Java HttpClient -减少调试输出

Question

我需要加载测试我们一直在开发的应用程序，但是我们的控制台日志经常被大量输出。从以前的经验中，我了解到System.out.println( )是一个相对昂贵的操作，所以我想将打印减少到最低限度。

只有当应用程序尝试Http-post时，打印才会发生，但我们每秒要打印100多个。我们使用Apache的HttpClient 4.5.2和HttpCore 4.4.5。应用程序运行在Tomcat 7上。

我尝试过许多不同的解决方案:删除Tomcat阀门、设置Tomcat日志记录级别、设置-Djavax.net.debug=none，但似乎没有什么可以消除这种情况。有谁知道是什么导致了这些输出，我该如何关闭它们？

调试输出如下所示：

2016-10-11 15:24:42,942 DEBUG [http-bio-8080-exec-3] Connection request: [route: {}->http://localhost:8080][total kept alive: 0; route allocated: 0 of 200; total allocated: 0 of 200]
2016-10-11 15:24:42,956 DEBUG [http-bio-8080-exec-3] Connection leased: [id: 0][route: {}->http://localhost:8080][total kept alive: 0; route allocated: 1 of 200; total allocated: 1 of 200]
2016-10-11 15:24:42,958 DEBUG [http-bio-8080-exec-3] Connecting to localhost:8080
2016-10-11 15:24:42,978 DEBUG [http-bio-8080-exec-3] CookieSpec selected: best-match
2016-10-11 15:24:42,994 DEBUG [http-bio-8080-exec-3] Auth cache not set in the context
2016-10-11 15:24:42,995 DEBUG [http-bio-8080-exec-3] Target auth state: UNCHALLENGED
2016-10-11 15:24:42,996 DEBUG [http-bio-8080-exec-3] Proxy auth state: UNCHALLENGED
2016-10-11 15:24:42,996 DEBUG [http-bio-8080-exec-3] Attempt 1 to execute request
2016-10-11 15:24:42,997 DEBUG [http-bio-8080-exec-3] Sending request: POST /XtService/account/getbalance HTTP/1.1
2016-10-11 15:24:42,997 DEBUG [http-bio-8080-exec-3] >> "POST /XtService/account/getbalance HTTP/1.1[\r][\n]"
2016-10-11 15:24:42,999 DEBUG [http-bio-8080-exec-3] >> "Content-Length: 48[\r][\n]"
2016-10-11 15:24:42,999 DEBUG [http-bio-8080-exec-3] >> "Content-Type: application/x-www-form-urlencoded; charset=UTF-8[\r][\n]"
2016-10-11 15:24:43,000 DEBUG [http-bio-8080-exec-3] >> "Host: localhost:8080[\r][\n]"
2016-10-11 15:24:43,000 DEBUG [http-bio-8080-exec-3] >> "Connection: Keep-Alive[\r][\n]"
2016-10-11 15:24:43,000 DEBUG [http-bio-8080-exec-3] >> "User-Agent: Apache-HttpClient/4.2 (java 1.5)[\r][\n]"
2016-10-11 15:24:43,000 DEBUG [http-bio-8080-exec-3] >> "[\r][\n]"
2016-10-11 15:24:43,001 DEBUG [http-bio-8080-exec-3] >> POST /XtService/account/getbalance HTTP/1.1
2016-10-11 15:24:43,001 DEBUG [http-bio-8080-exec-3] >> Content-Length: 48
2016-10-11 15:24:43,001 DEBUG [http-bio-8080-exec-3] >> Content-Type: application/x-www-form-urlencoded; charset=UTF-8
2016-10-11 15:24:43,001 DEBUG [http-bio-8080-exec-3] >> Host: localhost:8080
2016-10-11 15:24:43,001 DEBUG [http-bio-8080-exec-3] >> Connection: Keep-Alive
2016-10-11 15:24:43,001 DEBUG [http-bio-8080-exec-3] >> User-Agent: Apache-HttpClient/4.2 (java 1.5)
2016-10-11 15:24:43,001 DEBUG [http-bio-8080-exec-3] >> "categoryid=2"
