Maven使用MyBatis构建项目

整体项目

使用pom.xml导入jar包

  4.0.0
  	
  com.mybatis
  	
  MyBatisPro01
  
  0.0.1-SNAPSHOT
  	  
  jar


  
    UTF-8
  
	
  
	
    	org.mybatis
    	mybatis
    	3.2.8
	
	
    	mysql
    	mysql-connector-java
    	3.1.12
	
	
    	log4j
    	log4j
    	1.2.17
	
    
      junit
      junit
      4.12
      test
    
  

log4j.properties

log4j.rootLogger=info,appender1,appender2
log4j.appender.appender1=org.apache.log4j.ConsoleAppender 
log4j.appender.appender2=org.apache.log4j.FileAppender 
log4j.appender.appender2.File=D:/logFile.txt
log4j.appender.appender1.layout=org.apache.log4j.TTCCLayout
log4j.appender.appender2.layout=org.apache.log4j.TTCCLayout  

jdbc.properties

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://192.168.220.129:3306/test
jdbc.username=root
jdbc.password=1234

mybatis-config.xml

Student实体类

package com.java1234.model;
public class Student {
	private Integer id;
	private String name;
	private Integer age;
	public Student() {

		super();
	}	
	public Student(String name, Integer age) {
		super();
		this.name = name;
		this.age = age;
	}
	public Student(Integer id, String name, Integer age) {
		super();
		this.id = id;
		this.name = name;
		this.age = age;
	}
	
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public Integer getAge() {
		return age;
	}
	public void setAge(Integer age) {
		this.age = age;
	}
}

Mapper接口

package com.java1234.mappers;

import java.util.List;
import com.java1234.model.Address;
import com.java1234.model.Student;

public interface StudentMapper {
	public int add(Student student);	
	public int update(Student student);
	public int delete(Integer id);
	public Student findById(Integer id);
	public List find();
}

StudentMapper.XML映射文件

	
		
		
		
	
	
	
		insert into Student values(null,#{name},#{age})
	

	
		update Student set name=#{name},age=#{age} where id=#{id}
	
	
	
		delete from Student where id=#{id}
	
	
	
		select * from Student where id=#{id}
	
	
	
		select * from Student
	
 

创建SqlSession的工具类

package com.java1234.util;

import java.io.InputStream;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

public class SqlSessionFactoryUtil {
	private static SqlSessionFactory sqlSessionFactory;	


	public static SqlSessionFactory getSqlSessionFactory(){

		if(sqlSessionFactory==null){
			InputStream inputStream=null;
			try{
				inputStream=Resources.getResourceAsStream("mybatis-config.xml");
				sqlSessionFactory=new SqlSessionFactoryBuilder().build(inputStream);
			}catch(Exception e){
				e.printStackTrace();
			}
		}
		return sqlSessionFactory;
	}
	
	public static SqlSession openSession(){
		return getSqlSessionFactory().openSession();
	}
}

测试类

package com.java1234.model;

import java.util.List;
import org.apache.ibatis.session.SqlSession;
import org.apache.log4j.Logger;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.java1234.mappers.StudentMapper;
import com.java1234.model.Student;
import com.java1234.util.SqlSessionFactoryUtil;


public class StudentTest {

	private static Logger logger=Logger.getLogger(StudentTest.class);
	private SqlSession sqlSession=null;
	private StudentMapper studentMapper=null;
	
	/**
	 * 测试方法前调用
	 * @throws Exception
	 */
	@Before
	public void setUp() throws Exception {
		sqlSession=SqlSessionFactoryUtil.openSession();
		studentMapper=sqlSession.getMapper(StudentMapper.class);
	}

	/**
	 * 测试方法后调用
	 * @throws Exception
	 */
	@After
	public void tearDown() throws Exception {
		sqlSession.close();
	}

	public void testAdd() {
		logger.info("添加学生");
		Student student=new Student("王五",12);
		studentMapper.add(student);
		sqlSession.commit();
	}

	public void testUpdate(){
		logger.info("修改学生");
		Student student=new Student(8,"王五2",13);
		studentMapper.update(student);
		sqlSession.commit();
	}
	
	public void testDelete(){
		logger.info("删除学生");
		studentMapper.delete(8);
		sqlSession.commit();
	}
	
	public void testFindById(){
		logger.info("通过ID查找学生");
		Student student=studentMapper.findById(12);
		System.out.println(student);
	}
	
	public void testFind(){
		logger.info("查找所有学生");
		List studentList=studentMapper.find();
		for(Student s:studentList){
			logger.info(s.getId()+" "+s.getName()+" "+s.getAge());
		}
	}
}