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9.1添加jar包

9.2新建数据表

CREATE TABLE s_user(user_id INT AUTO_INCREMENT PRIMARY KEY,user_name VARCHAR(30),user_birthday DATE,user_salary DOUBLE)

9.3新建实体类

User.java

package com.domain;import java.util.Date;public class User {
       private int id;    private String name;    private Date birthday;    private double salary;    public User() {        super();    }    public User(int id, String name, Date birthday, double salary) {        super();        this.id = id;        this.name = name;        this.birthday = birthday;        this.salary = salary;    }    public int getId() {        return id;    }    public void setId(int id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public Date getBirthday() {        return birthday;    }    public void setBirthday(Date birthday) {        this.birthday = birthday;    }    public double getSalary() {        return salary;    }    public void setSalary(double salary) {        this.salary = salary;    }    @Override    public String toString() {        return "User [id=" + id + ", name=" + name + ", birthday=" + birthday                + ", salary=" + salary + "]";    }   }

9.4 DAO 接口: UserMapper

UserMapper.java

package com.mapper;import java.util.List;import com.domain.User;public interface UserMapper {
       void save(User user);    void update(User user);    void delete(int id);    User findById(int id);    List
   
     findAll();}
   

9.5 SQL 映射文件: userMapper.xml

userMapper.xml

   
   
      
    
            insert into s_user(user_name,user_birthday,user_salary) values(#{name},#{birthday},#{salary})   
       
    
           update s_user set user_name=#{name},user_birthday=#{birthday},user_salary=#{salary} where user_id=#{id}   
       
    
           delete from s_user where user_id=#{id}   
       
          select user_id id,user_name name,user_birthday birthday,user_salary salary from s_user where user_id=#{id}      
           select user_id id,user_name name,user_birthday birthday,user_salary salary from s_user   
   

9.6 spring 的配置文件: beans.xml

beans.xml

9.7 mybatis 的配置文件: mybatis-config.xml

mybatis-config.xml

9.8 测试类

SMTest.java

package com.test;import java.util.Date;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;import com.domain.User;import com.mapper.UserMapper;@RunWith(SpringJUnit4ClassRunner.class)//使用spring的测试框架@ContextConfiguration("/beans.xml") //加载spring的beans.xml配置文件 public class SMTest {
       @Autowired    private UserMapper userMapper;    //测试添加    @Test    public void testAdd()    {        userMapper.save(new User(-1,"Tom",new Date(),3000));    }    //测试update    @Test    public void testUpdate()    {        userMapper.update(new User(1,"Tom2",new Date(),3000));    }}

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