java.lang.IllegalStateException: Invalid use of BasicClientConnManager: connection still allocated.

java.lang.IllegalStateException: Invalid use of BasicClientConnManager: connection still allocated.
Make sure to release the connection before allocating another one.

java.lang.IllegalStateException: Invalid use of BasicClientConnManager: connection still allocated.
Make sure to release the connection before allocating another one.
at org.apache.http.impl.conn.BasicClientConnectionManager.getConnection(BasicClientConnectionManager.java:162)
at org.apache.http.impl.conn.BasicClientConnectionManager$1.getConnection(BasicClientConnectionManager.java:139)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:456)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784)
at com.glodon.cloudt.rest.client.RestServiceClientSupport.sendRequest(RestServiceClientSupport.java:205)
at com.glodon.cloudt.rest.client.RestServiceClientSupport.get(RestServiceClientSupport.java:145)
at com.glodon.gys.wantai.service.impl.BillDataSync.index(BillDataSync.java:41)
at com.glodon.gys.wantai.config.ApplicationDaemonService$$Lambda$14/269145726.run(Unknown Source)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset$$$capture(FutureTask.java:308)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

=====百度==

org.apache.http.client.HttpClient使用中，报了以下的异常：
Invalid use of SingleClientConnManager: connection still allocated.
Make sure to release the connection before allocating another one.
此问题出现原因是并发调用同一个httpclient去请求数据。在上一个post|get请求尚未结束时，又启新的线程再次使用该httpclient请求数据。
目前我的解决方法是用synchronized关键字同步httpclient请求数据的操作。但这个解决方案不能解决并发使用同一个httpClient请求数据的需求，本人对httpclient不精通，有更好解决方法的大神，请不吝赐教！
---------------------
作者：滴水成冰-
来源：CSDN
原文：https://blog.csdn.net/zi413293813/article/details/42916097
版权声明：本文为博主原创文章，转载请附上博文链接！