SpringMvc自定义拦截器（注解）代码实例

拦截器

自定义拦截器实现handlerinterceptor接口的三个方法。

public class myinterceptor implements handlerinterceptor{
  @override
  public boolean prehandle(httpservletrequest request, httpservletresponse response, object handler) throws exception {
    //拦截内容
    
    //放行
    return true;
  }

  @override
  public void posthandle(httpservletrequest request, httpservletresponse response, object handler, modelandview modelandview) throws exception {
    //请求来时执行
  }

  @override
  public void aftercompletion(httpservletrequest request, httpservletresponse response, object handler, exception ex) throws exception {
    //响应来时执行
  }
}

springmvc配置文件

//将拦截器放入mvc容器中
  @bean
  public myinterceptor myinterceptor(){
    return new myinterceptor();
  }
//添加拦截器，并配置拦截路径
  @override
  public void addinterceptors(interceptorregistry registry) {
    //配置拦截器
    registry.addinterceptor(myinterceptor()).addpathpatterns("/**");
  }

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