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MyBatis 3的自增ID的Bug(续)

MyBatis 3的自增ID的Bug(续)

作者：chszs

转载请注明出处！

自上次我提出MyBatis 3的Bug之后，见：http://blog.csdn.net/chszs/archive/2011/03/31/6292719.aspx

我把Bug提交到MyBatis的官方网站，见http://code.google.com/p/mybatis/issues/detail?id=287

问题描述如下：

Eclipse Java Project:
1. SqlMapConfig.xml
  


	
		
			
			
				
				
				
				
			
		
	
	
		
	
  

2. mysql.sql
USE test;
CREATE TABLE `worker` (
  `id` INT(11) NOT NULL AUTO_INCREMENT,
  `pin` VARCHAR(64) DEFAULT NULL,
  `firstname` VARCHAR(64) DEFAULT NULL,
  `lastname` VARCHAR(64) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;

3. WorkerMapper
package com.dao;

import com.entity.Worker;
public interface WorkerMapper {
	int insertWorker(Worker worker);
}

4. Worker.java
package com.entity;

public class Worker {
    private Integer id;

    private String pin;

    private String firstname;

    private String lastname;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getPin() {
        return pin;
    }

    public void setPin(String pin) {
        this.pin = pin == null ? null : pin.trim();
    }

    public String getFirstname() {
        return firstname;
    }

    public void setFirstname(String firstname) {
        this.firstname = firstname == null ? null : firstname.trim();
    }

    public String getLastname() {
        return lastname;
    }

    public void setLastname(String lastname) {
        this.lastname = lastname == null ? null : lastname.trim();
    }
}

5. WorkerMapper.xml



  
    
    
    
    
  

  
  	 
			select LAST_INSERT_ID()
		
    insert into worker
    
      
        pin,
      
      
        firstname,
      
      
        lastname,
      
    
    
      
        #{pin,jdbcType=VARCHAR},
      
      
        #{firstname,jdbcType=VARCHAR},
      
      
        #{lastname,jdbcType=VARCHAR},
      
    
  



6. Test.java
/**
 * @Author: Li.Qiang
 * @Date:   2011-3-9
 */
package com.test;
import java.io.Reader;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import com.entity.Worker;

public class Test {
	public static void main(String[] args) throws Exception{
		String resource = "conf/SqlMapConfig.xml";
		Reader reader = Resources.getResourceAsReader(resource);
		SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(reader);
		SqlSession session = factory.openSession();
		
		Worker worker = new Worker();
		worker.setPin("123456");
		worker.setFirstname("Tom");
		worker.setLastname("Jack");

		try{
			for(int i=0; i<20; i++){
				int tmpId = session.insert("insertWorker", worker);
				session.commit();
				System.out.println("Worker ID: " + tmpId);
			}
		} finally{
			session.close();
		}
		
	}
}

7. Test.java Output:
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1
Worker ID: 1

can't get the real id.

得到MyBatis作者的反馈，语句本身有int型的返回值，表示插入的条数。故在语句内想使用返回自增ID自动生成的ID值是不可能的。

可以单独用