java调用mysql存储过程例子

获取数据库连接的类

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
 /**
*获取数据库连接的类
*/
class ConnectDb {

public static Connection getConnection(){
  Connection conn = null;
  PreparedStatement preparedstatement = null;
  try {
   Class.forName("org.gjt.mm.mysql.Driver").newInstance();
   String dbname = "test";
   String url ="jdbc:mysql://localhost/"+dbname+"?user=root&password=root&useUnicode=true&characterEncoding=8859_1" ;
   conn= DriverManager.getConnection(url);
  } catch (Exception e) {
   e.printStackTrace();
  }
  return conn;
}
 
} 

import java.sql.*;
 
 /**
  * 调用带有输入参数的存储过程，三种情况例子
  */
public class ProcedureTest {
 
 public static void main(String[] args) {
  //callIn(111);
  //callOut();
  callResult();
 }
 
 /**
  * 1.调用带有输入参数的存储过程
  * @param in     stored procedure input parameter value
  */
 public static void callIn(int in){
  //获取连接
  Connection conn = ConnectDb.getConnection();
  CallableStatement cs = null;
  try {
   //可以直接传入参数
   //cs = conn.prepareCall("{call sp1(1)}");
   
   //也可以用问号代替
   cs = conn.prepareCall("{call sp1(?)}");
   //设置第一个输入参数的值为110
   cs.setInt(1, in);
   
   cs.execute();
  } catch (Exception e) {
   e.printStackTrace();
  } finally {
   try {
    if(cs != null){
     cs.close();
    }
    if(conn != null){
     conn.close();
    }
   } catch (Exception ex) {
    ex.printStackTrace();
   }
  }
  
 }
 
 /**
  * 2.调用带有输出参数的存储过程
  *
  */
 public static void callOut() {
  Connection conn = ConnectDb.getConnection();
  CallableStatement cs = null;
  try {
   cs = conn.prepareCall("{call sp2(?)}");
   //第一个参数的类型为Int
   cs.registerOutParameter(1, Types.INTEGER);
   cs.execute();
   
   //得到第一个值
   int i = cs.getInt(1);
   System.out.println(i);
  } catch (Exception e) {
   e.printStackTrace();
  } finally {
   try {
    if(cs != null){
     cs.close();
    }
    if(conn != null){
     conn.close();
    }
   } catch (Exception ex) {
    ex.printStackTrace();
   }
  }
 }
 
 /**
  * 3.调用输出结果集的存储过程
  */
 public static void callResult(){
  Connection conn = ConnectDb.getConnection();
  CallableStatement cs = null;
  ResultSet rs =  null;
  try {
   cs = conn.prepareCall("{call sp6()}");
   rs = cs.executeQuery();
   
   //循环输出结果
   while(rs.next()){
    System.out.println(rs.getString(1));
   }
  } catch (Exception e) {
   e.printStackTrace();
  } finally {
   try {
    if(rs != null){
     rs.close();
    }
    if(cs != null){
     cs.close();
    }
    if(conn != null){
     conn.close();
    }
   } catch (Exception ex) {
    ex.printStackTrace();
   }
  }
 }
 
}