Question

java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection

严重: Could not get a databaseId from dataSource
java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:439)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
Eclipse控制台报错的，PL/SQL deverloper可以正常连上本机oracle

Answer 1

在Eclipse上自己建立的数据库连接没有打开。直接编码实现不就得了。

Answer 2

Eclipse没有连到数据库，看不出哪里错了，把图片粘出来