详解springboot中mybatis注解形式
投稿：laozhang
在本文中小编给大家分享了关于springboot中mybatis注解形式的介绍，有兴趣的可以跟着学习下。
springboot整合mybatis对数据库进行访问，本实例采用注解的方式，如下：
pom.xml文件
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.5.RELEASE</version>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.45</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
domain类
package com.rookie.bigdata.domain;
/**
* @author
* @date 2018/10/9
*/
public class Student {
private Long stuNo;
private String name;
private Integer age;
public Student() {
}
public Student(String name, Integer age) {
this.name = name;
this.age = age;
}
public Student(Long stuNo, String name, Integer age) {
this.stuNo = stuNo;
this.name = name;
this.age = age;
}
public Long getStuNo() {
return stuNo;
}
public void setStuNo(Long stuNo) {
this.stuNo = stuNo;
}
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;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Student student = (Student) o;
if (stuNo != null ? !stuNo.equals(student.stuNo) : student.stuNo != null) return false;
if (name != null ? !name.equals(student.name) : student.name != null) return false;
return age != null ? age.equals(student.age) : student.age == null;
}
@Override
public int hashCode() {
int result = stuNo != null ? stuNo.hashCode() : 0;
result = 31 * result + (name != null ? name.hashCode() : 0);
result = 31 * result + (age != null ? age.hashCode() : 0);
return result;
}
@Override
public String toString() {
return "Student{" +
"stuNo=" + stuNo +
", name='" + name + '\'' +
", age=" + age +
'}';
}
}
StudentMapper类
package com.rookie.bigdata.mapper;
import com.rookie.bigdata.domain.Student;
import org.apache.ibatis.annotations.*;
import java.util.List;
import java.util.Map;
/**
* @author
* @date 2018/10/9
*/
@Mapper
public interface StudentMapper {
@Select("SELECT * FROM student WHERE name = #{name}")
Student findByName(@Param("name") String name);
@Results({
@Result(property = "name", column = "name"),
@Result(property = "age", column = "age")
})
@Select("SELECT name, age FROM student")
List<Student> findAll();
@Insert("INSERT INTO student(name, age) VALUES(#{name}, #{age})")
int insert(@Param("name") String name, @Param("age") Integer age);
@Update("UPDATE student SET age=#{age} WHERE name=#{name}")
void update(Student student);
@Delete("DELETE FROM student WHERE id =#{id}")
void delete(Long id);
@Insert("INSERT INTO student(name, age) VALUES(#{name}, #{age})")
int insertByUser(Student student);
@Insert("INSERT INTO student(name, age) VALUES(#{name,jdbcType=VARCHAR}, #{age,jdbcType=INTEGER})")
int insertByMap(Map<String, Object> map);
}
测试类如下：
package com.rookie.bigdata.mapper;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.transaction.annotation.Transactional;
import static org.junit.Assert.*;
/**
* @author
* @date 2018/10/10
*/
@RunWith(SpringRunner.class)
@SpringBootTest
public class StudentMapperTest {
@Autowired
private StudentMapper studentMapper;
@Test
public void findByName() throws Exception {
System.out.println(studentMapper.findByName("zhangsan"));
}
@Test
public void findAll() throws Exception {
System.out.println(studentMapper.findByName("zhangsan"));
}
@Test
public void insert() throws Exception {
System.out.println( studentMapper.insert("zhangsan", 20));
}
@Test
public void update() throws Exception {
}
@Test
public void delete() throws Exception {
}
@Test
public void insertByUser() throws Exception {
}
@Test
public void insertByMap() throws Exception {
}
}
大家可以自己编写测试类进行测试一下，后续会更新xml的配置方式和mybatis采用多数据源进行配置的方式