详解springboot中mybatis注解形式

湛蓝之海

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