MySQL出现：com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago.
1、首先检查生产环境的机器是否ping的通和telnet的通数据库2、排查数据库连接的参数3、看数据量是否很大 参考：http://blog.csdn.net/sclxf/article/details/5775125 ...
python selenium.common.exceptions.InvalidSelectorException: Message: Locator Strategy 'css selector' is not supported for this session
pythonselenium.common.exceptions.InvalidSelectorException:Message:LocatorStrategy'cssselector'isnotsupportedforthissession或者 cannotimportname'webdriver'fro...
selenium.common.exceptions.UnexpectedAlertPresentException: Alert Text: None；Message: unexpected alert open: {Alert text : 您点击的频率过快！请稍后再试}
报错Traceback(mostrecentcalllast):File"C:/myFiles/code/cnki/cnki_1/core/knavi.py",line281,in<module>main()File"C:/myFiles/code/cnki/cnki_1/core/knavi.py",li...
bug之redis.exceptions.ResponseError
一、问题： 今天在运行django项目，使用django_redis连接内存数据库时，报了一个错误：(error)MISCONFRedisisconfiguredtosaveRDBsnapshots,butiscurrentlynotabletopersistondisk.Commandsthatmaymodifyt...
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed. 解决
ERROR-Nooperationsallowedafterconnectionclosed.2011-12-0711:36:09-ERROR-queryfailedorg.hibernate.exception.JDBCConnectionException:couldnotexecutequeryatorg.hib...
org.mockito.exceptions.misusing.CannotStubVoidMethodWithReturnValue
错误原因:mock的时候,不能mock重载的方法解决方法:直接mock它的父类的方法org.mockito.exceptions.misusing.CannotStubVoidMethodWithReturnValue:'flush'isa*voidmethod*andit*cannot*bestubbedwitha*...
org.mockito.exceptions.misusing.MissingMethodInvocationException: when() requires an argument which has to be 'a method call on a mock'
异常原因:1.mockito的jar包中缺少方法2.mock方法的时候,返回的是对象,而对象没有重写equals方法3.mock的实例方法调用方法错误解决方法:1.用powermock中的api解决问题,在类中添加:@RunWith(PowerMockRunner.class)2.如果是第二种情况,则需要重写返回对象的...
requests.exceptions.SSLError: hostname '127.0.0.1' doesn't match None
http://stackoverflow.com/questions/33429453/python-requests-ssl-hostname-doesnt-match-errorhttp://www.cnblogs.com/tk091/p/3671160.html...
错误：pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
上官瑾文 2018-07-2614:57:34 浏览45376python docker shell 镜像 Image pip read dockerfile ReadTimeoutError 在用...
Caused by: redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: connect timed out
问题：java连接不上redis。异常信息：Caused by: redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: connect time...
[Exceptions Spring 2]
2016-02-2314:06:27,416[http-bio-8080-exec-1]DEBUG[org.springframework.beans.factory.support.DefaultListableBeanFactory]-Returningcachedinstanceofsingletonbean's...