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若依后端 MyBatis改为MyBatis-Plus

news 来源：原创 2024/9/20 5:42:37

引用

1.引入MyBatis-Plus依赖

在总目录的pom.xml，导入依赖

<mybatis-plus.version>3.4.3</mybatis-plus.version>


<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>${mybatis-plus.version}</version>
</dependency>

2.在ruoyi-common下的pom.xml添加mybatis-plus依赖

<!-- mybatis-plus 增强CRUD -->
<dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId>
</dependency>

3.修改配置文件

ruoyi-admin下src\main\resources\application.yml,注释mybatis的配置，新增plus的配置，这段配置我是从若依官方拷贝过来的，如果跟你实际不一样就修改一下

# MyBatis配置
#mybatis:
#  # 搜索指定包别名
#  typeAliasesPackage: com.spiceIngredients.**.domain
#  # 配置mapper的扫描，找到所有的mapper.xml映射文件
#  mapperLocations: classpath*:mapper/**/*Mapper.xml
#  # 加载全局的配置文件
#  configLocation: classpath:mybatis/mybatis-config.xml
# MyBatis Plus配置

mybatis-plus:# 搜索指定包别名typeAliasesPackage: com.spiceIngredients.**.domain# 配置mapper的扫描，找到所有的mapper.xml映射文件mapperLocations: classpath*:mapper/**/*Mapper.xml# 加载全局的配置文件configLocation: classpath:mybatis/mybatis-config.xml# MyBatis-Plus分页插件配置pagination:# 分页合理化参数，默认falsereasonable: true# 支持通过 Mapper 接口参数来传递分页参数supportMethodsArguments: true# 默认值为false，设置为true时，允许在参数中使用countSqlparams: count=countSql

4.重写mybatis配置文件

在framework中，找到MybatisConfig文件，然后删除，在刚删除的文件夹下，新建一个MybatisPlus的java文件，复制已下内容到java文件中：

package com.spiceIngredients.framework.config;
import com.baomidou.mybatisplus.annotation.DbType;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.OptimisticLockerInnerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.BlockAttackInnerInterceptor;/*** Mybatis Plus 配置** @author ruoyi*/
@EnableTransactionManagement(proxyTargetClass = true)
@Configuration
public class MybatisPlusConfig
{@Beanpublic 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mysqlpaginationInnerInterceptor.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();}
}

5.把代码生成修改为mybatis-plus版本

ruoyi-generator下src\main\resources\vm\java 文件夹下面，直接文件内容替换：

1. domain.java.vm

package ${packageName}.domain;#foreach ($import in $importList)
import ${import};
#end
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import com.rchuing.sis.common.annotation.Excel;
import java.io.Serializable;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
#if($table.crud || $table.sub)
import com.rchuing.sis.common.core.domain.BaseEntity;
#elseif($table.tree)
import com.fenghuang.common.core.domain.TreeEntity;
#end/*** ${functionName}对象 ${tableName}** @author ${author}* @date ${datetime}*/
#if($table.crud || $table.sub)#set($Entity="BaseEntity")
#elseif($table.tree)#set($Entity="TreeEntity")
#end
@Data
@Builder
@AllArgsConstructor
@NoArgsConstructor
@TableName("${tableName}")
public class ${ClassName} implements Serializable{
private static final long serialVersionUID = 1L;#foreach ($column in $columns)#if(!$table.isSuperColumn($column.javaField))/** $column.columnComment */#if($column.list)#set($parentheseIndex=$column.columnComment.indexOf("（"))#if($parentheseIndex != -1)#set($comment=$column.columnComment.substring(0, $parentheseIndex))#else#set($comment=$column.columnComment)#end#if($parentheseIndex != -1)@Excel(name = "${comment}", readConverterExp = "$column.readConverterExp()")@TableField("`$column.columnName`")#elseif($column.javaType == 'Date')@JsonFormat(pattern = "yyyy-MM-dd")@Excel(name = "${comment}", width = 30, dateFormat = "yyyy-MM-dd")@TableField("`$column.columnName`")#else@Excel(name = "${comment}")@TableField("`$column.columnName`")#end#end#if($column.isPk == 1)@TableId(type = IdType.AUTO)#endprivate $column.javaType $column.javaField;#end
#end

