前言
存储过程（Stored Procedure）是存储在数据库中经过第一次编译后再次调用不需要再次编译，用户通过指定存储过程的名字并给出参数（如果该存储过程带有参数）来执行它。
Java调用MySQL的存储过程，需要用JDBC连接，环境eclipse
首先查看MySQL中的数据库的存储过程，接着编写代码调用
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mysql> show procedure status;+------+-------------+-----------+----------------+---------------------+---------------------+---------------+---------+----------------------+----------------------+--------------------+| Db | Name | Type | Definer | Modified | Created | Security_type | Comment | character_set_client | collation_connection | Database Collation |+------+-------------+-----------+----------------+---------------------+---------------------+---------------+---------+----------------------+----------------------+--------------------+| book | findAllBook | PROCEDURE | root@localhost | 2016-09-04 11:13:31 | 2016-09-04 11:13:31 | DEFINER | | gbk | gbk_chinese_ci | utf8_general_ci || book | pro_test | PROCEDURE | root@localhost | 2016-11-13 08:27:17 | 2016-11-13 08:27:17 | DEFINER | | gbk | gbk_chinese_ci | utf8_general_ci || book | pro_user | PROCEDURE | root@localhost | 2016-11-13 08:44:34 | 2016-11-13 08:44:34 | DEFINER | | gbk | gbk_chinese_ci | utf8_general_ci |+------+-------------+-----------+----------------+---------------------+---------------------+---------------+---------+----------------------+----------------------+--------------------+rows in set (0.01 sec)mysql> show create procedure findAllBook;+-------------+------------------------+---------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+| Procedure | sql_mode | Create Procedure | character_set_client | collation_connection | Database Collation |+-------------+------------------------+---------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+| findAllBook | NO_ENGINE_SUBSTITUTION | CREATE DEFINER=`root`@`localhost` PROCEDURE `findAllBook`()begin select * from tb_books;end | gbk | gbk_chinese_ci | utf8_general_ci |+-------------+------------------------+---------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+row in set (0.00 sec) |
一、工程目录结构
二、Book.java
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package com.scd.book;public class Book { private String name; //图书名称 private double price; //价格 private int bookCount; //数量 private String author; //作者 public String getName() { //System.out.println(name); return name; } public void setName(String name) { this.name = name; } public double getPrice() { return price; } public void setPrice(double price) { this.price = price; } public int getBookCount() { return bookCount; } public void setBookCount(int bookCount) { this.bookCount = bookCount; } public String getAuthor() { return author; } public void setAuthor(String author) { //System.out.println(author); this.author = author; }} |
三、FindBook.java
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package com.scd.book;import java.sql.CallableStatement;import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.util.ArrayList;import java.util.List;public class FindBook { /** * 获取数据库连接 * @return Connection对象 */ public Connection getConnection() { Connection conn = null; //数据库连接 try { Class.forName("com.mysql.jdbc.Driver"); //加载数据库驱动，注册到驱动管理器 /*数据库链接地址*/ String url = "jdbc:mysql://localhost:3306/book?useUnicode=true&characterEncoding=UTF-8"; String username = "root"; String password = "123456"; /*创建Connection链接*/ conn = DriverManager.getConnection(url, username, password); } catch (ClassNotFoundException e){ e.printStackTrace(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } return conn; //返回数据库连接 } /** * 通过存储过程查询数据 * @return List<Book> */ public List<Book> findAll() { List <Book> list = new ArrayList<Book>(); //实例化List对象 Connection conn = getConnection(); //创建数据库连接 try { //调用存储过程 CallableStatement cs = conn.prepareCall("{call findAllBook()}"); ResultSet rs = cs.executeQuery(); //执行查询操作，并获取结果集 while(rs.next()) { Book book = new Book(); //实例化Book对象 book.setName(rs.getString("name")); //对name属性赋值 book.setPrice(rs.getDouble("price")); //对price属性赋值 book.setBookCount(rs.getInt("bookCount")); //对bookCount属性赋值 book.setAuthor(rs.getString("author")); //对author属性赋值 list.add(book); } }catch(Exception e) { e.printStackTrace(); } return list; //返回list } /** * 主函数 调用存储过程(测试使用) * @param args */ public static void main(String[] args) { FindBook fb = new FindBook(); //System.out.println(fb.findAll()); for (Book book : fb.findAll()) { System.out.print(book.getName() + "--" + book.getPrice() + "--"); System.out.print(book.getBookCount() + "--" + book.getAuthor()); System.out.println(); } }} |
四、右键 Run As --> Java Application, 控制台输出
五、执行存储过程中的 sql语句
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mysql> select * from tb_books;+------------------+-------+-----------+----------+| name | price | bookCount | author |+------------------+-------+-----------+----------+| Java丛入门到精通 | 56.78 | 13 | Mr. Sun || 数据结构 | 67.3 | 8962 | Mr. Sun || 编译原理 | 78.66 | 5767 | Mr. Sun || 数据结构 | 67.42 | 775 | Mr.Cheng |+------------------+-------+-----------+----------+rows in set (0.00 sec)mysql> call findAllBook();+------------------+-------+-----------+----------+| name | price | bookCount | author |+------------------+-------+-----------+----------+| Java丛入门到精通 | 56.78 | 13 | Mr. Sun || 数据结构 | 67.3 | 8962 | Mr. Sun || 编译原理 | 78.66 | 5767 | Mr. Sun || 数据结构 | 67.42 | 775 | Mr.Cheng |+------------------+-------+-----------+----------+rows in set (0.00 sec) |
总结
以上就是Java调用MySQL存储过程的全部内容，希望本文的内容对大家的学习或者工作能带来一定的帮助，如果有疑问大家可以留言交流。
