若依 MyBatis改为MyBatis-Plus
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· 阅读数 5
一、添加pom依赖
添加 mybatis-plus依赖、删除mybatis依赖,我用的是ruoyi 3.8.5，主pom里面已经没有了mybatis的依赖，如果有的话注释一下
<!--<dependency>
<groupId>org.mybatis.spring.boot.starter</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>${mybatis.version}</version>
</dependency>-->
这里添加mybatisplus依赖
<pagehelper.boot.version>1.4.6</pagehelper.boot.version>
<mybatis-plus.version>3.5.2</mybatis-plus.version>
<!--mybatis-plus-->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>${mybatis-plus.version}</version>
</dependency>
<!-- pagehelper 分页插件 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>${pagehelper.boot.version}</version>
<exclusions>
<exclusion>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
</exclusion>
</exclusions>
</dependency>
注意：一定要做mybatis依赖的移除，否则pagehelper还是依赖mybatis会与plus冲突，报错。
二、ruoyi-common下的pom.xml添加依赖
<!--mybatis-plus-->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
</dependency>
<!-- pagehelper 分页插件 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
</dependency>
解释一下为什么要在这里再次添加mybatis-plus依赖。根目录的依赖是放到了dependencyManagement标签里了，是声明，并没有真正引用，当子模块用到了相应的依赖时需要在自己的pom里再引用进来，此时不用写版本号，因为声明时已规定好了。现在common模块需要引用mymatis-plus，所以需要在这里添加进来。那为什么之前使用mybatis的时候这个pom里没有引用mybatis的依赖呢？是因为common模块还引用了分页插件，还记得上一步时我移除了分页插件中的mybatis依赖吗？因为分页插件本身依赖了mybatis，所以之前common可以不引用mybatis，但是现在mybatis已被移除，所以必须重新引入mybatis-plus，否则代码会报错。若依单模块版本就不会出现这个问题。
三、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.ruoyi.**.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.ruoyi.**.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
四、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：
/**
* 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();
}
}
五、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 ${import};
#end
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import com.rchuing.sis.common.annotation.Excel;
#if($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)
#end
private $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() + ${column.javaField.substring(1)})
#end
public void set${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. 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
}
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});
}
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 {
@Autowired
private ${ClassName}Mapper ${className}Mapper;
/**
* 查询${functionName}
*
* @param ${pkColumn.javaField} ${functionName}主键
* @return ${functionName}
*/
@Override
public ${ClassName} select${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 ${functionName}
*/
@Override
public List<${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
@Override
public 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;
#else
return ${className}Mapper.insert${ClassName}(${className});
#end
}
/**
* 修改${functionName}
*
* @param ${className} ${functionName}
* @return 结果
*/
#if($table.sub)
@Transactional
#end
@Override
public 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});
#end
return ${className}Mapper.update${ClassName}(${className});
}
/**
* 批量删除${functionName}
*
* @param ${pkColumn.javaField}s 需要删除的${functionName}主键
* @return 结果
*/
#if($table.sub)
@Transactional
#end
@Override
public int delete${ClassName}By${pkColumn.capJavaField}s(${pkColumn.javaType}[] ${pkColumn.javaField}s) {
#if($table.sub)
${className}Mapper.delete${subClassName}By${subTableFkClassName}s(${pkColumn.javaField}s);
#end
return ${className}Mapper.delete${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
@Override
public int delete${ClassName}By${pkColumn.capJavaField}(${pkColumn.javaType} ${pkColumn.javaField}) {
#if($table.sub)
${className}Mapper.delete${subClassName}By${subTableFkClassName}(${pkColumn.javaField});
#end
return ${className}Mapper.delete${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
}
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
#end
private $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() + ${column.javaField.substring(1)})
#end
public void set${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();
}
}
六、测试
系统工具 -> 代码生成 -> 预览
七、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
