调用存储过程

准备一个oracle 的JDBC jar 包：ojdbc14_11g.jar

首先找到你的 oracle 安装位置，例如：

1.创建一个JDBC数据库连接工具类：

package com.test.db;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class JDBCUtils {

	private static String driver = "oracle.jdbc.OracleDriver";
	private static String url = "jdbc:oracle:thin:@127.0.0.1:1521:orcl";
	private static String user = "数据库连接名";
	private static String password = "数据库连接密码";
	
	//注册数据库驱动
	static{
		try {
			Class.forName(driver);
		} catch (Exception e) {
			throw new ExceptionInInitializerError(e);
		}
	}
	
	/**
	 * 获取数据库连接
	 * @return
	 */
	public static Connection getConnection(){
		try {
			return DriverManager.getConnection(url,user,password);
		} catch (SQLException e) {
			e.printStackTrace();
		}
		return null;
	}
	
	/**
	 * 释放数据库连接资源
	 * @param conn
	 * @param st
	 * @param rs
	 */
	public static void release(Connection conn,Statement st,ResultSet rs){
		if (rs!=null) {
			try {
				rs.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}finally{
				rs = null;
			}
		}
		
		if (st!=null) {
			try {
				st.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}finally{
				st = null;
			}
		}
		
		if (conn!=null) {
			try {
				conn.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}finally{
				conn = null;
			}
		}
	}
}

2.调用 存储过程：

package com.test.demo;

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

import org.junit.Test;

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

import com.hwb.db.JDBCUtils;

/**
 * 调用存储过程  一个输入参数，多个 输出参数
 * @author Administrator
 *
 */
public class ProcedureTest {

	/**
	 * create or replace procedure selectUserById(uid in number,
                                           uName out VARCHAR2,
                                           uAge out number,
                                           uSex out char)
	 */
	
	@Test
	public void testProcedure(){
		
		String sql = "{call selectUserById(?,?,?,?)}";
		
		Connection conn = null;
		CallableStatement call = null;
		try {
			//得到一个数据库连接
			conn = JDBCUtils.getConnection();
			//通过连接创建出statement
			call = conn.prepareCall(sql);
			//对于in参数，赋值
			call.setInt(1, 2);  // (第几个问号,要赋的值)
			//对out参数，声明
			call.registerOutParameter(2, OracleTypes.VARCHAR);  //(第几个问号，声明的类型)
			call.registerOutParameter(3, OracleTypes.NUMBER);
			call.registerOutParameter(4, OracleTypes.CHAR);
			
			//执行调用
			call.execute();
			
			//取出结果
			String userName = call.getString(2);
			int userAge = call.getInt(3);
			String userSex = call.getString(4);
			
			System.out.println("用户姓名："+userName+"\n\t年龄:"+userAge+"\n\t性别："+userSex);
			
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
                    //关闭连接，释放资源
                   JDBCUtils.release(conn, call, null);
		}
		
	}
}

3.调用存储方法：

package com.test.demo;

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

import oracle.jdbc.internal.OracleTypes;

import org.junit.Test;

import com.hwb.db.JDBCUtils;

/**
 * 调用存储函数，一个输入参数，一个输出参数
 * @author Administrator
 *
 */
public class FunctionTest {

	/**
	 * create or replace function selectAge(eno in number)
		return number 
	 */
	@Test
	public void testFunction(){
		//{？= call <procedure-name>[<arg1>,<arg2>...]}
		String sql = "{call selectAge(?)}";
		Connection conn = null;
		CallableStatement call = null;
		try {
			//得到数据库连接
			conn = JDBCUtils.getConnection();
			
			//通过数据库连接创建statement
			call = conn.prepareCall(sql);
			
			//对于输出参数，声明
			call.registerOutParameter(1, OracleTypes.NUMBER);
			
			//对于输入参数，赋值
			call.setInt(2, 3);
			
			//执行调用
			call.execute();
			
                        //获取返回的结果
			int age = call.getInt(1);
			
			System.out.println("该用户年龄："+age);
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			JDBCUtils.release(conn, call, null);
		}
	}
}

4.调用存储过程，一个输入参数，返回一个查询结果集合

package com.hwb.demo;

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




import org.junit.Test;

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

import com.hwb.db.JDBCUtils;
/**
 * 存储过程  一个输入参数，返回一个查询结果集合
 * @author Administrator
 *
 */
public class CursorTest {

	/**
	 * create or replace package Mypackage as
		procedure queryUserList(uid in number,userList out usercursor);
		end mypackage;
	 */
	@Test
	public void testCursor(){
		String sql = "{call Mypackage.queryUserList(?,?) }";
		
		Connection conn = null;
		CallableStatement call = null;
		ResultSet rs = null;
		try {
			//得到数据库连接
			conn = JDBCUtils.getConnection();
			//通过数据库连接创建statement
			call = conn.prepareCall(sql);
			
			//对于输入参数，赋值
			call.setInt(1, 1);
			//对于输出参数，声明
			call.registerOutParameter(2, OracleTypes.CURSOR);
			//执行调用
			call.execute();
			//将CallableStatement 强转成  OracleCallableStatement 用来获取光标类型Cursor，并得到结果ResultSet
			rs = ((OracleCallableStatement)call).getCursor(2);
			//遍历 ResultSet
			while (rs.next()) {
				//根据类型和列名取值
				int id = rs.getInt("user_id");    //括号内为 列名
				String user_name = rs.getString("user_name");
				int age = rs.getInt("user_age");
				String sex = rs.getString("user_sex");
				System.out.println("查询到的用户信息：\n\tid:"+id+"\n\t姓名："+user_name
						+"\n\t年龄："+age+"\n\t性别："+sex);
			}
			
			
			
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			JDBCUtils.release(conn, call, rs);
		}
	}
}

调用存储过程

原文：https://www.cnblogs.com/qiu18359243869/p/13341923.html