关于spring：没有找到带有基于java配置的URI的HTTP请求的映射

No mapping found for HTTP request with URI with java based configuration

本问题已经有最佳答案，请猛点这里访问。

在学习 spring 时，我试图运行 Spring in Action 的代码示例
但它在 tomcat 日志中向我显示了以下提到的错误：

1	11-Aug-2016 12:15:57.561 WARNING [http-nio-8080-exec-1] org.springframework.web.servlet.PageNotFound.noHandlerFound No mapping found for HTTP request with URI [/RestTester-0.0.1-SNAPSHOT/] in DispatcherServlet with name 'dispatcher'

我正在尝试仅借助基于 java 的配置来配置 spring。
下面提到了相同的代码：

TestProjectInitializer.java

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package test.config;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

public class TestProjectInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

@Override
protected Class< ? >[] getRootConfigClasses() {
// TODO Auto-generated method stub
return new Class< ? >[]{RootConfig.class};
}

@Override
protected Class< ? >[] getServletConfigClasses() {
// TODO Auto-generated method stub
return new Class< ? >[]{WebConfig.class};
}

@Override
protected String[] getServletMappings() {
// TODO Auto-generated method stub
return new String[]{"/"};
}
}

WebConfig.java

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package test.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

@Configuration
@EnableWebMvc
@ComponentScan("test.webconf")
public class WebConfig extends WebMvcConfigurerAdapter{

@Bean
public ViewResolver getViewResolver()
{
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".html");
resolver.setExposeContextBeansAsAttributes(true);
return resolver;
}

@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer)
{
configurer.enable();
}
}

RootConfig.java

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package test.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.ComponentScan.Filter;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;

@Configuration
@ComponentScan(basePackages={"test"}, excludeFilters={@Filter(type=FilterType.ANNOTATION,value=EnableWebMvc.class)})
public class RootConfig {

}

HomeController.java

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package test.controllers;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
/*@RequestMapping("/")*/
public class HomeController
{
@RequestMapping(value="/",method=RequestMethod.GET)
public String home()
{
return "home";
}

}

pom.xml

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<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>test</groupId>
RestTester</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>

<dependencies>
<dependency>
<groupId>org.springframework</groupId>
spring-context</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
spring-webmvc</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
spring-web</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>

<dependency>
<groupId>javax.servlet</groupId>
javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
</dependencies>

<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
maven-war-plugin</artifactId>
<version>2.6</version>
<configuration>
<warSourceDirectory>WebContent</warSourceDirectory>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
</project>

web.xml

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<?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" id="WebApp_ID" version="3.0">
<display-name>test</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>

</web-app>

目录结构

请帮助我理解我做错了什么。