package com.rs.struts2.web.action;
import java.util.ArrayList;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts2.ServletActionContext;
import org.jgroups.util.List;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import com.rs.struts2.model.User;
/**
* @author
* @version 1.0
*
* */
public class UserAction extends ActionSupport implements ModelDriven<User>{
//struts2會自動new一個user對象，只需要給它setter和getter
private User user=new User();
private int a = 0;
public String add(){
addFieldError("add_success",getText("add.success"));
addActionError("成功了");
addActionMessage("成功了2");
return "success";
}
public String addUser(){
System.out.println("___________________");
addFieldError("add_success",getText("add.success"));
addActionError("成功了");
addActionMessage("成功了2");
return "success";
}
public String update(){
addFieldError("update_success",getText("update.success"));
return "success";
}
public String del(){
HttpServletRequest request = ServletActionContext.getRequest();
ArrayList list = new ArrayList();
for (int i = 0; i <10; i++) {
list.add(i);
}
request.setAttribute("name", "zheng-gang");
request.setAttribute("list", list);
request.setAttribute("number1", 10);
addFieldError("del_success",getText("del.success"));
return "success";
}
public String list(){
addFieldError("list_success",getText("list.success"));
return "success";
}
public User getModel() {
return this.user;
}
}
UserAction-validation.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE validators PUBLIC
"-//OpenSymphony Group//XWork Validator 1.0.2//EN"
"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">
<validators>
<field name="username">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message key="requiredadd.name"/>
</field-validator>
</field>
<field name="pwd">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message key="requiredadd.password"></message>
</field-validator>
</field>
</validators>
ResourceMessages.properties
requiredadd.name = 用戶名不能爲空
requiredadd.password = 密碼不能爲空
add.success= 添加成功
struts.xml
<?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>
<constant name="struts.devMode" value="true" />
<constant name="struts.custom.i18n.resources" value="ResourceMessages" />
<package name="User" namespace="/user" extends="struts-default">
<action name="User_*" class="com.rs.struts2.web.action.UserAction" method="{1}">
<!-- 只允許add方法和update方法使用校驗器 -->
<interceptor-ref name="defaultStack">
<param name="validation.excludeMethods">*</param>
<param name="validation.includeMethods">add,update,addUser</param>
</interceptor-ref>
<result name="success">/user_success.jsp</result>
<result name="input">/addUser.jsp</result>
</action>
</package>
</struts>
jsp：
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!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>
<hr/>
<form action="<%=basePath%>user/User_addUser" method="post">
<table>
<tr>
<td>姓名：</td>
<td>
<input type="text" name="username" msg="add.username">
</td>
<td>
<s:fielderror><s:param name="username">username</s:param></s:fielderror>
</td>
</tr>
<tr>
<td>密碼：</td>
<td><input type="password" name="pwd" ></td>
<td><s:fielderror><s:param name="pwd">pwd</s:param></s:fielderror></td>
</tr>
<tr><td>年齡：</td><td><input type="text" name="age" ></td><td></td></tr>
<tr><td>電話：</td><td><input type="text" name="tel" ></td><td></td></tr>
<tr><td>地址：</td><td><input type="text" name="address" ></td><td></td></tr>
<tr><td>郵箱：</td><td><input type="text" name="email" ></td><td></td></tr>
<tr><td><input type="submit" value="添加" ></td><td></td><td></td></tr>
</table>
</form>
</body>
</html>
login_success.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="/struts-tags" prefix="s" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>Success</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<s:actionerror/><Br><s:actionmessage/><Br><s:fielderror><s:param>add_success</s:param></s:fielderror>
<center><p><s:fielderror/></p></center> <br>
<font color='red'>EL表達式 ：格式爲$ { }</font><br>
${name}<br><hr>
<font color='red'>c:out ：輸出值.escapeXml屬性是過濾特殊字符（布爾類型的值）；default屬性是在value的值爲null的情況下輸出的值</font><br>
<c:out value="${name}" default="無數據" escapeXml="false"></c:out><br>
<c:out value="${null}" default="無數據" escapeXml="false"></c:out><br>
<c:out value="${'<'}" default="無數據" escapeXml="true"></c:out><br>
<c:out value="${'<'}" default="無數據" escapeXml="false"></c:out><br><hr>
<font color='red'>c:forEach ：items屬性中可放置數組或集合對象，var屬性裏放置迭代後的對象</font><br>
<c:forEach items="${list}" var="num">
${num}
</c:forEach>
<br>
<c:forEach begin="1" end="11" step="2" var="n" >
${n}
</c:forEach>
<br>
<c:forEach begin="1" end="90" step="5" var="n" >
${n}
<c:if test="${n>50}" var="sti">
sti返回true
</c:if>
</c:forEach>
<br><hr>
<font color='red'>c:choose ：結合c:when,c:otherwise 相當於java中的if/else組合</font><br>
<c:choose>
<c:when test="${2>1}">
算對了
</c:when>
<c:otherwise>
算錯了
</c:otherwise>
</c:choose>
<br><hr>
<font color='red'>c:forTokens ：類似java中的split截取字符串 ，delims屬性是表示要截取的分隔符，var屬性表示分隔後的單一對象</font><br>
<c:forTokens items="speed,net,network,apple,iphone,android" delims="," var="nb">
${nb}
</c:forTokens>
</body>
</html>