mybatis foreach

1.数组

public int deleteTIdcCqcByIds(Long[] ids);

<update id="deleteTIdcCqcByIds" parameterType="String">update biz_idc_cqc set del_flag = '1' where id in<foreach item="id" collection="array" open="(" separator="," close=")">#{id}</foreach>
</update>

2.查询的接口，参数为对象，其中一个属性lableIds是List ,并的关系

public List<BizMaintainFile> selectBizMaintainFileList(BizMaintainFile bizMaintainFile);

   <select id="selectBizMaintainFileList" parameterType="BizMaintainFile" resultMap="BizMaintainFileResult"><include refid="selectBizMaintainFileVo"/><where>del_flag = '0'<if test="fileName != null  and fileName != ''"> and file_name like concat('%', #{fileName}, '%')</if><if test="provinceId != null  and provinceId != ''"> and province_id = #{provinceId}</if><if test="lableIds != null  and lableIds != ''"><foreach item="id" collection="lableIds" index="index" separator=" ">and find_in_set(#{id},lable_id)>0</foreach></if><if test="fileSource != null  and fileSource != ''"> and file_source = #{fileSource}</if><if test="fileUrl != null  and fileUrl != ''"> and file_url = #{fileUrl}</if></where>order by create_time</select>

3.传过来一个对象，对象的一个字段属性为list，ids为list<String>,provinceIds为List<String>

  <select id="selectAllTIdcCqcList" resultType="com.idc.business.domain.BizIdcCqc">SELECTts.id,td.id AS data_center_id,IFNULL( certification_status, 3 ) certification_status ,td.city_id,td.NAME,td.province_id,td.CODE,ts.data_center_level,ts.cqc_grade,ts.is_cqc_certification_data,ts.specification_version,ts.is_carry_certification,ts.principal,ts.principal_phone,ts.data_center_address,ts.data_center_specification,ts.cooperation_model,ts.validity,ts.certificate_number,ts.file_url,ts.file_name,del_flag,br.name as provinceName,brc.name as cityNameFROMbiz_data_center tdLEFT JOIN (<include refid="selectTIdcCqcVo"/>where del_flag = '0') ts ON td.id = ts.data_center_idleft join biz_region br on td.province_id = br.idleft join biz_region brc on td.city_id = brc.id<where><if test="dataCenterId != null  and dataCenterId != ''"> and td.id = #{dataCenterId}</if><if test="name != null  and name != ''"> and NAME like concat('%', #{name}, '%')</if><if test="provinceId != null  and provinceId != ''"> and td.province_id = #{provinceId}</if><if test="cityId != null  and cityId != ''"> and td.city_id = #{cityId}</if><if test="code != null  and code != ''"> and CODE = #{code}</if><if test="dataCenterLevel != null  and dataCenterLevel != ''"> and data_center_level = #{dataCenterLevel}</if><if test="cqcGrade != null  and cqcGrade != ''"> and cqc_grade = #{cqcGrade}</if><if test="specificationVersion != null  and specificationVersion != ''"> and specification_version = #{specificationVersion}</if><if test="isCarryCertification != null  and isCarryCertification != ''"> and is_carry_certification = #{isCarryCertification}</if><if test="principal != null  and principal != ''"> and principal = #{principal}</if><if test="principalPhone != null  and principalPhone != ''"> and principal_phone = #{principalPhone}</if><if test="dataCenterAddress != null  and dataCenterAddress != ''"> and data_center_address = #{dataCenterAddress}</if><if test="dataCenterSpecification != null  and dataCenterSpecification != ''"> and data_center_specification = #{dataCenterSpecification}</if><if test="cooperationModel != null  and cooperationModel != ''"> and cooperation_model = #{cooperationModel}</if><if test="validity != null"> and validity = #{validity}</if><if test="params.beginTime != null and params.beginTime != ''"><!-- 开始时间检索 -->AND date_format(is_cqc_certification_data,'%y%m%d') &gt;= date_format(#{params.beginTime},'%y%m%d')</if><if test="params.endTime != null and params.endTime != ''"><!-- 结束时间检索 -->AND date_format(is_cqc_certification_data,'%y%m%d') &lt;= date_format(#{params.endTime},'%y%m%d')</if><if test="params.validityBeginTime != null and params.validityBeginTime != ''"><!-- 开始时间检索 -->AND date_format(validity,'%y%m%d') &gt;= date_format(#{params.validityBeginTime},'%y%m%d')</if><if test="params.validityEndTime != null and params.validityEndTime != ''"><!-- 结束时间检索 -->AND date_format(validity,'%y%m%d') &lt;= date_format(#{params.validityEndTime},'%y%m%d')</if><if test="ids != null and ids != ''">and data_center_id in<foreach item="id" collection="ids" open="(" separator="," close=")">#{id}</foreach></if><if test="provinceIds != null and provinceIds != ''">and td.province_id in<foreach item="id" collection="provinceIds" open="(" separator="," close=")">#{id}</foreach></if><if test="certificationStatus != null  and certificationStatus != ''"> and certification_status = #{certificationStatus}</if></where>ORDER BY certification_status</select>

