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這篇文章給大家分享的是有關(guān)mall整合SpringBoot+MyBatis搭建基本骨架的示例分析的內(nèi)容。小編覺得挺實(shí)用的,因此分享給大家做個(gè)參考,一起跟隨小編過來看看吧。
摘要
本文主要講解mall整合SpringBoot+MyBatis搭建基本骨架,以商品品牌為例實(shí)現(xiàn)基本的CRUD操作及通過PageHelper實(shí)現(xiàn)分頁查詢。
mysql數(shù)據(jù)庫(kù)環(huán)境搭建
下載并安裝mysql5.7版本,下載地址:https://dev.mysql.com/downloads/installer/
設(shè)置數(shù)據(jù)庫(kù)帳號(hào)密碼:root root
下載并安裝客戶端連接工具Navicat,下載地址:http://www.formysql.com/xiazai.html
創(chuàng)建數(shù)據(jù)庫(kù)mall導(dǎo)入
mall的數(shù)據(jù)庫(kù)腳本,腳本地址:https://github.com/macrozheng/mall-learning/blob/master/document/sql/mall.sql
項(xiàng)目使用框架介紹
SpringBoot
SpringBoot可以讓你快速構(gòu)建基于Spring的Web應(yīng)用程序,內(nèi)置多種Web容器(如Tomcat),通過啟動(dòng)入口程序的main函數(shù)即可運(yùn)行。
PagerHelper
MyBatis分頁插件,簡(jiǎn)單的幾行代碼就能實(shí)現(xiàn)分頁,在與SpringBoot整合時(shí),只要整合了PagerHelper就自動(dòng)整合了MyBatis。
PageHelper.startPage(pageNum, pageSize); //之后進(jìn)行查詢操作將自動(dòng)進(jìn)行分頁 List<PmsBrand> brandList = brandMapper.selectByExample(new PmsBrandExample()); //通過構(gòu)造PageInfo對(duì)象獲取分頁信息,如當(dāng)前頁碼,總頁數(shù),總條數(shù) PageInfo<PmsBrand> pageInfo = new PageInfo<PmsBrand>(list);
Druid
alibaba開源的數(shù)據(jù)庫(kù)連接池,號(hào)稱Java語言中最好的數(shù)據(jù)庫(kù)連接池。
Mybatis generator
MyBatis的代碼生成器,可以根據(jù)數(shù)據(jù)庫(kù)生成model、mapper.xml、mapper接口和Example,通常情況下的單表查詢不用再手寫mapper。
項(xiàng)目搭建
使用IDEA初始化一個(gè)SpringBoot項(xiàng)目
添加項(xiàng)目依賴
在pom.xml中添加相關(guān)依賴。
<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.3.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <dependencies> <!--SpringBoot通用依賴模塊--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-aop</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <!--MyBatis分頁插件--> <dependency> <groupId>com.github.pagehelper</groupId> <artifactId>pagehelper-spring-boot-starter</artifactId> <version>1.2.10</version> </dependency> <!--集成druid連接池--> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.10</version> </dependency> <!-- MyBatis 生成器 --> <dependency> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-core</artifactId> <version>1.3.3</version> </dependency> <!--Mysql數(shù)據(jù)庫(kù)驅(qū)動(dòng)--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.15</version> </dependency> </dependencies>
修改SpringBoot配置文件
在application.yml中添加數(shù)據(jù)源配置和MyBatis的mapper.xml的路徑配置。
server: port: 8080 spring: datasource: url: jdbc:mysql://localhost:3306/mall?useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai username: root password: root mybatis: mapper-locations: - classpath:mapper/*.xml - classpath*:com/**/mapper/*.xml
項(xiàng)目結(jié)構(gòu)說明
Mybatis generator 配置文件
配置數(shù)據(jù)庫(kù)連接,Mybatis generator生成model、mapper接口及mapper.xml的路徑。
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> <generatorConfiguration> <properties resource="generator.properties"/> <context id="MySqlContext" targetRuntime="MyBatis3" defaultModelType="flat"> <property name="beginningDelimiter" value="`"/> <property name="endingDelimiter" value="`"/> <property name="javaFileEncoding" value="UTF-8"/> <!-- 為模型生成序列化方法--> <plugin type="org.mybatis.generator.plugins.SerializablePlugin"/> <!-- 為生成的Java模型創(chuàng)建一個(gè)toString方法 --> <plugin type="org.mybatis.generator.plugins.ToStringPlugin"/> <!--可以自定義生成model的代碼注釋--> <commentGenerator type="com.macro.mall.tiny.mbg.CommentGenerator"> <!-- 是否去除自動(dòng)生成的注釋 true:是 : false:否 --> <property name="suppressAllComments" value="true"/> <property name="suppressDate" value="true"/> <property name="addRemarkComments" value="true"/> </commentGenerator> <!