oracle---jdbctest--laobai

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

import oracle.jdbc.OracleTypes;
import oracle.jdbc.oracore.OracleType;

public class Test
{
	static void 简单的查询()
	{
		String sql="select * from emp where deptno=?";
		String[] paras={10+""};
		ResultSet rs=JDBCUtil.doQuery(sql, paras);
		try
		{
			while (rs.next())
			{
				int empno = rs.getInt("empno");
				String ename = rs.getString("ename");
				System.out.println(empno + "--" + ename);
			}
		}
		catch (Exception e)
		{
			System.out.println("查询异常！");
		}
		finally
		{
			JDBCUtil.close(rs);
		}
	}
	static void 简单的修改()
	{
		String sql="update emp set empno=? where ename=?";
		int result=JDBCUtil.doUpdate(sql, new String[]{"7369","老白"});
		if(result!=1)
		{
			System.out.println("修改失败！");
		}
		else
		System.out.println("修改成功！影响行数为："+result);
	}
	static void 调用无参存储过程()
	{
		//获取链接
		Connection con=JDBCUtil.getConnection();
		//执行存储过程
		String sql="{call system.update_emp_comm()}";
		int result=0;
		try
		{
			CallableStatement cmt = con.prepareCall(sql);
			result = cmt.executeUpdate();
		}
		catch (Exception e)
		{
			e.printStackTrace();
			System.out.println("执行过程出现异常！");
			return;
		}
		System.out.println("执行完毕！影响行数为："+result);
	}
	static void 调用有入参出参存储过程()
	{
		//1 获取连接
		Connection con = JDBCUtil.getConnection();
		//2 执行存储过程
		String sql = "{call update_emp_sal_by_deptno(?,?,?)}";
		int result = 0;
		try
		{
			CallableStatement cmt = con.prepareCall(sql);
			cmt.setInt(1, 30);
			cmt.setInt(2, 2000);
			//将第3个参数注册出参
			cmt.registerOutParameter(3, OracleType.STYLE_INT);
			result = cmt.executeUpdate();
			//获取第3个参数，也就是出参，执行完毕后的值
			int rowcount = cmt.getInt(3);
			System.out.println("影响了" + rowcount + "条！");
		}
		catch (Exception e)
		{
			e.printStackTrace();
			System.out.println("执行过程出现异常！");
			return;
		}
		System.out.println("执行完毕，影响行数为："+result);
	}
	static void 调用有入参的函数()
	{
		//1 获取连接
		Connection con = JDBCUtil.getConnection();
		//2 执行函数
		String sql ="{? = call delete_emp_by_empname(?)}";
		int result = 0;
		try
		{
			CallableStatement cmt = con.prepareCall(sql);
			//将函数的返回值，当成出参来注册
			cmt.registerOutParameter(1, OracleType.STYLE_INT);
			cmt.setString(2, "白");
			result = cmt.executeUpdate();
			//获取第3个参数，也就是出参，执行完毕后的值
			int rowcount = cmt.getInt(1);
			System.out.println("删除了" + rowcount + "条！");
		}
		catch (Exception e)
		{
			e.printStackTrace();
			System.out.println("执行过程出现异常！");
			return;
		}
		System.out.println(result);
		System.out.println("执行完毕！");
	}
	static void 调用有返回游标的函数()
	{
		//1 获取连接
		Connection con = JDBCUtil.getConnection();
		//2 执行函数
		String sql ="{?=call get_max_min_sal_by_group()}";
		int result = 0;
		ResultSet rs = null;
		try {
			CallableStatement cmt = con.prepareCall(sql);
			//将函数的返回值，当成出参来注册
			cmt.registerOutParameter(1, OracleTypes.CURSOR);
			result = cmt.executeUpdate();
			//获取第1个参数，也就是返回值，即游标，即resultset
			rs = (ResultSet) cmt.getObject(1);
			while (rs.next()) {
				int deptno = rs.getInt("部门号");
				float max_sal = rs.getFloat("最高工资");
				float min_sal = rs.getFloat("最低工资");
				System.out.println(deptno + "，最高工资" + max_sal + ",最低工资"
						+ min_sal);
			}
		}
		catch (Exception e)
		{
			e.printStackTrace();
			System.out.println("执行过程出现异常！");
			return;
		}
		finally
		{
			JDBCUtil.close(rs); //关闭游标
		}
		System.out.println(result);
		System.out.println("执行完毕！");
	}
	public static void testProcedure()
	{
		String sql="{call queryEmpInfo(?,?,?,?)}";
		Connection conn=null;
		CallableStatement call=null;
		try
		{
			conn = JDBCUtil.getConnection();
			call = conn.prepareCall(sql);
			//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);
			//调用
			call.execute();
			//取出结果
			String name = call.getNString(2);
			double sal = call.getDouble(3);
			String job = call.getString(4);
			System.out.println(name);
			System.out.println(sal);
			System.out.println(job);
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
	}
	public static void testFunction()
	{
		String sql = "{?=call queryEmpIncome(?)}";
		Connection conn = null;
		CallableStatement call = null;
		try
		{conn = JDBCUtil.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();
		}
	}
	public static void main(String[] args)
	{
		//简单的查询();
		//简单的修改();
		//调用无参存储过程();
		//调用有入参出参存储过程();
		//调用有入参的函数();
		//调用有返回游标的函数();
		//testProcedure();
		testFunction();
	}

}