java - reSTLet 分页 HttpClientHelper 启动/停止

Question

我从初始 URI GET 请求开始。我得到返回结果以及指向下一批记录的链接。我循环遍历直到检索到所有记录。似乎性能受到了影响，因为记录器显示 HttpClientHelper 在每次请求后启动和停止。这是可以避免的吗？

Client client = new Client(new Context(), Protocol.HTTP);
ClientResource clientResource;
JsonRepresentation rep;
JSONObject object;
while(nextURI !=null)
{
    clientResource = new ClientResource(nextURI);

    //excessive HttpClientHelper start/stop triggered at next line
    rep = new JsonRepresentation(service.get(MediaType.APPLICATION_JSON));

    clientResource.setNext(client);
    .
    .
    .
}

记录器显示以下内容:

May 13, 2015 9:30:52 AM org.restlet.ext.net.HttpClientHelper start

INFO: Starting the HTTP client May 13, 2015 9:30:53 AM org.restlet.ext.net.HttpClientHelper start

INFO: Starting the HTTP client May 13, 2015 9:30:53 AM org.restlet.ext.net.HttpClientHelper start

INFO: Starting the HTTP client May 13, 2015 9:30:53 AM org.restlet.ext.net.HttpClientHelper stop

INFO: Stopping the HTTP client May 13, 2015 9:30:53 AM org.restlet.ext.net.HttpClientHelper stop

INFO: Stopping the HTTP client

Answer 1

我认为您调用方法 setNext 太迟了。您需要在任何 HTTP 调用之前以及在创建 ClientResource 实例之后立即调用它，以防止客户端连接器在每次调用时启动。

您可以在下面找到示例:

Client client = new Client(new Context(), Protocol.HTTP);

for (int i = 0; i < 5; i++) {
    ClientResource clientResource = new ClientResource("http://...");
    clientResource.setNext(client);

    Representation representation = clientResource.get();
    (...)
}

在这种情况下，客户端连接器只启动一次。

希望对你有帮助， 蒂埃里