INFO | jvm 1 | 2016/08/25 15:17:01 | 16-08-25 15:17:01 DEBUG pool-1-thread-371dao.ITaskDao.callProcedure: ==> Preparing: call sp_one( ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? ); INFO | jvm 1 | 2016/08/25 15:17:01 | 16-08-25 15:17:01 DEBUG pool-1-thread-…

1 详细异常 2019-10-11 10:33:55,865 INFO main:com.cloudera.server.cmf.Main: ================================================================================ 2019-10-11 10:33:55,884 INFO main:com.cloudera.server.cmf.Main: Starting SCM Server. JVM Args: [-D…

总结写在前面, 总结: 当Java通过jdbc链接mysql插入中文时,要保证程序可以正常执行,而且插入的中文不会乱码, mysql服务器端,对数据表(不是数据库)的编码设置,要保证是支持中文的,例如gbk, gb2312, utf-8 jdbc的连接配置,要开启useUnicode=true,并且要设置一个支持中文的编码,不需要跟mysql表的编码保持一致,只需要支持中文就行.例如characterEncoding=utf8 本身的Java文件的编码需要支持中文 ===============…

1.错误描述 INFO:2015-05-01 14:20:44[main] - Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> nu…

1.错误描述 2014-7-12 21:06:05 com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource getPoolManager 信息: Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000,…

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unk…

数据库 没有开启  连接失败 org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseco…

前段时间,接手一个项目使用的是原始的jdbc作为数据库的访问,发布到服务器上在运行了一段时间之后总是会出现无法访问的情况,登录到服务器,查看tomcat日志发现总是报如下的错误. Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: "Too man…

先说结论: 因为在表设计中有一个商品描述字段被设置为desc,但desc是mysql中的关键字,如select id,name,desc,price from product;这条sql语句在查询时的sql语句解析会和期望的不一样,导致出现问题.因为平时在写java代码的时候很自然的会将描述变量设置为desc,在设计表字段时也没有多想,忘记和忽略了desc为mysql中的关键字,酿成此问题. 排查思路: 一开始怀疑是因为sql过长,删了一部分,成功了,加上又失败了,而且一直提示在price那里只…

1.错误描写叙述 2014-7-12 21:06:05 com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource getPoolManager 信息: Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 100…