struts2实验2:struts2.xml action中*

作者: JoeyTsai | 来源:发表于2018-03-19 21:34 被阅读0次

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

<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>

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
<constant name="struts.action.extension" value="do,action,"/> 支持多个扩展名
<constant name="struts.serve.static.browserCache" value="false"/> 设置浏览器不缓存静态内容
<constant name="struts.configuration.xml.reload" value="true"/> 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"%>
<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>

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

<?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>

xwork-conversion.properties

com.zy.javaee.domin.User=com.zy.javaee.UserConverter

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>

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>

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"%>
<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>

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"%>
<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>

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"%>
<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>

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"%>
<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>

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;
    }
}

struts2实验2:struts2.xml action中*

keywords: STRUTS2

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