Java 来自客户端的Web服务调用超时

我正在使用RestEasy客户端调用Web服务。一个要求是，如果调用运行超过5秒，则中止/超时调用。我如何使用RestEasy客户端实现这一点？我只看到服务器端超时，也就是说，如果请求在某个时间内没有完成，Rest Easy Web设备将使请求超时。

RESTEasy客户端通常使用Apache HttpClient来处理网络对话

<bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
    <property name="params" ref="httpParams"/>
</bean>

<bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>

<bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
    <constructor-arg ref="httpParams"/>
    <property name="connectionTimeout" value="10000"/>
    <property name="soTimeout" value="30000"/>
</bean>

您可以使用自己的自定义超时参数覆盖HttpClient属性：

DefaultHttpClient httpClient = new DefaultHttpClient();
HttpParams params = httpClient.getParams();
HttpConnectionParams.setConnectionTimeout(params, connectionTimeoutMillis);
HttpConnectionParams.setSoTimeout(params, socketTimeoutMillis);

<bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
    <property name="params" ref="httpParams"/>
</bean>

<bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>

<bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
    <constructor-arg ref="httpParams"/>
    <property name="connectionTimeout" value="10000"/>
    <property name="soTimeout" value="30000"/>
</bean>

第一个参数允许您指定建立初始连接的超时时间，第二个参数允许您指定套接字在不发送数据时等待的最长时间

<bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
    <property name="params" ref="httpParams"/>
</bean>

<bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>

<bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
    <constructor-arg ref="httpParams"/>
    <property name="connectionTimeout" value="10000"/>
    <property name="soTimeout" value="30000"/>
</bean>

您可以使用修改后的HttpClient构建客户端执行器：

ClientExecutor executor = new ApacheHttpClient4Executor(httpClient);

<bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
    <property name="params" ref="httpParams"/>
</bean>

<bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>

<bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
    <constructor-arg ref="httpParams"/>
    <property name="connectionTimeout" value="10000"/>
    <property name="soTimeout" value="30000"/>
</bean>

它可以依次用于构建ClientRequest对象。或者，如果您使用的是RESTEasy的Spring配置，则可以将其注入RestClientProxyFactoryBean

<bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
    <property name="params" ref="httpParams"/>
</bean>

<bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>

<bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
    <constructor-arg ref="httpParams"/>
    <property name="connectionTimeout" value="10000"/>
    <property name="soTimeout" value="30000"/>
</bean>

---

这与绝对5秒超时并不完全相同，但取决于您试图完成的任务，调整这两个属性通常可以满足需要。

如果您使用的是带spring integration（）的resteasy client framework，则以下是设置超时值的方法：

<bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
    <property name="params" ref="httpParams"/>
</bean>

<bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>

<bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
    <constructor-arg ref="httpParams"/>
    <property name="connectionTimeout" value="10000"/>
    <property name="soTimeout" value="30000"/>
</bean>

<bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
    <property name="params" ref="httpParams"/>
</bean>

<bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>

<bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
    <constructor-arg ref="httpParams"/>
    <property name="connectionTimeout" value="10000"/>
    <property name="soTimeout" value="30000"/>
</bean>

---

Carter Page的回答对于Apache HttpClient版本>=4.0是正确的

<bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
    <property name="params" ref="httpParams"/>
</bean>

<bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>

<bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
    <constructor-arg ref="httpParams"/>
    <property name="connectionTimeout" value="10000"/>
    <property name="soTimeout" value="30000"/>
</bean>

对于早期版本的HttpClient（如3.1），代码略有不同：

<bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
    <property name="params" ref="httpParams"/>
</bean>

<bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>

<bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
    <constructor-arg ref="httpParams"/>
    <property name="connectionTimeout" value="10000"/>
    <property name="soTimeout" value="30000"/>
</bean>

HttpClient httpClient = new HttpClient();
HttpConnectionParams params = httpClient.getHttpConnectionManager().getParams();
params.setConnectionTimeout(connectionTimeoutMillis);
params.setSoTimeout(socketTimeoutMillis);

ClientExecutor executor = new ApacheHttpClientExecutor(httpClient);
MyService service = ProxyFactory.create(MyService.class, URL, executor);

---

如果您喜欢builder模式，以下是您的操作方式：

<bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
    <property name="params" ref="httpParams"/>
</bean>

<bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>

<bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
    <constructor-arg ref="httpParams"/>
    <property name="connectionTimeout" value="10000"/>
    <property name="soTimeout" value="30000"/>
</bean>

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

---

从这里开始：

考虑到establishConnectionTimeout和socketTimeout都不推荐使用

<bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
    <property name="params" ref="httpParams"/>
</bean>

<bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>

<bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
    <constructor-arg ref="httpParams"/>
    <property name="connectionTimeout" value="10000"/>
    <property name="soTimeout" value="30000"/>
</bean>

以下是jboss v7.3的解释：

<bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
    <property name="params" ref="httpParams"/>
</bean>

<bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>

<bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
    <constructor-arg ref="httpParams"/>
    <property name="connectionTimeout" value="10000"/>
    <property name="soTimeout" value="30000"/>
</bean>

以下符合ClientBuilder规范的方法替换了某些不推荐的RESTEasy方法：

<bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
    <property name="params" ref="httpParams"/>
</bean>

<bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>

<bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
    <constructor-arg ref="httpParams"/>
    <property name="connectionTimeout" value="10000"/>
    <property name="soTimeout" value="30000"/>
</bean>

• connectTimeout方法取代了buildConnectionTimeout方法

  <bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
      <property name="params" ref="httpParams"/>
  </bean>
  
  <bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>
  
  <bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
      <constructor-arg ref="httpParams"/>
      <property name="connectionTimeout" value="10000"/>
      <property name="soTimeout" value="30000"/>
  </bean>
  

  • connectTimeout方法确定客户端在建立新服务器连接时必须等待多长时间
• readTimeout方法取代了socketTimeout方法

  <bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
      <property name="params" ref="httpParams"/>
  </bean>
  
  <bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>
  
  <bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
      <constructor-arg ref="httpParams"/>
      <property name="connectionTimeout" value="10000"/>
      <property name="soTimeout" value="30000"/>
  </bean>
  

  • readTimeout方法确定客户端必须等待服务器响应的时间

这在我的《RestEASY 3.12.1》中很有效。最终版：

<bean id="httpClient" class="org.apache.http.impl.client.DefaultHttpClient">
    <property name="params" ref="httpParams"/>
</bean>

<bean id="httpParams" class="org.apache.http.params.BasicHttpParams"/>

<bean id="httpConnectionParams" class="org.apache.http.params.HttpConnectionParamBean">
    <constructor-arg ref="httpParams"/>
    <property name="connectionTimeout" value="10000"/>
    <property name="soTimeout" value="30000"/>
</bean>

    private Client clientBuilder() {
        return new ResteasyClientBuilder()
            .connectTimeout(2, TimeUnit.SECONDS)
            .readTimeout(10, TimeUnit.SECONDS)
            .build();
    }

---

我们如何处理？我的意思是我想记录是否发生超时。目前这两种方法都不推荐使用