设置JAX-RS 2.0客户端API的请求超时

Question

我编写了一个简单的REST web服务客户端类，它使用JAX-RS 2.0客户端API来发出REST请求。我正试图弄清楚如何为每个调用设置请求超时。下面是请求的代码:

Client client = ClientBuilder.newBuilder().build();
WebTarget resourceTarget = client.target(restServiceUrl)
        .path("{regsysID}/{appointmentID}/")
        .resolveTemplate("regsysID", regSysId)
        .resolveTemplate("appointmentID", apptId);
Invocation invocation = resourceTarget.request(MediaType.APPLICATION_JSON).buildPut(null);
String createSessionJson = invocation.invoke(String.class);

Answer 1

注意:这是JAX-RS 2.1中可用的新方法

这是一篇很老的文章，但是下面的代码可以同时用于jersey和restasy。

ClientBuilder clientBuilder = ClientBuilder.newBuilder();
clientBuilder.connectTimeout(10, TimeUnit.SECONDS);
clientBuilder.readTimeout(12, TimeUnit.SECONDS);
Client client = clientBuilder.build();

Answer 2

您可以先创建一个ClientConfig，并在创建新客户端时将其作为参数提供。

import org.glassfish.jersey.client.ClientProperties;
ClientConfig configuration = new ClientConfig();
configuration.property(ClientProperties.CONNECT_TIMEOUT, 1000);
configuration.property(ClientProperties.READ_TIMEOUT, 1000);
Client client = ClientBuilder.newClient(configuration);

Answer 3

使用restasy，这可以通过这样构建您的客户端来完成。

Client client = new ResteasyClientBuilder()
    .establishConnectionTimeout(2, TimeUnit.SECONDS)
    .socketTimeout(2, TimeUnit.SECONDS)
    .build();

我还没有看到可以通过ClientBuilder.newClient(Configuration configuration)设置的标准配置属性列表，这些属性将需要使这个可移植

Answer 4

首先，你必须添加相关的依赖项(这里是为WildFly 10.1):

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5</version>
    <scope>provided</scope>
</dependency>
<dependency>
    <groupId>org.jboss.resteasy</groupId>
    <artifactId>resteasy-client</artifactId>
    <version>3.0.14.Final</version>
    <scope>provided</scope>
</dependency>

下一步-创建一个正常的Apache HttpClient，并将它推送到RestEasy Enginge，重写一个方法，这会导致问题:

// create here a normal Apache HttpClient with all parameters, that you need
HttpClient httpClient = createHttpClient(connectTimeout,
                                         socketTimeout,
                                         connectionRequestTimeout,
                                         maxTotalHTTPConnections);
// Deprecated Apache classes cleanup https://issues.jboss.org/browse/RESTEASY-1357
// Client Framework not honoring connection timeouts Apache Client 4.3 https://issues.jboss.org/browse/RESTEASY-975
ApacheHttpClient4Engine engine = new ApacheHttpClient4Engine(httpClient) {
        @Override
        protected void loadHttpMethod(ClientInvocation request, HttpRequestBase httpMethod) throws Exception {
            super.loadHttpMethod(request, httpMethod);
            httpMethod.setParams(new BasicHttpParams());
        }
    };
return new ResteasyClientBuilder().httpEngine(engine).build();

看看https://issues.jboss.org/browse/RESTEASY-975似乎，这个问题刚刚在3.1.0.Final版本中解决了。

Answer 5

对于坚持使用旧JAX-RS 2.0 API和旧Resteasy实现的人，您可以使用以下方法:

Client client = new ResteasyClientBuilder()             
     .establishConnectionTimeout(3, TimeUnit.SECONDS)
     .socketTimeout(5, TimeUnit.SECONDS).build();

尽管名称，socketTimeout代表"读取超时"，因为在文档中，它代表"等待数据的超时"。

Answer 6

如果您使用的是Jersey 2。这是一个简单的解决方案，它是为我工作

import com.jclient.JClient;
Client c = Client.create();
WebResource webResource = c.resource("requestUrl");
c.setConnectTimeout(yourMins*60*1000);