创建Struct2的web应用(一)
2024-10-13 20:07:46
1.上http://struts.apache.org/ 下载Struct2
2.解压缩,将lib文件夹内的部分JAR复制到java web应用的WEB-INF/lib目录下。所需JAR:
commons-fileupload-x.y.z.jar
commons-io-x.y.z.jar
commons-lang-x.y.jar
commons-logging-x.y.z.jar
commons-logging-api-x.y.jar
freemarker-x.y.z.jar
javassist-.xy.z.GA
ognl-x.y.z.jar
struts2-core-x.y.z.jar
xwork-core.x.y.z.jar
3.在WEB-INF下的web.xml(如果没有,就自己创建)输入以下代码:
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="3.0" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>
4.创建一个login.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <% 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>stuct2应用</title> </head> <body> <form action="login.action" method="post"> <table> <tr> <td>用户名:</td> <td><input type="text" name="userName"></td> </tr> <tr> <td>密码:</td> <td><input type="password" name="password"></td> </tr> <tr> <td colspan="2"> <input type="submit" value="登陆"> </td> </tr> </table> </form> </body> </html>
5.在java Resources/src目录下创建一个package,叫myWeb(名字随你喜欢),在该package下创建一个类LoginAction.java
package myWeb; public class LoginAction { private String userName; private String password; public String execute() { if(getUserName().equals("kaima") && getPassword().equals("asd")) return "success"; else return "error"; } 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; } }
6.配置Action
在WEB-INFO下创建一个名为classes的目录,在该目录下创建一个structs.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <package name="myStruct" extends="struts-default"> <action name="login" class="myWeb.LoginAction"> <result name="success">/welcome.jsp</result> <result name="error">/error.jsp</result> </action> </package> </struts>
7.完善
创建welcome.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!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> <h1>welcome</h1> </body> </html>
创建error.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!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> <h2>error</h2> </body> </html>
到这里,一个structs应用就完成了,如下所示:
PS.在构建structs2时,有时会遇到HTTP Status 404问题,这时需要重启服务器。原因是什么得在学习structs2的过程中找了。
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