Question

我是Spring的新手，尝试使用带有spring mvc的maven的一个用户注册示例。我可以在我的主页上午餐，但是当我点击登录链接时，却找不到404错误页面。以下是我的申请详情： -

Web.xml中

<web-app id = "WebApp_ID" version = "2.4"
   xmlns = "http://java.sun.com/xml/ns/j2ee" 
   xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation = "http://java.sun.com/xml/ns/j2ee 
   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

      <display-name>Archetype Created Web Application</display-name>
    <welcome-file-list>
        <welcome-file>home.jsp</welcome-file>
    </welcome-file-list>
    <servlet>
        <servlet-name>spring-mvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>spring-mvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

DispacterServlet： -

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://www.springframework.org/schema/beans  http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context  http://www.springframework.org/schema/context/spring-context-3.0.xsd">
    <import resource="classpath.*:jbr/config/user-beans.xml" />
    <context:component-scan base-package="jbr.springmvc" />
    <context:annotation-config />
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>
</beans>

控制器： -

package jbr.springmvc.controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import jbr.springmvc.model.Login;
import jbr.springmvc.model.User;
import jbr.springmvc.service.UserService;
@Controller
public class LoginController {
  @Autowired
  UserService userService;
  @RequestMapping(value = "/login", method = RequestMethod.GET)
  public ModelAndView showLogin(HttpServletRequest request, HttpServletResponse response) {
    ModelAndView mav = new ModelAndView("login");
    mav.addObject("login", new Login());
    return mav;
  }
  @RequestMapping(value = "/loginProcess", method = RequestMethod.POST)
  public ModelAndView loginProcess(HttpServletRequest request, HttpServletResponse response,
  @ModelAttribute("login") Login login) {
    ModelAndView mav = null;
    User user = userService.validateUser(login);
    if (null != user) {
    mav = new ModelAndView("welcome");
    mav.addObject("firstname", user.getFirstname());
    } else {
    mav = new ModelAndView("login");`enter code here`
    mav.addObject("message", "Username or Password is wrong!!");
    }
    return mav;
  }
}

的Login.jsp

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
    <%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1" %>
        <!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=ISO-8859-1">
            <title>Login</title>
        </head>
        <body>
            <form:form id="loginForm" modelAttribute="login" action="loginProcess" method="post">
                <table align="center">
                    <tr>
                        <td>
                            <form:label path="username">Username: </form:label>
                        </td>
                        <td>
                            <form:input path="username" name="username" id="username" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <form:label path="password">Password:</form:label>
                        </td>
                        <td>
                            <form:password path="password" name="password" id="password" />
                        </td>
                    </tr>
                    <tr>
                        <td></td>
                        <td align="left">
                            <form:button id="login" name="login">Login</form:button>
                        </td>
                    </tr>
                    <tr></tr>
                    <tr>
                        <td></td>
                        <td><a href="home.jsp">Home</a>
                        </td>
                    </tr>
                </table>
            </form:form>
            <table align="center">
                <tr>
                    <td style="font-style: italic; color: red;">${message}</td>
                </tr>
            </table>
        </body>
        </html>

我已经尝试了这么多，但却无法找到任何解决方案。请帮我弄清楚我做错了什么。这是我春天的第一次申请，因此无法再进行任何分析。请指导我这个

Answer 1

您已在欢迎文件列表中指定了home.jsp。我没有在您的文件路径中看到home.jsp文件。可能是你扔了404.你有一个login.jsp。让控制器从控制器返回“登录”。无论是明智的作品。既然你作为初学者提到过，你可以在这里查看引导基本应用程序。

https://github.com/mrakhunathan/SpringWebSkeleton.git

Spring页面导航中的问题日志中找不到映射错误

1 个答案: