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Java初学者笔记:JDBC连接Oracle数据库

 2009-11-18 21:02:44 来源:WEB开发网   
核心提示:view plaincopy to clipboardPRint?/** * JDBCTest.java * 编译脚本cd\cd D:\JavaHome\tempd:javac JDBCTest.javajavaJDBCTestpause*/import java.sql.*; // WindowsXP使用JDBC连接
view plaincopy to clipboardPRint?
/** 
* JDBCTest.java 
* 编译脚本 
cd\ 
cd D:\JavaHome\temp 
d: 
javac JDBCTest.java 
java JDBCTest 
pause 
*/ 
import java.sql.*;  
// WindowsXP使用JDBC连接Oracle10g数据库  
// Oracle10g 客户端安装在: "D:\OraClient10g"  
public class JDBCTest {  
  public static void main(String args[ ]) {  
    Connection connection = null;  
    Statement statement = null;  
      
    try {  
      // Load the JDBC Driver  
      // 必须在系统环境变量 CLASSPATH 添加 "D:\OraClient10g\jdbc\lib\classes12.zip"  
      String DBDRIVER = "oracle.jdbc.driver.OracleDriver";  
      // 找到 "D:\OraClient10g\NETWORK\ADMIN\tnsnames.ora" 文件, 将 (DESCRIPTION=...)拷贝到下面  
      String URL = "jdbc:oracle:thin:@(DESCRIPTION =(ADDRESS_LIST =(ADDRESS = (PROTOCOL = TCP)(HOST = mine)(PORT = 1521)) )(CONNECT_DATA =(SID = cheung)(SERVER = DEDICATED)))";  
      Class.forName(DBDRIVER).newInstance();  
    
      // Connect to the database  
      connection = DriverManager.getConnection(URL, "scott", "tiger");  
      // Obtain a statement object  
      statement = connection.createStatement();  
        
      // Execute the SQL  
      String sql = "select * from JDBC_TEST";  
      ResultSet rs = statement.executeQuery(sql);  
      while (rs.next())  
      {  
        System.out.println(rs.getString(1)); // 列的索引: 1-based  
      }  
      rs.close();  
    }  
    // Don't try this at home, catch SQLException and all others  
    catch( Exception e ) {  
      e.printStackTrace();  
    }  
    finally {  
      // Time to close everthing up.  
      if( statement != null ) {  
        try {  
          statement.close();  
        }  
        catch( SQLException e ){  
        } // nothing we can do  
      }  
      
      if( connection != null ) {  
        try {  
          connection.close();  
        }  
        catch( SQLException e ){  
        } // nothing we can do  
      }  
    }  
  }  
} 

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