SpringMVC整体源码结构总结

1. servlet 3.0 淶

ϵһʼȽ servlet3.0 淶ͨù淶ʵ web Ŀ 0xml .

• servlet3.0 淶Уservlet ͨ SPI ṩһӿڣServletContainerInitializer
• spring ʵ˸ýӿڣʵ SpringServletContainerInitializer onStartup(...) Уִʵ WebApplicationInitializer ӿڵ onStartup(...) ֻҪʵ WebApplicationInitializer ӿڼɣ
• ʵ WebApplicationInitializer ӿڵУ onStartup(...) servlet ֶעһ servletDispatcherServlet servlet л spring

̾

2. webMvc ķʽ

Ƿ webMvc ַʽ

1. @EnableWebMvc

ַʽܼ򵥣ֻҪ

// ʹ@EnableWebMvcעmvc
@Component
@EnableWebMvc
public class MvcConfig {
    ...
}

Ҫ webMvc һЩʱҪʵ WebMvcConfigurer:

// ʵ WebMvcConfigurerԶ
@Component
public class MyWebMvcConfigurer implements WebMvcConfigurer {

    // дWebMvcConfigurerԶ
}

2. ʵ WebMvcConfigurationSupport

һַʽ webMvc ʽʵ WebMvcConfigurationSupport

@Component
public class MyWebMvcConfigurationSupport extends WebMvcConfigurationSupport {
    // д÷Զ
    ...

   /**
    * 磬ӿãֱд addCorsMappings 
    */
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        // Լ
        ...
    }

}

ҪעǣʹַʽҪԶʱͲȥʵ WebMvcConfigurer ӿˣӦֱд WebMvcConfigurationSupport еӦд addCorsMappings().

3.

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4.

Ҳһͼ̣ܽ

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