Question

我意识到它有点不RESTful，但我想使用Jersey客户端将一个Spring Integration GenericMessage发送到使用Java序列化作为“编组”的Jersey服务器。是否有内置或贡献支持，或者我是否必须自己编写MessageBodyReader / Writer？我对setting the type in the Client request和"application/x-java-serialized-object"都进行了MediaType.APPLICATION_OCTET_STREAM_TYPE尝试，它只是给出了通常情况：

ClientHandlerException: A message body writer for Java type,
    class org.springframework.integration.message.GenericMessage,
    and MIME media type, application/x-java-serialized-object, was not found

谷歌和Jersey User Guide在这个问题上都很奇怪。我还接受另一种允许向Jersey API发送任意GenericMessage的方法。我不一定要进行序列化。它似乎是处理具有任意有效载荷类型的消息的最简单路由。

Answer 1

我还没有找到一个，显然没有人知道其中一个，所以我用Commons Lang's SerializationUtils编写了自己的快速实现来为我做脏工作：

import org.apache.commons.lang.SerializationUtils;
import org.springframework.stereotype.Component;

import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Serializable;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

/**
 * Created with IntelliJ IDEA.
 * User: ryan
 * Date: 2/25/13
 * Time: 2:07 PM
 */
@Component
@Provider
public class SerializationMessageBodyReaderAndWriter
        implements MessageBodyReader<Serializable>, MessageBodyWriter<Serializable> {
    public static final String APPLICATION_JAVA_SERIALIZED_OBJECT =
            "application/x-java-serialized-object";
    public static final MediaType APPLICATION_JAVA_SERIALIZED_OBJECT_TYPE =
            MediaType.valueOf(APPLICATION_JAVA_SERIALIZED_OBJECT);

    @Override
    public boolean isReadable(Class<?> type,
                              Type genericType,
                              Annotation[] annotations,
                              MediaType mediaType) {
        return mediaType.isCompatible(APPLICATION_JAVA_SERIALIZED_OBJECT_TYPE)
                && Serializable.class.isAssignableFrom(type);
    }

    @Override
    public Serializable readFrom(Class<Serializable> type,
                                 Type genericType,
                                 Annotation[] annotations,
                                 MediaType mediaType,
                                 MultivaluedMap<String, String> httpHeaders,
                                 InputStream entityStream) {
        return (Serializable) SerializationUtils.deserialize(entityStream);
    }

    @Override
    public boolean isWriteable(Class<?> type,
                               Type genericType,
                               Annotation[] annotations,
                               MediaType mediaType) {
        return mediaType.isCompatible(APPLICATION_JAVA_SERIALIZED_OBJECT_TYPE)
                && Serializable.class.isAssignableFrom(type);
    }

    @Override
    public long getSize(Serializable o,
                        Class<?> type,
                        Type genericType,
                        Annotation[] annotations,
                        MediaType mediaType) {
        return -1;
    }

    @Override
    public void writeTo(Serializable o,
                        Class<?> type,
                        Type genericType,
                        Annotation[] annotations,
                        MediaType mediaType,
                        MultivaluedMap<String, Object> httpHeaders,
                        OutputStream entityStream) {
        SerializationUtils.serialize(o, entityStream);
    }
}

如何让Jersey使用Java序列化？

1 个答案: