Java调用MySQL存储过程
Joy8132
8年前
<p>Java调用MySQL的存储过程，需要用JDBC连接，环境eclipse</p> <p>首先查看MySQL中的数据库的存储过程，接着编写代码调用</p> <pre> <code class="language-java">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 | +------+-------------+-----------+----------------+---------------------+---------------------+---------------+---------+----------------------+----------------------+--------------------+ 3 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 | +-------------+------------------------+---------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+ 1 row in set (0.00 sec) </code></pre> <p><strong>1.工程目录结构</strong></p> <p><img src="https://simg.open-open.com/show/e1bc3acf7af89f117de51c43a2e00aaa.png"></p> <p><strong>2.Book.java</strong></p> <pre> <code class="language-java">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; } } </code></pre> <p><strong>3.FindBook.java</strong></p> <pre> <code class="language-java">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(); } } } </code></pre> <p><strong>4.右键 Run As --> Java Application, 控制台输出</strong></p> <p><img src="https://simg.open-open.com/show/99a8af72417ffbd7b207117f3b270156.png"></p> <p><strong>5.执行存储过程中的 sql语句</strong></p> <pre> <code class="language-java">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 | +------------------+-------+-----------+----------+ 4 rows in set (0.00 sec) </code></pre> <p> </p> <p>来自：http://www.cnblogs.com/shootercheng/p/6058130.html</p> <p> </p>