web.xml

<!-- The definition of the Root Spring Container shared by all Servlets and Filters -->

    <context-param>

        <param-name>contextConfigLocation</param-name>

        <param-value>/WEB-INF/spring/root-context.xml</param-value>

    </context-param>

    <!-- Creates the Spring Container shared by all Servlets and Filters -->

    <listener>

        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

    </listener>

    <!-- Processes application requests -->

    <servlet>

        <servlet-name>appServlet</servlet-name>

        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

        <init-param>

            <param-name>contextConfigLocation</param-name>

            <param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>

        </init-param>

        <load-on-startup></load-on-startup>

    </servlet>

    <servlet-mapping>

        <servlet-name>appServlet</servlet-name>

        <url-pattern>/</url-pattern>

    </servlet-mapping>

package com.mvc.config;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.context.annotation.Configuration;

@Configuration //标识是配置文件

@ComponentScan("com.mvc.server") //指定自动扫描的包

public class RootConfig {

    //在这里可以配置任何的bean，是基于Spring容器的

}

package com.mvc.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 //表示这个类是SpringMVC的配置文件

@ComponentScan("com.mvc.action")//注意扫描的包

public class WebConfig  extends WebMvcConfigurerAdapter{

    @Bean

    public ViewResolver viewResolver(){
　　　　 //配置视图解析器

        InternalResourceViewResolver resolver = new InternalResourceViewResolver();

        resolver.setPrefix("/WEB-INF/views/");

        resolver.setSuffix(".jsp");

        resolver.setExposeContextBeansAsAttributes(true);

        return resolver;

    }

    @Override

    public void configureDefaultServletHandling(
　　　　　　

            DefaultServletHandlerConfigurer configurer){
        //配置静态资源的处理

        configurer.enable();

    }

}

package com.mvc.config;

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

public class MyDispatcherServlet

    extends AbstractAnnotationConfigDispatcherServletInitializer{

    @Override

    protected Class<?>[] getRootConfigClasses() {

        return new Class<?>[]{RootConfig.class};//加载Spring的配置类

    }

    @Override

    protected Class<?>[] getServletConfigClasses() {

        return new Class<?>[]{WebConfig.class};加载SpringMVC的配置类

    }

    @Override

    protected String[] getServletMappings() {

        return new String[]{"/"}; //映射路径

    }

}

package com.mvc.action;

import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

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

import com.mvc.server.PersonServer;

@Controller

public class MyController {

    @Autowired

    private PersonServer p;

    public MyController(){

        System.out.println("MyController...");

    }

    @RequestMapping("test")

    public String test(Map map){

        map.put("p", p.getPerson());

        System.out.println("test...");

        return "home";

    }

}

package com.mvc.server;

import org.springframework.stereotype.Service;

import com.mvc.entity.Person;

@Service

public class PersonServer {

    public PersonServer(){

        System.out.println("PersonServer..");

    }

    public Person getPerson(){

        return new Person("aaa",);

    }

}

package com.mvc.entity;

public class Person {

    public Person(){}

    public Person(String name, Integer age) {

        this.name = name;

        this.age = age;

    }

    private String name;

    private Integer age;

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public Integer getAge() {

        return age;

    }

    public void setAge(Integer age) {

        this.age = age;

    }

    @Override

    public String toString() {

        return "Person [name=" + name + ", age=" + age + "]";

    }

}