2016-10-11 15:24:43,256 DEBUG [http-bio-8080-exec-3] << "HTTP/1.1 200 OK[\r][\n]"
2016-10-11 15:24:43,259 DEBUG [http-bio-8080-exec-3] << "Server: Apache-Coyote/1.1[\r][\n]"
2016-10-11 15:24:43,260 DEBUG [http-bio-8080-exec-3] << "Pragma: no-cache[\r][\n]"
2016-10-11 15:24:43,260 DEBUG [http-bio-8080-exec-3] << "Cache-Control: no-cache[\r][\n]"
2016-10-11 15:24:43,260 DEBUG [http-bio-8080-exec-3] << "Expires: Thu, 01 Jan 1970 00:00:00 GMT[\r][\n]"
2016-10-11 15:24:43,261 DEBUG [http-bio-8080-exec-3] << "Content-Type: application/json;charset=utf-8[\r][\n]"
2016-10-11 15:24:43,261 DEBUG [http-bio-8080-exec-3] << "Content-Length: 83[\r][\n]"
2016-10-11 15:24:43,261 DEBUG [http-bio-8080-exec-3] << "Date: Tue, 11 Oct 2016 13:24:43 GMT[\r][\n]"
2016-10-11 15:24:43,261 DEBUG [http-bio-8080-exec-3] << "[\r][\n]"
2016-10-11 15:24:43,262 DEBUG [http-bio-8080-exec-3] Receiving response: HTTP/1.1 200 OK
2016-10-11 15:24:43,262 DEBUG [http-bio-8080-exec-3] << HTTP/1.1 200 OK
2016-10-11 15:24:43,263 DEBUG [http-bio-8080-exec-3] << Server: Apache-Coyote/1.1
2016-10-11 15:24:43,263 DEBUG [http-bio-8080-exec-3] << Pragma: no-cache
2016-10-11 15:24:43,263 DEBUG [http-bio-8080-exec-3] << Cache-Control: no-cache
2016-10-11 15:24:43,263 DEBUG [http-bio-8080-exec-3] << Expires: Thu, 01 Jan 1970 00:00:00 GMT
2016-10-11 15:24:43,263 DEBUG [http-bio-8080-exec-3] << Content-Type: application/json;charset=utf-8
2016-10-11 15:24:43,263 DEBUG [http-bio-8080-exec-3] << Content-Length: 83
2016-10-11 15:24:43,263 DEBUG [http-bio-8080-exec-3] << Date: Tue, 11 Oct 2016 13:24:43 GMT
2016-10-11 15:24:43,265 DEBUG [http-bio-8080-exec-3] Connection can be kept alive for 10000 MILLISECONDS
2016-10-11 15:24:43,274 DEBUG [http-bio-8080-exec-3] << "{"status":1,"data":{"RESERVED":569.81}}"
2016-10-11 15:24:43,275 DEBUG [http-bio-8080-exec-3] Connection [id: 0][route: {}->http://localhost:8080] can be kept alive for 10000 MILLISECONDS
2016-10-11 15:24:43,275 DEBUG [http-bio-8080-exec-3] Connection released: [id: 0][route: {}->http://localhost:8080][total kept alive: 1; route allocated: 1 of 200; total allocated: 1 of 200]

Answer 1

您可以看看：http://hc.apache.org/httpcomponents-client-ga/logging.html。

因此，HttpClient利用Commons包提供的日志接口。Commons为各种日志包提供了一个简单和通用的日志接口。通过使用公用日志记录，可以为各种不同的日志记录行为配置HttpClient。这意味着用户必须选择使用哪个日志框架。默认情况下，Commons支持以下日志记录框架： - Log4J - java.util.logging - SimpleLog (共用日志的内部)

您所观察到的绝大多数输出实际上是“连线”日志记录(即实际的HTTP交易)：

连线日志用于记录在执行HTTP请求时发送到服务器和从服务器发送的所有数据。连线日志使用org.apache.http.wire日志记录类别。此日志只能用于调试问题，因为它将产生大量日志数据。

简单地说:找到使用了哪个日志实现(例如log4J ?)，找到它的配置文件，并减少org.apache.http(.wire)类别。