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具体步骤

1.导入相关jar包

build.gradle

plugins {
       id 'java'}group 'com.tjrac'version '1.0-SNAPSHOT'sourceSets.main.resources.srcDirs = ["src/main/java","src/main/resources"]configurations {
       mybatisGenerator}sourceCompatibility = 1.8repositories {
       mavenCentral()}dependencies {
       testCompile group: 'junit', name: 'junit', version: '4.12'    compile group: 'org.springframework', name: 'spring-webmvc', version: '5.2.2.RELEASE'    compile group: 'org.springframework', name: 'spring-jdbc', version: '5.2.2.RELEASE'    compile group: 'org.aspectj', name: 'aspectjweaver', version: '1.9.5'    compile group: 'mysql', name: 'mysql-connector-java', version: '8.0.18'    compile group: 'org.mybatis', name: 'mybatis', version: '3.5.3'    compile group: 'org.aspectj', name: 'aspectjweaver', version: '1.9.5'    compile group: 'org.mybatis', name: 'mybatis-spring', version: '2.0.3'    compile group: 'commons-io', name: 'commons-io', version: '2.6'    compile group: 'org.projectlombok', name: 'lombok', version: '1.18.10'    compile group: 'org.mybatis.generator', name: 'mybatis-generator-core', version: '1.4.0'}

2.编写配置文件

复习mybatis

1.编写实体类

mybatis.xml核心配置文件

UserMappr.xml

   
   
       
            select * from text.student;    
   

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