struts2实验2:struts2.xml action中* ,{}以及${}

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

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