SSM报错：No mapping found for HTTP request with URI [/smbms/js/echarts.js] in DispatcherServlet with na
在jsp引用ECharts的js包：
启动Tomcat，在地址栏输入URL：http://localhost:8080/smbms/user/linechart.html
结果页面空白，报错日志部分信息：
[DEBUG] 2017-11-11 09:32:33,160 org.springframework.web.servlet.DispatcherServlet - DispatcherServlet with name 'springmvc' processing GET request for [/smbms/js/echarts.js]
[DEBUG] 2017-11-11 09:32:33,160 org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Looking up handler method for path /js/echarts.js
[DEBUG] 2017-11-11 09:32:33,161 org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Did not find handler method for [/js/echarts.js]
[WARN] 2017-11-11 09:32:33,162 org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/smbms/js/echarts.js] in DispatcherServlet with name 'springmvc'
[DEBUG] 2017-11-11 09:32:33,162 org.springframework.web.servlet.DispatcherServlet - Successfully completed request
首先看一下我的web.xml配置：
可以看到，报错信息“No mapping found for HTTP request with URI [/smbms/js/echarts.js] in DispatcherServlet with name 'springmvc'”提示了说，springmvc找不到匹配HTTP请求的URI，即[/smbms/js/echarts.js进入了mvc，但是springmvc没有找到与之匹配的处理方法，因此出错。
解决办法1：
在web.xml配置文件：
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
后面加上如下代码：
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.css</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.gif</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.jpg</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.js</url-pattern>
</servlet-mapping>
重新启动tomcat服务器，运行输入
报错日志信息如下：
[DEBUG] 2017-11-11 10:21:00,640 org.springframework.web.servlet.DispatcherServlet - DispatcherServlet with name 'springmvc' processing GET request for [/smbms/user/linechart.html]
[DEBUG] 2017-11-11 10:21:00,640 org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Looking up handler method for path /user/linechart.html
[DEBUG] 2017-11-11 10:21:00,640 org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Returning handler method [public java.lang.String cn.smbms.controller.UserController.linechart()]
[DEBUG] 2017-11-11 10:21:00,640 org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'userController'
[DEBUG] 2017-11-11 10:21:00,640 org.springframework.web.servlet.DispatcherServlet - Last-Modified value for [/smbms/user/linechart.html] is: -1
[DEBUG] 2017-11-11 10:21:00,641 cn.smbms.controller.UserController - UserController welcome 展示折线图linechart=======================
[DEBUG] 2017-11-11 10:21:00,642 org.springframework.web.servlet.view.ContentNegotiatingViewResolver - Requested media types are [text/html;charset=UTF-8] based on Accept header types and producible media types [*/*])
[DEBUG] 2017-11-11 10:21:00,642 org.springframework.beans.factory.support.DefaultListableBeanFactory - Invoking afterPropertiesSet() on bean with name 'echarts/linechart'
[DEBUG] 2017-11-11 10:21:00,642 org.springframework.beans.factory.support.DefaultListableBeanFactory - Invoking afterPropertiesSet() on bean with name 'echarts/linechart.html'
[DEBUG] 2017-11-11 10:21:00,642 org.springframework.web.servlet.view.ContentNegotiatingViewResolver - Returning [org.springframework.web.servlet.view.JstlView: name 'echarts/linechart'; URL [/WEB-INF/jsp/echarts/linechart.jsp]] based on requested media type
'text/html;charset=UTF-8'
[DEBUG] 2017-11-11 10:21:00,642 org.springframework.web.servlet.DispatcherServlet - Rendering view [org.springframework.web.servlet.view.JstlView: name 'echarts/linechart'; URL [/WEB-INF/jsp/echarts/linechart.jsp]] in DispatcherServlet with name 'springmvc'
[DEBUG] 2017-11-11 10:21:00,642 org.springframework.web.servlet.view.JstlView - Forwarding to resource [/WEB-INF/jsp/echarts/linechart.jsp] in InternalResourceView 'echarts/linechart'
[DEBUG] 2017-11-11 10:21:00,647 org.springframework.web.servlet.DispatcherServlet - Successfully completed request
这说明js文件正常引用了。