Jdbc调用存储过程

jdbc调用存储过程:

经常使用的4种:

                     1. 返回结果集的proc

                     2. 输出参数

                     3.使用带有返回状态的存储过程 

                     4.受影响行数

 

以下为mysql的存储过程 sqlServer同理

案例1: 返回结果集的proc

存储过程:

drop procedure if exists proc_selectEmployee;

create procedure proc_selectEmployee(in carid varchar(20))

begin

    select * from employee where cardID = carid;

end

 

call proc_selectEmployee('SZ65380');

 

import java.sql.*;import java.sql.CallableStatement;/** * * 简单的jdbc调用存储过程 只有输入参数 返回单个结果集 * */public class GeTest1 {public static void main(String[] args) {Connection connection = null;//用于执行 SQL 存储过程的接口CallableStatement statement = null;ResultSet resultSet = null;try {Class.forName("com.mysql.jdbc.Driver");String url = "jdbc:mysql://localhost:3306/test";String user = "root";String password = "123";connection = DriverManager.getConnection(url, user, password);String sql = "call proc_selectEmployee(?)";//调用存储过程statement = connection.prepareCall(sql);statement.setString(1, "SZ65380");resultSet = statement.executeQuery();if (resultSet.next()) {System.out.println(resultSet.getString("address"));}} catch (ClassNotFoundException e) {e.printStackTrace();} catch (SQLException e) {e.printStackTrace();} catch (Exception e) {e.printStackTrace();} finally {try {if (resultSet != null) {resultSet.close();}if (statement != null) {statement.close();}if (connection != null) {connection.close();}} catch (SQLException e) {e.printStackTrace();}}}}

 

 

案例2: 输出参数

 

存储过程:

drop procedure if exists proc_outtwo;

create procedure proc_outtwo(in idint int,out cardIdstring varchar(44),out addressstring varchar(88))

begin

    select cardID,address into cardIdstring,addressstring from employee where id =idint;

end

 

call proc_outtwo(1,@one,@two);

select @one;

select @two;

 

 import java.sql.*;import java.sql.CallableStatement;/** * * 执行存储过程 得到输出参数 * */public class GeTest2 {/** * @param args */public static void main(String[] args) {Connection connection = null;//用于执行 SQL 存储过程的接口CallableStatement statement = null;ResultSet resultSet = null;try {Class.forName("com.mysql.jdbc.Driver");String url = "jdbc:mysql://localhost:3306/test";String user = "root";String password = "123";connection = DriverManager.getConnection(url, user, password);//第一个为输入参数后面2个为输出参数String sql = "call proc_outtwo(?,?,?);";//调用存储过程statement = connection.prepareCall(sql);//设置输入参数statement.setInt(1, 1);//设置输出参数 以及类型statement.registerOutParameter(2, Types.VARCHAR);statement.registerOutParameter(3, Types.VARCHAR);statement.execute();//得到输出参数System.out.println(statement.getString(2));System.out.println(statement.getString(3));} catch (ClassNotFoundException e) {e.printStackTrace();} catch (SQLException e) {e.printStackTrace();} catch (Exception e) {e.printStackTrace();} finally {try {if (resultSet != null) {resultSet.close();}if (statement != null) {statement.close();}if (connection != null) {connection.close();}} catch (SQLException e) {e.printStackTrace();}}}}

 

 

案例3:

使用带有返回状态的存储过程  return 1;  mysql的proc不支持 返回值 sqlserver支持

如果要获得返回值的话为:

存储过程:

create proc checkit

(@addressString varchar(50))

as

begin

if ((select count(*) from employee where address =@addressString))

    return 1

else

    return 0

go

CallableStatement cstmt = con.prepareCall("{? = call checkit(?)}"); cstmt.registerOutParameter(1, java.sql.Types.INTEGER); cstmt.setString(2, "深圳"); cstmt.execute(); System.out.println("return的值" + cstmt.getInt(1));

 

 

案例4:

获得更新行数:

drop procedure if exists proc_updateEmployee;

create procedure proc_updateEmployee()

begin

    update Employee set job=1;

end

 

call proc_selectEmployee();

CallableStatement cstmt = con.prepareCall("{call proc_updateEmployee()}"); cstmt.execute(); int count = cstmt.getUpdateCount(); cstmt.close(); System.out.println("受影响行数:" + count);