struts2简单登录界面

素颜马尾好姑娘i 2023-06-06 12:17 37阅读 0赞

最近小学生接触到了strusts，简单记录下struts的使用。  
首先是配置。小学生使用的是eclipse。  
配置好tomcat后，需要导入一些jar包，如图：  
![在这里插入图片描述][20191011185505911.png]  
其次是web.xml

<?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
      <display-name>Struts1</display-name>
      <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
      </welcome-file-list>
      	<filter>
    		<filter-name>struts2</filter-name>
    		<filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
    	</filter>
    
    	<filter-mapping>
    		<filter-name>struts2</filter-name>
    		<url-pattern>/*</url-pattern>
    	</filter-mapping>
    </web-app>

注意，这里小学生，用的是2.5版本以上的.  
然后，struts2的配置如下：

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
        "http://struts.apache.org/dtds/struts-2.0.dtd">
     <struts>
    	
        
        <constant name="struts.action.extension" value="action" />
        
        <constant name="struts.devMode" value="true" />
        
        <constant name="struts.configuration.xml.reload" value="true" />
        
        <constant name="struts.i18n.encoding" value="utf-8" />
        
        <constant name="struts.i18n.reload" value="true" />
        
        <constant name="struts.enable.DynamicMethodInvocation" value="true"></constant>  
    	
        <package name="/" extends="struts-default">
        	
            <action name="index">
            	
            	<result name="success">/index.jsp</result>
            </action>
           
            <action name="login" class="com.shiyanyi.Login" method="login">
            <result name="success">/success.jsp</result>
            	
            </action> 
            
            
        </package>
    </struts>

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDM1NzY0Ng_size_16_color_FFFFFF_t_70]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDM1NzY0Ng_size_16_color_FFFFFF_t_70 1]  
jsp:表单：

success：表单：

package com.shiyanyi;
    
    import java.io.IOException;
    
    import javax.servlet.ServletRequest;
    import javax.servlet.http.HttpServletRequest;
    
    import org.apache.struts2.ServletActionContext;
    
    import jdk.incubator.http.HttpRequest;
    
    
    public class Login {
    
    	private String username;
    	
    	private String password;
    
    	
    	
    	/**
    	 * @return the username
    	 */
    	public String getUsername() {
    		return username;
    	}
    
    
    
    	/**
    	 * @param username the username to set
    	 */
    	public void setUsername(String username) {
    		this.username = username;
    	}
    
    
    
    	/**
    	 * @return the password
    	 */
    	public String getPassword() {
    		return password;
    	}
    
    
    
    	/**
    	 * @param password the password to set
    	 */
    	public void setPassword(String password) {
    		this.password = password;
    	}
    
    
    
    	public String login() {
    		HttpServletRequest req = ServletActionContext.getRequest();
    		String username = req.getParameter("username");
    		String password = req.getParameter("password");
    		if(!password.equals("123")) {
    			return "error";
    		}
    		return "success";
    
    	}
    	
    	public String register(){
    		HttpServletRequest req = ServletActionContext.getRequest();
    		String username = req.getParameter("username");
    		String password = req.getParameter("password");
    		try {
    			ServletActionContext.getResponse().getWriter().println("register success");
    		} catch (IOException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    		return "success";
    
    	}
    	
    	
    }

注意：  
struts.xml中的 标签name="login"要与 index.jsp中 标签action=“login” 一致；

struts中的name为访问中的前缀

[20191011185505911.png]: /images/20230601/7e5de653392040e48b60cf4b754f480c.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDM1NzY0Ng_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191011190954274.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDM1NzY0Ng==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDM1NzY0Ng_size_16_color_FFFFFF_t_70 1]: /images/20230601/5465d92d906a4019b6546f0fb99463f6.png