Oracle中的存储过程: /* 创建一个存储函数,返回指定员工的姓名,薪水和年收入 */ create or replace function queryEmp2(eno in
Oracle中的存储过程:
/*
创建一个存储函数,返回指定员工的姓名,薪水和年收入
*/
create or replace function queryEmp2(eno in number, empname out VARCHAR2,empsal out NUMBER)
--返回年收入
return NUMBER
as
begin
select ename,sal into empname, empsal from emp where empno=eno;
--返回年收入
return empsal*12 + nvl(empsal,0);
end;
/
调用上面的存储过程的单元测试:
package demo;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import org.junit.Test;
public class Demo {
@Test
public void testQueryEmpl() throws Exception {
//注册驱动
Class.forName("oracle.jdbc.OracleDriver");
//注意如果端口不是1521时,,这时要给他改掉。
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
//默认使用的是orcale中的用户scott
String user = "scott";
//scott的用户名和密码是tiger
String password = "tiger";
//调用存储过程。
String sql = "{call queryEmpl2(?,?,?)}";
Connection conn = DriverManager.getConnection(url,user,password);
CallableStatement call = conn.prepareCall(sql);
//赋参数值
call.setInt(1, 7839);
//对于out参数
//下面的方法是告诉输出的数据的参数类型,即Oracle中的varchar类型。
call.registerOutParameter(2, oracle.jdbc.OracleTypes.VARCHAR);
call.registerOutParameter(3, oracle.jdbc.OracleTypes.NUMBER);
//执行
call.execute();
//取结果,获得名字和薪水
String name = call.getString(2);
double sal = call.getDouble(3);
System.out.println(name + " " + sal);
//关闭资源
call.close();
conn.close();
}
}

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