若依spring-cloud 集成mybaties-plus

1.在项目根pom文件中添加依赖

            
            
                com.baomidou
                mybatis-plus-boot-starter
                ${mybatis-plus.version}
            

2.在模块 ruoyi-common-core里的pom文件中添加依赖

        
        
            com.baomidou
            mybatis-plus-boot-starter
        

3.nacos配置文件application-dev.yml中添加如下配置,并且去掉ruoyi-system-dev.yml中mybaties的配置

# mybatis配置
mybatis-plus:
    # 搜索指定包别名
    typeAliasesPackage: com.ruoyi.*
    # 配置mapper的扫描，找到所有的mapper.xml映射文件
    mapper-locations: classpath:mapper/**/*.xml

4.在ruoyi-common-core模块下添加类配置文件

MybatisPlusConfig.java 

代码

package com.ruoyi.common.core.config;

import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.BlockAttackInnerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.OptimisticLockerInnerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;

/**
 * Mybatis Plus 配置
 *
 * @author ruoyi
 */
@EnableTransactionManagement(proxyTargetClass = true)
@Configuration
public class MybatisPlusConfig
{
    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor()
    {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        // 分页插件
        interceptor.addInnerInterceptor(paginationInnerInterceptor());
        // 乐观锁插件
        interceptor.addInnerInterceptor(optimisticLockerInnerInterceptor());
        // 阻断插件
        interceptor.addInnerInterceptor(blockAttackInnerInterceptor());
        return interceptor;
    }

    /**
     * 分页插件，自动识别数据库类型 https://baomidou.com/guide/interceptor-pagination.html
     */
    public PaginationInnerInterceptor paginationInnerInterceptor()
    {
        PaginationInnerInterceptor paginationInnerInterceptor = new PaginationInnerInterceptor();
        // 设置数据库类型为mysql
        paginationInnerInterceptor.setDbType(DbType.MYSQL);
        // 设置最大单页限制数量，默认 500 条，-1 不受限制
        paginationInnerInterceptor.setMaxLimit(-1L);
        return paginationInnerInterceptor;
    }

    /**
     * 乐观锁插件 https://baomidou.com/guide/interceptor-optimistic-locker.html
     */
    public OptimisticLockerInnerInterceptor optimisticLockerInnerInterceptor()
    {
        return new OptimisticLockerInnerInterceptor();
    }

    /**
     * 如果是对全表的删除或更新操作，就会终止该操作 https://baomidou.com/guide/interceptor-block-attack.html
     */
    public BlockAttackInnerInterceptor blockAttackInnerInterceptor()
    {
        return new BlockAttackInnerInterceptor();
    }
}

然后找到resources目录下spring.factories文件添加下面配置，将该类注入spring里，不添加会导致分页失效

com.ruoyi.common.core.config.MybatisPlusConfig

如图

 

 5.使用

在业务模块中对应的mapper文件和service文件按照mybties-plus的用法正常调用即可

例如在ruoyi-system模块中

关键代码如下

public interface SysMenuMapper extends BaseMapper

 在service中调用即可

SysMenu sysMenu = menuMapper.selectById(5l);