Java配置Spring MVC

Maven依賴包【部分包不需要】：

	<dependencies>

		<dependency>
			<groupId>javax.servlet.jsp.jstl</groupId>
			<artifactId>jstl-api</artifactId>
			<version>1.2</version>
			<exclusions>
				<exclusion>
					<groupId>javax.servlet</groupId>
					<artifactId>servlet-api</artifactId>
				</exclusion>
				<exclusion>
					<groupId>javax.servlet.jsp</groupId>
					<artifactId>jsp-api</artifactId>
				</exclusion>
			</exclusions>
		</dependency>

		<dependency>
			<groupId>org.glassfish.web</groupId>
			<artifactId>jstl-impl</artifactId>
			<version>1.2</version>
			<exclusions>
				<exclusion>
					<groupId>javax.servlet</groupId>
					<artifactId>servlet-api</artifactId>
				</exclusion>
				<exclusion>
					<groupId>javax.servlet.jsp</groupId>
					<artifactId>jsp-api</artifactId>
				</exclusion>
				<exclusion>
					<groupId>javax.servlet.jsp.jstl</groupId>
					<artifactId>jstl-api</artifactId>
				</exclusion>
			</exclusions>
		</dependency>

		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.1.0</version>
			<scope>provided</scope>
		</dependency>


		<dependency>
			<groupId>javax.servlet.jsp.jstl</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-beans</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-tx</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-context</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context-support</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aop</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aspects</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>commons-logging</groupId>
			<artifactId>commons-logging</artifactId>
			<version>1.1</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.12</version>
		</dependency>
	</dependencies>

Spring MVC配置文件：

package com.project.springDemo.javaConfig;
/**
 * 配置Spring MVC
 */
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;

@SuppressWarnings("deprecation")
//javaCofig配置
@Configuration
//啓動Spring MVC
@EnableWebMvc
//啓動組件掃描
@ComponentScan(value = "com.project.springDemo.action")
public class WebConfig extends WebMvcConfigurerAdapter {
	/**
	 * 配置JSP視圖解析器
	 * @return視圖解析器
	 */
	@Bean
	public ViewResolver viewResolver() {
		InternalResourceViewResolver resolver = new InternalResourceViewResolver();
		resolver.setPrefix("/WEB-INF/views/");
		resolver.setSuffix(".jsp");
		resolver.setExposeContextBeansAsAttributes(true);
		return resolver;
	}
	/**
	 * 配置靜態資源處理器
	 */
	@Override
	public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
		configurer.enable();
	}
}

根配置文件：

package com.project.springDemo.javaConfig;

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 = ("com.project.springDemo.javaConfig"), excludeFilters = {
		@Filter(type = FilterType.ANNOTATION, value = EnableWebMvc.class) })
public class RootConfig {

}

加載配置類：

package com.project.springDemo.javaConfig;

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

public class SpittrWebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
	/**
	 * 根配置定義
	 */
	@Override
	protected Class<?>[] getRootConfigClasses() {
		return new Class<?>[] {RootConfig.class};
	}
	/**
	 *引入Spring MVC的配置文件
	 */
	@Override
	protected Class<?>[] getServletConfigClasses() {
		return new Class<?>[] {WebConfig.class};
	}
	/**
	 * 設置DispatcherServlet的映射路徑
	 */
	@Override
	protected String[] getServletMappings() {
		return new String[] {"/"};
	}

}

前提：只能部署到支持Servlet3.0的Servlet容器才能獲取

原理：任何AbstractAnnotationConfigDispatcherServletInitializer的任意類都會自動配置DispatcherServlet和Spring上下文。