ProxyFactory在RESTEasy线程中的替换安全吗？

Question

我在RESTEasy中使用ProxyFactory和ClientExecutor开发了一个服务，如下所示：

PoolingClientConnectionManager connectionManager = new PoolingClientConnectionManager();
DefaultHttpClient httpClient = new DefaultHttpClient(connectionManager);
HttpParams params = httpClient.getParams();
HttpConnectionParams.setConnectionTimeout(params, 5000);
HttpConnectionParams.setSoTimeout(params, 5000);
ClientExecutor clientExecutor = new ApacheHttpClient4Executor(httpClient);
MyClass client = ProxyFactory.create(MyClass.class, "http://www.example.com", clientExecutor);

它总是完美的工作。在RESTEasy同时反对ClientExecutor和ProxyFactory之后，他们为外部连接提供了一个新的ResteasyClient，但是我不知道这个新的ResteasyClient是否是线程安全。这是文档中的新示例代码：

ResteasyClient client = new ResteasyClientBuilder().build();
ResteasyWebTarget target = client.target("http://example.com/base/uri");

SimpleClient simple = target.proxy(SimpleClient.class);

更新：--我在ResteasyClient中使用了该代码，并得到了许多这样的错误：

javax.ws.rs.ProcessingException: Unable to invoke request

引起的

java.lang.IllegalStateException: Invalid use of BasicClientConnManager: connection still allocated. Make sure to release the connection before allocating another one.

Answer 1

我们用这个：

    final ResteasyClient client = new ResteasyClientBuilder()
        .connectionPoolSize(10)
        .maxPooledPerRoute(5)
        .build();

调试之后，我发现(至少在我们的情况下) RESTEasy客户端默认使用ThreadSafeClientConnManager，因此我认为没有必要指定不同的ThreadSafeClientConnManager，尽管根据JavaDoc，它被反对为支持PoolingHttpClientConnectionManager (注意额外的Http)。但是在RESTEasy客户机3.0.5中已经修复了这个问题。fixed：https://issues.jboss.org/browse/RESTEASY-948

这是一片HTTP连接管理器的丛林。

Answer 2

这对我有用。只需要找到用于设置Apache引擎的钩子。主要基于RestEasy 3.0.5.最终API

public static Object setupServiceProxy(@NotNull Class responseClass) {
    ResteasyProviderFactory factory = ResteasyProviderFactory.getInstance();
    ResteasyClientBuilder builder = new ResteasyClientBuilder().providerFactory(factory);
    ResteasyClient client = builder.httpEngine(setupHttpDefaults()).build();
    ResteasyWebTarget target = client.target(url);
    return target.proxy(responseClass);
}

public static ClientHttpEngine setupHttpDefaults() {
    PoolingClientConnectionManager connectionManager = new PoolingClientConnectionManager();
    DefaultHttpClient httpClient = new DefaultHttpClient(connectionManager);
    HttpParams params = httpClient.getParams();
    HttpConnectionParams.setConnectionTimeout(params, 30000);
    HttpConnectionParams.setSoTimeout(params, 30000);
    BasicHttpContext localContext = new BasicHttpContext();
    return new ApacheHttpClient4Engine(httpClient, localContext);
}