溫馨提示×
您好，登錄后才能下訂單哦！
點擊 登錄注冊 即表示同意《億速云用戶服務條款》
您好，登錄后才能下訂單哦！
這篇文章主要講解了“Java中easypoi導入校驗的方法是什么”，文中的講解內容簡單清晰，易于學習與理解，下面請大家跟著小編的思路慢慢深入，一起來研究和學習“Java中easypoi導入校驗的方法是什么”吧！
現在產品需要對導入的Excel進行校驗，不合法的Excel不允許入庫，需要返回具體的錯誤信息給前端，提示給用戶，錯誤信息中需要包含行號以及對應的錯誤。
因為 EasyPOI 支持 Hibernate Validator ，所以直接使用就可以了，因為要將錯誤信息以及錯誤行號返回，所以需要用到 EasyPOI 的高級用法，實現 IExcelDataModel與 IExcelModel接口，IExcelDataModel負責設置行號，IExcelModel 負責設置錯誤信息
如果使用到了 @Pattern 注解，則字段類型必須是 String 類型，否則會拋出異常
本文中的原 Integer 類型的 gender 修改成為 String 類型的 genderStr，record 字段也修改為了 String 類型的 recordStr等等
同理如果校驗 Date 類型字段，先將類型改成String，正則表達式參考下文寫法。也就是說原本Integer類型的
這里需要注意，如果@Excel注解中設置了 replace 屬性，則Hibernate Validator 校驗的是替換后的值
導出時候的實體類
@Data
public class TalentUserInputEntity{
@Excel(name = "姓名*")
private String name;
@Excel(name = "性別*")
private Integer gender;
@Excel(name = "手機號*")
private String phone;
@Excel(name = "開始工作時間*")
private Date workTime;
@Excel(name = "民族*")
private String national;
@Excel(name = "語言水平*")
private String languageProficiency;
@Excel(name = "出生日期*")
private Date birth;
@Excel(name = "職位*")
private String jobsName;
@Excel(name = "職位類型*")
private String categoryName;
@Excel(name = "薪資*")
private Integer salary;
@Excel(name = "工作地點*")
private String workArea;
@ExcelCollection(name = "工作經歷*")
private List<ExperienceInputEntity> experienceList;
@ExcelCollection(name = "教育經歷*")
private List<EducationInputEntity> educationList;
@ExcelCollection(name = "獲獎情況")
private List<AwardsInputEntity> awardList;
@ExcelCollection(name = "技能證書")
private List<PunishmentInputEntity> punishmentList;
@Excel(name = "特長")
private String specialty;
}導入時候的實體類
@Data
public class TalentUserInputEntity implements IExcelDataModel, IExcelModel {
// 時間格式校驗正則
public static final String DATE_REGEXP = "(Mon|Tue|Wed|Thu|Fri|Sat|Sun)( )(Dec|Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov)( )\\d{2}( )(00:00:00)( )(CST)( )\\d{4}";
/**
* 行號
*/
private int rowNum;
/**
* 錯誤消息
*/
private String errorMsg;
@Excel(name = "姓名*")
@NotBlank(message = "[姓名]不能為空")
private String name;
@Excel(name = "性別*", replace = {"男_0", "女_1"})
@Pattern(regexp = "[01]", message = "性別錯誤")
private String genderStr;
@Excel(name = "手機號*")
private String phone;
@Excel(name = "開始工作時間*")
@Pattern(regexp = DATE_REGEXP, message = "[開始工作時間]時間格式錯誤")
private String workTimeStr;
@Excel(name = "民族*")
@NotBlank(message = "[民族]不能為空")
private String national;
@Excel(name = "語言水平*")
@NotBlank(message = "[語言水平]不能為空")
private String languageProficiency;
@Excel(name = "出生日期*")
@Pattern(regexp = DATE_REGEXP, message = "[出生日期]時間格式錯誤")
private String birthStr;
@Excel(name = "職位*")
@NotBlank(message = "[職位]不能為空")
private String jobsName;
@Excel(name = "職位類型*")
@NotBlank(message = "[職位類型]不能為空")
private String categoryName;
@Excel(name = "薪資*", replace = {"3K以下_1", "3K-5K_2", "5K-10K_3", "10K-20K_4", "20K-50K_5", "50K以上_6"})
@Pattern(regexp = "[123456]", message = "薪資信息錯誤")
private String salaryStr;
@Excel(name = "工作地點*")
@NotBlank(message = "[工作地點]不能為空")
private String workArea;
@ExcelCollection(name = "工作經歷*")
private List<ExperienceInputEntity> experienceList;
@ExcelCollection(name = "教育經歷*")
private List<EducationInputEntity> educationList;
@ExcelCollection(name = "獲獎情況")
private List<AwardsInputEntity> awardList;
