Question

我有一个EC2映像正在运行并托管可从URL访问的REST服务。以下是我的所作所为：

ssh -i <ec2-certificate> D port user@ec2-host
在firefox网络浏览器中设置代理并输入网址http://ec2-host:port/demo/workflow/lists/demo_workflow

工作正常。

现在我需要使用Java程序发送GET方法;下面是我的代码：

    HttpClient client = new HttpClient();
    HttpMethod method = new GetMethod("http://ec2-host:port/demo/workflow/lists/demo_workflow");
    HostConfiguration config = client.getHostConfiguration();
    config.setProxy(proxyHost, port);
    client.setHostConfiguration(config);

    try {
          client.executeMethod(method);
          if (method.getStatusCode() == HttpStatus.SC_OK) {
             String response = method.getResponseBodyAsString();
             System.out.println("Response = " + response);
          }
    } catch (IOException e) {
          e.printStackTrace();
    } finally {
          method.releaseConnection();
    }

但是现在我遇到了以下例外情况。有什么提示吗？

010-08-11 16：46：34,781 INFO [HttpMethodDirector] I / O异常（org.apache.commons.httpclient.NoHttpResponseException）在处理请求时捕获：服务器184.72.46.209无法响应 2010-08-11 16：46：34,781 INFO [HttpMethodDirector]重试请求 org.apache.commons.httpclient.NoHttpResponseException：服务器 [ec2-host] 失败回应 org.apache.commons.httpclient.HttpMethodBase.readStatusLine（HttpMethodBase.java:1976）在 org.apache.commons.httpclient.HttpMethodBase.readResponse（HttpMethodBase.java:1735）在 org.apache.commons.httpclient.HttpMethodBase.execute（HttpMethodBase.java:1098）在 org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry（HttpMethodDirector.java:398）在 org.apache.commons.httpclient.HttpMethodDirector.executeMethod（HttpMethodDirector.java:171）在 org.apache.commons.httpclient.HttpClient.executeMethod（HttpClient.java:397）在 org.apache.commons.httpclient.HttpClient.executeMethod（HttpClient.java:323） at .... [我的代码抛出的地方调用时的异常 client.executeMethod（配置）]

设置HttpClient代理以访问EC2上的REST URL

0 个答案: