springMVC入门

//定义Controller
// 使用@Controller定义bean
@Controller
public class UserController {
//    设置当前操作的访问路径
    @RequestMapping("/save")
//        设置当前操作的返回值类型
    @ResponseBody
    public String save(){
        System.out.println("user save...");
        return "{'module':'springMVC'}";
    }
}

//创建SpringMVC的配置文件，加载controller对应的bean
@Configuration
@ComponentScan("dang.controller")
public class SpringMVCConfig {
}

//定义一个servlet容器启动的配置类，加载Spring的配置
public class ServletContainerConfig extends AbstractDispatcherServletInitializer {
//    加载SpringMVC容器配置
    @Override
    protected WebApplicationContext createServletApplicationContext() {
        AnnotationConfigWebApplicationContext ctx=new AnnotationConfigWebApplicationContext();
       ctx.register(SpringMVCConfig.class);
       return ctx;
    }
//设置那些请求归属springMVC容器处理
    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }
//加载spring配置
    @Override
    protected WebApplicationContext createRootApplicationContext() {
        return null;
    }
}