Struts2页面调转设置

缺乏、安全感 2022-07-21 01:59 164阅读 0赞

1.在Web-INF/jsp新建index.jsp,reg.jsp,login.jsp文件

<%@ 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>reg.jsp</title>
    </head>
    <body>
    Reg !
    <hr>
        <form action="user!getReg.action" method="get">
            用户名：<input type="text" name="username"><br> 
            密码：<input type="password" name="password"><br> 
            确认密码：<input type="password" name="con_passward"><br> 
            <input
                type="submit" value="注册">
        </form>
    </body>
    </html>

提交到user!getReg.action

<%@ 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>login.jsp</title>
    </head>
    <body>
        Login !
        <hr>
     <h4>${msg }欢迎你  ${username }</h4>
        <form action="user!toIndex.action" method="get">
    
            用户名：<input type="text" name="username"><br> 
            密码：<input type="password" name="passward"><br> 
            <input
                type="submit">
        </form>
    </body>
    </html>

跳转到user!toIndex.action

2，使用一个bean接收注册信息,新建User.java

public class User {
    
        private String username;
        private String password;
        public User() {
            // TODO Auto-generated constructor stub
        }
        public User(String username, String password) {
    
            this.username = username;
            this.password = password;
        }
        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;
        }
        @Override
        public String toString() {
            return "User [username=" + username + ", password=" + password + "]";
        }
    }

3.在action包中新建UserAction处理jsp

import com.opensymphony.xwork2.ActionSupport;
    import com.qishui.bean.User;
    
    public class UserAction extends ActionSupport {
        
    
        private static final long serialVersionUID = 1L;
        //第一种方式，还可以使用域模型，把数据封装到user
        //后台向前台传值
        private String username;
        private String password;
        private String con_password;
        // 前台，向后台
        private String msg;
    
        // 接受参数
        public String getReg() {
    
            User user = new User(username, password);
            System.out.println(user);
    
            msg = "注册成功！";//当填完注册信息提交时，msg被赋值。
    
            return "toLogin";//在struts.xml中指向相关的jsp
    
        }
    
        public String toLogin() {
    
            System.out.println("toLogin");
    
            return "toLogin";
    
        }
    
        public String toReg() {
    
            System.out.println("toReg");
    
            return "toReg";
    
        }
    
        public String toIndex() {
    
            System.out.println("toIndex");
    
            return "index";
    
        }
    
        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;
        }
    
        public String getCon_password() {
            return con_password;
        }
    
        public void setCon_password(String con_password) {
            this.con_password = con_password;
        }
    
        public String getMsg() {
            return msg;
        }
    
        public void setMsg(String msg) {
            this.msg = msg;
        }
    
    }

4.在struts.xml中配置路径

<?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>
    
        
        <constant name="struts.enable.DynamicMethodInvocation" value="true" />
        <constant name="struts.devMode" value="true" />
    
        <package name="default" namespace="/" extends="struts-default">
    
            
            
            <action name="user" class="com.qishui.action.UserAction">
                <result name="toLogin">/WEB-INF/jsp/login.jsp</result>
                <result name="toReg">/WEB-INF/jsp/reg.jsp</result>
                <result name="index">/WEB-INF/jsp/index.jsp</result>
            </action>
    
        </package>
    </struts>

5.访问效果

![这里写图片描述][20160712223347893]

![这里写图片描述][20160712223403221]

![这里写图片描述][20160712223419691]

//以下的是采用不同方式对action的解析

6.使用不同方式相同效果

在UserAction.java中使用user包装

import com.opensymphony.xwork2.ActionSupport;
    import com.qishui.bean.User;
    
    public class UserAction extends ActionSupport {
        
    
        private static final long serialVersionUID = 1L;
        // 使用域模型，把数据封装到user
        // 后台向前台传值
        private User user;
        public User getUser() {
            return user;
        }
    
        public void setUser(User user) {
            this.user = user;
        }
    
        private String con_password;
        // 前台，向后台
        private String msg;
    
        // 接受参数
        public String getReg() {
    
            System.out.println(user);
    
            msg = "注册成功！";// 当填完注册信息提交时，msg被赋值。
    
            return "toLogin";// 在struts.xml中指向相关的jsp
    
        }
    
        public String toLogin() {
    
            System.out.println("toLogin");
    
            return "toLogin";
    
        }
    
        public String toReg() {
    
            System.out.println("toReg");
    
            return "toReg";
    
        }
    
        public String toIndex() {
    
            System.out.println("toIndex");
    
            return "index";
    
        }
    
        public String getCon_password() {
            return con_password;
        }
    
        public void setCon_password(String con_password) {
            this.con_password = con_password;
        }
    
        public String getMsg() {
            return msg;
        }
    
        public void setMsg(String msg) {
            this.msg = msg;
        }
    
    }

在reg.jsp中使用user.username和user.password对于在User中没有的属于不能使用域模型，不用改变，在UserAction中定义，并set,get方法即可。

