extractsqlexceptioninfo.java

此程序都是企业级 的数据库开发程序 全面揭示了JAVA对数据库的操作

import java.sql.*;

public class ExtractSQLExceptionInfo {
  public static void main(String[] args) {
    String url = "jdbc:cloudscape:Wrox4370.db";
    String driver = "COM.cloudscape.core.JDBCDriver";

    String username = "guest";
    String password = "guest";

    String theStatement = 
      "SELECT recordingid, recordingtitle, coverimagefilespec FROM rekordings";

    // intentional misspelling to generate exception


    try {
      Class.forName(driver);
      Connection connection = DriverManager.getConnection(url, username, 
              password);
      Statement queryRecordings = connection.createStatement();
      ResultSet theResults = queryRecordings.executeQuery(theStatement);
      queryRecordings.close();
    } catch (ClassNotFoundException cnfe) {
      System.err.println(cnfe);
    } catch (SQLException sqle) {
      String sqlMessage = sqle.getMessage();
      String sqlState = sqle.getSQLState();
      int vendorCode = sqle.getErrorCode();
      System.err.println("Exception occurred:");
      System.err.println("Message: " + sqlMessage);
      System.err.println("SQL state: " + sqlState);
      System.err.println("Vendor code: " + vendorCode 
                         + "\n----------------");
    } 
  } 
}