Spring注解驱动开发实战 | 第二十三篇：springmvc-整合

创建springmvc-annotation项目

pom.xml中添加依赖

<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>com.wsc</groupId>
	<artifactId>springmvc-annotation</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>war</packaging>

	<dependencies>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>4.3.11.RELEASE</version>
		</dependency>

		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>servlet-api</artifactId>
			<version>3.0-alpha-1</version>
			<scope>provided</scope>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-war-plugin</artifactId>
				<version>2.4</version>
				<configuration>
					<failOnMissingWebXml>false</failOnMissingWebXml>
				</configuration>
			</plugin>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.2</version>
				<configuration>
					<source>1.7</source>
					<target>1.7</target>
				</configuration>
			</plugin>

			<plugin>
				<groupId>org.apache.tomcat.maven</groupId>
				<artifactId>tomcat7-maven-plugin</artifactId>
				<version>2.2</version>
				<configuration>
					<port>8080</port>
					<charset>UTF-8</charset>
					<server>tomcat7</server>
				</configuration>
			</plugin>
		</plugins>
	</build>

</project>
           

创建com.wsc.service，在该包下创建HelloService

package com.wsc.service;

import org.springframework.stereotype.Service;

@Service
public class HelloService {
	
	public String sayHello(String name){
		
		return "Hello "+name;
	}

}
           

创建com.wsc.controller,在该包下创建HelloController

package com.wsc.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.wsc.service.HelloService;

@Controller
public class HelloController {
	
	@Autowired
	HelloService helloService;
	
	
	@ResponseBody
	@RequestMapping("/hello")
	public String hello(){
		String hello = helloService.sayHello("tomcat..");
		return hello;
	}
}
           

创建com.wsc.config包，在该包下创建AppConfig，RootConfig

package com.wsc.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.ComponentScan.Filter;
import org.springframework.context.annotation.FilterType;
import org.springframework.stereotype.Controller;

//Spring的容器不扫描controller;父容器
@ComponentScan(value="com.wsc",excludeFilters={
		@Filter(type=FilterType.ANNOTATION,classes={Controller.class})
})
public class RootConfig {

}
           

package com.wsc.config;


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



//SpringMVC只扫描Controller；子容器
//useDefaultFilters=false 禁用默认的过滤规则；
@ComponentScan(value="com.wsc",includeFilters={
		@Filter(type=FilterType.ANNOTATION,classes={Controller.class})
},useDefaultFilters=false)
@EnableWebMvc
public class AppConfig {


}
           

在com.wsc下创建MyWebAppInitializer

package com.wsc;

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

import com.wsc.config.AppConfig;
import com.wsc.config.RootConfig;

//web容器启动的时候创建对象；调用方法来初始化容器以前前端控制器
public class MyWebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

	//获取根容器的配置类；（Spring的配置文件）   父容器；
	@Override
	protected Class<?>[] getRootConfigClasses() {
		// TODO Auto-generated method stub
		return new Class<?>[]{RootConfig.class};
	}

	//获取web容器的配置类（SpringMVC配置文件）  子容器；
	@Override
	protected Class<?>[] getServletConfigClasses() {
		// TODO Auto-generated method stub
		return new Class<?>[]{AppConfig.class};
	}

	//获取DispatcherServlet的映射信息
	//  /：拦截所有请求（包括静态资源（xx.js,xx.png）），但是不包括*.jsp；
	//  /*：拦截所有请求；连*.jsp页面都拦截；jsp页面是tomcat的jsp引擎解析的；
	@Override
	protected String[] getServletMappings() {
		// TODO Auto-generated method stub
		return new String[]{"/"};
	}

}
           

启动项目：

在Run Configurations 窗口，配置如图：

运行项目，在浏览器中输入：

http://localhost:8080/springmvc-annotation/hello

得到结果：Hello tomcat..

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