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cn.afterturn.easypoi.csv.imports.CsvImportService Maven / Gradle / Ivy
package cn.afterturn.easypoi.csv.imports;
import cn.afterturn.easypoi.csv.entity.CsvImportParams;
import cn.afterturn.easypoi.excel.annotation.ExcelTarget;
import cn.afterturn.easypoi.excel.entity.params.ExcelCollectionParams;
import cn.afterturn.easypoi.excel.entity.params.ExcelImportEntity;
import cn.afterturn.easypoi.excel.entity.result.ExcelVerifyHandlerResult;
import cn.afterturn.easypoi.excel.imports.CellValueService;
import cn.afterturn.easypoi.excel.imports.base.ImportBaseService;
import cn.afterturn.easypoi.exception.excel.ExcelImportException;
import cn.afterturn.easypoi.exception.excel.enums.ExcelImportEnum;
import cn.afterturn.easypoi.handler.inter.IExcelModel;
import cn.afterturn.easypoi.handler.inter.IReadHandler;
import cn.afterturn.easypoi.util.PoiPublicUtil;
import cn.afterturn.easypoi.util.PoiReflectorUtil;
import cn.afterturn.easypoi.util.PoiValidationUtil;
import cn.afterturn.easypoi.util.UnicodeInputStream;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.builder.ReflectionToStringBuilder;
import org.apache.poi.ss.usermodel.Cell;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.*;
import java.lang.reflect.Field;
import java.util.*;
/**
* Csv 导入服务
* @author by jueyue on 18-10-3.
*/
public class CsvImportService extends ImportBaseService {
private final static Logger LOGGER = LoggerFactory.getLogger(CsvImportService.class);
private CellValueService cellValueServer;
private boolean verifyFail = false;
public CsvImportService() {
this.cellValueServer = new CellValueService();
}
public List readExcel(InputStream inputstream, Class pojoClass, CsvImportParams params, IReadHandler readHandler) {
List collection = new ArrayList();
try {
Map excelParams = new HashMap();
List excelCollection = new ArrayList();
String targetId = null;
i18nHandler = params.getI18nHandler();
if (!Map.class.equals(pojoClass)) {
Field[] fileds = PoiPublicUtil.getClassFields(pojoClass);
ExcelTarget etarget = pojoClass.getAnnotation(ExcelTarget.class);
if (etarget != null) {
targetId = etarget.value();
}
getAllExcelField(targetId, fileds, excelParams, excelCollection, pojoClass, null, null);
}
inputstream = new PushbackInputStream(inputstream, 3);
byte[] head = new byte[3];
inputstream.read(head);
// 判断 UTF8 是不是有 BOM
if (head[0] == -17 && head[1] == -69 && head[2] == -65) {
((PushbackInputStream) inputstream).unread(head, 0, 3);
inputstream = new UnicodeInputStream(inputstream);
} else {
((PushbackInputStream) inputstream).unread(head, 0, 3);
}
BufferedReader rows = new BufferedReader(new InputStreamReader(inputstream, params.getEncoding()));
for (int j = 0; j < params.getTitleRows(); j++) {
rows.readLine();
}
Map titlemap = getTitleMap(rows, params, excelCollection, excelParams);
int readRow = 0;
//跳过无效行
for (int i = 0; i < params.getStartRows(); i++) {
rows.readLine();
}
//判断index 和集合,集合情况默认为第一列
if (excelCollection.size() > 0 && params.getKeyIndex() == null) {
params.setKeyIndex(0);
}
StringBuilder errorMsg;
String row = null;
Object object = null;
String[] cells;
while ((row = rows.readLine()) != null) {
if (StringUtils.isEmpty(row)) {
continue;
}
errorMsg = new StringBuilder();
cells = row.split(params.getSpiltMark(), -1);
// 判断是集合元素还是不是集合元素,如果是就继续加入这个集合,不是就创建新的对象
// keyIndex 如果为空就不处理,仍然处理这一行
if (params.getKeyIndex() != null && (cells[params.getKeyIndex()] == null
|| StringUtils.isEmpty(cells[params.getKeyIndex()]))
&& object != null) {
for (ExcelCollectionParams param : excelCollection) {
addListContinue(object, param, row, titlemap, targetId, params, errorMsg);
}
} else {
object = PoiPublicUtil.createObject(pojoClass, targetId);
try {
Set keys = titlemap.keySet();
for (Integer cn : keys) {
String titleString = (String) titlemap.get(cn);
if (excelParams.containsKey(titleString) || Map.class.equals(pojoClass)) {
try {
saveFieldValue(params, object, cells[cn], excelParams, titleString);
} catch (ExcelImportException e) {
// 如果需要去校验就忽略,这个错误,继续执行
if (params.isNeedVerify() && ExcelImportEnum.GET_VALUE_ERROR.equals(e.getType())) {
errorMsg.append(" ").append(titleString).append(ExcelImportEnum.GET_VALUE_ERROR.getMsg());
}
}
}
}
for (ExcelCollectionParams param : excelCollection) {
addListContinue(object, param, row, titlemap, targetId, params, errorMsg);
}
if (verifyingDataValidity(object, params, pojoClass, errorMsg)) {
if (readHandler != null) {
readHandler.handler(object);
} else {
collection.add(object);
}
}
} catch (ExcelImportException e) {
LOGGER.error("excel import error , row num:{},obj:{}", readRow, ReflectionToStringBuilder.toString(object));
if (!e.getType().equals(ExcelImportEnum.VERIFY_ERROR)) {
throw new ExcelImportException(e.getType(), e);
}
} catch (Exception e) {
LOGGER.error("excel import error , row num:{},obj:{}", readRow, ReflectionToStringBuilder.toString(object));
throw new RuntimeException(e);
}
}
readRow++;
}
if (readHandler != null) {
readHandler.doAfterAll();
}
} catch (Exception e) {
LOGGER.error(e.getMessage(), e);
}
return collection;
}
private void addListContinue(Object object, ExcelCollectionParams param, String row,
Map titlemap, String targetId,
CsvImportParams params, StringBuilder errorMsg) throws Exception {
Collection collection = (Collection) PoiReflectorUtil.fromCache(object.getClass())
.getValue(object, param.getName());
Object entity = PoiPublicUtil.createObject(param.getType(), targetId);
// 是否需要加上这个对象
boolean isUsed = false;
String[] cells = row.split(params.getSpiltMark());
for (int i = 0; i < cells.length; i++) {
String cell = cells[i];
String titleString = (String) titlemap.get(i);
if (param.getExcelParams().containsKey(titleString)) {
try {
saveFieldValue(params, entity, cell, param.getExcelParams(), titleString);
} catch (ExcelImportException e) {
// 如果需要去校验就忽略,这个错误,继续执行
if (params.isNeedVerify() && ExcelImportEnum.GET_VALUE_ERROR.equals(e.getType())) {
errorMsg.append(" ").append(titleString).append(ExcelImportEnum.GET_VALUE_ERROR.getMsg());
}
}
isUsed = true;
}
}
if (isUsed) {
collection.add(entity);
}
}
/**
* 校验数据合法性
*/
private boolean verifyingDataValidity(Object object, CsvImportParams params,
Class pojoClass, StringBuilder fieldErrorMsg) {
boolean isAdd = true;
Cell cell = null;
if (params.isNeedVerify()) {
String errorMsg = PoiValidationUtil.validation(object, params.getVerifyGroup());
if (StringUtils.isNotEmpty(errorMsg)) {
if (object instanceof IExcelModel) {
IExcelModel model = (IExcelModel) object;
model.setErrorMsg(errorMsg);
}
isAdd = false;
verifyFail = true;
}
}
if (params.getVerifyHandler() != null) {
ExcelVerifyHandlerResult result = params.getVerifyHandler().verifyHandler(object);
if (!result.isSuccess()) {
if (object instanceof IExcelModel) {
IExcelModel model = (IExcelModel) object;
model.setErrorMsg((StringUtils.isNoneBlank(model.getErrorMsg())
? model.getErrorMsg() + "," : "") + result.getMsg());
}
isAdd = false;
verifyFail = true;
}
}
if ((params.isNeedVerify() || params.getVerifyHandler() != null) && fieldErrorMsg.length() > 0) {
if (object instanceof IExcelModel) {
IExcelModel model = (IExcelModel) object;
model.setErrorMsg((StringUtils.isNoneBlank(model.getErrorMsg())
? model.getErrorMsg() + "," : "") + fieldErrorMsg.toString());
}
isAdd = false;
verifyFail = true;
}
return isAdd;
}
/**
* 保存字段值(获取值,校验值,追加错误信息)
*/
private void saveFieldValue(CsvImportParams params, Object object, String cell,
Map excelParams, String titleString) throws Exception {
if (cell.startsWith(params.getTextMark()) && cell.endsWith(params.getTextMark())) {
//FIXED 字符串截取时考虑的情况不全面导致的BUG
cell = cell.substring(params.getTextMark().length(), cell.lastIndexOf(params.getTextMark()));
}
Object value = cellValueServer.getValue(params.getDataHandler(), object, cell, excelParams,
titleString, params.getDictHandler());
if (object instanceof Map) {
if (params.getDataHandler() != null) {
params.getDataHandler().setMapValue((Map) object, titleString, value);
} else {
((Map) object).put(titleString, value);
}
} else {
setValues(excelParams.get(titleString), object, value);
}
}
/**
* 获取表格字段列名对应信息
*/
private Map getTitleMap(BufferedReader rows, CsvImportParams params,
List excelCollection,
Map excelParams) throws IOException {
Map titlemap = new LinkedHashMap();
String collectionName = null;
ExcelCollectionParams collectionParams = null;
String row = null;
String[] cellTitle;
for (int j = 0; j < params.getHeadRows(); j++) {
row = rows.readLine();
if (row == null) {
continue;
}
cellTitle = row.split(params.getSpiltMark());
for (int i = 0; i < cellTitle.length; i++) {
String value = cellTitle[i];
//用以支持重名导入
if (StringUtils.isNotEmpty(value)) {
if (titlemap.containsKey(i)) {
collectionName = titlemap.get(i);
collectionParams = getCollectionParams(excelCollection, collectionName);
titlemap.put(i, collectionName + "_" + value);
} else if (StringUtils.isNotEmpty(collectionName) && collectionParams != null
&& collectionParams.getExcelParams()
.containsKey(collectionName + "_" + value)) {
titlemap.put(i, collectionName + "_" + value);
} else {
collectionName = null;
collectionParams = null;
}
if (StringUtils.isEmpty(collectionName)) {
titlemap.put(i, value);
}
}
}
}
// 处理指定列的情况
Set keys = excelParams.keySet();
for (String key : keys) {
if (key.startsWith("FIXED_")) {
String[] arr = key.split("_");
titlemap.put(Integer.parseInt(arr[1]), key);
}
}
return titlemap;
}
/**
* 获取这个名称对应的集合信息
*/
private ExcelCollectionParams getCollectionParams(List excelCollection,
String collectionName) {
for (ExcelCollectionParams excelCollectionParams : excelCollection) {
if (collectionName.equals(excelCollectionParams.getExcelName())) {
return excelCollectionParams;
}
}
return null;
}
}
