Rest 找不到媒体类型=应用程序/x-protobuf的MessageBodyWriter
我想在REST应用程序中使用protobuf。但当我运行应用程序时，它会给我以下错误Rest 找不到媒体类型=应用程序/x-protobuf的MessageBodyWriter,rest,protocol-buffers,Rest,Protocol Buffers,我想在REST应用程序中使用protobuf。但当我运行应用程序时，它会给我以下错误 MessageBodyWriter not found for media type=application/x-protobuf 我已将这些文件放在使用这些文件的同一个包中。我对REST和protobuf都是新手，所以我不知道到底是什么问题。正如许多博客所说，仅仅提到@Provider或@Consumer就足以让jersey抓住定制的MessageBodyWriter。请帮我解决这个问题 我使用它的代码如下
MessageBodyWriter not found for media type=application/x-protobuf
@Provider@ConsumerString response = webTarget.path("auth").request(MediaType.TEXT_PLAIN)
.post(Entity.entity(login, "application/x-protobuf")
,String.class);
SEVERE: Servlet.service() for servlet [login] in context with path [/webapp] threw exception
org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyWriter not found for media type=application/x-protobuf, type=class com.codeputer.lib.ProtoLib.Protos.LoginProto$Login, genericType=class com.codeputer.lib.ProtoLib.Protos.LoginProto$Login.
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:247)
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)
at org.glassfish.jersey.client.ClientRequest.writeEntity(ClientRequest.java:502)
at org.glassfish.jersey.client.internal.HttpUrlConnector._apply(HttpUrlConnector.java:388)
at org.glassfish.jersey.client.internal.HttpUrlConnector.apply(HttpUrlConnector.java:285)
at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:255)
at org.glassfish.jersey.client.JerseyInvocation$2.call(JerseyInvocation.java:700)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:228)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:444)
at org.glassfish.jersey.client.JerseyInvocation.invoke(JerseyInvocation.java:696)
at org.glassfish.jersey.client.JerseyInvocation$Builder.method(JerseyInvocation.java:448)
at org.glassfish.jersey.client.JerseyInvocation$Builder.post(JerseyInvocation.java:349)
at com.codeputer.webapp.Requester.authenticate(Requester.java:41)
at com.codeputer.webapp.login.service(login.java:49)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
@POST
@Produces(MediaType.TEXT_PLAIN)
@Consumes("application/x-protobuf")
public String authentication(Login login) {
return login.getUsername().toUpperCase();
}
String response = webTarget.path("auth").request(MediaType.TEXT_PLAIN)
.post(Entity.entity(login, "application/x-protobuf")
,String.class);
SEVERE: Servlet.service() for servlet [login] in context with path [/webapp] threw exception
org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyWriter not found for media type=application/x-protobuf, type=class com.codeputer.lib.ProtoLib.Protos.LoginProto$Login, genericType=class com.codeputer.lib.ProtoLib.Protos.LoginProto$Login.
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:247)
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)
at org.glassfish.jersey.client.ClientRequest.writeEntity(ClientRequest.java:502)
at org.glassfish.jersey.client.internal.HttpUrlConnector._apply(HttpUrlConnector.java:388)
at org.glassfish.jersey.client.internal.HttpUrlConnector.apply(HttpUrlConnector.java:285)
at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:255)
at org.glassfish.jersey.client.JerseyInvocation$2.call(JerseyInvocation.java:700)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:228)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:444)
at org.glassfish.jersey.client.JerseyInvocation.invoke(JerseyInvocation.java:696)
at org.glassfish.jersey.client.JerseyInvocation$Builder.method(JerseyInvocation.java:448)
at org.glassfish.jersey.client.JerseyInvocation$Builder.post(JerseyInvocation.java:349)
at com.codeputer.webapp.Requester.authenticate(Requester.java:41)
at com.codeputer.webapp.login.service(login.java:49)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
String response = webTarget.path("auth").request(MediaType.TEXT_PLAIN)
.post(Entity.entity(login, "application/x-protobuf")
,String.class);
SEVERE: Servlet.service() for servlet [login] in context with path [/webapp] threw exception
org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyWriter not found for media type=application/x-protobuf, type=class com.codeputer.lib.ProtoLib.Protos.LoginProto$Login, genericType=class com.codeputer.lib.ProtoLib.Protos.LoginProto$Login.
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:247)
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)
at org.glassfish.jersey.client.ClientRequest.writeEntity(ClientRequest.java:502)
at org.glassfish.jersey.client.internal.HttpUrlConnector._apply(HttpUrlConnector.java:388)
at org.glassfish.jersey.client.internal.HttpUrlConnector.apply(HttpUrlConnector.java:285)
at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:255)
at org.glassfish.jersey.client.JerseyInvocation$2.call(JerseyInvocation.java:700)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:228)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:444)
at org.glassfish.jersey.client.JerseyInvocation.invoke(JerseyInvocation.java:696)
at org.glassfish.jersey.client.JerseyInvocation$Builder.method(JerseyInvocation.java:448)
at org.glassfish.jersey.client.JerseyInvocation$Builder.post(JerseyInvocation.java:349)
at com.codeputer.webapp.Requester.authenticate(Requester.java:41)
at com.codeputer.webapp.login.service(login.java:49)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Map;
import java.util.WeakHashMap;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import com.google.protobuf.Message;
@Provider
@Produces("application/x-protobuf")
public class ProtobufMessageBodyWriter implements MessageBodyWriter<Message> {
/**
* a cache to save the cost of duplicated call(getSize, writeTo) to one
* object.
*/
public boolean isWriteable(Class<?> type, Type genericType,
Annotation[] annotations, MediaType mediaType) {
return Message.class.isAssignableFrom(type);
}
private Map<Object, byte[]> buffer = new WeakHashMap<Object, byte[]>();
public long getSize(Message m, Class<?> type, Type genericType,
Annotation[] annotations, MediaType mediaType) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
m.writeTo(baos);
} catch (IOException e) {
return -1;
}
byte[] bytes = baos.toByteArray();
buffer.put(m, bytes);
return bytes.length;
}
public void writeTo(Message m, Class type, Type genericType,
Annotation[] annotations, MediaType mediaType,
MultivaluedMap httpHeaders, OutputStream entityStream)
throws IOException, WebApplicationException {
entityStream.write(buffer.remove(m));
}
}
import java.io.IOException;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import javax.ws.rs.Consumes;
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 com.google.protobuf.GeneratedMessage;
import com.google.protobuf.Message;
@Provider
@Consumes("application/x-protobuf")
public class ProtobufMessageBodyReader implements MessageBodyReader<Message> {
public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return Message.class.isAssignableFrom(type);
}
public Message readFrom(Class<Message> type, Type genericType, Annotation[] annotations,
MediaType mediaType, MultivaluedMap<String, String> httpHeaders,
InputStream entityStream) throws IOException, WebApplicationException {
try {
Method newBuilder = type.getMethod("newBuilder");
GeneratedMessage.Builder builder = (GeneratedMessage.Builder) newBuilder.invoke(type);
return builder.mergeFrom(entityStream).build();
} catch (Exception e) {
throw new WebApplicationException(e);
}
}
}
import java.io.ByteArrayOutputStream；
导入java.io.IOException；
导入java.io.OutputStream；
导入java.lang.annotation.annotation；
导入java.lang.reflect.Type；
导入java.util.Map；
导入java.util.WeakHashMap；
导入javax.ws.rs.products；
导入javax.ws.rs.WebApplicationException；
导入javax.ws.rs.core.MediaType；
导入javax.ws.rs.core.MultivaluedMap；
导入javax.ws.rs.ext.MessageBodyWriter；
导入javax.ws.rs.ext.Provider；
导入com.google.protobuf.Message；
@提供者
@产生（“应用程序/x-protobuf”）
公共类ProtobufMessageBodyWriter实现MessageBodyWriter{
/**
*将重复调用（getSize、writeTo）的成本节省到1的缓存
*反对。
*/
公共布尔值可写（类类型、类型genericType、，
批注[]批注，MediaType MediaType）{
返回Message.class.isAssignableFrom（类型）；
}
私有映射缓冲区=新的WeakHashMap（）；
公共长getSize（消息m、类类型、类型genericType、，
批注[]批注，MediaType MediaType）{
ByteArrayOutputStream bas=新的ByteArrayOutputStream（）；
试试{
m、 令状(baos);；
}捕获（IOE）{
返回-1；
}
byte[]bytes=baos.toByteArray（）；
buffer.put（m，字节）；
返回bytes.length；
}
public void writeTo（消息m、类类型、类型genericType、，
注释[]注释，MediaType MediaType，
多值映射HttpHeader，OutputStream entityStream）
抛出IOException，WebApplicationException{
entityStream.write（buffer.remove（m））；
}
}
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Map;
import java.util.WeakHashMap;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import com.google.protobuf.Message;
@Provider
@Produces("application/x-protobuf")
public class ProtobufMessageBodyWriter implements MessageBodyWriter<Message> {
/**
* a cache to save the cost of duplicated call(getSize, writeTo) to one
* object.
