Dropwizard 为所有资源添加响应过滤器

Dropwizard Add Response Filter for All Resources

如何向我的 Dropwizard 应用程序添加一个过滤器来验证每个资源返回的响应?

我应该使用 javax.servlet.Filter 还是 javax.ws.rs.container.ContainerResponseFilter

任何与其用途相关的示例都将不胜感激。

我想你想用的是javax.servlet.Filter

A filter is an object that performs filtering tasks on either the request to a resource (a servlet or static content), or on the response from a resource, or both.

更多信息here

要使用 为所有资源添加响应过滤器,您可以执行以下操作:

  1. 创建一个扩展 javax.servlet.Filter -

    的 CustomFilter
    public class CustomFilter implements Filter {
    
        public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
            // your filtering task
            chain.doFilter(req, res);
        }
    
        public void init(FilterConfig filterConfig) {
        }
    
        public void destroy() {
        }
    }
    
  2. 然后将相同的内容注册到扩展 Application -

    Service
    public class CustomService extends Application<CustomConfig> { //CustomConfig extend 'io.dropwizard.Configuration'
    
      public static void main(String[] args) throws Exception {
        new CustomService().run(args);
      }
    
      @Override
      public void initialize(Bootstrap<CustomConfig> someConfigBootstrap) {
        // do some initialization
      }
    
      @Override
      public void run(CustomConfig config, io.dropwizard.setup.Environment environment) throws Exception {
        ... // resource registration
        environment.servlets().addFilter("Custom-Filter", CustomFilter.class)
            .addMappingForUrlPatterns(java.util.EnumSet.allOf(javax.servlet.DispatcherType.class), true, "/*");
      }
    }
    
  3. 您现在应该可以使用上面定义的 CustomFilter 过滤所有资源。