No mapping found for HTTP request with URI [/spring/WEB-INF/page/index.jsp] in DispatcherServlet with name 'spring'

本文探讨了SpringMVC中URL映射配置导致的页面无法正常显示的问题,并给出了具体的解决方案,即更改url-pattern从/*到/。

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今天试了下spring mvc遇到个很奇怪的事情,按照书上配置访问时总是出现如下警告:

org.springframework.web.servlet.DispatcherServlet noHandlerFound
警告: No mapping found for HTTP request with URI [/myspring/WEB-INF/jsp/hello.jsp] in DispatcherServlet with name 'spring'

web.xml

Xml代码

  1. <servlet>  
  2.   <servlet-name>spring</servlet-name>  
  3.   <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
  4.   <init-param>  
  5.      <param-name>contextConfigLocation</param-name>  
  6.      <param-value>/WEB-INF/springContext.xml</param-value>  
  7.   </init-param>  
  8. </servlet>  
  9.   
  10. <servlet-mapping>  
  11.   <servlet-name>spring</servlet-name>  
  12.   <url-pattern>/*</url-pattern>  
  13. </servlet-mapping>  

<servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/springContext.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>/*</url-pattern> </servlet-mapping>

 springContext.xml

Xml代码

  1. <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
  2.     <property name="prefix" value="/WEB-INF/jsp/" />  
  3.     <property name="suffix" value=".jsp" />  
  4.  </bean>  
  5.        
  6.  <bean name="/hc"  class="com.hj.controllers.HelloController"/>  

<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value=".jsp" /> </bean> <bean name="/hc" class="com.hj.controllers.HelloController"/>

   HelloController.java

Java代码

  1. @Override  
  2. protected ModelAndView handleRequestInternal(HttpServletRequest request,  
  3.         HttpServletResponse response) throws Exception {  
  4.   
  5.     return new ModelAndView("hello");  
  6. }  

@Override protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception { return new ModelAndView("hello"); }

   在项目/WEB-INF/jsp目录下防止hello.jsp文件。按照上述配置访问http://localhost:8081/myspring /hc,应该是出现hello.jsp内容才对,但是却出现了一开始提到的警告。我搜索了许多地方,结果在一老外的提供中找到了同样的问题(http: //forum.springsource.org/archive/index.php/t-71263.html),解决方法老外也说明了,只是不知 道为什么。

  就是将web.xml中

Xml代码

  1. <servlet-mapping>  
  2.     <servlet-name>spring</servlet-name>  
  3.     <url-pattern>/*</url-pattern>  
  4.   </servlet-mapping>  

<servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>/*</url-pattern> </servlet-mapping>

  改成

 

Java代码

  1. <servlet-mapping>  
  2.     <servlet-name>spring</servlet-name>  
  3.     <url-pattern>/</url-pattern>  
  4.   </servlet-mapping>  

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

  

spring MVC的困惑--url-pattern的/和/*有区别

Spring MVC 遇到的一点点问题

<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1"> <!-- 1. 字符编码过滤器(必须放在第一个filter) --> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 2. 静态资源处理过滤器(新增) --> <filter> <filter-name>staticResourceFilter</filter-name> <filter-class>org.springframework.web.filter.ResourceUrlEncodingFilter</filter-class> </filter> <filter-mapping> <filter-name>staticResourceFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 3. Spring MVC 前端控制器 --> <servlet> <servlet-name>dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/spring/spring-mvc.xml</param-value> </init-param> <init-param> <param-name>throwExceptionIfNoHandlerFound</param-name> <param-value>true</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <!-- 4. 静态资源放行配置(关键修改) --> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>/statics/*</url-pattern> <url-pattern>/images/*</url-pattern> <url-pattern>*.css</url-pattern> <url-pattern>*.js</url-pattern> <url-pattern>*.png</url-pattern> <url-pattern>*.jpg</url-pattern> <url-pattern>*.gif</url-pattern> <url-pattern>*.ico</url-pattern> <url-pattern>*.woff</url-pattern> <url-pattern>*.woff2</url-pattern> <url-pattern>*.ttf</url-pattern> <url-pattern>*.svg</url-pattern> </servlet-mapping> <!-- 5. Spring MVC 映射(必须放在静态资源之后) --> <servlet-mapping> <servlet-name>dispatcher</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- 6. 错误页面配置(可选) --> <error-page> <error-code>404</error-code> <location>/WEB-INF/views/error/404.jsp</location> </error-page> <!-- 7. 欢迎页配置 --> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>/这是web.xml界面/<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>流浪狗救助站 - 首页</title> <link rel="stylesheet" href="${pageContext.request.contextPath}/statics/css/style.css" /> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> <script> $(document).ready(function() { // 动态数字动画效果 $(&#39;.stat-number&#39;).each(function() { var $this = $(this); var target = parseInt($this.text().replace(&#39;+&#39;, &#39;&#39;)); var current = 0; var increment = target / 50; // 控制动画速度 var timer = setInterval(function() { current += increment; if (current >= target) { clearInterval(timer); current = target; $this.text(target + &#39;+&#39;); } else { $this.text(Math.floor(current) + &#39;+&#39;); } }, 20); }); // 平滑滚动到锚点 $(&#39;a[href^="#"]&#39;).on(&#39;click&#39;, function(event) { event.preventDefault(); $(&#39;html, body&#39;).animate({ scrollTop: $($.attr(this, &#39;href&#39;)).offset().top }, 800); }); }); </script> </head> <body> <header class="navbar"> <div class="nav-container"> <ul class="nav-menu"> <li class="active"><a href="${pageContext.request.contextPath}/views/user/home.jsp">首页</a></li> <li><a href="${pageContext.request.contextPath}/dogs">待领养狗狗</a></li> <li><a href="${pageContext.request.contextPath}/views/user/about.jsp">关于我们</a></li> <li><a href="${pageContext.request.contextPath}/views/user/contact.jsp">联系我们</a></li> <c:if test="${not empty sessionScope.user}"> <li><a href="${pageContext.request.contextPath}/logout">退出登录</a></li> </c:if> </ul> </div> </header> <div class="hero"> <h1 class="hero-title">为流浪狗发声,让世界更美好</h1> <p class="hero-subtitle">携手保护流浪动物,共建和谐生态环境</p> <div class="btn-container"> <a href="${pageContext.request.contextPath}/views/login.jsp" class="btn btn-primary">立即行动</a> <a href="#about-section" class="btn btn-secondary">了解更多</a> </div> </div> <section class="stats"> <div class="stat-item"> <div class="stat-number">25+</div> <div class="stat-label">救助项目</div> </div> <div class="stat-item"> <div class="stat-number">1200+</div> <div class="stat-label">志愿者</div> </div> <div class="stat-item"> <div class="stat-number">50+</div> <div class="stat-label">合作伙伴</div> </div> </section> <!-- 新增的详细介绍部分 --> <section id="about-section" class="about-section"> <div class="container"> <h2>关于潦草小狗救助站</h2> <div class="about-content"> <div class="about-text"> <h3>我们的使命</h3> <p>潦草小狗救助站成立于2010年,是一个非营利性组织,致力于为无家可归的流浪狗提供庇护、医疗和寻找永久家庭的机会。我们相信每只狗都值得被关爱和保护。</p> <h3>我们的工作</h3> <p>我们的工作包括:</p> <ul> <li>救助街头流浪狗并提供临时庇护</li> <li>为狗狗提供必要的医疗护理和绝育服务</li> <li>通过领养计划为狗狗寻找永久家庭</li> <li>开展公众教育活动,提高动物保护意识</li> <li>倡导动物福利政策的改进</li> </ul> <h3>我们的成就</h3> <p>自成立以来,我们已经:</p> <ul> <li>救助了超过5000只流浪狗</li> <li>为3000多只狗狗找到了永远的家</li> <li>开展了200多场公众教育活动</li> <li>建立了覆盖全市的志愿者网络</li> </ul> </div> <div class="about-image"> <img src="${pageContext.request.contextPath}/images/rescue-dog.jpg" alt="被救助的狗狗"> </div> </div> </div> </section> <section class="how-to-help"> <div class="container"> <h2>如何帮助它们</h2> <div class="help-options"> <div class="help-option"> <div class="help-icon">🏠</div> <h3>领养</h3> <p>给无家可归的狗狗一个温暖的家。领养不仅拯救了一只狗的生命,也为其他需要救助的狗狗腾出了空间。</p> <a href="${pageContext.request.contextPath}/dogs" class="btn btn-small">查看待领养狗狗</a> </div> <div class="help-option"> <div class="help-icon">🤝</div> <h3>志愿者</h3> <p>加入我们的志愿者团队,参与狗狗的日常照顾、遛狗、清洁等工作。您的每一分钟都能带来改变。</p> <a href="${pageContext.request.contextPath}/views/user/contact.jsp" class="btn btn-small">成为志愿者</a> </div> <div class="help-option"> <div class="help-icon">💝</div> <h3>捐赠</h3> <p>您的捐款将直接用于狗狗的食物、医疗和庇护所运营。每一分钱都能帮助改善狗狗的生活,助力它们走向更好的未来。</p> <a href="#" class="btn btn-small">立即捐赠</a> </div> </div> </div> </section> </body> </html>/这是index.jsp,为什么css文件不体现
最新发布
07-11
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