通过注解方式初始化Spring MVC

约定不等于承诺〃 2022-05-18 02:05 110阅读 0赞

【一】创建MyWebApp并继承AbstractAnnotationConfigDispatcherServletInitializer

package com.config;
    import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
    public class MyWebApp extends AbstractAnnotationConfigDispatcherServletInitializer {
    	// spring ioc容器配置
    	@Override
    	protected Class<?>[] getRootConfigClasses() {
    		// 返回java配置文件数组
    		return new Class<?>[] {};
    	}
    	// DispatcherServlet的URI映射关系配置
    	@Override
    	protected Class<?>[] getServletConfigClasses() {
    		// TODO Auto-generated method stub
    		return new Class<?>[] {webconfig.class};
    	}
    	// DispatcherServlet拦截内容
    	@Override
    	protected String[] getServletMappings() {
    		return new String [] {"/"};
    	}
    
    }

【二】创建webconfig.class

package com.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.EnableWebMvc;
    import org.springframework.web.servlet.view.InternalResourceViewResolver;
    @Configuration
    @ComponentScan("com.*")		//定义扫描的包
    @EnableWebMvc				//启用spring web mvc
    public class webconfig {
    	/***
    	 * 创建视图解析器
    	 * @return 视图解析器
    	 */
    	@Bean(name="viewResolver")
    	public ViewResolver initViewResolver() {
    		InternalResourceViewResolver viewResolver =new InternalResourceViewResolver();
    		viewResolver.setPrefix("");
    		viewResolver.setSuffix(".jsp");
    		return viewResolver;
    	}
    }

【三】创建Hello.controller

package com.controller;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    @Controller
    public class Hello {
    	@RequestMapping("/index")
    	public String show() {
    		return "index";
    	}
    }

【四】启动Tomcat测试URI

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[70]: /images/20220518/abf7886e8e2b4efcbce46651bd03db27.png