jdbc请求超时
我只是查询整张表的数据，不过这张表数据有将近10W条 执行sql语句后就抛下面的这个错误com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 1,641 milliseconds ago. The last packet sent successfully to the server was 29,094 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1116)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3102)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2991)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3532)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:943)
at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1441)
at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.java:2936)
at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:477)
at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate(MysqlIO.java:2631)
at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:1800)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2221)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2618)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2568)
at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1557)
at Dao.DBService.executeQuery(DBService.java:275)
at Dao.Impl.Uploading.UploadingEpcDaoImpl.SearchMainListByStoreID(UploadingEpcDaoImpl.java:35)
at Dao.Impl.Uploading.UploadingEpcDaoImpl.main(UploadingEpcDaoImpl.java:40)
Caused by: java.io.EOFException: Can not read response from server. Expected to read 576 bytes, read 150 bytes before connection was unexpectedly lost.
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2552)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3058)
... 15 more
求解决方案 --------------------编程问答-------------------- The last packet successfully received from the server was 1,641 milliseconds ago. The last packet sent successfully to the server was 29,094 milliseconds ago. is longer than the server configured value of 'wait_timeout'.
超时了，你看看你的sql是否正确..........
补充：Java , Java EE
