前言
因项目太老或遗留问题,项目使用mybatis开发效率较低,这里记录下把项目升级为mybatis-plus,提高开发效率。为什么选择只升级到mybatis-plus3.4.0,因为ai说这是与mybatis3.5.10版本最兼容稳定。
项目版本
mybatis版本3.5.10升级到mybatis-plus3.4.0
步骤一
xml添加依赖mybatis-plus3.4.0 建议:可以根据mybatis开发表生成得xml在哪个下就在哪个项目pom.xml加
<dependency>
<groupid>com.baomidou</groupid>
<artifactid>mybatis-plus-boot-starter</artifactid>
<version>3.4.0</version>
</dependency>步骤二
搜索项目mybatisconfig类 或按搜索@mapperscan注解所在类注释掉
import com.baomidou.mybatisplus.extension.plugins.paginationinterceptor;
import org.mybatis.spring.annotation.mapperscan;
import org.springframework.context.annotation.bean;
import org.springframework.context.annotation.configuration;
import org.springframework.transaction.annotation.enabletransactionmanagement;
/**
* mybatis相关配置
* created by macro on 2019/4/8.
*/
@configuration
@enabletransactionmanagement
//@mapperscan({"com.macro.mall.mapper"})
public class mybatisconfig {
@bean
public paginationinterceptor paginationinterceptor() {
paginationinterceptor paginationinterceptor = new paginationinterceptor();
// 配置最大页数,防止恶意请求分页查询
paginationinterceptor.setlimit(1000);
// 配置请求分页时,如果页码超过最大页数,自动回到首页
paginationinterceptor.setoverflow(true);
return paginationinterceptor;
}
}步骤三
yml配置文件注释mybatis配置添加mybatis-plus配置 标红地方按自己项目结构路径填写
mapper-locations: classpath:com/*/*/mapper/*.xml 为xml路径
type-aliases-package: com.*.*.model 为bean对象路径
#mybatis:
# mapper-locations:
# - classpath:dao/*.xml
# - classpath*:com/**/mapper/*.xml
mybatis-plus:
configuration:
log-impl: org.apache.ibatis.logging.stdout.stdoutimpl # sql 打印
global-config:
db-config:
id-type: auto # 主键策略
mapper-locations: classpath:com/*/*/mapper/*.xml
type-aliases-package: com.*.*.model解释
mapper-locations含义图解

type-aliases-package 含义图解

步骤四
application启动类注解配置标红点按自己项目路径配置
import org.mybatis.spring.annotation.mapperscan;
import org.springframework.boot.springapplication;
import org.springframework.boot.autoconfigure.springbootapplication;
import org.springframework.boot.web.servlet.servletcomponentscan;
import org.springframework.context.annotation.componentscan;
import org.springframework.scheduling.annotation.enableasync;
@mapperscan("com.*.*.mapper")
@componentscan(basepackages = "com.*.*")
@springbootapplication()
@enableasync
public class friendsapplication {
public static void main(string[] args) {
springapplication.run(makingfriendsapplication.class, args);
}
}解释
@mapperscan含义图解

@componentscan含义图解

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