[英]Jersey Filters, Intercepter and MessageBodyReader using Dropwizard
我正在一个 dropwizard 项目中探索球衣过滤器。 尝试探索如何在每个端点的公共位置拦截传入请求以对请求对象(即路径参数、查询参数或请求正文)执行一些基本检查我正在尝试以下接口
我能够实现 Filter 和 ContainerRequest Filter 并查看这些实现中的代码得到执行。 但是我的 ReaderInterceptor 和 MessageBodyReader 没有被执行。
这是我的代码
人员资源.java
@Path("person")
@Api("Person Resource")
@Log
@MyAnnotation
public class PersonResource {
@GET
@Path("{id}")
@Produces(MediaType.APPLICATION_JSON)
public Person getPerson(@PathParam("id") String id){
log.info("Requesting Person information...");
return new Person(id,"Person Name");
}
}
过滤器实现
package com.practice.rigz.interceptor;
import lombok.extern.java.Log;
import javax.servlet.*;
import javax.ws.rs.ext.Provider;
import java.io.IOException;
@Provider
@Log
public class RequestFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
log.info("INIT...");
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
filterChain.doFilter(servletRequest,servletResponse);
log.info("DO FILTER...");
}
@Override
public void destroy() {
log.info("DESTROY...");
}
}
ContainerRequestFilter 实现
package com.practice.rigz.interceptor;
import com.practice.rigz.annotations.MyAnnotation;
import lombok.extern.java.Log;
import javax.ws.rs.container.*;
import javax.ws.rs.ext.Provider;
import java.io.IOException;
import java.util.List;
@Provider
@Log
@MyAnnotation
public class RequestContainerRequestFilter implements ContainerRequestFilter {
@Override
public void filter(ContainerRequestContext requestContext) throws IOException {
log.info(String.join("," ,requestContext.getPropertyNames()));
List<String> partnerId = requestContext.getUriInfo().getPathParameters().get("id");
if (partnerId.get(0).equals("1")){
throw new IllegalAccessError();
}
log.info("CONTAINER REQUEST FILTER...");
}
}
阅读器拦截器实现
package com.practice.rigz.interceptor;
import com.practice.rigz.annotations.MyAnnotation;
import lombok.extern.java.Log;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.ext.Provider;
import javax.ws.rs.ext.ReaderInterceptor;
import javax.ws.rs.ext.ReaderInterceptorContext;
import java.io.IOException;
@Log
@MyAnnotation
@Provider
public class RequestReaderInterceptor implements ReaderInterceptor {
@Override
public Object aroundReadFrom(ReaderInterceptorContext readerInterceptorContext) throws IOException, WebApplicationException {
log.info("INTERCEPTOR");
return readerInterceptorContext.proceed();
}
}
MessageBodyReader 实现
package com.practice.rigz.interceptor;
import com.practice.rigz.annotations.MyAnnotation;
import lombok.extern.java.Log;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.Provider;
import java.io.IOException;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
@Provider
@Log
@MyAnnotation
public class RequestMessageBodyReader implements MessageBodyReader {
@Override
public boolean isReadable(Class aClass, Type type, Annotation[] annotations, MediaType mediaType) {
log.info("IS READABLE...");
return false;
}
@Override
public Object readFrom(Class aClass, Type type, Annotation[] annotations, MediaType mediaType, MultivaluedMap multivaluedMap, InputStream inputStream) throws IOException, WebApplicationException {
log.info("READ FROM ...");
return null;
}
}
在我的 Dropwizard 应用程序运行方法中,我正在注册所有组件,如下所示
private void registerFilters(Environment environment) {
environment.servlets().addFilter("request-filter", RequestFilter.class)
.addMappingForUrlPatterns(java.util.EnumSet.allOf(javax.servlet.DispatcherType.class), true, "/*");
environment.jersey().register(RequestMessageBodyReader.class);
environment.jersey().register(RequestReaderInterceptor.class);
environment.jersey().register(RequestContainerRequestFilter.class);
}
知道为什么我的 MessageBodyReader 和 ReaderInterceptor 不起作用吗? 我正在使用 OpenJDK11 和 Dropwizard 1.3.16
以下是尝试击中端点时我的程序的输出
INFO [2019-11-23 16:29:07,016] com.practice.rigz.interceptor.RequestContainerRequestFilter: org.glassfish.jersey.message.internal.TracingLogger INFO [2019-11-23 16:29:07,019] com.practice .rigz.interceptor.RequestContainerRequestFilter: CONTAINER REQUEST FILTER... INFO [2019-11-23 16:29:07,045] com.practice.rigz.resources.PersonResource: 请求个人信息... INFO [2019-11-23 16] :29:07,119] com.practice.rigz.interceptor.RequestFilter: DO FILTER... 0:0:0:0:0:0:0:1 - - [23/Nov/2019:16:29:07 + 0000] "GET /person/1111 HTTP/1.1" 200 34 " http://localhost:8080/swagger " "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/605.1.15 (KHTML, like Gecko) 版本/13.0.3 Safari/605.1.15" 242
我找到了问题的原因。 我在这里需要的东西很少
package com.practice.rigz.interceptor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.jaxrs.json.JacksonJaxbJsonProvider;
import com.practice.rigz.annotations.MyAnnotation;
import com.practice.rigz.model.Person;
import lombok.extern.java.Log;
import org.hibernate.validator.internal.util.privilegedactions.NewJaxbContext;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Link;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.Provider;
import java.io.IOException;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
@Provider
@Log
@MyAnnotation
public class RequestMessageBodyReader implements MessageBodyReader<Person> {
@Override
public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
log.info("IS READABLE...");
return type == Person.class;
}
@Override
public Person readFrom(Class<Person> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, String> httpHeaders, InputStream entityStream) throws IOException, WebApplicationException {
ObjectMapper mapper = new ObjectMapper();
Person person = mapper.readValue(entityStream, Person.class);
log.info("READ FROM...");
return person;
}
}
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