第04章—整合Mybatis

spring boot 系列学习记录:http://www.cnblogs.com/jinxiaohang/p/8111057.html

码云源码地址:https://gitee.com/jinxiaohang/springboot

 

SSM框架中接触过Spring整合Mybatis。

一、引入依赖

如果是新建项目的,可以在这页添加依赖;

如果是原有项目,还可以在pom.xml 引入ORM框架(Mybaits-Starter)和数据库驱动(MySQL-Conn)的依赖。

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.xiaohang</groupId>
    <artifactId>springboot-mybatis</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>springboot-mybatis</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.9.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <!--添加Web依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--添加Test依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!--添加MySQL驱动依赖 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <!--添加Mybatis依赖 -->
        <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>

 

二、添加数据源

application.properties也可以配置,但语法上有些不同而已。

在application.yml 添加数据源,以及开启Mybaits的驼峰映射功能。

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/test?useSSL=false
    username: root
    password: root
    driver-class-name: com.mysql.jdbc.Driver

mybatis:
  configuration:
   map-underscore-to-camel-case: true #开启驼峰映射

三、编写各层代码

// entity类如下:
public class User {
    private String userId;
    private String username;
    private String password;
    // Getters & Setters ..
}
// dao层代码如下:
@Component
public interface UserMapper {

    @Select("select * from user")
    List<User> list();

    @Select("select * from user where userId = #{userId}")
    User getOne(String userId);

    @Insert("insert into user(userId,username,password) values(#{userId},#{username},#{password})")
    boolean save(User user);

    @Update("update user set username=#{username},password=#{password} where userId=#{userId}")
    boolean update(User user);

    @Delete("delete from user where userId = #{userId}")
    boolean delete(String userId);
}

//service层
//
serviceImpl层
//controller层
这些都和之前接触的类似,所以不在罗列,具体可以参照上面上传的代码

 

四、添加数据库记录

mysql> DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
  `userId` varchar(50) ,
  `username` varchar(50) ,
  `password` varchar(50) 
) ;

INSERT INTO `user` VALUES ('1', 'admin', 'admin');
INSERT INTO `user` VALUES ('2', 'yizhiwazi', '123456');

 

 五、启动项目

@SpringBootApplication
@MapperScan("com.xiaohang.springbootmybatis.dao")//新添加的注解
public class SpringbootMybatisApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringbootMybatisApplication.class, args);
    }
}

 

六、测试

运用火狐浏览器或者postman进行测试。

 

本篇重点关键在于依赖的添加文件配置、和一些注解的使用,其他都和接触过的ssm、ssh差不多。

 

因为测试是件很麻烦的事,而且对于这样的接口进行测试,还要与前端的需求统一,所以下一章将学习swagger。

posted @ 2018-01-11 22:32  zhihang!  阅读(307)  评论(0编辑  收藏  举报