Struts2基本程序演示

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
 3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4          xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
 5          version="3.1">
 6     <filter>
 7         <filter-name>struts2</filter-name>
 8         <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
 9     </filter>
10     <filter-mapping>
11         <filter-name>struts2</filter-name>
12         <url-pattern>/*</url-pattern>
13     </filter-mapping>
14 </web-app>

 1 <?xml version="1.0" encoding="UTF-8" ?>
 2 <!DOCTYPE struts PUBLIC
 3     "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
 4     "http://struts.apache.org/dtds/struts-2.3.dtd">
 5 
 6 <struts>
 7 
 8     <constant name="struts.enable.DynamicMethodInvocation" value="false" />
 9     <constant name="struts.devMode" value="true" />
10     <!--默认就是UTF-8 所以不配置也行-->
11     <!--<constant name="struts.i18n.encoding" value="UTF-8"/>-->
12 
13     <package name="default" namespace="/" extends="struts-default">
14         <action name="index">
15             <result>/WEB-INF/main.jsp</result>
16         </action>
17     </package>
18 
19     <!--struts2qs模块-->
20     <include file="org/zln/struts2qs/cfg/struts2_struts2qs.xml"/>
21 
22 </struts>

 1 <?xml version="1.0" encoding="UTF-8" ?>
 2 <!DOCTYPE struts PUBLIC
 3     "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
 4     "http://struts.apache.org/dtds/struts-2.3.dtd">
 5 
 6 <struts>
 7 
 8     <!--国际化资源-->
 9     <constant name="struts.custom.i18n.resources" value="org/zln/struts2qs/resource/messageResource"/>
10 
11     <!--struts2qs模块-->
12     <package name="struts2qs" namespace="/struts2qs" extends="struts-default">
13         <!--登录界面-->
14         <action name="loginUI" class="org.zln.struts2qs.action.LoginAction" method="loginUI">
15             <result name="success">/WEB-INF/struts2qs/loginForm.jsp</result>
16         </action>
17         <!--登录动作-->
18         <action name="loginDo" class="org.zln.struts2qs.action.LoginAction" method="loginDo">
19             <result name="success">/WEB-INF/struts2qs/welcome.jsp</result>
20             <result name="input">/WEB-INF/struts2qs/loginForm.jsp</result>
21         </action>
22         <!--获取书籍-->
23         <action name="getBooks" class="org.zln.struts2qs.action.BookAction" method="getBook">
24             <result name="success">/WEB-INF/struts2qs/showBooks.jsp</result>
25             <result name="login">/WEB-INF/struts2qs/loginForm.jsp</result>
26         </action>
27     </package>
28 
29 </struts>

 1 package org.zln.struts2qs.action;
 2 
 3 import com.opensymphony.xwork2.ActionContext;
 4 import com.opensymphony.xwork2.ActionSupport;
 5 import org.apache.commons.lang3.StringUtils;
 6 
 7 /**
 8  * Created by sherry on 15-7-8.
 9  */
10 public class LoginAction extends ActionSupport {
11     private String username;
12     private String password;
13 
14     //登录界面
15     public String loginUI(){
16         return SUCCESS;
17     }
18     //登录动作
19     public String loginDo(){
20         System.out.println("获取参数：" + username + ":" + password);
21         if ("zln".equals(username)
22                 &&"123".equals(password)){
23             ActionContext.getContext().getSession().put("user",username);
24             return SUCCESS;
25         }else {
26             return INPUT;
27         }
28     }
29 
30     //输入校验
31 
32     //所有方法的输入校验
33     @Override
34     public void validate() {
35         super.validate();
36     }
37 
38     //指定方法的输入校验
39     public void validateLoginDo(){
40         if (StringUtils.isEmpty(username)){
41             //对错误信息进行了国际化 也可以直接用文字
42             addFieldError("username",getText("username.required"));
43         }
44     }
45 
46     public String getUsername() {
47         return username;
48     }
49 
50     public void setUsername(String username) {
51         this.username = username;
52     }
53 
54     public String getPassword() {
55         return password;
56     }
57 
58     public void setPassword(String password) {
59         this.password = password;
60     }
61 }
62 
63 
64 /*
65 Action访问Servlet API
66 间接访问
67      static ActionContext     getContext()
68 直接访问
69 * */

