如何将java与oracl数据库进行连接-优快云博客

一、在工程下面要将数据库包添加到工程下面。步骤如下：在工程上右击——properties——java build path——add library——user library——next——这里如果已经有了，直接选择，否则，new——输入名字（随意）——选择刚创建的名字，——add jars——odbc.jar14包

二、Class.forName("oracle.jdbc.driver.OracleDriver");//加载
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@172.16.33.251:1521:orcl", "qbzhpt", "qbzhpt");//连接

三、例子

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

public class DataBaseTest {
public Connection getCc() throws ClassNotFoundException, SQLException{
  Class.forName("oracle.jdbc.driver.OracleDriver");
  Connection  conn = DriverManager.getConnection("jdbc:oracle:thin:@172.16.33.251:1521:orcl", "qbzhpt", "qbzhpt");
  return conn;
}

public void query(int type){
  Connection  conn =  null;
  Statement  st = null;
  ResultSet rs = null;
  try {
   if(type ==1 ){
    System.out.println("传经来值为："+type+";无权限查询数据");
   }else{
    conn = getCc();
    st = conn.createStatement();
    rs = st.executeQuery("select * from qbzhpt.t_ry_czrk where rownum <= 10");
    while(rs.next()){
     System.out.println("ID:"+rs.getString(1)+";姓名:"+rs.getString("XM"));
    }
   }
  } catch (ClassNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (SQLException e) {
   e.printStackTrace();
  }finally{
    try {
     if(null != conn){
      conn.close();
     }
     if(null != st){
      st.close();
     }
     if(null != rs){
      rs.close();
     }
    } catch (SQLException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }

  }

}
public static void main(String[] args) {
  DataBaseTest dbt = new DataBaseTest();
  dbt.query(2);
}
}