JAVA自动操作0racle数据库转mysql数据库

1.要注意数据编码，在建表时就应该设置好默认编码，我这里是UTF-8；

CREATE TABLE `CODE_ZYB` (
  `uid` int(64) NOT NULL AUTO_INCREMENT,
  `XSH` varchar(5) DEFAULT NULL,
  `ZYH` varchar(8) DEFAULT NULL,
  `XKMLH` varchar(2) DEFAULT NULL,
  `ZYM` varchar(40) DEFAULT NULL,
  `YWZYM` varchar(80) DEFAULT NULL,
  `BZ` varchar(255) DEFAULT NULL,
  `XJZYH` varchar(8) DEFAULT NULL,
  `XJZYM` varchar(40) DEFAULT NULL,
  PRIMARY KEY (`uid`)
) engine=myisam default charset=utf8;

注意（如果是GBK就把下面的utf8改为gbk）：

engine=myisam default charset=utf8;

下面是java的代码：

package jw;
import java.io.UnsupportedEncodingException;
import java.sql.*;


public class Jw1 {

 
    public static void main(String[] args) throws UnsupportedEncodingException {
        // TODO code application logic here
         String url = "jdbc:oracle:thin:@host:1521:test";     //test为自己数据库的名字，1521为端口
   String username = "name";
   String password = "password";
  
   String driver = "oracle.jdbc.driver.OracleDriver";

   try {
    Class.forName(driver);           //加载驱动

    Connection conn = DriverManager.getConnection(url, username,
      password);                         //连接数据库

    PreparedStatement pstmt = conn.prepareStatement("SELECT * FROM JW.CODE_ZYB"); // 预处理命令，比Statement 好一些
    ResultSet rs = pstmt.executeQuery();
    Connection con = DriverManager
		.getConnection("jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF8"
                                ,"user", "pass"); //mysql数据库连接并且设置为UTF8默认连接；
     PreparedStatement sta = con.prepareStatement("set names utf8");                //连接后转为UTF8编码
                 sta.executeQuery();                                                //执行sql；
   PreparedStatement st = con.prepareStatement("TRUNCATE TABLE CODE_ZYB");                //执行重复插入数据
          st.executeUpdate();                                                //插入，删除，增加使用executeupdate；
     
                
        
    while(rs.next())
    {
        //System.out.println(rs.getString(1));
         String sql = "INSERT INTO CODE_ZYB(`XSH`,`ZYH`,`XKMLH`"
                 + ",`ZYM`,`YWZYM`,`BZ`,`XJZYH`,`XJZYM`)"
                  + "VALUES (?,?,?,?,?,?,?,?)";
        sta = con.prepareStatement(sql); 
      
        for(int i=1;i<9;i++){
         
          String s = rs.getString(i);
          if (s == null || s.isEmpty() )   //处理oracle过来的为空的数据
              s = "";
          else
              s = new String(s.getBytes("UTF-8"), "UTF-8"); //数据编码转换
   
          System.out.println(s+","+i);
         
          
         
         sta.setString(i,s); //占位符处理；
        
        }
        sta.execute();
         sta.close();  //关闭sql
        
        
    }
    pstmt.close();                   //Oracle sql查询关闭
    conn.close();                    //Oracle 连接关闭
    con.close();                     //Mysql 连接关闭       

   } catch (ClassNotFoundException e) {
   } catch (SQLException e) {
       System.out.print(e.getMessage());
   }
   
   
   System.out.println("-------- MySQL JDBC Connection Testing ------------");
 
	try {
		Class.forName("com.mysql.jdbc.Driver");
	} catch (ClassNotFoundException e) {
		System.out.println("Where is your MySQL JDBC Driver?");
		return;
	}
 
	System.out.println("MySQL JDBC Driver Registered!");
	Connection connection = null;
 
	try {
		connection = DriverManager
		.getConnection("jdbc:mysql://localhost:3306/test","user", "pass");
                connection.close();
 
	} catch (SQLException e) {
		System.out.println("Connection Failed! Check output console");
		return;
	}
 
	if (connection != null) {
		System.out.println("You made it, take control your database now!");
	} else {
		System.out.println("Failed to make connection!");
	}
   
    }
}