@ExcelCollection(name = "技能證書")
private List<PunishmentInputEntity> punishmentList;
@Excel(name = "特長")
private String specialty;
@Override
public String getErrorMsg() {
return errorMsg;
}
@Override
public void setErrorMsg(String errorMsg) {
this.errorMsg = errorMsg;
}
@Override
public Integer getRowNum() {
return rowNum;
}
@Override
public void setRowNum(Integer rowNum) {
this.rowNum = rowNum;
}
// 工作經歷
@Data
public class ExperienceInputEntity {
@Excel(name = "公司名稱*")
private String companyName;
@Excel(name = "所在行業*")
private String industry;
@Excel(name = "開始時間*")
@Pattern(regexp = DATE_REGEXP, message = "[工作經歷][開始時間]時間格式錯誤")
private String beginTimeStr;
@Excel(name = "結束時間*")
@Pattern(regexp = DATE_REGEXP, message = "[工作經歷][結束時間]時間格式錯誤")
private String finishTimeStr;
@Excel(name = "職位名稱*")
private String jobTitle;
@Excel(name = "所屬部門*")
private String department;
@Excel(name = "工作內容*")
private String description;
}
// 教育經歷
@Data
public class EducationInputEntity {
@Excel(name = "學校*")
private String schoolName;
@Excel(name = "學歷*", replace = {"初中及以下_1", "中專_2", "高中_3", "大專_4", "本科_5", "碩士_6", "博士_7"})
@Pattern(regexp = "[1234567]", message = "學歷信息錯誤")
private String recordStr;
@Excel(name = "開始年份*")
@Pattern(regexp = DATE_REGEXP, message = "[教育經歷][開始年份]時間格式錯誤")
private String beginTimeStr;
@Excel(name = "畢業年份*")
@Pattern(regexp = DATE_REGEXP, message = "[教育經歷][畢業年份]時間格式錯誤")
private String finishTimeStr;
@Excel(name = "專業*")
private String profession;
}
}上文所作的校驗只是一些基本的校驗，可能會有諸如Excel中重復行校驗，Excel中數據與數據庫重復校驗等等。這種校驗就無法通過 Hibernate Validator 來完成，只能寫代碼來實現校驗邏輯了。
首先從簡單的Excel數據與數據庫值重復校驗開始。為了便于演示，就不引入數據庫了，直接Mock一些數據用來判斷是否重復。
@Service
public class MockTalentDataService {
private static List<TalentUser> talentUsers = new ArrayList<>();
static {
TalentUser u1 = new TalentUser(1L, "凌風", "18311342567");
TalentUser u2 = new TalentUser(2L, "張三", "18512343567");
TalentUser u3 = new TalentUser(3L, "李四", "18902343267");
talentUsers.add(u1);
talentUsers.add(u2);
talentUsers.add(u3);
}
/**
* 校驗是否重復
*/
public boolean checkForDuplicates(String name, String phone) {
// 姓名與手機號相等個數不等于0則為重復
return talentUsers.stream().anyMatch(e -> e.getName().equals(name) && e.getPhone().equals(phone));
}
}其中Mock數據中 ID 為 1 的數據與示例Excel2 中的數據是重復的。
EasyPOI 提供了校驗的接口，這需要我們自己寫一個用于校驗的類。在這個類中，可以對導入時的每一行數據進行校驗，框架通過 ExcelVerifyHandlerResult 對象來判斷是否校驗通過，校驗不通過需要傳遞 ErrorMsg。
@Component
public class TalentImportVerifyHandler implements IExcelVerifyHandler<TalentUserInputEntity> {
@Resource
private MockTalentDataService mockTalentDataService;
@Override
public ExcelVerifyHandlerResult verifyHandler(TalentUserInputEntity inputEntity) {
StringJoiner joiner = new StringJoiner(",");
// 根據姓名與手機號判斷數據是否重復
String name = inputEntity.getName();
String phone = inputEntity.getPhone();
// mock 數據庫
boolean duplicates = mockTalentDataService.checkForDuplicates(name, phone);
if (duplicates) {
joiner.add("數據與數據庫數據重復");
}
if (joiner.length() != 0) {
return new ExcelVerifyHandlerResult(false, joiner.toString());
}
return new ExcelVerifyHandlerResult(true);
}
}修改校驗處代碼，設置校驗類對象。
@Resource
private TalentImportVerifyHandler talentImportVerifyHandler;
@PostMapping("/upload")
public Boolean upload(@RequestParam("file") MultipartFile multipartFile) throws Exception {
ImportParams params = new ImportParams();
// 表頭設置為2行
params.setHeadRows(2);
// 標題行設置為0行，默認是0，可以不設置
params.setTitleRows(0);
// 開啟Excel校驗
params.setNeedVerfiy(true);
params.setVerifyHandler(talentImportVerifyHandler);
ExcelImportResult<TalentUserInputEntity> result = ExcelImportUtil.importExcelMore(multipartFile.getInputStream(),
TalentUserInputEntity.class, params);
System.out.println("是否校驗失敗: " + result.isVerfiyFail());
System.out.println("校驗失敗的集合:" + JSONObject.toJSONString(result.getFailList()));
System.out.println("校驗通過的集合:" + JSONObject.toJSONString(result.getList()));
for (TalentUserInputEntity entity : result.getFailList()) {
int line = entity.getRowNum() + 1;
String msg = "第" + line + "行的錯誤是：" + entity.getErrorMsg();
System.out.println(msg);
}
return true;
}上傳 示例Excel2 文件測試，結果輸出：
而第七行的數據正是與Mock中的數據相重復的。
上文中還有一個待解決的問題，就是Collection中的對象添加了Hibernate Validator 注解校驗但是并未生效的問題，現在就來解決一下。上一步中實現了導入對象的校驗類，校驗類會校驗Excel中的每一條數據， 那我是不是可以直接在校驗類中校驗Collection中對象了呢？實踐證明行不通，因為這個校驗類的verifyHandler方法只會被調用一次，所以Collection中只有一條記錄。既然這里行不通的話，就只能對導入結果再進行校驗了。
因為Collection中的數據EasyPOI校驗不到，所以有問題的數據也可能會被框架放到result.getList()中而不是result.getFailList() 中，為了校驗需要將兩個集合合并為一個集合，使用 EasyPOI 自帶的工具類 PoiValidationUtil 進行校驗 Collection 中的對象。
@Resource
private TalentImportVerifyHandler talentImportVerifyHandler;
@PostMapping("/upload")
public Boolean upload(@RequestParam("file") MultipartFile multipartFile) throws Exception {
ImportParams params = new ImportParams();
// 表頭設置為2行
params.setHeadRows(2);
// 標題行設置為0行，默認是0，可以不設置
params.setTitleRows(0);
// 開啟Excel校驗
params.setNeedVerfiy(true);
params.setVerifyHandler(talentImportVerifyHandler);
ExcelImportResult<TalentUserInputEntity> result = ExcelImportUtil.importExcelMore(multipartFile.getInputStream(),
TalentUserInputEntity.class, params);
System.out.println("是否校驗失敗: " + result.isVerfiyFail());
System.out.println("校驗失敗的集合:" + JSONObject.toJSONString(result.getFailList()));
System.out.println("校驗通過的集合:" + JSONObject.toJSONString(result.getList()));
// 合并結果集
List<TalentUserInputEntity> resultList = new ArrayList<>();
resultList.addAll(result.getFailList());
resultList.addAll(result.getList());
for (TalentUserInputEntity inputEntity : resultList) {
StringJoiner joiner = new StringJoiner(",");
joiner.add(inputEntity.getErrorMsg());
// 校驗Collection的元素
inputEntity.getExperienceList().forEach(e -> verify(joiner, e));
inputEntity.getEducationList().forEach(e -> verify(joiner, e));
inputEntity.getAwardList().forEach(e -> verify(joiner, e));
inputEntity.getPunishmentList().forEach(e -> verify(joiner, e));
inputEntity.setErrorMsg(joiner.toString());
}
for (TalentUserInputEntity entity : result.getFailList()) {
int line = entity.getRowNum() + 1;
String msg = "第" + line + "行的錯誤是：" + entity.getErrorMsg();
System.out.println(msg);
}
return true;
}
private void verify(StringJoiner joiner, Object object) {
String validationMsg = PoiValidationUtil.validation(object, null);
if (StringUtils.isNotEmpty(validationMsg)) {
joiner.add(validationMsg);
}
}上傳 示例Excel2 ，結果如下：
上文中對Excel中數據與數據庫數據進行重復校驗，可有些需求是要求數據庫在入庫前需要對Excel的的重復行進行校驗。這需要在校驗類中完成，但校驗類中并沒有全部行的數據，該如何實現呢？博主的做法是將導入的數據放到 ThreadLocal 中進行暫存，從而達到在校驗類中校驗Excel重復行的目的。ThreadLocal使用注意完之后一定要及時清理！
首先定義什么叫重復行，完全相同的兩行是重復行，本文中設定name 與 phone 相同的行為重復行，由于只需要比較這兩個字段，所以我們需要重寫導入對象的equals與hashCode方法。
