通过分析一个问题,我试图理解这个奇怪的堆栈跟踪:
Thread 3049: (state = BLOCKED)
- java.lang.Object.wait(long) @bci=0 (Compiled frame; information may be imprecise)
- java.io.PipedInputStream.read() @bci=142, line=326 (Compiled frame)
- java.io.PipedInputStream.read(byte[], int, int) @bci=43, line=377 (Compiled frame)
- org.apache.http.entity.InputStreamEntity.writeTo(java.io.OutputStream) @bci=75, line=140 (Compiled frame)
- org.apache.http.impl.execchain.RequestEntityProxy.writeTo(java.io.OutputStream) @bci=10, line=123 (Compiled frame)
- org.apache.http.impl.DefaultBHttpClientConnection.sendRequestEntity(org.apache.http.HttpEntityEnclosingRequest) @bci=31, line=156 (Compiled frame)
- org.apache.http.impl.conn.CPoolProxy.sendRequestEntity(org.apache.http.HttpEntityEnclosingRequest) @bci=5, line=162 (Compiled frame)
- org.apache.http.protocol.HttpRequestExecutor.doSendRequest(org.apache.http.HttpRequest, org.apache.http.HttpClientConnection, org.apache.http.protocol.HttpContext) @bci=223, line=238 (Compiled frame)
- org.apache.http.protocol.HttpRequestExecutor.execute(org.apache.http.HttpRequest, org.apache.http.HttpClientConnection, org.apache.http.protocol.HttpContext) @bci=25, line=123 (Compiled frame)
- org.apache.http.impl.execchain.MainClientExec.execute(org.apache.http.conn.routing.HttpRoute, org.apache.http.client.methods.HttpRequestWrapper, org.apache.http.client.protocol.HttpClientContext, org.apache.http.client.methods.HttpExecutionAware) @bci=714, line=271 (Compiled frame)
- org.apache.http.impl.execchain.ProtocolExec.execute(org.apache.http.conn.routing.HttpRoute, …