http://localhost:8080/o2o/superadmin/listarea 404

Question

警告: No mapping found for HTTP request with URI [/o2o/superadmin/listarea] in DispatcherServlet with name ‘spring-dispatcher’

Answer 1

翔仔 2018-10-17 22:35:53

同学好，你贴的是一个警告信息，并非错误，应该是哪里配置出问题了，主要对比下spring-web.xml,web.xml以及对应controller的配置

spring-web.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="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
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
	<!-- 配置SpringMVC -->
	<!-- 1.开启SpringMVC注解模式 -->
	<mvc:annotation-driven />

	<!-- 2.静态资源默认servlet配置 (1)加入对静态资源的处理：js,gif,png (2)允许使用"/"做整体映射 -->
	<mvc:resources mapping="/resources/**" location="/resources/" />
	<mvc:default-servlet-handler />

	<!-- 3.定义视图解析器 -->
	<bean id="viewResolver"
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/html/"></property>
		<property name="suffix" value=".html"></property>
	</bean>
	<!-- 文件上传解析器 -->
	<bean id="multipartResolver"
		class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
		<property name="defaultEncoding" value="utf-8"></property>
		<!-- 1024 * 1024 * 20 = 20M -->
		<property name="maxUploadSize" value="20971520"></property>
		<property name="maxInMemorySize" value="20971520"></property>
	</bean>

	<!-- 4.扫描web相关的bean -->
	<context:component-scan base-package="com.imooc.o2o.web" />
</beans>

这部分看看base-package有没有设置对

web.xml

<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" metadata-complete="true">
	<display-name>Archetype Created Web Application</display-name>
	<welcome-file-list>
		<welcome-file>aaa.jsp</welcome-file>
		<welcome-file>index.jsp</welcome-file>
	</welcome-file-list>
	<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>classpath:spring/spring-*.xml</param-value>
		</init-param>
	</servlet>
	<servlet-mapping>
		<servlet-name>spring-dispatcher</servlet-name>
		<!-- 默认匹配所有的请求 -->
		<url-pattern>/</url-pattern>
	</servlet-mapping>
</web-app>

对应controller的路径还有对应的标签比如@RequestMapping @ResponseBody @Controller之类的记得加上