Springboot 整合 Mybatis 的完整 Web 案例 | 泥瓦匠BYSocket

a.創(chuàng)建數(shù)據(jù)庫(kù) springbootdb：

CREATE DATABASE springbootdb;

b.創(chuàng)建表 city ：(因?yàn)槲蚁矚g徒步)

DROP TABLE IF EXISTS  `city`;
CREATE TABLE `city` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT'城市編號(hào)',
  `province_id` int(10) unsigned  NOT NULL COMMENT'省份編號(hào)',
  `city_name` varchar(25) DEFAULT NULL COMMENT'城市名稱',
  `description` varchar(25) DEFAULT NULL COMMENT'描述',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

c.插入數(shù)據(jù)

INSERT city VALUES (1 ,1,'溫嶺市','BYSocket 的家在溫嶺。');

項(xiàng)目結(jié)構(gòu)如下圖所示：

org.spring.springboot.controller – Controller 層

org.spring.springboot.dao – 數(shù)據(jù)操作層 DAO

org.spring.springboot.domain – 實(shí)體類

org.spring.springboot.service – 業(yè)務(wù)邏輯層

Application – 應(yīng)用啟動(dòng)類

application.properties – 應(yīng)用配置文件，應(yīng)用啟動(dòng)會(huì)自動(dòng)讀取配置

在項(xiàng)目根目錄 springboot-learning-example，運(yùn)行 maven 指令：

mvn cleaninstall

http://localhost:8080/api/city?cityName=溫嶺市

可以看到返回的 JSON 結(jié)果：

{
   "id": 1,
   "provinceId": 1,
   "cityName":"溫嶺市",
   "description":"我的家在溫嶺。"
}

二、springboot-mybatis 工程配置詳解

1.pom 添加 Mybatis 依賴

<!-- Spring Boot Mybatis 依賴 -->
<dependency>
   <groupId>org.mybatis.spring.boot</groupId>
   <artifactId>mybatis-spring-boot-starter</artifactId>
   <version>${mybatis-spring-boot}</version>
</dependency>

整個(gè)工程的 pom.xml:

<?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>springboot</groupId>
    <artifactId>springboot-mybatis</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springboot-mybatis :: 整合 Mybatis Demo</name>
    <!-- Spring Boot 啟動(dòng)父依賴 -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.1.RELEASE</version>
    </parent>
    <properties>
        <mybatis-spring-boot>1.2.0</mybatis-spring-boot>
        <mysql-connector>5.1.39</mysql-connector>
    </properties>
    <dependencies>
        <!-- Spring Boot Web 依賴 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- Spring Boot Test 依賴 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- Spring Boot Mybatis 依賴 -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>${mybatis-spring-boot}</version>
        </dependency>
        <!-- MySQL 連接驅(qū)動(dòng)依賴 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql-connector}</version>
        </dependency>
        <!-- Junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
    </dependencies>
</project>

2.在 application.properties 應(yīng)用配置文件，增加 Mybatis 相關(guān)配置

## Mybatis 配置
mybatis.typeAliasesPackage=org.spring.springboot.domain
mybatis.mapperLocations=classpath:mapper/*.xml

mybatis.config = mybatis 配置文件名稱

mybatis.mapperLocations = mapper xml 文件地址

mybatis.executorType = 執(zhí)行模式。默認(rèn)是 SIMPLE

Application.java 代碼如下：

/**
 * Spring Boot 應(yīng)用啟動(dòng)類
 *
 * Created by bysocket on 16/4/26.
 */
// Spring Boot 應(yīng)用的標(biāo)識(shí)
@SpringBootApplication
// mapper 接口類掃描包配置
@MapperScan("org.spring.springboot.dao")
public class Application {
   public static void main(String[] args) {
       // 程序啟動(dòng)入口
       // 啟動(dòng)嵌入式的 Tomcat 并初始化 Spring 環(huán)境及其各 Spring 組件
       SpringApplication.run(Application.class,args);
   }
}

/**
 * 城市實(shí)體類
 *
 * Created by bysocket on 07/02/2017.
 */
public class City {
    /**
     * 城市編號(hào)
     */
    private Longid;
    /**
     * 省份編號(hào)
     */
    private Long provinceId;
    /**
     * 城市名稱
     */
    private String cityName;
    /**
     * 描述
     */
    private String description;
    public Long getId() {
        return id;
    }
    public void setId(Longid) {
        this.id =id;
    }
    public Long getProvinceId() {
        return provinceId;
    }
    public void setProvinceId(Long provinceId) {
        this.provinceId = provinceId;
    }
    public String getCityName() {
        return cityName;
    }
    public void setCityName(String cityName) {
        this.cityName = cityName;
    }
    public String getDescription() {
        return description;
    }
    public void setDescription(String description) {
        this.description = description;
    }
}

三、其他