@Data
public class TalentUserInputEntity implements IExcelDataModel, IExcelModel {
// 時間格式校驗正則
public static final String DATE_REGEXP = "(Mon|Tue|Wed|Thu|Fri|Sat|Sun)( )(Dec|Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov)( )\\d{2}( )(00:00:00)( )(CST)( )\\d{4}";
/**
* 行號
*/
private int rowNum;
/**
* 錯誤消息
*/
private String errorMsg;
@Excel(name = "姓名*")
@NotBlank(message = "[姓名]不能為空")
private String name;
@Excel(name = "性別*", replace = {"男_0", "女_1"})
@Pattern(regexp = "[01]", message = "性別錯誤")
private String genderStr;
@Excel(name = "手機號*")
@Pattern(regexp = "[0-9]{11}", message = "手機號不正確")
private String phone;
@Excel(name = "開始工作時間*")
@Pattern(regexp = DATE_REGEXP, message = "[開始工作時間]時間格式錯誤")
private String workTimeStr;
@Excel(name = "民族*")
@NotBlank(message = "[民族]不能為空")
private String national;
@Excel(name = "語言水平*")
@NotBlank(message = "[語言水平]不能為空")
private String languageProficiency;
@Excel(name = "出生日期*")
@Pattern(regexp = DATE_REGEXP, message = "[出生日期]時間格式錯誤")
private String birthStr;
@Excel(name = "職位*")
@NotBlank(message = "[職位]不能為空")
private String jobsName;
@Excel(name = "職位類型*")
@NotBlank(message = "[職位類型]不能為空")
private String categoryName;
@Excel(name = "薪資*", replace = {"3K以下_1", "3K-5K_2", "5K-10K_3", "10K-20K_4", "20K-50K_5", "50K以上_6"})
@Pattern(regexp = "[123456]", message = "薪資信息錯誤")
private String salaryStr;
@Excel(name = "工作地點*")
@NotBlank(message = "[工作地點]不能為空")
private String workArea;
@ExcelCollection(name = "工作經歷*")
private List<ExperienceInputEntity> experienceList;
@ExcelCollection(name = "教育經歷*")
private List<EducationInputEntity> educationList;
@ExcelCollection(name = "獲獎情況")
private List<AwardsInputEntity> awardList;
@ExcelCollection(name = "技能證書")
private List<PunishmentInputEntity> punishmentList;
@Excel(name = "特長")
private String specialty;
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
TalentUserInputEntity that = (TalentUserInputEntity) o;
return Objects.equals(name, that.name) &&
Objects.equals(phone, that.phone);
}
@Override
public int hashCode() {
return Objects.hash(name, phone);
}
@Override
public String getErrorMsg() {
return errorMsg;
}
@Override
public void setErrorMsg(String errorMsg) {
this.errorMsg = errorMsg;
}
@Override
public Integer getRowNum() {
return rowNum;
}
@Override
public void setRowNum(Integer rowNum) {
this.rowNum = rowNum;
}
}修改校驗類代碼，實現重復行的校驗邏輯
@Component
public class TalentImportVerifyHandler implements IExcelVerifyHandler<TalentUserInputEntity> {
private final ThreadLocal<List<TalentUserInputEntity>> threadLocal = new ThreadLocal<>();
@Resource
private MockTalentDataService mockTalentDataService;
@Override
public ExcelVerifyHandlerResult verifyHandler(TalentUserInputEntity inputEntity) {
StringJoiner joiner = new StringJoiner(",");
// 根據姓名與手機號判斷數據是否重復
String name = inputEntity.getName();
String phone = inputEntity.getPhone();
// mock 數據庫
boolean duplicates = mockTalentDataService.checkForDuplicates(name, phone);
if (duplicates) {
joiner.add("數據與數據庫數據重復");
}
List<TalentUserInputEntity> threadLocalVal = threadLocal.get();
if (threadLocalVal == null) {
threadLocalVal = new ArrayList<>();
}
threadLocalVal.forEach(e -> {
if (e.equals(inputEntity)) {
int lineNumber = e.getRowNum() + 1;
