.required","用户名"));
MessageResources mr = MessageResources.getMessageResources("cn.itcast.resource.MessageResource");
errors.add("username", new ActionMessage("errors.required",mr.getMessage("prompt.username")));
}
return errors;
}
}
页面不存在404.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP '404.jsp' starting page</title>
</head>
<body>
对不起，您要访问资源不存在
</body>
</html>
index.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<a href="${pageContext.request.contextPath }/RegisterUI.do">注册</a>
<c:url var="register" value="/RegisterUI.do"/>
<a href="${register }">注册</a>
<%
request.setAttribute("name","中国");
%>
<html:link action="/RegisterUI" paramId="name" paramName="name">注册</html:link>
<%
Map map = new HashMap();
map.put("aa","1");
map.put("bb","2");
map.put("cc","3");
request.setAttribute("map",map);
%>
<html:link action="/RegisterUI" name="map">注册</html:link>
<%
request.setAttribute("now",new Date());
%>
<html:link action="/RegisterUI" paramId="now" paramName="now" paramProperty="time">注册</html:link>
</body>
</html>
传递消息message.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'message.jsp' starting page</title>
</head>
<body>
${message }
</body>
</html>
web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<servlet-name>ActionServlet</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>ActionServlet</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
run:
