Http 404 错误：找不到资源 - STS答案

【问题标题】：Htto 404 Error :Resource Not Found - STSHttp 404 错误：找不到资源 - STS
【发布时间】：2013-04-25 12:50:15
【问题描述】：

我是 Java Spring MVC 的新手。我创建了一个示例项目，但我似乎得到了 Resource NOT found 错误

src/main/webapp/WEB-INF/spring/appServlet/servlet-context.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->

<!-- Enables the Spring MVC @Controller programming model -->
<mvc:annotation-driven />

<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<mvc:resources mapping="/resources/**" location="/resources/" />

<!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/views/" />
    <property name="suffix" value=".jsp" />
</beans:bean>

<context:component-scan base-package="com.shr.myapp" />

包 com.shr.myapp.Controllers.TrampsController.java

package com.shr.myapp.Controllers;

import java.util.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
public class TrampsController {

 private static final Logger logger = LoggerFactory.getLogger(TrampsController.class);

 private static List<String> tramps ;

  public TrampsController() {
      tramps= new ArrayList<String>();
      populate(tramps);
  }

  @RequestMapping(value = "/tramps", method = RequestMethod.GET)
  public String list(Model model) {
    logger.info("Listing Walks");
    model.addAttribute("tramps",tramps);
    return "tramps/list";
  }

private void populate(List<String> tramps) {
    tramps.add("Lake Waikaremoana Great Walk");     
    tramps.add("Kepler Track");
    tramps.add("Milford Track");
    tramps.add("Routeburn Track");
    tramps.add("Rakiura Track");
  }
}

WEB-INF/views/tramps/list.jsp;

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ page session="false" %>
<html>
<head>
<link href="<c:url value="/resources/css/tramps.css" />" rel="stylesheet" type="text/css" media="screen" />
<title>Listing Tramps</title>
</head>
<body>
<div class="container">
<h1>Tramps of New Zealand</h1>


<table class="normal-table">
    <thead>
        <tr>
            <th>Key</th>
        </tr>
    </thead>
     <tbody>
    <c:forEach var="tramp" items="${tramps}">
        <tr>
            <td><c:out value="${tramp}"/></td>

        </tr>
    </c:forEach>
    </tbody>
</table>


</div>
</body>
</html>

web.xml

<?xml version="1.0" encoding="UTF-8"?>

http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

<!-- The definition of the Root Spring Container shared by all Servlets and Filters -->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/spring/root-context.xml</param-value>
</context-param>

<!-- Creates the Spring Container shared by all Servlets and Filters -->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!-- Processes application requests -->
<servlet>
    <servlet-name>appServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>appServlet</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

我不明白我应该如何解决这个问题。请帮助我

【问题讨论】：

请添加您正在使用的网址
请也添加web.xml
@Lilith2k3 嗨，我还提供了 web.xml 文件。请看一下
@BoboZohdy localhost:8080/myapp/WEB-INF/views/tramps/list.jsp

标签： java spring spring-mvc

【解决方案1】：

根据您分享的网址，您使用的网址有误

localhost:8080/myapp/tramps

不是

localhost:8080/myapp/WEB-INF/views/tramps/list.jsp

调用控制器方法，如果你是spring mvc的新手，请查看我的YT channel

【讨论】：

如果他的应用响应 localhost:8080 ;)
@Bobo Zohdy 我如何设置这个网址？
您正在使用 @RequestMapping(value = "/tramps", method = RequestMethod.GET) 如果您是 spring MVc 的新手，这会将“/tramps”映射到此控制器方法，请在此处查看我的 YT 频道youtube.com/playlist?list=PL7350712B99EFC5DD

【解决方案2】：

我不确定这是您问题的根本原因，但您的代码至少有两个错误。

您需要在 servlet-context.xml 中为 bean 条目指定“beans”前缀。

<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <beans:property name="prefix" value="/WEB-INF/views/" />
    <beans:property name="suffix" value=".jsp" />
</beans:bean>

list.jsp 中的tramp 变量没有“key”和“value”属性，因为它的类型是String。

<c:forEach var="tramp" items="${tramps}">
    <tr>
        <td>${tramp}</td>
    </tr>
</c:forEach>

希望这会有所帮助。

【讨论】：

嘿，感谢您提到错误。但我仍然遇到相同的错误。是不是我在重新运行项目时犯了一些错误。我转到 list.jsp 页面->右键单击->运行为->在服务器上运行。这是我要做的。