Oracle入门基础（十三）一一java调用oracle存储过程教程

package demo;

import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.ResultSet;

import oracle.jdbc.OracleCallableStatement;
import oracle.jdbc.OracleTypes;

import org.junit.Test;

public class TestOracle {
/*
 * create or replace procedure queryEmpInformation(eno in number,
                                                pename out varchar2,
                                                psal   out number,
                                                pjob   out varchar2)
 */
    @Test
    public void testProcedure(){
        //{call <procedure-name>[(<arg1>,<arg2>, ...)]}
        String sql = "{call queryEmpInformation(?,?,?,?)}";
        
        Connection conn = null;
        CallableStatement call = null;
        try {
            conn = JDBCUtils.getConnection();
            call = conn.prepareCall(sql);
            
            //对于in参数，赋值
            call.setInt(1,7839);
            
            //对于out参数，申明
            call.registerOutParameter(2, OracleTypes.VARCHAR);
            call.registerOutParameter(3, OracleTypes.NUMBER);
            call.registerOutParameter(4, OracleTypes.VARCHAR);
            
            //执行
            call.execute();
            
            //输出
            String name = call.getString(2);
            double sal = call.getDouble(3);
            String job = call.getString(4);
            
            System.out.println(name+"\t"+sal+"\t"+job);
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            JDBCUtils.release(conn, call, null);
        }
    }

/*
 * create or replace function queryEmpIncome(eno in number) 
return number
 */
    @Test
    public void testFunction(){
        //{?= call <procedure-name>[(<arg1>,<arg2>, ...)]}
        String sql = "{?=call queryEmpIncome(?)}";
        
        Connection conn = null;
        CallableStatement call = null;
        try {
            conn = JDBCUtils.getConnection();
            call = conn.prepareCall(sql);
            
            call.registerOutParameter(1, OracleTypes.NUMBER);
            call.setInt(2, 7839);
            
            //执行
            call.execute();
            
            //取出年收入
            double income = call.getDouble(1);
            
            System.out.println(income);
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            JDBCUtils.release(conn, call, null);
        }        
    }


    @Test
    public void testCursor(){
        String sql = "{call mypackage.QUERYEMPLIST(?,?)}";
        
        Connection conn = null;
        CallableStatement call = null;
        ResultSet rs = null;
        try {
            conn = JDBCUtils.getConnection();
            call = conn.prepareCall(sql);
            
            //对于in参数，赋值
            call.setInt(1,20);
            
            //对于out参数，申明
            call.registerOutParameter(2, OracleTypes.CURSOR);
            
            //执行
            call.execute();
            
            //取出结果
            rs = ((OracleCallableStatement)call).getCursor(2);
            while(rs.next()){
                //取出一个员工
                String name = rs.getString("ename");
                double sal = rs.getDouble("sal");
                System.out.println(name+"\t"+sal);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            JDBCUtils.release(conn, call, rs);
        }        
        
    }
}