若依 MyBatis改为MyBatis-Plus

主要内容：升级成mybatis-plus，代码生成也是mybatis-plus版本

跟着我一步一步来，就可完成升级！

检查：启动程序，先保证若依能启动

第一步：添加依赖

        这里需要在两个地方添加，一个是最外面的父工程的pom.xml，一个是ruoyi-common的pom.xml。

        最外面的父工程的pom.xml：

        1.添加版本信息

代码：
<!--        mybatis-plus 版本--><mybatis-pluc.version>3.4.2</mybatis-pluc.version>

        2.添加mybatis-plus依赖

代码：

<!-- mybatis-plus 增强CRUD -->
<dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>3.4.2</version>
</dependency>

        ruoyi-common的pom.xml：

        1.直接继承父工程的依赖

第一步验证：

admin的包中的application.yml文件有mybatis-plus的提示，说明依赖弄好啦！

第二步：修改application.yml文件

        1.删除旧的mybatis配置

        2.写入新配置

        

代码：

# MyBatis Plus配置
mybatis-plus:# 搜索指定包别名   根据自己的项目来typeAliasesPackage: com.rchuing.sis.**.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.xmlglobal-config:enable-sql-runner: truedb-config:id-type: auto

第三步：重写mybatis配置文件

        1.在framework中，找到MybatisConfig文件，然后删除。

        

        2.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：

/*** 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();}
}

如图：

到这里Mybatis-plus就升级完成了。但代码生成里面还是以前mybatis的，这里也需要升级一下，方便代码生成。

第四步:把代码生成修改为mybatis-plus版本

1.在generator找到vm中的java文件夹

        

2.修改里面内容：这里直接上代码了，找到对应的直接复制粘贴就行。

2.1:domain.java.vm

package ${packageName}.domain;#foreach ($import in $importList)
import ${import};
#end
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import com.rchuing.sis.common.annotation.Excel;
#if($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
@TableName(resultMap = "${packageName}.mapper.${ClassName}Mapper.${ClassName}Result")
public class ${ClassName} extends ${Entity}{
private static final long serialVersionUID = 1L;#foreach ($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()")#elseif($column.javaType == 'Date')@JsonFormat(pattern = "yyyy-MM-dd")@Excel(name = "${comment}", width = 30, dateFormat = "yyyy-MM-dd")#else@Excel(name = "${comment}")#end#end#if($column.isPk == 1)@TableId(value = "$column.columnName",type = IdType.AUTO)#endprivate $column.javaType $column.javaField;#end
#end
#if($table.sub)
/** $table.subTable.functionName信息 */
private List<${subClassName}> ${subclassName}List;#end
#foreach ($column in $columns)#if(!$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 $column.javaField;}#end
#end#if($table.sub)
public List<${subClassName}> get${subClassName}List(){return ${subclassName}List;}public void set${subClassName}List(List<${subClassName}> ${subclassName}List){this.${subclassName}List = ${subclassName}List;}#end
@Override
public String toString() {return new ToStringBuilder(this,ToStringStyle.MULTI_LINE_STYLE)#foreach ($column in $columns)#if($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${AttrName}())#end#if($table.sub).append("${subclassName}List", get${subClassName}List())#end.toString();}}

2.2: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}> {/*** 查询${functionName}** @param ${pkColumn.javaField} ${functionName}主键* @return ${functionName}*/public ${ClassName} select${ClassName}By${pkColumn.capJavaField}(${pkColumn.javaType} ${pkColumn.javaField});/*** 查询${functionName}列表** @param ${className} ${functionName}* @return ${functionName}集合*/public List<${ClassName}> select${ClassName}List(${ClassName} ${className});/*** 新增${functionName}** @param ${className} ${functionName}* @return 结果*/public int insert${ClassName}(${ClassName} ${className});/*** 修改${functionName}** @param ${className} ${functionName}* @return 结果*/public int update${ClassName}(${ClassName} ${className});/*** 删除${functionName}** @param ${pkColumn.javaField} ${functionName}主键* @return 结果*/public int delete${ClassName}By${pkColumn.capJavaField}(${pkColumn.javaType} ${pkColumn.javaField});/*** 批量删除${functionName}** @param ${pkColumn.javaField}s 需要删除的数据主键集合* @return 结果*/public int delete${ClassName}By${pkColumn.capJavaField}s(${pkColumn.javaType}[] ${pkColumn.javaField}s);
#if($table.sub)/*** 批量删除${subTable.functionName}** @param ${pkColumn.javaField}s 需要删除的数据主键集合* @return 结果*/public int delete${subClassName}By${subTableFkClassName}s(${pkColumn.javaType}[] ${pkColumn.javaField}s);/*** 批量新增${subTable.functionName}** @param ${subclassName}List ${subTable.functionName}列表* @return 结果*/public int batch${subClassName}(List<${subClassName}> ${subclassName}List);/*** 通过${functionName}主键删除${subTable.functionName}信息** @param ${pkColumn.javaField} ${functionName}ID* @return 结果*/public int delete${subClassName}By${subTableFkClassName}(${pkColumn.javaType} ${pkColumn.javaField});
#end
}

