所需要用到的其他工具或技术:
项目管理工具 : Maven
测试运行工具 : Junit
数据库 : Derby
本节需要用到的有2部分，第一部分是如何在Derby中创建存储过程，第二部分是如何在Mybatis中调用存储过程
一. 在Derby中创建存储过程
1.在Eclipse中创建一个新的普通java项目命名为Test_Store_Procedure
2.在com.freud.practice包下创建一个Class命名为StoreProcedureOperationClass.class
package com.freud.practice;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
/**
*
* 存储过程类
*
* @author Freud
*
*/
public class StoreProcedureOperationClass
{
/**
*
* 执行插入的存储过程
*
* @param id
* @param username
* @param password
* @param nickname
* @throws SQLException
*/
public static void insertData(int id, String username, String password, String nickname) throws SQLException
{
Connection connection = DriverManager.getConnection("jdbc:default:connection");
PreparedStatement p =
connection.prepareStatement("INSERT INTO USER_TEST_TB(ID,USERNAME,PASSWORD,NICKNAME) VALUES(?,?,?,?)");
p.setInt(1, id);
p.setString(2, username);
p.setString(3, password);
p.setString(4, nickname);
System.out.println("INSERT VALUES (id=" + id + ",username=" + username + ",password=" + password + ",nickname="
+ nickname + ")");
p.executeUpdate();
p.close();
connection.close();
}
}
3. 利用jar命令或者Eclipse工具导出到C:\freud\Test_Store_Procedure.jar
4. 在ij命令行中声明存储过程
CREATE PROCEDURE FREUD.INSERT_USER(IN THE_ID INTEGER,
IN THE_USERNAME VARCHAR(20), IN THE_PASSWORD VARCHAR(20), IN THE_NICKNAME VARCHAR(20))
PARAMETER STYLE JAVA MODIFIES SQL DATA LANGUAGE JAVA
EXTERNAL NAME 'com.freud.practice.StoreProcedureOperationClass.insertData';
5. 在 ij 控制台中调用call sqlj.install_jar(‘C:\freud\Test_Store_Procedure.jar‘, ‘FREUD.TEST_SPROCEDURE‘, 0);将 jar 包导入到 FREUD模式中，并命名为TEST_SPROCEDURE。
6. 在 ij 控制台中调用call SYSCS_UTIL.SYSCS_SET_DATABASE_PROPERTY(‘derby.database.classpath‘, ‘FREUD.TEST_SPROCEDURE‘); 将 jar 包加入到数据库 classpath 搜索路径中。
这样，Derby的存储过程就算创建完成了（更多的Derby存储过程信息参照Apache Derby）
二.在Mybatis中调用存储过程
Maven Dependencies:
<dependencies> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.2.7</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.9</version> <scope>test</scope> </dependency> <dependency> <groupId>org.apache.derby</groupId> <artifactId>derby</artifactId> <version>10.10.2.0</version> </dependency> <dependency> <groupId>org.apache.derby</groupId> <artifactId>derbyclient</artifactId> <version>10.10.2.0</version> </dependency> </dependencies>
Mybatis配置文件 src/main/resource源目录下
test-mybatis-configuration.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<properties>
<property name="driver" value="org.apache.derby.jdbc.ClientDriver" />
<property name="url"
value="jdbc:derby://localhost:1527/freud;create=true" />
</properties>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC" />
<dataSource type="POOLED">
<property name="driver" value="${driver}" />
<property name="url" value="${url}" />
</dataSource>
</environment>
</environments>
<mappers>
<mapper resource="com/freud/practice/UserMapper.xml" />
</mappers>
</configuration>
User.java对象类(src/main/java/com/freud/practice目录下)
package com.freud.practice;
public class User
{
private Integer id;
private String username;
private String password;
private String nickname;
public Integer getId()
{
return id;
}
public void setId(Integer id)
{
this.id = id;
}
public String getUsername()
{
return username;
}
public void setUsername(String username)
{
this.username = username;
}
public String getPassword()
{
return password;
}
public void setPassword(String password)
{
this.password = password;
}
public String getNickname()
{
return nickname;
}
public void setNickname(String nickname)
{
this.nickname = nickname;
}
}
UserMapper.xml Mapper文件（src/main/java/com.freud.practice目录下）
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.freud.practice.UserMapper">
<!-- 查询 -->
<select id="getUser" resultType="com.freud.practice.User">
select *
from USER_TEST_TB
</select>
<!-- 调用插入的存储过程 -->
<insert id="insertUser" statementType="CALLABLE">
CALL FREUD.INSERT_USER(#{id},#{username},#{password},#{nickname})
</insert>
</mapper>
UserMapper.java Mapper类（src/main/java/com.freud.practice目录下）
package com.freud.practice;
import java.util.List;
public interface UserMapper
{
public List<User> getUser();
public void insertUser(User user);
}
测试类TestMyBatis.java（src/test/java/com.freud.practice目录下）
package com.freud.practice;
import java.io.InputStream;
import java.text.MessageFormat;
import java.util.List;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Before;
import org.junit.Test;
public class TestMyBatis
{
private String source;
private InputStream inputStream;
private SqlSessionFactory sqlSessionFactory;
@Before
public void setUp()
{
/**
* 准备Mybatis运行环境
*/
source = "test-mybatis-configuration.xml";
inputStream = TestMyBatis.class.getClassLoader().getResourceAsStream(source);
sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
}
@Test
public void testInsert()
{
try
{
// 获取Session连接
SqlSession session = sqlSessionFactory.openSession();
// 获取Mapper
UserMapper userMapper = session.getMapper(UserMapper.class);
System.out.println("Test insert start...");
// 显示插入之前User信息
System.out.println("Before insert");
this.printUsers(userMapper.getUser());
// 执行插入
userMapper.insertUser(this.mockUser("FREU_INS_USER", "FREUD_INS_PASS", "FREUD_INS_NICK"));
// 提交事务
session.commit();
// 显示插入之后User信息
System.out.println("\r\nAfter insert");
this.printUsers(userMapper.getUser());
System.out.println("Test insert finished...");
}
catch (Exception e)
{
e.printStackTrace();
}
}
/**
*
* 组装一个User对象
*
* @return
*/
public User mockUser(String username, String password, String nickname)
{
User user = new User();
user.setId(50);
user.setUsername(username);
user.setPassword(password);
user.setNickname(nickname);
return user;
}
/**
*
* 打印用户信息到控制台
*
* @param users
*/
private void printUsers(final List<User> users)
{
int count = 0;
for (User user : users)
{
System.out.println(MessageFormat.format("==User[{0}]=================", ++count));
System.out.println("User Id: " + user.getId());
System.out.println("User UserName: " + user.getUsername());
System.out.println("User Password: " + user.getPassword());
System.out.println("User nickname: " + user.getNickname());
}
}
}
MyBatis系列教程(五)-- 处理存储过程(Handle the Store Procedure)
时间： 2024-08-26 19:26:45