Java Jersey 2.x：如何在 RESTful 客户端上添加标题
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Jersey 2.x: How to add Headers on RESTful Client
提问by Joshua Kissoon
I've already looked at How to add Headers on RESTful call using Jersey Client API, however this is for Jersey 1.x.
我已经看过如何使用 Jersey 客户端 API 在 RESTful 调用中添加标题，但是这是针对 Jersey 1.x 的。
How do I set a header value (such as an authorization token) in Jersey 2.21?
如何在 Jersey 2.21 中设置标头值（例如授权令牌）？
Here is the code I'm using:
这是我正在使用的代码：
public static String POST(final String url, final HashMap<String, String> params)
{
ClientConfig config = new ClientConfig();
Client client = ClientBuilder.newClient(config);
WebTarget target = client.target(url);
String data = new Gson().toJson(params);
Entity json = Entity.entity(data, MediaType.APPLICATION_JSON_TYPE);
Invocation.Builder builder = target.request(MediaType.APPLICATION_JSON_TYPE);
return builder.post(json, String.class);
}
采纳答案by rgettman
In Jersey 2.0+, you can register a custom implementation of ClientRequestFilterthat can manipulate the headersin the request that the Client API will send out.
在 Jersey 2.0+ 中，您可以注册一个自定义实现，ClientRequestFilter该实现可以操作客户端 API 将发出的请求中的标头。
You can manipulate the headers via the ClientRequestContextparameter that is passed into the filtermethod. The getHeaders()methodreturns the MultivaluedMapon which you can putyour header(s).
您可以通过ClientRequestContext传递给filter方法的参数来操作标头。该getHeaders()方法返回MultivaluedMap您可以使用put的标题。
You can registeryour custom ClientRequestFilterwith your ClientConfigbefore you call newClient.
您可以注册自定义ClientRequestFilter你ClientConfig打电话之前newClient。
config.register(MyAuthTokenClientRequestFilter.class);
回答by Madura Pradeep
If you want to add only few headers in Jersey 2.x client, you can simply add it when request is sending as follows.
如果您只想在 Jersey 2.x 客户端中添加几个标头，您可以在请求发送时简单地添加它，如下所示。
webTarget.request().header("authorization":"bearer jgdsady6323u326432").post(..)...
回答by mojo-jojo
To add to what Pradeep said, there's also headers(MultivaluedMap < String, Objects> under WebTarget.request() if you have a gaggle of headers:
为了补充 Pradeep 所说的内容，如果您有一堆标题，那么 WebTarget.request() 下还有 headers(MultivaluedMap < String, Objects> ：
MultivaluedMap head = new MultivaluedHashMap();
head.add("something-custom", new Integer(10));
head.add("Content-Type", "application/json;charset=UTF-8");
builder.headers ( head ); // builder from Joshua's original example