对象：

@ApiModel(value = "CQC")
public class BizIdcCqc extends BaseEntity
{private static final long serialVersionUID = 1L;/** 主键 */@ApiModelProperty(value = "唯一标识")private Long id;/** 数据中心id */@ApiModelProperty(value = "数据中心id")private String dataCenterId;/** 数据中心名字 */@ApiModelProperty(value = "数据中心名字")@Excel(name = "数据中心名字")private String name;/** 所在省份 */@ApiModelProperty(value = "所在省份")private String provinceId;@Excel(name = "所在省份")private String provinceName;/** 所在城市 */@ApiModelProperty(value = "所在城市")private String cityId;@Excel(name = "所在城市")private String cityName;/** 数据中心编码 */@ApiModelProperty(value = "数据中心编码")@Excel(name = "数据中心编码")private String code;/** idc中心星级 */@ApiModelProperty(value = "idc中心星级")@Excel(name = "idc中心星级")private String dataCenterLevel;/** CQC认证等级 */@ApiModelProperty(value = "CQC认证等级")@Excel(name = "CQC认证等级")private String cqcGrade;/** 最近一次完成CQC认证时间 */@ApiModelProperty(value = "最近一次完成CQC认证时间")@Excel(name = "最近一次完成CQC认证时间", width = 30, dateFormat = "yyyy-MM-dd HH:mm:ss", type = Excel.Type.ALL)@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")private Date isCqcCertificationData;/** 认证技术规范版本 */@ApiModelProperty(value = "认证技术规范版本")@Excel(name = "认证技术规范版本")private String specificationVersion;/** 是否开展CQC认证 */@ApiModelProperty(value = "是否开展CQC认证")@Excel(name = "是否开展CQC认证")private String isCarryCertification;/** 数据中心负责人 */@ApiModelProperty(value = "数据中心负责人")@Excel(name = "数据中心负责人")private String principal;/** 数据中心负责人电话 */@ApiModelProperty(value = "数据中心负责人电话")@Excel(name = "数据中心负责人电话")private String principalPhone;/** 数据中心地址 */@ApiModelProperty(value = "数据中心地址")@Excel(name = "数据中心地址")private String dataCenterAddress;/** 数据中心规格 */@ApiModelProperty(value = "数据中心规格")@Excel(name = "数据中心规格")private String dataCenterSpecification;/** 合作模式 */@ApiModelProperty(value = "合作模式")@Excel(name = "合作模式")private String cooperationModel;/** 是否删除 (0代表存在 1代表删除) */@ApiModelProperty(value = "是否删除 (0代表存在 1代表删除)")private String delFlag;/** 区域id集合 */@ApiModelProperty(value = "区域id集合")private List<String> ids;/** 省id集合 */@ApiModelProperty(value = "省id集合")private List<String> provinceIds;/*** 有效期*/@ApiModelProperty(value = "有效期")@Excel(name = "有效期", width = 30, dateFormat = "yyyy-MM-dd HH:mm:ss", type = Excel.Type.ALL)@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")private Date validity;/*** 证书编号*/@ApiModelProperty(value = "证书编号")@Excel(name = "证书编号")private String certificateNumber;/*** 认证状态*/@ApiModelProperty(value = "认证状态 1=认证在途,2=已认证,3=未认证")@Excel(name = "认证状态", readConverterExp = "1=认证在途,2=已认证,3=未认证")private String certificationStatus;/*** 文件路径*/private String fileUrl;/*** 文件名称*/private String fileName;public String getFileUrl() {return fileUrl;}public void setFileUrl(String fileUrl) {this.fileUrl = fileUrl;}public String getFileName() {return fileName;}public void setFileName(String fileName) {this.fileName = fileName;}public String getProvinceName() {return provinceName;}public void setProvinceName(String provinceName) {this.provinceName = provinceName;}public String getCityName() {return cityName;}public void setCityName(String cityName) {this.cityName = cityName;}public String getCertificationStatus() {return certificationStatus;}public void setCertificationStatus(String certificationStatus) {this.certificationStatus = certificationStatus;}public Date getValidity() {return validity;}public void setValidity(Date validity) {this.validity = validity;}public String getCertificateNumber() {return certificateNumber;}public void setCertificateNumber(String certificateNumber) {this.certificateNumber = certificateNumber;}public List<String> getProvinceIds() {return provinceIds;}public void setProvinceIds(List<String> provinceIds) {this.provinceIds = provinceIds;}public List<String> getIds() {return ids;}public void setIds(List<String> ids) {this.ids = ids;}public void setId(Long id){this.id = id;}public Long getId(){return id;}public void setDataCenterId(String dataCenterId){this.dataCenterId = dataCenterId;}public String getDataCenterId(){return dataCenterId;}public void setName(String name){this.name = name;}public String getName(){return name;}public void setProvinceId(String provinceId){this.provinceId = provinceId;}public String getProvinceId(){return provinceId;}public void setCityId(String cityId){this.cityId = cityId;}public String getCityId(){return cityId;}public void setCode(String code){this.code = code;}public String getCode(){return code;}public void setDataCenterLevel(String dataCenterLevel){this.dataCenterLevel = dataCenterLevel;}public String getDataCenterLevel(){return dataCenterLevel;}public void setCqcGrade(String cqcGrade){this.cqcGrade = cqcGrade;}public String getCqcGrade(){return cqcGrade;}public Date getIsCqcCertificationData() {return isCqcCertificationData;}public void setIsCqcCertificationData(Date isCqcCertificationData) {this.isCqcCertificationData = isCqcCertificationData;}public void setSpecificationVersion(String specificationVersion){this.specificationVersion = specificationVersion;}public String getSpecificationVersion(){return specificationVersion;}public void setIsCarryCertification(String isCarryCertification){this.isCarryCertification = isCarryCertification;}public String getIsCarryCertification(){return isCarryCertification;}public void setPrincipal(String principal){this.principal = principal;}public String getPrincipal(){return principal;}public void setPrincipalPhone(String principalPhone){this.principalPhone = principalPhone;}public String getPrincipalPhone(){return principalPhone;}public void setDataCenterAddress(String dataCenterAddress){this.dataCenterAddress = dataCenterAddress;}public String getDataCenterAddress(){return dataCenterAddress;}public void setDataCenterSpecification(String dataCenterSpecification){this.dataCenterSpecification = dataCenterSpecification;}public String getDataCenterSpecification(){return dataCenterSpecification;}public void setCooperationModel(String cooperationModel){this.cooperationModel = cooperationModel;}public String getCooperationModel(){return cooperationModel;}public void setDelFlag(String delFlag){this.delFlag = delFlag;}public String getDelFlag(){return delFlag;}@Overridepublic String toString() {return new ToStringBuilder(this,ToStringStyle.MULTI_LINE_STYLE).append("id", getId()).append("dataCenterId", getDataCenterId()).append("name", getName()).append("provinceId", getProvinceId()).append("cityId", getCityId()).append("code", getCode()).append("dataCenterLevel", getDataCenterLevel()).append("cqcGrade", getCqcGrade()).append("isCqcCertificationData", getIsCqcCertificationData()).append("specificationVersion", getSpecificationVersion()).append("isCarryCertification", getIsCarryCertification()).append("principal", getPrincipal()).append("principalPhone", getPrincipalPhone()).append("dataCenterAddress", getDataCenterAddress()).append("dataCenterSpecification", getDataCenterSpecification()).append("cooperationModel", getCooperationModel()).append("delFlag", getDelFlag()).append("createBy", getCreateBy()).append("createTime", getCreateTime()).append("updateTime", getUpdateTime()).toString();}
}

3.插入批量

    int insterBatch(List<TFullResourceHistoryDataDTO> fullResourceList);

    <insert id="insterBatch" parameterType="com.idc.business.domain.dto.TFullResourceHistoryDataDTO">insert into biz_full_resource_history_data(city_id,name,building_num,room_num,cabinet_num,vip_space_num,band_width,ubit_num,ipv4_num,ipv6_num,station_num,parent_id,month_date,create_time,update_time,network_device_num,town_id)values<foreach collection="list" item="item" index="index" separator=",">( #{item.regionId},#{item.name},#{item.buildingNum},#{item.roomNum},#{item.cabinetNum},#{item.vipSpaceNum},#{item.bandWidth},#{item.ubitNum},#{item.ipv4Num},#{item.ipv6Num},#{item.stationNum},#{item.parentId},#{item.monthDate},#{item.createTime},#{item.updateTime},#{item.networkDeviceNum},#{item.townId})</foreach></insert>

4.map 多个参数，其中一个参数key为dataPermissionList

String selectSumBandWidth(Map<String, Object> map);

    <select id="selectSumBandWidth" parameterType="Map" resultType="String">select IFNULL(sum(band_width),0) as bandWidth from biz_full_resource_history_data<where>month_date = #{monthDate}<if test="parentId != null">and parent_id = #{parentId}</if><if test="dataPermissionList != null and dataPermissionList != ''">and city_id in<foreach item="id" collection="dataPermissionList" open="(" separator="," close=")">#{id}</foreach></if></where></select>

4.单个参数，参数类型List

<!-- 批量保存(foreach插入多条数据两种方法)int addEmpsBatch(@Param("emps") List<Employee> emps); -->
<!-- MySQL下批量保存，可以foreach遍历 mysql支持values(),(),()语法 --> //推荐使用
<insert id="addEmpsBatch">INSERT INTO emp(ename,gender,email,did)VALUES<foreach collection="emps" item="emp" separator=",">(#{emp.eName},#{emp.gender},#{emp.email},#{emp.dept.id})</foreach>
</insert>

注：单个参数，多个参数的区别
https://blog.csdn.net/QGhurt/article/details/108018737?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522165051167516781685324757%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=165051167516781685324757&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduend~default-2-108018737.142^v9^pc_search_result_control_group,157^v4^new_style&utm_term=mybatis+%E6%98%A0%E5%B0%84&spm=1018.2226.3001.4187

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