layout: post
title: struts2实验2:struts2.xml action中* ,{}以及${}
categories: STRUTS2
description: struts2实验2:struts2.xml action中* ,{}以及${}
keywords: STRUTS2
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
${directUrl}
testadmin
123
中{1}指向login_*中的*部分, 访问/admin/login_adminLoginPage则{1}代表adminLoginPage,method={1},则路由的控制权转至AdminLoginAction.java中的adminLoginPage()方法,其次是${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
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
初始界面
普通用户登陆
普通用户登陆成功
管理员登陆
管理员登陆成功
异常处理
整体的目录结构
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;
}
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;
}
}
LoginAction-conversion.properties
user=com.zy.javaee.UserConverter
userLoginPage
Created by IntelliJ IDEA.
User: Joey_Tsai
Date: 2018/3/19
Time: 14:14
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags"%>
普通用户登陆界面
普通用户登陆
管理员登陆
普通用户登陆
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;
}
}
struts.xml
/error.jsp
/users/login_userLoginPage.do
/users/login_userLoginPage.action
${directUrl}
testadmin
123
${directUrl}
testuser
123
xwork-conversion.properties
com.zy.javaee.domin.User=com.zy.javaee.UserConverter
web.xml
struts2
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
struts2
/*
index.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags"%>
实验2
普通用户登陆
管理员登陆
error.jsp
<%--
Created by IntelliJ IDEA.
User: Joey_Tsai
Date: 2018/3/19
Time: 17:40
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags"%>
页面错误
<%--helloPage.jsp
<%--
Created by IntelliJ IDEA.
User: Joey_Tsai
Date: 2018/3/19
Time: 14:36
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags"%>
欢迎页面
普通用户登陆
管理员登陆
登陆成功!!!!
adminLoginPage.jsp
<%--
Created by IntelliJ IDEA.
User: Joey_Tsai
Date: 2018/3/19
Time: 14:14
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags"%>
管理员登陆界面
普通用户登陆
管理员登陆
管理员登陆
AdminLoginAction
<%--
Created by IntelliJ IDEA.
User: Joey_Tsai
Date: 2018/3/19
Time: 14:14
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags"%>
管理员登陆界面
普通用户登陆
管理员登陆
管理员登陆
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();
}
}
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;
}
}