2.3: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<${ClassName}> {/*** 查询${functionName}** @param ${pkColumn.javaField} ${functionName}主键* @return ${functionName}*/public ${ClassName} select${ClassName}By${pkColumn.capJavaField}(${pkColumn.javaType} ${pkColumn.javaField});/*** 查询${functionName}列表** @param ${className} ${functionName}* @return ${functionName}集合*/public List<${ClassName}> select${ClassName}List(${ClassName} ${className});/*** 新增${functionName}** @param ${className} ${functionName}* @return 结果*/public int insert${ClassName}(${ClassName} ${className});/*** 修改${functionName}** @param ${className} ${functionName}* @return 结果*/public int update${ClassName}(${ClassName} ${className});/*** 批量删除${functionName}** @param ${pkColumn.javaField}s 需要删除的${functionName}主键集合* @return 结果*/public int delete${ClassName}By${pkColumn.capJavaField}s(${pkColumn.javaType}[] ${pkColumn.javaField}s);/*** 删除${functionName}信息** @param ${pkColumn.javaField} ${functionName}主键* @return 结果*/public int delete${ClassName}By${pkColumn.capJavaField}(${pkColumn.javaType} ${pkColumn.javaField});
}

2.4: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 {@Autowiredprivate ${ClassName}Mapper ${className}Mapper;/*** 查询${functionName}** @param ${pkColumn.javaField} ${functionName}主键* @return ${functionName}*/@Overridepublic ${ClassName} select${ClassName}By${pkColumn.capJavaField}(${pkColumn.javaType} ${pkColumn.javaField}) {return ${className}Mapper.select${ClassName}By${pkColumn.capJavaField}(${pkColumn.javaField});}/*** 查询${functionName}列表** @param ${className} ${functionName}* @return ${functionName}*/@Overridepublic List<${ClassName}> select${ClassName}List(${ClassName} ${className}) {return ${className}Mapper.select${ClassName}List(${className});}/*** 新增${functionName}** @param ${className} ${functionName}* @return 结果*/
#if($table.sub)@Transactional
#end@Overridepublic int insert${ClassName}(${ClassName} ${className}) {
#foreach ($column in $columns)
#if($column.javaField == 'createTime')${className}.setCreateTime(DateUtils.getNowDate());
#end
#end
#if($table.sub)int rows = ${className}Mapper.insert${ClassName}(${className});insert${subClassName}(${className});return rows;
#elsereturn ${className}Mapper.insert${ClassName}(${className});
#end}/*** 修改${functionName}** @param ${className} ${functionName}* @return 结果*/
#if($table.sub)@Transactional
#end@Overridepublic int update${ClassName}(${ClassName} ${className}) {
#foreach ($column in $columns)
#if($column.javaField == 'updateTime')${className}.setUpdateTime(DateUtils.getNowDate());
#end
#end
#if($table.sub)${className}Mapper.delete${subClassName}By${subTableFkClassName}(${className}.get${pkColumn.capJavaField}());insert${subClassName}(${className});
#endreturn ${className}Mapper.update${ClassName}(${className});}/*** 批量删除${functionName}** @param ${pkColumn.javaField}s 需要删除的${functionName}主键* @return 结果*/
#if($table.sub)@Transactional
#end@Overridepublic int delete${ClassName}By${pkColumn.capJavaField}s(${pkColumn.javaType}[] ${pkColumn.javaField}s) {
#if($table.sub)${className}Mapper.delete${subClassName}By${subTableFkClassName}s(${pkColumn.javaField}s);
#endreturn ${className}Mapper.delete${ClassName}By${pkColumn.capJavaField}s(${pkColumn.javaField}s);}/*** 删除${functionName}信息** @param ${pkColumn.javaField} ${functionName}主键* @return 结果*/
#if($table.sub)@Transactional
#end@Overridepublic int delete${ClassName}By${pkColumn.capJavaField}(${pkColumn.javaType} ${pkColumn.javaField}) {
#if($table.sub)${className}Mapper.delete${subClassName}By${subTableFkClassName}(${pkColumn.javaField});
#endreturn ${className}Mapper.delete${ClassName}By${pkColumn.capJavaField}(${pkColumn.javaField});}
#if($table.sub)/*** 新增${subTable.functionName}信息** @param ${className} ${functionName}对象*/public void insert${subClassName}(${ClassName} ${className}) {List<${subClassName}> ${subclassName}List = ${className}.get${subClassName}List();${pkColumn.javaType} ${pkColumn.javaField} = ${className}.get${pkColumn.capJavaField}();if (StringUtils.isNotNull(${subclassName}List)){List<${subClassName}> list = new ArrayList<${subClassName}>();for (${subClassName} ${subclassName} : ${subclassName}List){${subclassName}.set${subTableFkClassName}(${pkColumn.javaField});list.add(${subclassName});}if (list.size() > 0){${className}Mapper.batch${subClassName}(list);}}}
#end
}

2.5: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 $column.javaField;}
#end
#end@Overridepublic String toString() {return new ToStringBuilder(this,ToStringStyle.MULTI_LINE_STYLE)
#foreach ($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();}
}

到这里就升级完成。

下面进行测试：

1.

2.

3.如果看到mybatis的东西，说明升级成功！

注意： 

1.这里可能有些包的路径不对，把爆红的包删除，重新导入就可！

2.因为实际项目路径不同，这里可能需要手动修改！

3.在BaseEntity类中