 1 package org.zln.struts2qs.action;
 2 
 3 import com.opensymphony.xwork2.ActionContext;
 4 import com.opensymphony.xwork2.ActionSupport;
 5 import org.zln.struts2qs.service.BookService;
 6 
 7 /**
 8  * Created by sherry on 15-7-8.
 9  */
10 public class BookAction extends ActionSupport {
11     private String[] books;
12 
13     public String getBook(){
14         String user = (String) ActionContext.getContext().getSession().get("user");
15         if ("zln".equals(user)){
16             //实际开发中会从容器中获取依赖对象
17             BookService bookService = new BookService();
18             books = bookService.getLeeBooks();
19             return SUCCESS;
20         }else {
21             return LOGIN;
22         }
23     }
24 
25     public String[] getBooks() {
26         return books;
27     }
28 
29     public void setBooks(String[] books) {
30         this.books = books;
31     }
32 }

 1 <%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="UTF-8" %>
 2 <%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
 3 <%@ taglib prefix="s" uri="/struts-tags" %>
 4 <%
 5     String home = request.getContextPath();
 6 %>
 7 <html>
 8 <head>
 9     <%--s:text标签输出国际化信息--%>
10     <title><s:text name="loginPage"/></title>
11 </head>
12 <body>
13     <form action="<%=home%>/struts2qs/loginDo.action" method="post">
14         <table>
15             <caption>用户登录</caption>
16             <tr>
17                 <td>用户名：</td>
18                 <td><input type="text" name="username" /></td>
19             </tr>
20             <tr>
21                 <td>密 码：</td>
22                 <td><input type="password" name="password" /> </td>
23             </tr>
24             <tr>
25                 <td colspan="2">
26                     <input type="submit" value="提交"/>
27                     <input type="reset" value="重置" />
28                 </td>
29             </tr>
30         </table>
31     </form>
32     <hr/>
33     <%--使用Struts2标签 默认提供表单输出提示--%>
34     <s:form namespace="/struts2qs" action="loginDo" method="POST">
35         <%--使用标签的 key 输出国际化信息--%>
36         <s:textfield name="username" key="username"/>
37         <s:password name="password" label="密  码"/>
38         <s:submit value="提交"></s:submit>
39     </s:form>
40 </body>
41 </html>

 1 <%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="UTF-8" %>
 2 <%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
 3 <%@ taglib prefix="s" uri="/struts-tags" %>
 4 <%
 5     String home = request.getContextPath();
 6 %>
 7 <html>
 8 <head>
 9     <%--使用表达式输出国际化信息--%>
10     <title><s:property value="%{getText(‘succPage‘)}"/> </title>
11 </head>
12 <body>
13     欢迎，${sessionScope.user}，您已经登录！<br/>
14     <a href="<%=home%>/struts2qs/getBooks.action">获取书籍列表</a>
15 </body>
16 </html>

 1 <%@ page import="com.opensymphony.xwork2.util.ValueStack" %>
 2 <%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="UTF-8" %>
 3 <%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
 4 <%@ taglib prefix="s" uri="/struts-tags" %>
 5 <html>
 6 <head>
 7     <title>书籍</title>
 8 </head>
 9 <body>
10     <table border="1" width="360">
11         <%
12             /*Struts2的所有属性参数被封装在此*/
13             ValueStack valueStack = (ValueStack) request.getAttribute("struts.valueStack");
14             String[] books = (String[]) valueStack.findValue("books");
15             for (String book:books){
16                 %>
17                 <tr>
18                     <td>书名：</td>
19                     <td><%=book%></td>
20                 </tr>
21         <%
22             }
23         %>
24     </table>
25     <hr/>
26     <table border="1" width="360">
27         <caption>书籍</caption>
28         <s:iterator value="books" status="index">
29             <s:if test="#index.odd == true">
30                 <tr style="background-color: aqua">
31             </s:if>
32             <s:else>
33                 <tr>
34             </s:else>
35                     <td>书名：</td>
36                     <td><s:property/></td>
37                 </tr>
38         </s:iterator>
39     </table>
40     <hr/>
41     <a href="${pageContext.request.contextPath}/index.action">返回首页</a>
42 </body>
43 </html>