Question

我可以在using custom JAXBContext找到Jersey 2文档，但我找不到的是关于重用其JAXBContext的文档。

我希望能够在不发出HTTP请求的情况下编组/解组实体（例如，在类路径上解组某些XML文件，为数据库I / O编组/解组数据等）。

如何获取我的Jersey 2客户端已使用的JAXBContext实例？

Answer 1

我仍然没有想出如何获取 JAXBContext，但我已经想出如何重用：

client.target("file:///path/to/resource")
        .register((ClientRequestFilter) requestContext ->
                requestContext.abortWith(Response.ok()
                        .entity(new FileInputStream(Paths.get(requestContext.getUri())
                                .toFile()))
                        .build()))
        .request()
        .get(Planet.class);

类似的ClientRequestFilter可用于从数据库等返回字符串或输入流，或用于写入文件系统或数据库。

Answer 2

import org.glassfish.jersey.jaxb.internal.AbstractJaxbProvider;

import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

public class JaxbContextStore {
    private JaxbProvider jaxbProvider = new JaxbProvider();

    public JAXBContext getStoredJaxbContext(Class type) throws JAXBException {
        return jaxbProvider.getStoredJaxbContext(type);
    }

    private static class JaxbProvider extends AbstractJaxbProvider {
        public JaxbProvider() {
            super(null);
        }

        @Override
        public JAXBContext getStoredJaxbContext(Class type) throws JAXBException {
            return super.getStoredJaxbContext(type);
        }

        @Override
        public boolean isReadable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
            throw new UnsupportedOperationException();
        }

        @Override
        public Object readFrom(Class type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap httpHeaders, InputStream entityStream) throws IOException, WebApplicationException {
            throw new UnsupportedOperationException();
        }

        @Override
        public boolean isWriteable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
            throw new UnsupportedOperationException();
        }

        @Override
        public void writeTo(Object o, Class type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException {
            throw new UnsupportedOperationException();
        }
    }
}

Jersey 2 Client - 如何获取JAXBContext

2 个答案: