Spring MVC/Maven 中的注释不起作用

Question

我在尝试访问本地主机 uri http://localhost:8080/spring/olaMundoSpring 时遇到了这个问题，它在浏览器中返回：

STATUS 404 请求的资源不可用。

还有：

在名称为“Spring MVC Dispatcher Servlet”的 >DispatcherServlet 中找不到具有 URI [/spring/olaMundoSpring] 的 HTTP 请求的映射。

spring-context.xml 好像没问题：

2016 年 5 月 5 日下午 9:45:24 >org.springframework.beans.factory.xml.XmlBeanDefinitionReader >loadBeanDefinitions INFORMAÇÕES：从 ServletContext 资源加载 XML bean 定义 [/WEB->INF/spring-context.xml]

控制器：

package br.com.jayybe.spring;

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

@Controller
public class Controle {

  @RequestMapping("/olaMundoSpring")
  public String execute() {
      System.out.println("Executando a lógica com Spring MVC");
      return "ok";
  }
}

web.xml：

<web-app>
  <display-name>Archetype Created Web Application</display-name>

<servlet>
      <servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
      <servlet-class>
          org.springframework.web.servlet.DispatcherServlet
      </servlet-class>
      <init-param>
          <param-name>contextConfigLocation</param-name>
          <param-value>
             WEB-INF/spring-context.xml
          </param-value>
      </init-param>
      <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
      <servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
      <url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>

spring-context.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/mvc 
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
    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">

  <context:component-scan base-package="br.com.jayybe.spring" />
  <mvc:annotation-driven />

  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/views/"/>
    <property name="suffix" value=".jsp"/>
  </bean>

</beans>

pom.xml：

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.jayybe</groupId>
  <artifactId>spring</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>spring Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>javax</groupId>
        <artifactId>javaee-web-api</artifactId>
        <version>7.0</version>
    </dependency>
    <dependency>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-context</artifactId>
                    <version>4.2.4.RELEASE</version>
              </dependency>

              <dependency>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-webmvc</artifactId>
                    <version>4.2.4.RELEASE</version>
              </dependency>
              <!-- Servlet -->
              <dependency>
                    <groupId>javax.servlet</groupId>
                    <artifactId>javax.servlet-api</artifactId>
                    <version>3.1.0</version>
              </dependency>
              <dependency>
                    <groupId>javax.servlet.jsp</groupId>
                    <artifactId>jsp-api</artifactId>
                    <version>2.1</version>
                    <scope>provided</scope>
              </dependency>
              <dependency>
                    <groupId>javax.servlet</groupId>
                    <artifactId>jstl</artifactId>
                    <version>1.2</version>
              </dependency>
  </dependencies>
  <build>
    <finalName>spring</finalName>
  </build>
</project>

Answer 1

尝试像这样更改您的注释：

@RequestMapping(value = "/olaMundoSpring", method = RequestMethod.GET)

更改您的组件扫描：

<context:component-scan base-package="br.*" />

并且不要为 servlet 映射使用带有空格的名称