Exception in thread "main" java.lang.StackOverflowError

Exception in thread "main" java.lang.StackOverflowError
at java.lang.StringCoding.deref(StringCoding.java:63)
at java.lang.StringCoding.encode(StringCoding.java:330)
at java.lang.String.getBytes(String.java:916)
at com.mysql.jdbc.StringUtils.getBytes(StringUtils.java:558)
at com.mysql.jdbc.StringUtils.getBytes(StringUtils.java:716)
at com.mysql.jdbc.Buffer.writeStringNoNull(Buffer.java:704)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2603)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2671)
at com.mysql.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:5024)
at com.alibaba.druid.pool.DruidPooledConnection.setAutoCommit(DruidPooledConnection.java:635)
at com.alibaba.druid.pool.DruidDataSource.getConnectionDirect(DruidDataSource.java:648)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:587)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:577)
at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:78)
at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111)
at org.springframework.jdbc.datasource.TransactionAwareDataSourceProxy$TransactionAwareInvocationHandler.invoke(TransactionAwareDataSourceProxy.java:224)

at $Proxy29.prepareStatement(Unknown Source)

  死循环造成的栈溢出
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