--配置數(shù)據(jù)庫(kù)連接--> <jdbcConnection driverClass="${jdbc.driverClass}" connectionURL="${jdbc.connectionURL}" userId="${jdbc.userId}" password="${jdbc.password}"> <!--解決mysql驅(qū)動(dòng)升級(jí)到8.0后不生成指定數(shù)據(jù)庫(kù)代碼的問題--> <property name="nullCatalogMeansCurrent" value="true" /> </jdbcConnection> <!--指定生成model的路徑--> <javaModelGenerator targetPackage="com.macro.mall.tiny.mbg.model" targetProject="mall-tiny-01\src\main\java"/> <!--指定生成mapper.xml的路徑--> <sqlMapGenerator targetPackage="com.macro.mall.tiny.mbg.mapper" targetProject="mall-tiny-01\src\main\resources"/> <!--指定生成mapper接口的的路徑--> <javaClientGenerator type="XMLMAPPER" targetPackage="com.macro.mall.tiny.mbg.mapper" targetProject="mall-tiny-01\src\main\java"/> <!--生成全部表tableName設(shè)為%--> <table tableName="pms_brand"> <generatedKey column="id" sqlStatement="MySql" identity="true"/> </table> </context> </generatorConfiguration>
運(yùn)行Generator的main函數(shù)生成代碼
package com.macro.mall.tiny.mbg; import org.mybatis.generator.api.MyBatisGenerator; import org.mybatis.generator.config.Configuration; import org.mybatis.generator.config.xml.ConfigurationParser; import org.mybatis.generator.internal.DefaultShellCallback; import java.io.InputStream; import java.util.ArrayList; import java.util.List; /** * 用于生產(chǎn)MBG的代碼 * Created by macro on 2018/4/26. */ public class Generator { public static void main(String[] args) throws Exception { //MBG 執(zhí)行過程中的警告信息 List<String> warnings = new ArrayList<String>(); //當(dāng)生成的代碼重復(fù)時(shí),覆蓋原代碼 boolean overwrite = true; //讀取我們的 MBG 配置文件 InputStream is = Generator.class.getResourceAsStream("/generatorConfig.xml"); ConfigurationParser cp = new ConfigurationParser(warnings); Configuration config = cp.parseConfiguration(is); is.close(); DefaultShellCallback callback = new DefaultShellCallback(overwrite); //創(chuàng)建 MBG MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings); //執(zhí)行生成代碼 myBatisGenerator.generate(null); //輸出警告信息 for (String warning : warnings) { System.out.println(warning); } } }
添加MyBatis的Java配置
用于配置需要?jiǎng)討B(tài)生成的mapper接口的路徑
package com.macro.mall.tiny.config; import org.mybatis.spring.annotation.MapperScan; import org.springframework.context.annotation.Configuration; /** * MyBatis配置類 * Created by macro on 2019/4/8. */ @Configuration @MapperScan("com.macro.mall.tiny.mbg.mapper") public class MyBatisConfig { }
實(shí)現(xiàn)Controller中的接口
實(shí)現(xiàn)PmsBrand表中的添加、修改、刪除及分頁查詢接口。
package com.macro.mall.tiny.controller; import com.macro.mall.tiny.common.api.CommonPage; import com.macro.mall.tiny.common.api.CommonResult; import com.macro.mall.tiny.mbg.model.PmsBrand; import com.macro.mall.tiny.service.PmsBrandService; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.validation.BindingResult; import org.springframework.web.bind.annotation.*; import java.util.List; /** * 品牌管理Controller * Created by macro on 2019/4/19. */ @Controller @RequestMapping("/brand") public class PmsBrandController { @Autowired private PmsBrandService demoService; private static final Logger LOGGER = LoggerFactory.getLogger(PmsBrandController.class); @RequestMapping(value = "listAll", method = RequestMethod.GET) @ResponseBody public CommonResult<List<PmsBrand>> getBrandList() { return CommonResult.success(demoService.listAllBrand()); } @RequestMapping(value = "/create", method = RequestMethod.POST) @ResponseBody public CommonResult createBrand(@RequestBody PmsBrand pmsBrand) { CommonResult commonResult; int count = demoService.createBrand(pmsBrand); if (count == 1) { commonResult = CommonResult.success(pmsBrand); LOGGER.debug("createBrand success:{}", pmsBrand); } else { commonResult = CommonResult.failed("操作失敗"); LOGGER.debug("createBrand failed:{}", pmsBrand); } return commonResult; } @RequestMapping(value = "/update/{id}", method = RequestMethod.POST) @ResponseBody public CommonResult updateBrand(@PathVariable("id") Long id, @RequestBody PmsBrand pmsBrandDto, BindingResult result) { CommonResult commonResult; int count = demoService.updateBrand(id, pmsBrandDto); if (count == 1) { commonResult = CommonResult.success(pmsBrandDto); LOGGER.debug("updateBrand success:{}", pmsBrandDto); } else { commonResult = CommonResult.failed("操作失敗"); LOGGER.debug("updateBrand failed:{}", pmsBrandDto); } return commonResult; } @RequestMapping(value = "/delete/{id}", method = RequestMethod.GET) @ResponseBody public CommonResult deleteBrand(@PathVariable("id") Long id) { int count = demoService.deleteBrand(id); if (count == 1) { LOGGER.debug("deleteBrand success :id={}", id); return CommonResult.success(null); } else { LOGGER.debug("deleteBrand failed :id={}", id); return CommonResult.failed("操作失敗"); } } @RequestMapping(value = "/list", method = RequestMethod.GET) @ResponseBody public CommonResult<CommonPage<PmsBrand>> listBrand(@RequestParam(value = "pageNum", defaultValue = "1") Integer pageNum, @RequestParam(value = "pageSize", defaultValue = "3") Integer pageSize) { List<PmsBrand> brandList = demoService.listBrand(pageNum, pageSize); return CommonResult.success(CommonPage.restPage(brandList)); } @RequestMapping(value = "/{id}", method = RequestMethod.GET) @ResponseBody public CommonResult<PmsBrand> brand(@PathVariable("id") Long id) { return CommonResult.success(demoService.getBrand(id)); } }
添加Service接口
package com.macro.mall.tiny.service; import com.macro.mall.tiny.mbg.model.PmsBrand; import java.util.List; /** * PmsBrandService * Created by macro on 2019/4/19. */ public interface PmsBrandService { List<PmsBrand> listAllBrand(); int createBrand(PmsBrand brand); int updateBrand(Long id, PmsBrand brand); int deleteBrand(Long id); List<PmsBrand> listBrand(int pageNum, int pageSize); PmsBrand getBrand(Long id); }
實(shí)現(xiàn)Service接口
package com.macro.mall.tiny.service.impl; import com.github.pagehelper.PageHelper; import com.macro.mall.tiny.mbg.mapper.PmsBrandMapper; import com.macro.mall.tiny.mbg.model.PmsBrand; import com.macro.mall.tiny.mbg.model.PmsBrandExample; import com.macro.mall.tiny.service.PmsBrandService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; /** * PmsBrandService實(shí)現(xiàn)類 * Created by macro on 2019/4/19. */ @Service public class PmsBrandServiceImpl implements PmsBrandService { @Autowired private PmsBrandMapper brandMapper; @Override public List<PmsBrand> listAllBrand() { return brandMapper.selectByExample(new PmsBrandExample()); } @Override public int createBrand(PmsBrand brand) { return brandMapper.insertSelective(brand); } @Override public int updateBrand(Long id, PmsBrand brand) { brand.setId(id); return brandMapper.updateByPrimaryKeySelective(brand); } @Override public int deleteBrand(Long id) { return brandMapper.deleteByPrimaryKey(id); } @Override public List<PmsBrand> listBrand(int pageNum, int pageSize) { PageHelper.startPage(pageNum, pageSize); return brandMapper.selectByExample(new PmsBrandExample()); } @Override public PmsBrand getBrand(Long id) { return brandMapper.selectByPrimaryKey(id); } }
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