jdbc MySQLTransientConnectionException 异常与生产中的特定查询

Question

我有一个 Spring+hibernate+mysql+jstl 架构，运行在 linux CENTOS 生产环境中。

我添加了一个石英（调度器）模块，我的朋友石英每 10 秒检查一次文件夹中的新文件，如果找到，则将文件加载并加载到数据库中并移动文件。这些程序可以在我的 MacBook 中找到，但是在生产中我在尝试将数据加载到数据库时遇到 jdbc 错误，但与数据库相关的所有其他内容都可以正常工作。

我使用 JAVA 将文件加载到数据库中，例如：

String queryString = "LOAD DATA INFILE  '"+path+"' INTO TABLE  `branch_to_product` FIELDS TERMINATED BY  ';' ENCLOSED BY  '\"' ESCAPED BY  '\\\\' LINES TERMINATED BY  '\\n'(\n" +
            "`product_model` ,  `branch_to_product_monthly_rotation` ,  `branch_to_product_quantity`\n" +
            ")";

    Query query = getSession().createSQLQuery(queryString);

如果我从 phpmyadmin 运行 sql，它也会运行 find。

这些是我在日志中看到的错误：

[Loaded com.mysql.jdbc.SQLError from file:/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/mysql-connector-java-5.1.13-bin.jar]  
[Loaded com.mysql.jdbc.NotImplemented from file:/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/mysql-connector-java-5.1.13-bin.jar]  
[Loaded com.mysql.jdbc.exceptions.MySQLTransientConnectionException from file:/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/mysql-connector-java-5.1.13-bin.jar]  
[Loaded com.mysql.jdbc.exceptions.MySQLNonTransientConnectionException from file:/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/mysql-connector-java-5.1.13-bin.jar]  
[Loaded com.mysql.jdbc.exceptions.MySQLDataException from file:/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/mysql-connector-java-5.1.13-bin.jar]  
[Loaded com.mysql.jdbc.exceptions.MySQLIntegrityConstraintViolationException from file:/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/mysql-connector-java-5.1.13-bin.jar]  
[Loaded com.mysql.jdbc.exceptions.MySQLSyntaxErrorException from file:/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/mysql-connector-java-5.1.13-bin.jar]  
[Loaded com.mysql.jdbc.exceptions.DeadlockTimeoutRollbackMarker from file:/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/mysql-connector-java-5.1.13-bin.jar]  
[Loaded com.mysql.jdbc.exceptions.MySQLTransactionRollbackException from file:/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/mysql-connector-java-5.1.13-bin.jar]  
[Loaded java.sql.SQLRecoverableException from /usr/local/jdk1.6.0_22/jre/lib/rt.jar]
[Loaded com.mysql.jdbc.exceptions.jdbc4.CommunicationsException from file:/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/mysql-connector-java-5.1.13-bin.jar]  
[Loaded org.apache.tomcat.dbcp.pool.PoolUtils from file:/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/naming-factory-dbcp.jar]  
[Loaded org.apache.tomcat.dbcp.pool.KeyedObjectPool from file:/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/naming-factory-dbcp.jar]  
[Loaded org.apache.tomcat.dbcp.pool.PoolUtils$KeyedObjectPoolMinIdleTimerTask from file:/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/naming-factory-dbcp.jar]  
[Loaded org.apache.tomcat.dbcp.pool.PoolUtils$ObjectPoolMinIdleTimerTask from file:/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/naming-factory-dbcp.jar]  
[Loaded sun.net.ConnectionResetException from /usr/local/jdk1.6.0_22/jre/lib/rt.jar]  
[Loaded org.hibernate.action.BulkOperationCleanupAction from file:/usr/local/jakarta/apache-tomcat-5.5.33/shared/lib/hibernate.jar]  
0
[Loaded org.hibernate.exception.JDBCExceptionHelper from file:/usr/local/jakarta/apache-tomcat-5.5.33/shared/lib/hibernate.jar]  
09:19:25,633 ERROR JDBCExceptionReporter:72 - Access denied for user 'jardinde_fp'@'localhost' (using password: YES)  
09:19:25,633 ERROR JDBCExceptionReporter:72 - Access denied for user 'jardinde_fp'@'localhost' (using password: YES)  

Answer 1

您有一个简单的身份验证错误：

错误 JDBCExceptionReporter:72 - 用户 'jardinde_fp'@'localhost' 的访问被拒绝（使用密码：YES）

确保服务器允许应用程序的凭据。

您发布的日志中的这些行仅显示 JVM 从它们的 JAR 加载这些类文件，它们不是错误或真正的问题（JVM 在它第一次找到/执行引用它们的代码时加载类，并且它必须走完整的参考图）：

[从文件加载 com.mysql.jdbc.SQLError:/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/mysql-connector-java-5.1.13-bin.jar]
[从文件加载com.mysql.jdbc.NotImplemented：/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/mysql-connector-java-5.1.13-bin.jar]
[从文件加载com.mysql.jdbc.exceptions.MySQLTransientConnectionException：/usr/local/jakarta/apache-tomcat-5.5.33/common/lib/mysql-connector-java-5.1.13-bin.jar]

Answer 2

在查询中添加了 LOCAL 一词并起作用了！

String queryString = "LOAD DATA LOCAL INFILE  '"+path+"' INTO TABLE  `branch_to_product` FIELDS TERMINATED BY  ';' ENCLOSED BY  '\"' ESCAPED BY  '\\\\' LINES TERMINATED BY  '\\n'(\n" +
            "`product_model` ,  `branch_to_product_monthly_rotation` ,  `branch_to_product_quantity`\n" +
            ")";

    Query query = getSession().createSQLQuery(queryString);