p.s 关键在于struts.xml中的匹配，使用* ,{}以及${}可以让代码更加简洁清晰
代码核心思路 在struts.xml中通过路由(url)去指定控制逻辑的Action中的方法,例如
<package name="admin" namespace="/admin" extends="struts-global"><action name="login_*" class="com.zy.javaee.controller.actions.AdminLoginAction" method="{1}"><result name="success">${directUrl}</result><param name="defaultAdmin.username">testadmin</param><param name="defaultAdmin.password">123</param></action></package>
复制代码中{1}指向login_*中的*部分, 访问/admin/login_adminLoginPage则{1}代表adminLoginPage,method={1},则路由的控制权转至AdminLoginAction.java中的adminLoginPage()方法,其次是${directUrl}指向了AdminLoginAction.jav继承的BaseAction.java中的getDirectUrl(),在AdminLoginAction.java中填充跳转页面路由即可实现由控制器控制跳转页面
普通用户登录 http://localhost:8080/users/login_userLoginPage 管理员用户登录http://localhost:8080/admin/login_adminLoginPage 默认登录 http://localhost:8080/login
<constant name="struts.i18n.encoding" value=“GBK"/> 支持中文 支持多个扩展名 设置浏览器不缓存静态内容 设置自动重新加载struts.xml
github: https://github.com/joeytsai03/javaee_test2.git
运行情况
整体的目录结构
User代码
package com.zy.javaee.domin;/*** Created by Joey_Tsai on 2018/3/9.*/
public class User {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;}private String username;private String password;}复制代码UserLoginAction 代码
package com.zy.javaee.controller.actions;import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.zy.javaee.controller.BaseAction;
import com.zy.javaee.domin.User;/*** Created by Joey_Tsai on 2018/3/19.*/
public class UserLoginAction extends BaseAction {private User user;private User defaultUser;public String userLoginPage(){setDirectUrl("/html/userLoginPage.jsp");return SUCCESS;}public String login(){if (getUser().getUsername().equals(getDefaultUser().getUsername()) && getUser().getPassword().equals(getDefaultUser().getPassword())) {ActionContext.getContext().getSession().put("user",user);setDirectUrl("/html/helloPage.jsp");return SUCCESS;} else {return userLoginPage();}}public User getUser() {return user;}public void setUser(User user) {this.user = user;}public User getDefaultUser() {return defaultUser;}public void setDefaultUser(User defaultUser) {this.defaultUser = defaultUser;}}复制代码LoginAction-conversion.properties
user=com.zy.javaee.UserConverter
复制代码userLoginPage
Created by IntelliJ IDEA.User: Joey_TsaiDate: 2018/3/19Time: 14:14To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head><title>普通用户登陆界面</title>
</head>
<body><a href="/login">普通用户登陆</a>
<a href="/admin/login_adminLoginPage">管理员登陆</a><h1>普通用户登陆</h1>
<s:form action="/users/login_login" method="POST"><table><tr><td><s:textfield name="user.username" label="用户名" value="testuser"/></td></tr><tr><td><s:password name="user.password" label="密码" value="123"/></td></tr><tr><td colspan="2" style="text-align: center"><s:submit value="登录"/></td></tr></table>
</s:form>
</body>
</html>复制代码UserConverter
package com.zy.javaee;import com.zy.javaee.domin.User;
import ognl.DefaultTypeConverter;import java.util.Map;/*** Created by Joey_Tsai on 2018/3/9.*/
public class UserConverter extends DefaultTypeConverter {public Object convertValue(Map context, Object value, Class toType){/*如果是要转换成User对象*/if (toType==User.class) {/*页面传递过来的参数被封装成了String[]*/String[] params = (String[]) value;User user = new User();/*取出user字符串，按,分割成数组*/String[] uservalues = params[0].split(",");user.setUsername(uservalues[0]);user.setPassword(uservalues[1]);return user;}/*页面要显示user参数值，则要转换成字符串*/else if (toType==String.class) {User user =(User)value;return "姓名:"+user.getUsername()+", 密码:"+user.getPassword();}return null;}}复制代码struts.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC"-//Apache Software Foundation//DTD Struts Configuration 2.5//EN""http://struts.apache.org/dtds/struts-2.5.dtd">
