spring boot添加http请求拦截器

5 回答

• 122

  因为你希望尽可能依赖Spring的自动配置 . 要添加其他自定义配置（如拦截器），只需提供 WebMvcConfigurerAdapter 的配置或bean .

  这是一个配置类的示例：

  @Configuration
  public class WebMvcConfig extends WebMvcConfigurerAdapter {
  
    @Autowired 
    HandlerInterceptor yourInjectedInterceptor;
  
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
      registry.addInterceptor(...)
      ...
      registry.addInterceptor(getYourInterceptor()); 
      registry.addInterceptor(yourInjectedInterceptor);
      // next two should be avoid -- tightly coupled and not very testable
      registry.addInterceptor(new YourInterceptor());
      registry.addInterceptor(new HandlerInterceptor() {
          ...
      });
    }
  }
  

  NOTE 如果要保留Spring Boots auto configuration for mvc，请不要使用@EnableWebMvc注释 .

  回复于 2024-04-27T06:57:18+08:00
• 22

  WebMvcConfigurerAdapter 将在Spring 5中弃用 . 来自Javadoc：

  @deprecated从5.0开始{@link WebMvcConfigurer}具有默认方法（由Java 8基线实现）并且可以直接实现而无需此适配器

  如上所述，您应该做的是实现 WebMvcConfigurer 并覆盖 addInterceptors 方法 .

  @Configuration
  public class WebMvcConfig implements WebMvcConfigurer {
  
      @Override
      public void addInterceptors(InterceptorRegistry registry) {
          registry.addInterceptor(new MyCustomInterceptor());
      }
  }
  

  回复于 2024-04-27T06:57:18+08:00
• 6

  要将拦截器添加到Spring引导应用程序，请执行以下操作

  • 创建一个拦截器类

  public class MyCustomInterceptor implements HandlerInterceptor{
  
      //unimplemented methods comes here. Define the following method so that it     
      //will handle the request before it is passed to the controller.
  
      @Override
      public boolean preHandle(HttpServletRequest request,HttpServletResponse  response){
      //your custom logic here.
          return true;
      }
  }
  

  • 定义配置类

  @Configuration
  public class MyConfig extends WebMvcConfigurerAdapter{
      @Override
      public void addInterceptors(InterceptorRegistry registry){
          registry.addInterceptor(new MyCustomInterceptor()).addPathPatterns("/**");
      }
  }
  

  • 多数民众赞成吧 . 现在，您的所有请求都将通过MyCustomInterceptor的preHandle（）方法中定义的逻辑 .

  回复于 2024-04-27T06:57:18+08:00
• 51

  我有同样的问题WebMvcConfigurerAdapter被弃用 . 当我搜索示例时，我几乎找不到任何实现的代码 . 这是一段工作代码 .

  创建一个扩展HandlerInterceptorAdapter的类

  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.stereotype.Component;
  import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
  
  import me.rajnarayanan.datatest.DataTestApplication;
  @Component
  public class EmployeeInterceptor extends HandlerInterceptorAdapter {
      private static final Logger logger = LoggerFactory.getLogger(DataTestApplication.class);
      @Override
      public boolean preHandle(HttpServletRequest request, 
              HttpServletResponse response, Object handler) throws Exception {
  
              String x = request.getMethod();
              logger.info(x + "intercepted");
          return true;
      }
  
  }
  

  然后实现WebMvcConfigurer接口

  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.context.annotation.Configuration;
  import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
  import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
  
  import me.rajnarayanan.datatest.interceptor.EmployeeInterceptor;
  @Configuration
  public class WebMvcConfig implements WebMvcConfigurer {
      @Autowired
      EmployeeInterceptor employeeInterceptor ;
  
      @Override
      public void addInterceptors(InterceptorRegistry registry){
          registry.addInterceptor(employeeInterceptor).addPathPatterns("/employee");
      }
  }
  

  回复于 2024-04-27T06:57:18+08:00
• 6

  您也可以考虑使用开源SpringSandwich库，它允许您直接在控制器中注释要应用哪些拦截器，就像您为url路由注释一样 .

  这样，SpringSandwich的方法和类注释很容易在重构中存活，并且清楚地说明了应用于何处 . （披露：我是作者） .

  http://springsandwich.com/

  回复于 2024-04-27T06:57:18+08:00