springBoot整合mybatisPlus从零搭建项目--基础整合版
springBoot整合Mybatis和spring data jdbc 初级版。简单搭个项目。
环境是Jdk8
第一步创建项目：打开idea>file>project>SpringInitializr
第二步 选择需要加载的开发工具类：这里选择默认的springboot版本即可，选择完成后点击 create即可
第三步：项目创建完成之后，进入file>setting里面搜索maven并更改默认的maven配置，使用我们自己的maven配置。
在设置完maven后如果侧边没有出现maven工具栏重启一下就好，如果maven加载不成功则根据提示信息再次重复上一步即可。
当maven加载完成后运行即可（此时没有设置数据库连接，运行后控制台会提醒没有数据源）
在这时候一个简单的springBoot项目已经搭建完毕，但是没有配置数据源，下面进入application.yml的简单配置:首先将application.propertites改为application.yml 并复制一份改名为application-dev.yml（application-dev开发环境 application-test 测试环境 application-pro 生产环境）
在application里面配置active为dev，代表我们目前使用的是dev的配置文件
在application-dev.yml里面配置：
variable: profiles: dev #数据源 spring: datasource: username: 数据库用户名 password: 数据库用户密码 url: jdbc:mysql://数据库地址:3306/app_version?useSSL=false&useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=CONVERT_TO_NULL&serverTimezone=GMT%2B8&allowMultiQueries=true driver-class-name: com.mysql.cj.jdbc.Driver server: tomcat: uri-encoding: utf-8 #设置端口 port: 8080 servlet: #设置访问路径前缀 context-path: /car318 ##Mybatis Plus 配置 mybatis-plus: #配置mapper.xml，实体类，枚举类 的扫描路径 mapper-locations: classpath*:/mapper/**/*Mapper.xml type-aliases-package: com.car318.appversion.**.entity type-enums-package: com.car318.appversion.**.enums global-config: db-config: id-type: auto table-underline: false configuration:
#下划线自动转驼峰 #map-underscore-to-camel-case: false cache-enabled: false # 默认不展示展示日志 # log-impl: org.apache.ibatis.logging.nologging.NoLoggingImpl # 展示日志 log-impl: org.apache.ibatis.logging.stdout.StdOutImpl #解决mybatis查询时数据返回值为null时不会反射的问题---目前设置了也没用 call-setters-on-nulls: true
做完application-dev配置后复制改名为application-test和application-pro将里面的profiles值改为对应的值，数据库修改地址，即可实现在application里面进行配置文件的切换。
最后，因为部分驱动尚未导入，需要在pom文件中导入jar包即可：
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.6.7</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.car318</groupId> <artifactId>appVersion</artifactId> <version>0.0.1-SNAPSHOT</version> <name>appVersion</name> <description>appVersion</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jdbc</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <scope>runtime</scope> <optional>true</optional> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.restdocs</groupId> <artifactId>spring-restdocs-mockmvc</artifactId> <scope>test</scope> </dependency> <!-- 数据库驱动--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <!-- mybatis--> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus-boot-starter</artifactId> <version>3.3.2</version> </dependency> <!-- 引入log4j --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <!-- 热启动 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> </dependency> <!-- 测试--> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.13</version> <scope>test</scope> </dependency> <!-- aspectjrt引入--> <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.9.5</version> </dependency> <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjrt --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>1.9.5</version> </dependency> <!-- json引入--> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.75</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.asciidoctor</groupId> <artifactId>asciidoctor-maven-plugin</artifactId> <version>1.5.8</version> <executions> <execution> <id>generate-docs</id> <phase>prepare-package</phase> <goals> <goal>process-asciidoc</goal> </goals> <configuration> <backend>html</backend> <doctype>book</doctype> </configuration> </execution> </executions> <dependencies> <dependency> <groupId>org.springframework.restdocs</groupId> <artifactId>spring-restdocs-asciidoctor</artifactId> <version>${spring-restdocs.version}</version> </dependency> </dependencies> </plugin> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <version>2.5.0</version> <configuration> <excludes> <exclude> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </exclude> </excludes> </configuration> </plugin> </plugins> </build> </project>