joiner.add("數據與第" + lineNumber + "行重復");
}
});
// 添加本行數據對象到ThreadLocal中
threadLocalVal.add(inputEntity);
threadLocal.set(threadLocalVal);
if (joiner.length() != 0) {
return new ExcelVerifyHandlerResult(false, joiner.toString());
}
return new ExcelVerifyHandlerResult(true);
}
public ThreadLocal<List<TalentUserInputEntity>> getThreadLocal() {
return threadLocal;
}
}由于校驗類中使用了ThreadLocal，因此需要及時釋放，修改導入處的代碼。
@Resource
private TalentImportVerifyHandler talentImportVerifyHandler;
@PostMapping("/upload")
public Boolean upload(@RequestParam("file") MultipartFile multipartFile) throws Exception {
ExcelImportResult<TalentUserInputEntity> result;
try {
ImportParams params = new ImportParams();
// 表頭設置為2行
params.setHeadRows(2);
// 標題行設置為0行，默認是0，可以不設置
params.setTitleRows(0);
// 開啟Excel校驗
params.setNeedVerfiy(true);
params.setVerifyHandler(talentImportVerifyHandler);
result = ExcelImportUtil.importExcelMore(multipartFile.getInputStream(),
TalentUserInputEntity.class, params);
} finally {
// 清除threadLocal 防止內存泄漏
ThreadLocal<List<TalentUserInputEntity>> threadLocal = talentImportVerifyHandler.getThreadLocal();
if (threadLocal != null) {
threadLocal.remove();
}
}
System.out.println("是否校驗失敗: " + result.isVerfiyFail());
System.out.println("校驗失敗的集合:" + JSONObject.toJSONString(result.getFailList()));
System.out.println("校驗通過的集合:" + JSONObject.toJSONString(result.getList()));
// 合并結果集
List<TalentUserInputEntity> resultList = new ArrayList<>();
resultList.addAll(result.getFailList());
resultList.addAll(result.getList());
for (TalentUserInputEntity inputEntity : resultList) {
StringJoiner joiner = new StringJoiner(",");
joiner.add(inputEntity.getErrorMsg());
// 校驗Collection的元素
inputEntity.getExperienceList().forEach(e -> verify(joiner, e));
inputEntity.getEducationList().forEach(e -> verify(joiner, e));
inputEntity.getAwardList().forEach(e -> verify(joiner, e));
inputEntity.getPunishmentList().forEach(e -> verify(joiner, e));
inputEntity.setErrorMsg(joiner.toString());
}
for (TalentUserInputEntity entity : result.getFailList()) {
int line = entity.getRowNum() + 1;
String msg = "第" + line + "行的錯誤是：" + entity.getErrorMsg();
System.out.println(msg);
}
return true;
}
private void verify(StringJoiner joiner, Object object) {
String validationMsg = PoiValidationUtil.validation(object, null);
if (StringUtils.isNotEmpty(validationMsg)) {
joiner.add(validationMsg);
}
}導入示例Excel2，結果如下：
實體類
CourseEntity.java
package com.mye.hl11easypoi.api.pojo;
import cn.afterturn.easypoi.excel.annotation.Excel;
import cn.afterturn.easypoi.excel.annotation.ExcelCollection;
import cn.afterturn.easypoi.excel.annotation.ExcelEntity;
import cn.afterturn.easypoi.excel.annotation.ExcelTarget;
import cn.afterturn.easypoi.handler.inter.IExcelDataModel;
import cn.afterturn.easypoi.handler.inter.IExcelModel;
import lombok.Data;
import java.util.List;
@Data
@ExcelTarget("courseEntity")
public class CourseEntity implements java.io.Serializable, IExcelModel, IExcelDataModel {
/**
* 主鍵
*/
private String id;
/**
* 課程名稱
* needMerge 是否需要縱向合并單元格(用于list創建的多個row)
*/
@Excel(name = "課程名稱", orderNum = "0", width = 25, needMerge = true)
private String name;
/**
* 老師主鍵
*/
// @ExcelEntity(id = "major")
private TeacherEntity chineseTeacher;
/**
* 老師主鍵
*/
@ExcelEntity(id = "absent")
