Question

我正在为网络进行代理配置，因为我正在为组织工作。

我无法通过其他客户端（如postman等）在crome上进行REST调用同样的工作，但是从java它失败了。我在eclipse中设置了代理。请在下面找到我的代码。任何想法如何访问里面的REST服务代理

HttpClient httpClient = new DefaultHttpClient();
            HttpGet getRequest = new HttpGet(
                "http://xyz.com");

            //getRequest.addHeader("accept", "application/xml");

            HttpResponse response = httpClient.execute(getRequest);

            if (response.getStatusLine().getStatusCode() != 200) {
                throw new RuntimeException("Failed : HTTP error code : "
                   + response.getStatusLine().getStatusCode());
            }

            BufferedReader br = new BufferedReader(
                             new InputStreamReader((response.getEntity().getContent())));

            String output;
            System.out.println("Output from Server .... \n");
            while ((output = br.readLine()) != null) {
                System.out.println(output);
            }

            httpClient.getConnectionManager().shutdown();
     }

异常

org.apache.http.conn.HttpHostConnectException: Connection to http://xyz.com refused
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:158)
    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:149)
    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:121)
    at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:561)
    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:415)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754)
    at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:732)
    at com.mkyong.rest.RestClient2.main(RestClient2.java:26)
Caused by: java.net.ConnectException: Connection timed out: connect
    at java.net.DualStackPlainSocketImpl.connect0(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:123)
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:148)
    ... 8 more

Answer 1

您需要配置HttpClient以使用代理。查看http://hc.apache.org/httpcomponents-client-ga/tutorial/html/connmgmt.html#d5e473

像： httpClient..getParams().setParameter(ConnRouteParams.DEFAULT_PROXY, proxy);

代理中的REST调用

1 个答案: