项目在IDEA中搭建的，webapp文件下的结构如下所示：
|webapp
---- static //存放的js、css等文件位置
-------- js
-------- css
---- WEB-INF
-------- web.xml
-------- index.jsp
-------- login.jsp
下面是我的web.xml文件DispatcherServlet的配置：
<!-- spring mvc servlet -->
<servlet>
<servlet-name>springMvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springMvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>/index.jsp</welcome-file>
</welcome-file-list>spring-mvc的部分配置如下：
<!-- 自动扫描controller包下的所有类，使其认为spring mvc的控制器 -->
<context:component-scan base-package="com.myjob.controller"/>
<mvc:resources location="/static/" mapping="/static/**" cache-period="864000"/>index.jsp文件内容很简单，就是一个跳转链接。
<%@ taglib prefix="logic" uri="http://struts.apache.org/tags-logic" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title></title>
</head>
<body>
<a href="/welcome">连接</a>
</body>
</html>对应的Controller代码如下：
@Controller
@RequestMapping("/")
public class WelcomeController {
@RequestMapping("welcome")
public String welcome() {
return "login";
}
}login.jsp页面中引入了我自己下载的jquery库，引入代码如下：
<script src="/static/js/jquery-3.1.0.min.js"></script>我在spring-mvc.xml文件中。首先没有配置<mvc:resources location="/static/" mapping="/static/**" cache-period="864000"/>的时候，网页可以正常跳转（但是js、css引入报404 not found的错误）。
后来在网上查找解决方法后，加上了上述的配置，但是这个时候网页跳转却出现了问题。报错如下：No mapping found for HTTP request with URI [/welcome] in DispatcherServlet with name 'springMvc'。
请教下这是为什么，该怎么修改？感激不尽！
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
You can try to use
<mvc:default-servlet-handler />
instead of
<mvc:resources location="/,classpath:/META-INF/publicResources/" mapping="/resources/**"/ >
You can release the resources of the specified path like this. The template above
releases it like this in your project:
<context:component-scan/>表示启动spring的扫描功能，扫描有@Controller @Service等注解的java类，就把类实例化bean，然后完成注入，但是是不能将URL请求映射到对应的控制器的，所以需要再增加一个配置<mvc:annotation-driven />, so that the URL can be mapped to the corresponding controller and corresponding method<mvc:resources location="classpath:/js/" mapping="/js/**"/>Try it
Check the elements. Why can’t the static resources be found? Is the path wrong? Investigate everything first.
It is also recommended to write the full path:
There are two methods, which should be able to solve the problem. Try it. The premise is to configure the DispatcherServlet request mapping to "/"
1.Add <mvc:default-servlet-handler />
spring-mvc configuration and add <mvc:default-servlet-handler />
It will define an org in the Spring MVC context. springframework.web.servlet.resource.DefaultServletHttpRequestHandler, it will be like an inspector, screening the URL entering the DispatcherServlet. If it is found to be a request for static resources, the request will be transferred to the default Servlet of the Web application server for processing. If not, Requests for static resources are continued to be processed by DispatcherServlet.
2. Use <mvc:resources />
spring-mvc configuration and add <mvc:resources />
The Spring MVC framework itself handles static resources and adds some useful added value functions, allowing Static resources can be placed anywhere and the caching time of static resources on the browser side can be specified. For example: <mvc:resources location="/" mapping="/resources/**"/>Web root path "/" Map to /resources path