private TeacherEntity mathTeacher;
@ExcelCollection(name = "學生", orderNum = "3")
private List<StudentEntity> students;
private String errorMsg; //自定義一個errorMsg接受下面重寫IExcelModel接口的get和setErrorMsg方法。
private Integer rowNum; //自定義一個rowNum接受下面重寫IExcelModel接口的get和setRowNum方法。
@Override
public String getErrorMsg() {
return errorMsg;
}
@Override
public void setErrorMsg(String errorMsg) {
this.errorMsg = errorMsg;
}
@Override
public Integer getRowNum() {
return rowNum;
}
@Override
public void setRowNum(Integer rowNum) {
this.rowNum = rowNum;
}
}StudentEntity.java
package com.mye.hl11easypoi.api.pojo;
import cn.afterturn.easypoi.excel.annotation.Excel;
import lombok.Data;
import java.util.Date;
@Data
public class StudentEntity implements java.io.Serializable {
/**
* id
*/
private String id;
/**
* 學生姓名
*/
@Excel(name = "學生姓名", height = 20, width = 30, isImportField = "true")
private String name;
/**
* 學生性別
*/
@Excel(name = "學生性別", replace = {"男_1", "女_2"}, suffix = "生", isImportField = "true")
private int sex;
@Excel(name = "出生日期", exportFormat = "yyyyMMddHHmmss", format = "yyyy-MM-dd", isImportField = "true", width = 20)
private Date birthday;
@Excel(name = "進校日期", exportFormat = "yyyyMMddHHmmss", format = "yyyy-MM-dd")
private Date registrationDate;
}TeacherEntity.java
package com.mye.hl11easypoi.api.pojo;
import cn.afterturn.easypoi.excel.annotation.Excel;
import lombok.Data;
@Data
public class TeacherEntity {
/**
* 教師名稱
* isImportField 導入Excel時，對Excel中的字段進行校驗，如果沒有該字段，導入失敗
*/
@Excel(name = "教師姓名", width = 30, orderNum = "1" ,isImportField = "true")
private String name;
/**
* 教師性別
* replace 值的替換，`replace = {"男_1", "女_2"} `將值為1的替換為男
* suffix 文字后綴
*/
@Excel(name = "教師性別", replace = {"男_1", "女_2"}, suffix = "生", isImportField = "true",orderNum = "2")
private int sex;
}自定義校驗類
package com.mye.hl11easypoi.api.verifyHandler;
import cn.afterturn.easypoi.excel.entity.result.ExcelVerifyHandlerResult;
import cn.afterturn.easypoi.handler.inter.IExcelVerifyHandler;
import com.mye.hl11easypoi.api.pojo.CourseEntity;
public class MyVerifyHandler implements IExcelVerifyHandler<CourseEntity> {
@Override
public ExcelVerifyHandlerResult verifyHandler(CourseEntity courseEntity) {
ExcelVerifyHandlerResult result = new ExcelVerifyHandlerResult();
//假設我們要添加用戶，
//現在去數據庫查詢getName，如果存在則表示校驗不通過。
//假設現在數據庫中有個getName 測試課程
if ("測試課程".equals(courseEntity.getName())) {
result.setMsg("該課程已存在");
result.setSuccess(false);
return result;
}
result.setSuccess(true);
return result;
}
}測試類
package com.mye.hl11easypoi;
import cn.afterturn.easypoi.excel.ExcelExportUtil;
import cn.afterturn.easypoi.excel.entity.ExportParams;
import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.result.ExcelImportResult;
import cn.afterturn.easypoi.excel.imports.ExcelImportService;
import cn.hutool.json.JSONUtil;
import com.mye.hl11easypoi.api.pojo.*;
import com.mye.hl11easypoi.api.verifyHandler.MyVerifyHandler;
import org.apache.poi.ss.usermodel.Workbook;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.*;
@SpringBootTest(classes = Hl11EasypoiApplication.class)
@RunWith(SpringRunner.class)
public class TestPOI {
@Test
public void testExportExcel() throws Exception {
List<CourseEntity> courseEntityList = new ArrayList<>();
