mall整合SpringBoot+MyBatis搭建基本骨架

時間  2019-12-01
標籤 mall 整合 springboot+mybatis springboot mybatis 搭建 基本 骨架 欄目 Spring 简体版
原文   原文鏈接

本文主要講解mall整合SpringBoot+MyBatis搭建基本骨架，以商品品牌爲例實現基本的CRUD操做及經過PageHelper實現分頁查詢。php

mysql數據庫環境搭建

項目使用框架介紹

SpringBoot

SpringBoot能夠讓你快速構建基於Spring的Web應用程序，內置多種Web容器(如Tomcat)，經過啓動入口程序的main函數便可運行。html

PagerHelper

MyBatis分頁插件，簡單的幾行代碼就能實現分頁，在與SpringBoot整合時，只要整合了PagerHelper就自動整合了MyBatis。java

PageHelper.startPage(pageNum, pageSize);
//以後進行查詢操做將自動進行分頁
List<PmsBrand> brandList = brandMapper.selectByExample(new PmsBrandExample());
//經過構造PageInfo對象獲取分頁信息，如當前頁碼，總頁數，總條數
PageInfo<PmsBrand> pageInfo = new PageInfo<PmsBrand>(list);
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Druid

alibaba開源的數據庫鏈接池，號稱Java語言中最好的數據庫鏈接池。mysql

Mybatis generator

MyBatis的代碼生成器，能夠根據數據庫生成model、mapper.xml、mapper接口和Example，一般狀況下的單表查詢不用再手寫mapper。git

項目搭建

使用IDEA初始化一個SpringBoot項目

展現圖片

添加項目依賴

在pom.xml中添加相關依賴。github

<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鏈接池-->
        <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數據庫驅動-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.15</version>
        </dependency>
    </dependencies>
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修改SpringBoot配置文件

在application.yml中添加數據源配置和MyBatis的mapper.xml的路徑配置。web

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
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項目結構說明

展現圖片

Mybatis generator 配置文件

配置數據庫鏈接，Mybatis generator生成model、mapper接口及mapper.xml的路徑。spring

<?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"/>
        <!-- 爲模型生成序列化方法-->
        <plugin type="org.mybatis.generator.plugins.SerializablePlugin"/>
        <!-- 爲生成的Java模型建立一個toString方法 -->
        <plugin type="org.mybatis.generator.plugins.ToStringPlugin"/>
        <!--能夠自定義生成model的代碼註釋-->
        <commentGenerator type="com.macro.mall.tiny.mbg.CommentGenerator">
            <!-- 是否去除自動生成的註釋 true：是 ： false:否 -->
            <property name="suppressAllComments" value="true"/>
            <property name="suppressDate" value="true"/>
            <property name="addRemarkComments" value="true"/>
        </commentGenerator>
        <!--配置數據庫鏈接-->
        <jdbcConnection driverClass="${jdbc.driverClass}" connectionURL="${jdbc.connectionURL}" userId="${jdbc.userId}" password="${jdbc.password}">
            <!--解決mysql驅動升級到8.0後不生成指定數據庫代碼的問題-->
            <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"/>
        <!--生成所有表tableName設爲%-->
        <table tableName="pms_brand">
            <generatedKey column="id" sqlStatement="MySql" identity="true"/>
        </table>
    </context>
</generatorConfiguration>
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運行Generator的main函數生成代碼

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;

/** * 用於生產MBG的代碼 * Created by macro on 2018/4/26. */
public class Generator {
    public static void main(String[] args) throws Exception {
        //MBG 執行過程當中的警告信息
        List<String> warnings = new ArrayList<String>();
        //當生成的代碼重複時，覆蓋原代碼
        boolean overwrite = true;
        //讀取咱們的 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);
        //建立 MBG
        MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
        //執行生成代碼
        myBatisGenerator.generate(null);
        //輸出警告信息
        for (String warning : warnings) {
            System.out.println(warning);
        }
    }
}
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添加MyBatis的Java配置

用於配置須要動態生成的mapper接口的路徑sql

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 {
}

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實現Controller中的接口

實現PmsBrand表中的添加、修改、刪除及分頁查詢接口。數據庫

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("操做失敗");
            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("操做失敗");
            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("操做失敗");
        }
    }

    @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));
    }
}

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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);
}

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實現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實現類 * 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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項目源碼地址

github.com/macrozheng/…

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