org.apache.commons.dbcp.BasicDataSource连接数据库时出现的问题，急！！

[lixueailiyiyang]

import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.Statement;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.apache.commons.dbcp.BasicDataSource;
public class BasicDataSourceExample {

public static void main(String[] args) {
ystem.out.println("Setting up data source.");
DataSource dataSource = setupDataSource(args[0]);
System.out.println("Done.");
Connection conn = null;
Statement stmt = null;
ResultSet rset = null;

try {
System.out.println("Creating connection.");
conn = dataSource.getConnection();
System.out.println("Creating statement.");
stmt = conn.createStatement();
System.out.println("Executing statement.");
rset = stmt.executeQuery(args[1]);
System.out.println("Results:");
int numcols = rset.getMetaData().getColumnCount();
while(rset.next()) {
for(int i=1;i<=numcols;i++) {
System.out.print("\t" + rset.getString(i));
}
System.out.println("");
}
} catch(SQLException e) {
e.printStackTrace();
} finally {
try { rset.close(); } catch(Exception e) { }
try { stmt.close(); } catch(Exception e) { }
try { conn.close(); } catch(Exception e) { }
}
}

public static DataSource setupDataSource(String connectURI) {
BasicDataSource ds = new BasicDataSource();
ds.setDriverClassName("oracle.jdbc.driver.OracleDriver");
ds.setUsername("scott");
ds.setPassword("tiger");
ds.setUrl(connectURI);
return ds;
}

public static void printDataSourceStats(DataSource ds) throws SQLException {
BasicDataSource bds = (BasicDataSource) ds;
System.out.println("NumActive: " + bds.getNumActive());
System.out.println("NumIdle: " + bds.getNumIdle());
}

public static void shutdownDataSource(DataSource ds) throws SQLException {
BasicDataSource bds = (BasicDataSource) ds;
bds.close();
}
}
给的参数如下：
jdbc:oracle:thin:scott/tiger@192.168.211.65:1521:LYY,SELECT * FROM emp

在运行以后出现了下面的异常：
org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory, cause:
java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:333)
at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:404)
at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:468)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:314)
at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:82)
at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:300)
at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:838)
at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:821)
at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:518)
at BasicDataSourceExample.main(BasicDataSourceExample.java:89)

[childman]

是Oracle连接问题吧，检查下你的数据库连接字串是否正确。

[lixueailiyiyang]

现在问题有变了，第一个错误变成了下面的情况了。
java.sql.SQLException: Io 异常: Connection refused(DESCRIPTION=(TMP=)(VSNNUM=153092352)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505)(EMFI=4))))