1、编写select
<insert id="insertUserTestAutoIncrement" parameterType="Student" useGeneratedKeys="true" keyProperty="id">
insert into students(password,age,salary,name) values (#{st.password}, #{st.age}, #{st.salary}, #{st.name});
</insert>
2、调用，自增主键自动放入student的id字段
package com.william;
import com.william.mapper.Role;
import com.william.mapper.Student;
import com.william.mapper.StudentExample;
import com.william.mapper.StudentMapper;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.ExecutorType;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.exception.InvalidConfigurationException;
import org.mybatis.generator.exception.XMLParserException;
import org.mybatis.generator.internal.DefaultShellCallback;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
@Slf4j
@Data
public class Main {
static public void main(String[] args) throws IOException, XMLParserException, InvalidConfigurationException, SQLException, InterruptedException {
String resource = "mybatis-config.xml";
InputStream inputStream = Resources.getResourceAsStream(resource);
System.out.println(inputStream.toString());
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
SqlSession session = sqlSessionFactory.openSession(true);
StudentMapper mapper = session.getMapper(StudentMapper.class);
Student student = new Student();
student.setAddress("Beijing");
student.setAge(99);
student.setName("FUCK");
student.setPassword("123123");
mapper.insertUserTestAutoIncrement(student);
System.out.printf("自增主键为: %d\n", student.getId());
}
}
