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我尝试在 Netbeans 7.0 中连接 Postgres postgresql-9.1-902.jdbc4 数据库，但在 Java 中出现此错误：

jul 19, 2012 9:35:02 AM databasedesktop.DatabaseDesktopApp startup
Grave: null
org.postgresql.util.PSQLException: El intento de conexión falló.
    at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:150)
    at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:64)
    at org.postgresql.jdbc2.AbstractJdbc2Connection.<init>(AbstractJdbc2Connection.java:123)
    at org.postgresql.jdbc3.AbstractJdbc3Connection.<init>(AbstractJdbc3Connection.java:28)
    at org.postgresql.jdbc3g.AbstractJdbc3gConnection.<init>(AbstractJdbc3gConnection.java:20)
    at org.postgresql.jdbc4.AbstractJdbc4Connection.<init>(AbstractJdbc4Connection.java:30)
    at org.postgresql.jdbc4.Jdbc4Connection.<init>(Jdbc4Connection.java:22)
    at org.postgresql.Driver.makeConnection(Driver.java:391)
    at org.postgresql.Driver.connect(Driver.java:265)
    at java.sql.DriverManager.getConnection(DriverManager.java:579)
    at java.sql.DriverManager.getConnection(DriverManager.java:221)
    at databasedesktop.DatabaseDesktop.initDatabasePostgre(DatabaseDesktop.java:45)
    at databasedesktop.DatabaseDesktop.<init>(DatabaseDesktop.java:56)
    at databasedesktop.DatabaseDesktopApp.startup(DatabaseDesktopApp.java:22)
    at org.jdesktop.application.Application$1.run(Application.java:171)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:705)
    at java.awt.EventQueue.access$000(EventQueue.java:101)
    at java.awt.EventQueue$3.run(EventQueue.java:666)
    at java.awt.EventQueue$3.run(EventQueue.java:664)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:675)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
Caused by: java.net.SocketException: Can't connect to SOCKS proxy:No route to host: connect
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:427)
    at java.net.Socket.connect(Socket.java:578)
    at java.net.Socket.connect(Socket.java:527)
    at java.net.Socket.<init>(Socket.java:424)
    at java.net.Socket.<init>(Socket.java:207)
    at org.postgresql.core.PGStream.<init>(PGStream.java:60)
    at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:74)
    ... 28 more
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1 回答 1

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您似乎正在尝试使用SOCKS未运行或无法访问的代理。

Caused by: java.net.SocketException: Can't connect to SOCKS proxy:No route to host: connect

确保代理实际正在运行，并且可以访问 PostgreSQL 服务器。尝试使用psql通过您的 SOCKS 代理连接到 PostgreSQL 服务器以验证是否有效 - 假设您打算通过代理连接。

您是否设置了socksProxyHost和socksProxyPort系统属性，也许是通过 java 命令行？请参阅有关代理的 Java 文档。

您是否为 JDBC 连接指定代理？

于 2012-07-20T02:26:22.567 回答