管理springmvc组件

概述

在使用springmvc时要配置哪些东西

前端控制器
控制器映射器和适配器
1. 映射器 Map<Set<String>,Object>
  1. Set<String> 存放资源地
    1. @RequestMapper(value={“helle2”,”hello2”})
  2. Object 存放方法对象和方法所有的对象的对象
    1. 执行方法 method.invoke(obj,args) Method
2. 适配器
  1. @Controller
  2. 实现Controller接口
  3. 实现HttpRequestHandler的接口
视图解析器
InternalResourceViewResolver
文件上传的
拦截器

前端控制器的自动管理

找到 WebMvcAutoConfiguration

找到 DispatcherServletAutoConfiguration

创建

控制器的自动管理[就是自定义的controller]

自动扫描

|--默认扫描启动类所有的包及其子包；

如果不在启动类所有的包及其子包下面

要使用 @CompomentScan(basePackage={“com.sxt.controller”,”com.bjsxt.controller”})

视图解析器的自动管理

找到 WebMvcAutoConfiguration

@Bean
@ConditionalOnMissingBean
public InternalResourceViewResolver defaultViewResolver() {
   InternalResourceViewResolver resolver = new InternalResourceViewResolver();
   resolver.setPrefix(this.mvcProperties.getView().getPrefix());
   resolver.setSuffix(this.mvcProperties.getView().getSuffix());
   return resolver;
}

@Bean
@ConditionalOnBean(View.class)
@ConditionalOnMissingBean
public BeanNameViewResolver beanNameViewResolver() {
   BeanNameViewResolver resolver = new BeanNameViewResolver();
   resolver.setOrder(Ordered.LOWEST_PRECEDENCE - 10);
   return resolver;
}

@Bean
@ConditionalOnBean(ViewResolver.class)
@ConditionalOnMissingBean(name = "viewResolver", value = ContentNegotiatingViewResolver.class)
public ContentNegotiatingViewResolver viewResolver(BeanFactory beanFactory) {
   ContentNegotiatingViewResolver resolver = new ContentNegotiatingViewResolver();
   resolver.setContentNegotiationManager(beanFactory.getBean(ContentNegotiationManager.class));
   // ContentNegotiatingViewResolver uses all the other view resolvers to locate
   // a view so it should have a high precedence
   resolver.setOrder(Ordered.HIGHEST_PRECEDENCE);
   return resolver;
}