2. mapper.java.vm

package ${packageName}.mapper;import java.util.List;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import ${packageName}.domain.${ClassName};
#if($table.sub)
import ${packageName}.domain.${subClassName};
#end/*** ${functionName}Mapper接口** @author ${author}* @date ${datetime}*/
public interface ${ClassName}Mapper extends BaseMapper<${ClassName}> {}

3. service.java.vm

package ${packageName}.service;import java.util.List;
import ${packageName}.domain.${ClassName};
import com.baomidou.mybatisplus.extension.service.IService;/*** ${functionName}Service接口** @author ${author}* @date ${datetime}*/
public interface I${ClassName}Service extends IService<${ClassName}> {}

4. serviceimpl.java.vm

package ${packageName}.service.impl;import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import java.util.List;#foreach ($column in $columns)#if($column.javaField == 'createTime' || $column.javaField == 'updateTime')import com.rchuing.common.utils.DateUtils;#break#end#end
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;#if($table.sub)import java.util.ArrayList;import com.rchuing.common.utils.StringUtils;import org.springframework.transaction.annotation.Transactional;import ${packageName}.domain.${subClassName};#end
import ${packageName}.mapper.${ClassName}Mapper;
import ${packageName}.domain.${ClassName};
import ${packageName}.service.I${ClassName}Service;/*** ${functionName}Service业务层处理** @author ${author}* @date ${datetime}*/
@Service
public class ${ClassName}ServiceImpl extends ServiceImpl<${ClassName}Mapper, ${ClassName}> implements I${ClassName}Service {}

5.sub-domain.java.vm

package ${packageName}.domain;#foreach ($import in $subImportList)import ${import};#end
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import com.rchuing.common.annotation.Excel;
import com.rchuing.common.core.domain.BaseEntity;/*** ${subTable.functionName}对象 ${subTableName}** @author ${author}* @date ${datetime}*/
public class ${subClassName} extends BaseEntity {
private static final long serialVersionUID = 1L;#foreach ($column in $subTable.columns)#if(!$table.isSuperColumn($column.javaField))/** $column.columnComment */#if($column.list)#set($parentheseIndex=$column.columnComment.indexOf("（"))#if($parentheseIndex != -1)#set($comment=$column.columnComment.substring(0, $parentheseIndex))#else#set($comment=$column.columnComment)#end#if($parentheseIndex != -1)@Excel(name = "${comment}", readConverterExp = "$column.readConverterExp()")#elseif($column.javaType == 'Date')@JsonFormat(pattern = "yyyy-MM-dd")@Excel(name = "${comment}", width = 30, dateFormat = "yyyy-MM-dd")#else@Excel(name = "${comment}")#end#endprivate $column.javaType $column.javaField;#end
#end
#foreach ($column in $subTable.columns)#if(!$table.isSuperColumn($column.javaField))#if($column.javaField.length() > 2 && $column.javaField.substring(1,2).matches("[A-Z]"))#set($AttrName=$column.javaField)#else#set($AttrName=$column.javaField.substring(0,1).toUpperCase() + ${column.javaField.substring(1)})#endpublic void set${AttrName}($column.javaType $column.javaField) {this.$column.javaField = $column.javaField;}public $column.javaType get${AttrName}() {return $column.javaField;}#end
#end@Override
public String toString() {return new ToStringBuilder(this,ToStringStyle.MULTI_LINE_STYLE)#foreach ($column in $subTable.columns)#if($column.javaField.length() > 2 && $column.javaField.substring(1,2).matches("[A-Z]"))#set($AttrName=$column.javaField)#else#set($AttrName=$column.javaField.substring(0,1).toUpperCase() + ${column.javaField.substring(1)})#end.append("${column.javaField}", get${AttrName}())#end.toString();}}