JDBC连接MYSQL

• JDBC连接图

• 加载mySQL驱动包：

工程名上点击右键-Properties(属性)-Java Build Path(Java构建路径)-Libraries()-Add External JARs(添加JAR)-找到一个mysql-connector-java-5.0.7-bin.jar添加上就行了

在myEclipse（内部启动Tomcat）中调试程序过程中爆出java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver错误。经过搜索得知,新建的项目，虽然在Tomcat的common/lib文件夹中，项目的WEB-INF/lib中都有mysql-connector-java-5.0.3-bin.jar，但是在Eclipse的这个工程中没有添加。　　so,解决办法是工程名上点击右键-Properties(属性)-Java Build Path(Java构建路径)-Libraries()-Add External JARs(添加JAR)-找到一个mysql-connector-java-5.0.7-bin.jar添加上就行了．

 

• /**
   * 
   */
  package com.lh.mysql;
  import java.sql.Connection;
  import java.sql.DriverManager;
  import java.sql.PreparedStatement;
  import java.sql.ResultSet;
  import java.sql.SQLException;
  
  /**
   * @author huanli2
   *
   */
  public class test {
      private static final String DBDRIVER = "org.gjt.mm.mysql.Driver";
      private static final String DBURL = "jdbc:mysql://localhost:3306/mydb";
      private static final String DBUSER = "root";
      private static final String DBPASSWORD = "root";
      private static Connection conn = null;
      private static PreparedStatement pstmt = null;
      
      public static void main(String[] args){
          try{
              Class.forName(DBDRIVER);//加载驱动程序
              
          }catch(Exception e){
              e.printStackTrace();
          }
          try {
              conn = DriverManager.getConnection(DBURL,DBUSER,DBPASSWORD);//获取连接
          } catch (SQLException e) {
              // TODO Auto-generated catch block
              e.printStackTrace();
          }
          
          String sql = "SELECT name FROM info";
          try {
              pstmt=conn.prepareStatement(sql);
          } catch (SQLException e) {
              // TODO Auto-generated catch block
              e.printStackTrace();
          }
          
          try {
              ResultSet rs = pstmt.executeQuery();
              while(rs.next()){
                  System.out.println(rs.getString(1));
              }
          } catch (SQLException e) {
              // TODO Auto-generated catch block
              e.printStackTrace();
          }
      }
  }