jdbconnection.java

来自「jsp技术 基于struts框架的新闻发布系统」· Java 代码 · 共 64 行

package com.victor.tool;

import java.sql.SQLException;
import java.sql.Statement;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Connection;

public class JDBConnection {
  //JDBC类
 String sd = "sun.jdbc.odbc.JdbcOdbcDriver";
 String sc = "jdbc:odbc:db_news";
 private String db_user="sa";
 private String db_pwd="";
 int i;
 ResultSet rs = null;
 Connection conect = null;
 public JDBConnection() {
     try {
     Class.forName(sd);
   }
   catch (java.lang.ClassNotFoundException e) {
     System.err.println(e.getMessage());   
   }
 }

 public ResultSet executeQuery(String sql) {   
   try {
     conect = DriverManager.getConnection(sc,db_user,db_pwd);
     Statement stmt = conect.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
                                             ResultSet.CONCUR_READ_ONLY);
     rs = stmt.executeQuery(sql);
     
   }
   catch (SQLException ex) {
     System.err.println(ex.getMessage());
   }
   return rs;
 }

 public int executeUpdate(String sql) {
   int result = 0;
   try {
     conect = DriverManager.getConnection(sc,db_user,db_pwd);
     Statement stmt = conect.createStatement();
     result = stmt.executeUpdate(sql);
   }
   catch (SQLException er) {
     System.err.println(er.getMessage());
   }
   return result;
 }

 public void close() {
   try {
     if (conect != null) {
       conect.close();
     }
   }
   catch (Exception e) {
     System.out.println(e);
   }
 }
}