CourseEntity courseEntity = new CourseEntity();
courseEntity.setId("1");
courseEntity.setName("測試課程");
// 第二個
CourseEntity courseEntity1 = new CourseEntity();
courseEntity1.setId("2");
courseEntity1.setName("數學");
TeacherEntity teacherEntity1 = new TeacherEntity();
teacherEntity1.setSex(1);
teacherEntity1.setName("李老師");
TeacherEntity teacherEntity = new TeacherEntity();
teacherEntity.setName("張老師");
teacherEntity.setSex(1);
courseEntity.setMathTeacher(teacherEntity);
courseEntity1.setMathTeacher(teacherEntity1);
List<StudentEntity> studentEntities = new ArrayList<>();
for (int i = 1; i <= 2; i++) {
StudentEntity studentEntity = new StudentEntity();
studentEntity.setName("學生" + i);
studentEntity.setSex(i);
studentEntity.setBirthday(new Date());
studentEntities.add(studentEntity);
}
courseEntity.setStudents(studentEntities);
courseEntity1.setStudents(studentEntities);
courseEntityList.add(courseEntity);
courseEntityList.add(courseEntity1);
System.out.println(courseEntityList+"11111111111111");
Date start = new Date();
Workbook workbook = ExcelExportUtil.exportExcel( new ExportParams("導出測試",
null, "測試"),
CourseEntity.class, courseEntityList);
System.out.println(new Date().getTime() - start.getTime());
File savefile = new File("E:/desktop/excel/");
if (!savefile.exists()) {
savefile.mkdirs();
}
FileOutputStream fos = new FileOutputStream("E:/desktop/excel/教師課程學生導出測試.xls");
workbook.write(fos);
fos.close();
}
@Test
public void testImport2() throws Exception {
// 參數1：導入excel文件流 參數2：導入類型 參數3：導入的配置對象
ImportParams importParams = new ImportParams();
importParams.setTitleRows(1); // 設置標題列占幾行
importParams.setHeadRows(2); // 設置字段名稱占幾行 即header
importParams.setNeedVerify(true);//開啟校驗
importParams.setVerifyHandler(new MyVerifyHandler());
importParams.setStartSheetIndex(0); // 設置從第幾張表格開始讀取，這里0代表第一張表，默認從第一張表讀取
BufferedInputStream bis = new BufferedInputStream(new FileInputStream(new File("E:/desktop/excel/教師課程學生導出測試.xls")));
ExcelImportResult result = new ExcelImportService().importExcelByIs(bis, CourseEntity.class, importParams, true);
//這個是正確導入的
List<CourseEntity> list = result.getList();
System.out.println("成功導入的集合："+JSONUtil.toJsonStr(list));
List<CourseEntity> failList = result.getFailList();
System.out.println("失敗導入的集合"+JSONUtil.toJsonStr(failList));
for (CourseEntity courseEntity : failList) {
int line = courseEntity.getRowNum();
String msg = "第" + line + "行的錯誤是:" + courseEntity.getErrorMsg();
System.out.println(msg);
}
//將錯誤excel信息返回給客戶端
ExportParams exportParams = new ExportParams();
Workbook workbook = ExcelExportUtil.exportExcel(exportParams, CourseEntity.class, failList);
// HttpServletResponse response = null;
// response.setHeader("content-Type", "application/vnd.ms-excel");
// response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode("用戶數據表","UTF-8") + ".xls");
// response.setCharacterEncoding("UTF-8");
// workbook.write(response.getOutputStream());
FileOutputStream fos = new FileOutputStream("E:/desktop/excel/用戶數據表.xls");
workbook.write(fos);
fos.close();
}
}導出結果
導入結果
感謝各位的閱讀，以上就是“Java中easypoi導入校驗的方法是什么”的內容了，經過本文的學習后，相信大家對Java中easypoi導入校驗的方法是什么這一問題有了更深刻的體會，具體使用情況還需要大家實踐驗證。這里是億速云，小編將為大家推送更多相關知識點的文章，歡迎關注！
免責聲明：本站發布的內容（圖片、視頻和文字）以原創、轉載和分享為主，文章觀點不代表本網站立場，如果涉及侵權請聯系站長郵箱：is@yisu.com進行舉報，并提供相關證據，一經查實，將立刻刪除涉嫌侵權內容。
