1.创建一个springboot项目:
2.创建项目的文件结构以及jdk版本
3.选择项目所需要的依赖
点击finish,文件创建完毕。
5. 文件结构如图所示:
6. pom.xml内容:
<?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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>springboot-mybatis-demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springboot-mybatis-demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.0.1</version>
</dependency>
<!--mysql jdbc驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.46</version>
</dependency>
<!--json-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-joda</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.module</groupId>
<artifactId>jackson-module-parameter-names</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- 分页插件 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>1.2.10</version>
</dependency>
<!-- alibaba的druid数据库连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.7</version>
<configuration>
<configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</configurationFile>
<overwrite>true</overwrite>
<verbose>true</verbose>
</configuration>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.46</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>
7.项目可以使用application.properties文件,但是由于使用更加简洁的application.yml文件,所以本文选择创建和使用application.yml文件,application.yml文件的内容(如代码中出现阴影部分,则类库中的方法可能过时,根据自己导入的依赖版本换成新的方法),本篇博客的代码如下:
server:
port: 8080
spring:
datasource:
name: test
url: jdbc:mysql://127.0.0.1:3306/user
username: root
password: root
# 使用druid数据源
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
dbcp2:
initial-size: 1
max-wait-millis: 60000
min-idle: 1
time-between-eviction-runs-millis: 60000
validation-query: select 'x'
test-on-borrow: false
test-on-return: false
test-while-idle: true
max-total: 20
## 该配置节点为独立的节点,有很多同学容易将这个配置放在spring的节点下,导致配置无法被识别
mybatis:
mapper-locations: classpath:mapping/*.xml #注意:一定要对应mapper映射xml文件的所在路径
type-aliases-package: com.example.springbootmybatisdemo.model # 注意:对应实体类的路径
#pagehelper分页插件
pagehelper:
helperDialect: mysql
reasonable: true
supportMethodsArguments: true
params: count=countSql
8.创建数据库
CREATE DATABASE sms;
CREATE TABLE user(
worknumber INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
name VARCHAR(255) NOT NULL ,
phone VARCHAR(255) NOT NULL ,
idcard VARCHAR(255) ,
birthday VARCHAR(255)
) ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
9.使用mybatis generator自动生成代码:
注意:
配置pom.xml中generator 插件所对应的配置文件 ${basedir}/src/main/resources/generator/generatorConfig.xml
选择resources下的generator文件,选择new -> Mybatis -> new Configuration file,命名为generatorConfig.xml,用这种方式创建文件,文件中会有很多现成的代码,只需要根据需要填写就好。
文件generatorConfig.xml内容如下:
<?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>
<classPathEntry location="C:\Users\gmz\.m2\repository\org\mybatis\generator\mybatis-generator-core\1.3.7\mybatis-generator-core-1.3.7.jar"/>
<context id="context" targetRuntime="MyBatis3Simple">
<commentGenerator>
<property name="suppressAllComments" value="true"/>
<property name="suppressDate" value="true"/>
</commentGenerator>
<jdbcConnection userId="root" password="root" driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/sms"/>
<javaTypeResolver>
<property name="forceBigDecimals" value="false"/>
</javaTypeResolver>
<javaModelGenerator targetPackage="com.example.springbootmybatisdemo.model" targetProject="src/main/java">
<property name="enableSubPackages" value="false"/>
<property name="trimStrings" value="true"/>
</javaModelGenerator>
<sqlMapGenerator targetPackage="mapping" targetProject="src/main/resources">
<property name="enableSubPackages" value="false"/>
</sqlMapGenerator>
<javaClientGenerator targetPackage="com.example.springbootmybatisdemo.mapper" type="XMLMAPPER" targetProject="src/main/java">
<property name="enableSubPackages" value="false"/>
</javaClientGenerator>
<table schema="User" tableName="user" enableCountByExample="false" enableDeleteByExample="false"
enableSelectByExample="false" enableUpdateByExample="false"/>
</context>
</generatorConfiguration>
然后点击 run -> Edit Configurations,填写配置信息。
最后点击运行。
注意!!!同一张表一定不要运行多次,因为mapper的映射文件中会生成多次的代码,导致报错,切记!
如果运行成功,则会生成以下文件,如图所示。
如果未运行成功,需要根据控制台的报错信息进一步修改代码。
最开始,我也没有运行成功,然后查看控制台报错信息,发现是缺少这一步:
配置文件中:
<classPathEntry location="C:\Users\gmz\.m2\repository\org\mybatis\generator\mybatis-generator-core\1.3.7\mybatis-generator-core-1.3.7.jar"/>
手机扫一扫
移动阅读更方便
你可能感兴趣的文章