<struts><constant name="struts.i18n.encoding" value="GBK"/><constant name="struts.action.extension" value="do,action,"/><constant name="struts.serve.static.browserCache" value="false"/><constant name="struts.configuration.xml.reload" value="true"/><package name="struts-global" namespace="/" extends="struts-default"><global-results><result name="exception" >/error.jsp</result></global-results><global-exception-mappings><exception-mapping result="exception" exception="java.lang.Exception"></exception-mapping></global-exception-mappings><action name="tryException" class="com.zy.javaee.controller.actions.ErrorProcessAction" method="tryException"><result name="success">/users/login_userLoginPage.do</result></action></package><package name="default" namespace="/" extends="struts-global"><action name="login"><result type="redirect">/users/login_userLoginPage.action</result></action></package><package name="admin" namespace="/admin" extends="struts-global"><action name="login_*" class="com.zy.javaee.controller.actions.AdminLoginAction" method="{1}"><result name="success">${directUrl}</result><param name="defaultAdmin.username">testadmin</param><param name="defaultAdmin.password">123</param></action></package><package name="users" namespace="/users" extends="struts-global"><action name="login_*" class="com.zy.javaee.controller.actions.UserLoginAction" method="{1}"><result name="success">${directUrl}</result><param name="defaultUser.username">testuser</param><param name="defaultUser.password">123</param></action></package>
</struts>
复制代码xwork-conversion.properties
com.zy.javaee.domin.User=com.zy.javaee.UserConverter
复制代码web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"version="3.1"><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>
复制代码index.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head><title>实验2</title>
</head>
<body>
<a href="/login">普通用户登陆</a>
<a href="/admin/login_adminLoginPage">管理员登陆</a></body>
</html>
复制代码error.jsp
<%--Created by IntelliJ IDEA.User: Joey_TsaiDate: 2018/3/19Time: 17:40To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head><title>页面错误</title>
</head>
<body><%--<s:property value="exception.message"/>--%>
<%--<s:property value="exceptionStack"/>--%>
<s:debug></s:debug>
</body>
</html>复制代码helloPage.jsp
<%--Created by IntelliJ IDEA.User: Joey_TsaiDate: 2018/3/19Time: 14:36To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head><title>欢迎页面</title>
</head>
<body>
<a href="/login">普通用户登陆</a>
<a href="/admin/login_adminLoginPage">管理员登陆</a><h1><s:property value="user.username"/></h1>
登陆成功!!!!
</body>
</html>
复制代码adminLoginPage.jsp
<%--Created by IntelliJ IDEA.User: Joey_TsaiDate: 2018/3/19Time: 14:14To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head><title>管理员登陆界面</title>
</head>
<body>
<a href="/login">普通用户登陆</a>
<a href="/admin/login_adminLoginPage">管理员登陆</a><h1>管理员登陆</h1>
<s:form action="/admin/login_login" method="POST"><table><tr><td><s:textfield name="user.username" label="用户名" value="testadmin"/></td></tr><tr><td><s:password name="user.password" label="密码" value="123"/></td></tr><tr><td colspan="2" style="text-align: center"><s:submit value="登录"/></td></tr></table>
</s:form>
</body>
</html>复制代码AdminLoginAction
<%--Created by IntelliJ IDEA.User: Joey_TsaiDate: 2018/3/19Time: 14:14To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head><title>管理员登陆界面</title>
</head>
<body>
<a href="/login">普通用户登陆</a>
<a href="/admin/login_adminLoginPage">管理员登陆</a><h1>管理员登陆</h1>
<s:form action="/admin/login_login" method="POST"><table><tr><td><s:textfield name="user.username" label="用户名" value="testadmin"/></td></tr><tr><td><s:password name="user.password" label="密码" value="123"/></td></tr><tr><td colspan="2" style="text-align: center"><s:submit value="登录"/></td></tr></table>
</s:form>
</body>
</html>复制代码ErrorProcessAction
package com.zy.javaee.controller.actions;import com.opensymphony.xwork2.ActionContext;
import com.zy.javaee.controller.BaseAction;
import com.zy.javaee.domin.User;import java.sql.SQLException;/*** Created by Joey_Tsai on 2018/3/19.*/
public class ErrorProcessAction extends BaseAction {public String tryException() throws Exception {throw new Exception();}}复制代码BaseAction
package com.zy.javaee.controller;import com.opensymphony.xwork2.ActionSupport;/*** Created by Joey_Tsai on 2018/3/19.*/
public abstract class BaseAction extends ActionSupport{private String directUrl;public String getDirectUrl() {return directUrl;}public void setDirectUrl(String directUrl) {this.directUrl = directUrl;}
}复制代码
