Question

在我的数据库连接中，失败连接的堆栈跟踪总是打印到终端上，是否可以将其关闭？

try {
    Class.forName("org.postgresql.Driver");
    this.connection = DriverManager.getConnection("jdbc:postgresql://" + getHost() + ":" + getPort() + "/" + getDatabase(), getUser(), getPassword());
} catch (Exception e) {
    // deal with exception
}

我当前关闭了本地数据库，因此它将始终超时并尝试捕获异常。

示例输出如下：

    Sep 21, 2018 2:07:56 PM org.postgresql.Driver connect
SEVERE: Connection error: 
org.postgresql.util.PSQLException: The connection attempt failed.
    at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:257)
    at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49)
    at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:195)
    at org.postgresql.Driver.makeConnection(Driver.java:452)
    at org.postgresql.Driver.connect(Driver.java:254)
    at java.sql.DriverManager.getConnection(DriverManager.java:664)
    at java.sql.DriverManager.getConnection(DriverManager.java:247)
    at database.psql.PsqlDatabase.connect(PsqlDatabase.java:41)
    at database.DatabaseFactory.getDatabase(DatabaseFactory.java:15)
    at api.acme.AcmeApi.queuePlacementNotifications(AcmeApi.java:101)
    at poller.AcmePoller.run(AcmePoller.java:28)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.SocketTimeoutException: connect timed out
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:589)
    at org.postgresql.core.PGStream.<init>(PGStream.java:69)
    at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:156)
    ... 11 more

Answer 1

这是pgjdbc的问题，在类 org.postgresql.core.v3.ConnectionFactoryImpl 中已在this commit中进行了修复。

此修复程序已在版本42.2.3上发布。

因此，如果您可以更新pgjdbc库，则仅当Logger配置为FINE级别时，应用程序才会显示日志。

防止堆栈跟踪失败的连接

1 个答案: