问题描述
web.xml<?xml version="1.0" encoding="UTF-8"?><web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"><display-name></display-name><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><welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list></web-app>struts.xml<?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"><!-- START SNIPPET: xworkSample --><struts><package name="struts2" extends="struts-default"><action name="login" class="test.LoginAction"><result name="success" type="redirect">index.jsp</result><result name="input">login.jsp</result><result name="error">login.jsp</result></action></package></struts><!-- END SNIPPET: xworkSample -->LoginAction.javapackage test;import com.opensymphony.xwork2.ActionSupport;public class LoginAction extends ActionSupport {/** * */private static final long serialVersionUID = -5102850352318204106L; public String username; public String password; public String execute(){ if(!username.equals("admin")){ super.addFieldError("username：", "用户名错误"); return ERROR; } if(!username.equals("001")){ super.addFieldError("password：", "密码错误"); return ERROR; } return SUCCESS; } public void validate(){ if(username == null||username.length() == 0){ super.addActionError("用户名不能为空！"); } }}访问方式：http://localhost:8080/test/login.jsp问题：404错误，路径有什么问题？求指点
解决方案
解决404问题有几个步骤.1.看tomcat是否正常启动,访问tomcat欢迎页是否成功.2.看访问的项目名字是否正确.3.如果直接访问jsp,看jsp路径是否正确.4.如果访问Action,看是否进入Action方法(有时找不到返回的页面也报404).5.看返回的页面是否正确.按照这个思路来就能解决.我看你这个问题,不是tomcat没正常启动,就是项目名不对.
解决方案二：
你web.xml默认的是访问首页，你要指明路径才行
解决方案三：
把login.jsp放在这里<welcome-file-list><welcome-file>login.jsp</welcome-file></welcome-file-list> 或者访问http://localhost:8080/test/login