*/
public boolean isWriteable(Class<?> type, Type genericType,
Annotation[] annotations, MediaType mediaType) {
return Message.class.isAssignableFrom(type);
}
private Map<Object, byte[]> buffer = new WeakHashMap<Object, byte[]>();
public long getSize(Message m, Class<?> type, Type genericType,
Annotation[] annotations, MediaType mediaType) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
m.writeTo(baos);
} catch (IOException e) {
return -1;
}
byte[] bytes = baos.toByteArray();
buffer.put(m, bytes);
return bytes.length;
}
public void writeTo(Message m, Class type, Type genericType,
Annotation[] annotations, MediaType mediaType,
MultivaluedMap httpHeaders, OutputStream entityStream)
throws IOException, WebApplicationException {
entityStream.write(buffer.remove(m));
}
}
import java.io.IOException;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import javax.ws.rs.Consumes;
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 com.google.protobuf.GeneratedMessage;
import com.google.protobuf.Message;
@Provider
@Consumes("application/x-protobuf")
public class ProtobufMessageBodyReader implements MessageBodyReader<Message> {
public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return Message.class.isAssignableFrom(type);
}
public Message readFrom(Class<Message> type, Type genericType, Annotation[] annotations,
MediaType mediaType, MultivaluedMap<String, String> httpHeaders,
InputStream entityStream) throws IOException, WebApplicationException {
try {
Method newBuilder = type.getMethod("newBuilder");
GeneratedMessage.Builder builder = (GeneratedMessage.Builder) newBuilder.invoke(type);
return builder.mergeFrom(entityStream).build();
} catch (Exception e) {
throw new WebApplicationException(e);
}
}
}
import java.io.IOException；
导入java.io.InputStream；
导入java.lang.annotation.annotation；
导入java.lang.reflect.Method；
导入java.lang.reflect.Type；
导入javax.ws.rs.Consumes；
导入javax.ws.rs.WebApplicationException；
导入javax.ws.rs.core.MediaType；
导入javax.ws.rs.core.MultivaluedMap；
导入javax.ws.rs.ext.MessageBodyReader；
导入javax.ws.rs.ext.Provider；
导入com.google.protobuf.GeneratedMessage；
导入com.google.protobuf.Message；
@提供者
@消耗（“应用程序/x-protobuf”）
公共类ProtobufMessageBodyReader实现MessageBodyReader{
公共布尔值可读取（类类型、类型genericType、注释[]注释、MediaType MediaType）{
返回Message.class.isAssignableFrom（类型）；
}
公共消息读取自（类类型、类型genericType、批注[]批注、，
MediaType MediaType，多值映射HttpHeader，
InputStream entityStream）引发IOException，WebApplicationException{
试试{
方法newBuilder=type.getMethod（“newBuilder”）；
GeneratedMessage.Builder=（GeneratedMessage.Builder）newBuilder.invoke（类型）；
返回builder.mergeFrom（entityStream.build（）；
}捕获（例外e）{
抛出新的WebApplicationException（e）；
}
}
}
iswriteableisReadableMessage.classLoginMessage