java 找不到Spring MVC请求映射404页面未找到
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/25266560/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Spring MVC request mapping not found 404 page not found
提问by Junaid Akhtar
I am developing sample Spring MVC application i want to return JSON string by requesting to spring mvc controller but when i make request via url it shows me 404 error i am following tutorial from very famous website ,My URL to which i make request IS localhost:8080/SpringAngularProject/rest/kfc/brands/kfc1here is my code below :
我正在开发示例 Spring MVC 应用程序，我想通过向 spring mvc 控制器请求返回 JSON 字符串，但是当我通过 url 发出请求时，它显示 404 错误，我正在学习来自非常著名网站的教程，我向其发出请求的 URL 是本地主机： 8080/SpringAngularProject/rest/kfc/brands/kfc1这里是我的代码如下：
0-- Console Picture :
Aug 12, 2014 7:31:19 PM org.springframework.web.servlet.DispatcherServlet noHandlerFound
WARNING: No mapping found for HTTP request with URI [/SpringAngularProject/rest/kfc/brands/sdsd] in DispatcherServlet with name 'mvc-dispatcher'
1- Its my Controller Class
1-它是我的控制器类
package com.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
@RequestMapping("/kfc/brands")
public class HelloWorldController {
@RequestMapping(value = "{name}", method = RequestMethod.GET)
public @ResponseBody Shop getShopInJSON(@PathVariable String name) {
Shop shop = new Shop();
shop.setName(name);
shop.setStaffName(new String[] { "staff1", "staff2" });
return shop;
}
}
2-- My web.xml file
2-- 我的 web.xml 文件
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
<display-name>AngularSpring</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>mvc-dispatcher</servlet-name>
<servlet-class> org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>mvc-dispatcher</servlet-name>
<url-pattern>/rest</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/mvc-dispatcher-servlet.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener </listener-class>
</listener>
</web-app>
3-- My Spring cfg file :
3-- 我的 Spring cfg 文件：
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<context:component-scan base-package="com.controller.HelloWorldController" />
<mvc:annotation-driven />
</beans>
4-- My pom.xml file for maven
4-- 我的 maven pom.xml 文件
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>SpringAngularProject</groupId>
<artifactId>SpringAngularProject</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
<configuration>
<warSourceDirectory>WebContent</warSourceDirectory>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<spring.version>3.2.2.RELEASE</spring.version>
<Hymanson.version>1.9.10</Hymanson.version>
<jdk.version>1.7</jdk.version>
</properties>
<dependencies>
<!-- Spring 3 dependencies -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.codehaus.Hymanson</groupId>
<artifactId>Hymanson-mapper-asl</artifactId>
<version>1.9.12</version>
</dependency>
</dependencies>
</project>
回答by Junaid Akhtar
Finaly i got my answer myself it was just instead of <context:component-scan base-package="com.controller.HelloWorldController" />i changed to <context:component-scan base-package="com.controller" />we just have to give path till Base package as name suggest
最后我自己得到了答案，而不是 <context:component-scan base-package="com.controller.HelloWorldController" />我改为<context:component-scan base-package="com.controller" />我们只需要提供路径，直到 Base 包如名称所示
