Java 在spring mvc中找不到http错误404资源
web.xmlJava 在spring mvc中找不到http错误404资源,java,xml,spring,spring-mvc,servlets,Java,Xml,Spring,Spring Mvc,Servlets,web.xml <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/w
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
<display-name>ValidationForm</display-name>
<servlet>
<servlet-name>spring-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>spring-dispatcher</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app> spring-dispatcher-servlet.xml <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
<display-name> ValidationForm</display-name> <servlet>
<servlet-name>spring-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> </servlet>
<servlet-mapping>
<servlet-name>spring-dispatcher</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping>
</web-app>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form action="/wel" method="post">
name:<input type="text" name="name" placeholder="UserName">
<br> password:<input type="password" name="pass" placeholder="Password">
<br>
<input type="submit" value="login">
</form>
</body>
</html>
package jbr.springmvc.controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
@Controller public class HomeController {
@RequestMapping(value = "demo1/wel", method = RequestMethod.POST)
public ModelAndView hello(HttpServletRequest req,HttpServletResponse res) {
String name=req.getParameter("name");
String pass=req.getParameter("pass");
if(name.equals("mohit")&&pass.equals("admin")) {
String messege="Welcome"+name;
return new ModelAndView("welcomepage","message",messege);
}
else
{ return new ModelAndView("errorpage","message","Authantication Failed");
}
} }
在这将显示错误404资源未找到我真的不知道发生了什么,因为我在春天的新。请帮帮我。
提前感谢。当我检查此代码是否正常工作时: Web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>ValidationForm</display-name>
<servlet>
<servlet-name>spring-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
尝试使用它您需要配置视图解析器。
You need to configure your view resolver.
1. first create spring-dispatcher.xml file.
2. Add view resolver configuration in your xml file.
<beans:property name="prefix" value="/WEB-INF/views/" />
<beans:property name="suffix" value=".jsp" />
3. place jsp file in views folder under webapp--> WEB-INF.
4. Now view resolver will find jsp at this path " /WEB-INF/views/yoursjspname.jsp ".
1.首先创建spring-dispatcher.xml文件。
2.在xml文件中添加视图解析器配置。
3.将jsp文件放在webapp-->WEB-INF下的“视图”文件夹中。
4.现在,视图解析器将在路径“/WEB-INF/views/yoursjspname.jsp”中找到jsp。
您必须首先正确格式化它,并提供项目结构有welcomepage.jsp
吗?是的,我还有welcomepage和errorpage
package com.demo.spring.controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
@Controller
public class HomeController {
@RequestMapping(value = "/", method = RequestMethod.GET)
public ModelAndView welcome() {
return new ModelAndView("welcome");
}
@RequestMapping(value = "demo1/wel", method = RequestMethod.POST)
public ModelAndView hello(HttpServletRequest req, HttpServletResponse res) {
String name = req.getParameter("name");
String pass = req.getParameter("pass");
if (name.equals("mohit") && pass.equals("admin")) {
String messege = "Welcome" + name;
return new ModelAndView("welcome", "message", messege);
} else {
return new ModelAndView("errorpage", "message", "Authantication Failed");
}
}
}
You need to configure your view resolver.
1. first create spring-dispatcher.xml file.
2. Add view resolver configuration in your xml file.
<beans:property name="prefix" value="/WEB-INF/views/" />
<beans:property name="suffix" value=".jsp" />
3. place jsp file in views folder under webapp--> WEB-INF.
4. Now view resolver will find jsp at this path " /WEB-INF/views/yoursjspname.jsp ".