在URL查询参数中使用某些字符时发生Java 9 HttpClient异常

这是我的示例代码。查询编码为UTF-8：

HttpRequest request = HttpRequest.newBuilder()
    .header("content-type", "application/json;charset=UTF-8")
    .uri(URI.create("http://localhost:8080/test?param1=test%C5%84"))
    .GET()
    .build();

HttpClient.newBuilder()
    .version(HttpClient.Version.HTTP_2)
    .build()
    .send(request, HttpResponse.BodyHandler.asString(Charset.forName("UTF-8")));

运行此示例后，我得到以下异常：

java.lang.IllegalArgumentException: char=324
at jdk.incubator.httpclient/jdk.incubator.http.internal.hpack.Huffman.codeOf(Huffman.java:559)
at jdk.incubator.httpclient/jdk.incubator.http.internal.hpack.Huffman.lengthOf(Huffman.java:524)
at jdk.incubator.httpclient/jdk.incubator.http.internal.hpack.StringWriter.configure(StringWriter.java:79)
at jdk.incubator.httpclient/jdk.incubator.http.internal.hpack.StringWriter.configure(StringWriter.java:62)
at jdk.incubator.httpclient/jdk.incubator.http.internal.hpack.IndexNameValueWriter.value(IndexNameValueWriter.java:64)
at jdk.incubator.httpclient/jdk.incubator.http.internal.hpack.Encoder.literal(Encoder.java:422)
at jdk.incubator.httpclient/jdk.incubator.http.internal.hpack.Encoder.header(Encoder.java:245)
at jdk.incubator.httpclient/jdk.incubator.http.internal.hpack.Encoder.header(Encoder.java:198)
at jdk.incubator.httpclient/jdk.incubator.http.Http2Connection.encodeHeadersImpl(Http2Connection.java:927)
at jdk.incubator.httpclient/jdk.incubator.http.Http2Connection.encodeHeaders(Http2Connection.java:878)
at jdk.incubator.httpclient/jdk.incubator.http.Http2Connection.encodeHeaders(Http2Connection.java:951)
at jdk.incubator.httpclient/jdk.incubator.http.Http2Connection.sendFrame(Http2Connection.java:984)
at jdk.incubator.httpclient/jdk.incubator.http.Stream.sendHeadersAsync(Stream.java:547)
at jdk.incubator.httpclient/jdk.incubator.http.Exchange.lambda$responseAsyncImpl0$8(Exchange.java:322)
at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072)
at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506)
at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2073)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SSLFlowDelegate.setALPN(SSLFlowDelegate.java:164)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SSLFlowDelegate.access$200(SSLFlowDelegate.java:81)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SSLFlowDelegate$Reader.processData(SSLFlowDelegate.java:340)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SSLFlowDelegate$Reader$ReaderDownstreamPusher.run(SSLFlowDelegate.java:215)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SequentialScheduler$SynchronizedRestartableTask.run(SequentialScheduler.java:175)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SequentialScheduler$CompleteRestartableTask.run(SequentialScheduler.java:147)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SequentialScheduler$TryEndDeferredCompleter.complete(SequentialScheduler.java:315)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SequentialScheduler$CompleteRestartableTask.run(SequentialScheduler.java:149)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:198)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:271)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:224)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SSLFlowDelegate$Reader.incoming(SSLFlowDelegate.java:242)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SubscriberWrapper.incomingCaller(SubscriberWrapper.java:388)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SubscriberWrapper.onNext(SubscriberWrapper.java:343)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SubscriberWrapper.onNext(SubscriberWrapper.java:58)
at jdk.incubator.httpclient/jdk.incubator.http.SocketTube$InternalReadPublisher$InternalReadSubscription.read(SocketTube.java:739)
at jdk.incubator.httpclient/jdk.incubator.http.SocketTube$SocketFlowTask.run(SocketTube.java:171)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:198)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:271)
at jdk.incubator.httpclient/jdk.incubator.http.internal.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:224)
at jdk.incubator.httpclient/jdk.incubator.http.SocketTube$InternalReadPublisher$InternalReadSubscription.signalReadable(SocketTube.java:675)
at jdk.incubator.httpclient/jdk.incubator.http.SocketTube$InternalReadPublisher$ReadEvent.signalEvent(SocketTube.java:829)
at jdk.incubator.httpclient/jdk.incubator.http.SocketTube$SocketFlowEvent.handle(SocketTube.java:243)
at jdk.incubator.httpclient/jdk.incubator.http.HttpClientImpl$SelectorManager.handleEvent(HttpClientImpl.java:769)
at jdk.incubator.httpclient/jdk.incubator.http.HttpClientImpl$SelectorManager.run(HttpClientImpl.java:731)

char=324

表示从查询中解码的

当我阅读堆栈跟踪时，我在类中找到了
jdk.incubator.http.Stream
此方法：

private void setPseudoHeaderFields() {
    HttpHeadersImpl hdrs = requestPseudoHeaders;
    String method = request.method();
    hdrs.setHeader(":method", method);
    URI uri = request.uri();
    hdrs.setHeader(":scheme", uri.getScheme());
    // TODO: userinfo deprecated. Needs to be removed
    hdrs.setHeader(":authority", uri.getAuthority());
    // TODO: ensure header names beginning with : not in user headers
    String query = uri.getQuery();
    String path = uri.getPath();
    if (path == null || path.isEmpty()) {
        if (method.equalsIgnoreCase("OPTIONS")) {
            path = "*";
        } else {
            path = "/";
        }
    }
    if (query != null) {
        path += "?" + query;
    }
    hdrs.setHeader(":path", path);
}

在这个方法中，使用了
uri.getQuery（）
，它给出了已解码的查询并导致上述异常

当我在调试模式下使用
uri.getRawQuery（）
时（这给了我们编码的查询），一切都很顺利

我的问题是：这是一个bug还是故意使用？如果不是bug，如何避免异常？
它是bug：

java.lang.IllegalArgumentException与jdk.incubator.httpclient一起使用时使用一些UTF-8字符



某些UTF-8字符（如“š”）不能与HttpClient一起使用。然而
像“å”这样的其他人也可以

见：


Java 9/10 HttpClient正在孵化中。它还没有准备好生产。它在包名中非常清楚地说明了这一点。因此，它很可能包含bug

它将以Java 11（）的形式正式发布。
test%C5%84
maybe（额外%）？如
“…？param=“+urlcoder.encode”（ń”，“UTF-8”）
对不起，这是我的错误。应该有
test%C5%84
，但在方法
setPseudoHeaderFields（）
中，我得到了
…testń
，以及未来的异常。哈夫曼压缩似乎使用了一种简单的字符到字节的转换，即ISO-8859-1。因此，以我有限的经验来看，这似乎是一个错误。您可以恢复到Base64:
“…？param1=“+Base64.getEncoder（）.encode（“纡”）
，但是您也需要自己解码参数。注意：HTTP客户端API将在Java 11中标准化，并将移动到名为
Java.net.HTTP
的新包（和模块）。（）@Slaw我很高兴，终于在jdk中实现了一个标准的http客户端！你可以计划去。我可以确认，JDK/11（JDK-11-ea+17）可以正常工作。