javax.ws.rs.core.Response#fromResponse()源码实例Demo

@Override
public ContainerResponse filter(ContainerRequest req,
		ContainerResponse contResp) {

	ResponseBuilder resp = Response.fromResponse(contResp.getResponse());
	resp.header("Access-Control-Allow-Origin", "*").header(
			"Access-Control-Allow-Methods", "GET, POST, OPTIONS");

	String reqHead = req.getHeaderValue("Access-Control-Request-Headers");

	if (null != reqHead && !reqHead.equals(null)) {
		resp.header("Access-Control-Allow-Headers", reqHead);
	}

	contResp.setResponse(resp.build());
	return contResp;
}
 

@Override
public Response getHomeResource(Entity home) throws URISyntaxException, MessageProcessingException, IOException {

    URL url = URLBuilder.create(restClient.getBaseURL()).addPath(PathConstants.HOME).build();

    Response response = restClient.getRequest(url);
    if (response.getStatus() == Response.Status.OK.getStatusCode()) {
        try {
            JsonNode element = mapper.readValue(response.readEntity(String.class), JsonNode.class);
            Map<String, List<Link>> links = mapper.readValue(element,
                    new TypeReference<Map<String, List<BasicLink>>>() {
                    });
            home.getData().putAll(links);
        } catch (JsonParseException e) {
            // invalid Json, or non-Json response?
            ResponseBuilder builder = Response.fromResponse(response);
            builder.status(Response.Status.INTERNAL_SERVER_ERROR);
            return builder.build();
        }
    }
    return response;
}
 

@Override
public ContainerResponse filter(ContainerRequest req, ContainerResponse contResp) {
 
    ResponseBuilder resp = Response.fromResponse(contResp.getResponse());
    resp.header("Access-Control-Allow-Origin", "*")
        .header("Access-Control-Allow-Methods", "GET, POST, OPTIONS");
 
    String reqHead = req.getHeaderValue("Access-Control-Request-Headers");
 
    if(null != reqHead && !reqHead.equals("")){
        resp.header("Access-Control-Allow-Headers", reqHead);
    }
 
    contResp.setResponse(resp.build());
    return contResp;
}
 

/**
 * Once the client executes the http call, then it receives the http response. This method takes care of handling
 * that. In case you need to handle it differently you can override this method.
 *
 * @param httpResponse  : Received Apache http response from the server
 *
 * @return  : Effective response with handled http session.
 * @throws IOException
 */
public Response handleResponse(CloseableHttpResponse httpResponse) throws IOException {
    Response serverResponse = createCharsetResponse(httpResponse);

    Header[] allHeaders = httpResponse.getAllHeaders();
    Response.ResponseBuilder responseBuilder = Response.fromResponse(serverResponse);
    for (Header thisHeader : allHeaders) {
        String headerKey = thisHeader.getName();
        responseBuilder = responseBuilder.header(headerKey, thisHeader.getValue());

        handleHttpSession(serverResponse, headerKey);
    }

    return responseBuilder.build();
}
 

@Override
public ContainerResponse filter( ContainerRequest req, ContainerResponse contResp ) {

	ResponseBuilder resp = Response.fromResponse( contResp.getResponse());
	Map<String,String> headers = buildHeaders(
			req.getHeaderValue( CORS_REQ_HEADERS ),
			req.getHeaderValue( ORIGIN ));

	for( Map.Entry<String,String> h : headers.entrySet())
		resp.header( h.getKey(), h.getValue());

	contResp.setResponse( resp.build());
	return contResp;
}