基于注解实现增删查改和多参数列表查询 - 数据库编程

在【Mybatis】Mybatis入门概述及第一个Mybatis实例实现增删改查和【Mybatis】Mybatis接口编程方式实现增删改查演示了如何使用XML来操作Mybatis实现CRUD，但是大量的XML配置文件的编写是非常烦人的。因此Mybatis也提供了基于注解的配置方式，下面我们来演示一下使用接口加注解来实现CRUD的的例子。

一、创建数据库、数据表

use test;  
create table t_employeer(  
employeer_id int not null  primary key AUTO_INCREMENT ,  
employeer_name varchar(50) default null,  
employeer_age int default null,  
employeer_department varchar(100) default null,  
employeer_worktype varchar(100) default null  
)

二、创建工程

整个工程目录如下：

记得要导入相应的包！

1、雇员对应的类Employeer.java

package com.mucfc.model;
/**
 * 雇员信息类
 *@author linbingwen
 *@time 2015.5.11
 */
public class Employeer {
	private Integer employeer_id;
	private String employeer_name;
	private Integer employeer_age ;
	private String employeer_department;
	private String employeer_worktype;
	
	public Employeer() {
		super();
	}
	public Integer getEmployeer_id() {
		return employeer_id;
	}
	public void setEmployeer_id(Integer employeer_id) {
		this.employeer_id = employeer_id;
	}
	public String getEmployeer_name() {
		return employeer_name;
	}
	public void setEmployeer_name(String employeer_name) {
		this.employeer_name = employeer_name;
	}
	public Integer getEmployeer_age() {
		return employeer_age;
	}
	public void setEmployeer_age(Integer employeer_age) {
		this.employeer_age = employeer_age;
	}
	public String getEmployeer_department() {
		return employeer_department;
	}
	public void setEmployeer_department(String employeer_department) {
		this.employeer_department = employeer_department;
	}
	public String getEmployeer_worktype() {
		return employeer_worktype;
	}
	public void setEmployeer_worktype(String employeer_worktype) {
		this.employeer_worktype = employeer_worktype;
	}
	@Override
	public String toString() {
		return "Employeer [employeer_id=" + employeer_id + ", employeer_name="
				+ employeer_name + ", employeer_age=" + employeer_age
				+ ", employeer_department=" + employeer_department
				+ ", employeer_worktype=" + employeer_worktype + "]";
	}
	


}

Employeer.xml文件，用来放置一些映射，删除了Sql语句了

2、配置mybatis-config.xml

  
  
  
  
      
      
          
      
      
      
      
          
              
              
            mysql.jdbc.Driver"/>

3、EmployeerMapper.java在添加Sql映射语句，使用注解的方式来实现

package com.mucfc.dao;

import java.util.List;
import java.util.Map;

import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.ResultMap;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.SelectKey;
import org.apache.ibatis.annotations.Update;

import com.mucfc.model.Employeer;

/**
 * SQL语句映射类
 * @author linbingwen
 * @time 2015.5.11
 */
public interface EmployeerMapper {
    @Select("select * from `t_employeer` where employeer_name like #{employeer_name}")
	@ResultMap("employeerResultMap")
	public List
  
    findEmployeerByName(String employeer_name);    
    
    @Select("select* from `t_employeer` where employeer_name=#{0} and employeer_department=#{1}")
	@ResultMap("employeerResultMap")
    
	public List
   
     findEmployeerByNameandDep(String employeer_name,String employeer_department); @ResultMap("employeerRes

基于注解实现增删查改和多参数列表查询(一)