<%@ 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>reg</title>
    </head>
    <body>
    Reg !
    <hr>
        <form action="user!getReg.action" method="get">
            用户名：<input type="text" name="user.username"><br> 
            密码：<input type="password" name="user.password"><br> 
            确认密码：<input type="password" name="con_passward"><br> 
            <input
                type="submit" value="注册">
        </form>
    </body>
    </html>

7.设置静态访问路径

a,配置所有

<?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>
    
        
        <constant name="struts.enable.DynamicMethodInvocation" value="true" />
        <constant name="struts.devMode" value="false" />
    
        <package name="default" namespace="/" extends="struts-default">
    
    <action name="user*" class="com.qishui.action.UserAction" 
        method="{1}"> 
        <result name="toLogin">/WEB-INF/jsp/login.jsp</result> 
        <result name="toReg">/WEB-INF/jsp/reg.jsp</result>
         <result name="index">/WEB-INF/jsp/index.jsp</result> 
        </action> 
    
        </package>
    </struts>

i.将struts.devMode设置为false，对于他们相应的访问路径

[http://localhost:8888/Struts/usertoReg.action][http_localhost_8888_Struts_usertoReg.action]  
[http://localhost:8888/Struts/usertoLogin.action][http_localhost_8888_Struts_usertoLogin.action]  
[http://localhost:8888/Struts/usertoIndex.action][http_localhost_8888_Struts_usertoIndex.action]

其中action中name表示一种样式，在访问路径前的样式，‘\*’表示匹配所有，class表示要处理action的完整类名，method表示name中第一个所接过的第一个参数，如此method=“\{1\}\{2\}”表示可以接两个参数，而它的参数正是在result中匹配,而result中的name值正是UserAction中各个方法中返回的字符串！

ii:相应的在提交表单的时候action也要作出相应的改变  
//在UserAction中使用的是域模型，相应的name，password也添加name.属性值

<%@ 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>login.jsp</title>
    </head>
    <body>
        Login !
        <hr>
     <h4>${msg }欢迎你  ${user.username }</h4>
        <form action="usertoIndex.action" method="get">
    
            用户名：<input type="text" name="username"><br> 
            密码：<input type="password" name="passward"><br> 
            <input
                type="submit">
        </form>
    </body>
    </html>

<%@ 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>reg</title>
    </head>
    <body>
    Reg !
    <hr>
        <form action="usertoLogin.action" method="get">
            用户名：<input type="text" name="user.username"><br> 
            密码：<input type="password" name="user.password"><br> 
            确认密码：<input type="password" name="con_passward"><br> 
            <input
                type="submit" value="注册">
        </form>
    </body>
    </html>

b.单个配置

<?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>
    
        
        <constant name="struts.enable.DynamicMethodInvocation" value="true" />
        <constant name="struts.devMode" value="false" />
    
        <package name="default" namespace="/" extends="struts-default">
        <action name="usertoLogin" class="com.qishui.action.UserAction" method="toLogin"> 
        <result name="toLogin">/WEB-INF/jsp/login.jsp</result> 
        </action> 
    
        <action 
        name="usertoReg" class="com.qishui.action.UserAction" method="toReg"> 
        <result name="toReg">/WEB-INF/jsp/reg.jsp</result> 
        </action> 
    
        <action 
        name="usertoIndex" class="com.qishui.action.UserAction" method="toIndex"> 
        <result name="index">/WEB-INF/jsp/index.jsp</result> 
        </action>
        </package>
    </struts>

单个配置，没有相应规则，访问只要name.action即可，当然项目名之前肯定要加，其配置路径与上一个静态模式路径一致，所以在form中不需要改变action.

处理action方法如下，其中返回值查上面！

![这里写图片描述][20160712233301724]

c.一般来说，不会采取在xml中设置jsp，而是采用注解方式，这就必须使用更多的jar包。

[20160712223347893]: /images/20220720/5ac9537d4f4e494fae78e3e0dc611c3c.png
[20160712223403221]: /images/20220720/6d207ce3bd2e4daf959b17ce9ae198bd.png
[20160712223419691]: /images/20220720/86d7c42e20b64bc88ecc1552197fcab2.png
[http_localhost_8888_Struts_usertoReg.action]: http://localhost:8888/Struts/usertoReg.action
[http_localhost_8888_Struts_usertoLogin.action]: http://localhost:8888/Struts/usertoLogin.action
[http_localhost_8888_Struts_usertoIndex.action]: http://localhost:8888/Struts/usertoIndex.action
[20160712233301724]: /images/20220720/ed48ba725a564462bdb6e4d274bc75da.png