springboot之mybatis注解形式

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 +
                '}';
    }
}

view code

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