featzhang commented on code in PR #7793: URL: https://github.com/apache/inlong/pull/7793#discussion_r1160445273
########## inlong-manager/manager-common/src/main/java/org/apache/inlong/manager/common/tool/excel/ExcelCellDataTransfer.java: ########## @@ -0,0 +1,81 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.inlong.manager.common.tool.excel; + +import java.text.ParseException; +import java.text.SimpleDateFormat; +import java.util.Date; + +public enum ExcelCellDataTransfer { + + DATE { + + final SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); + + String parse2Text(Object o) { + if (o == null) { + return null; + } else if (o instanceof Date) { + Date date = (Date) o; + return this.simpleDateFormat.format(date); + } else { + return String.valueOf(o); + } + } + + Object parseFromText(String so) { + if (so != null && so.length() > 0) { + String s = so; Review Comment: Fixed ########## inlong-manager/manager-common/src/main/java/org/apache/inlong/manager/common/tool/excel/ExcelTool.java: ########## @@ -0,0 +1,351 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.inlong.manager.common.tool.excel; + +import lombok.Data; +import org.apache.commons.collections.CollectionUtils; +import org.apache.commons.lang3.tuple.Pair; +import org.apache.commons.lang3.tuple.Triple; +import org.apache.inlong.manager.common.tool.excel.annotation.ExcelEntity; +import org.apache.inlong.manager.common.tool.excel.annotation.ExcelField; +import org.apache.inlong.manager.common.util.Preconditions; +import org.apache.poi.ss.usermodel.Cell; +import org.apache.poi.ss.usermodel.Row; +import org.apache.poi.xssf.usermodel.XSSFCell; +import org.apache.poi.xssf.usermodel.XSSFRichTextString; +import org.apache.poi.xssf.usermodel.XSSFRow; +import org.apache.poi.xssf.usermodel.XSSFSheet; +import org.apache.poi.xssf.usermodel.XSSFWorkbook; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; +import java.io.OutputStream; +import java.io.Serializable; +import java.lang.reflect.Field; +import java.lang.reflect.Method; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashMap; +import java.util.LinkedList; +import java.util.List; +import java.util.Map; +import java.util.Objects; +import java.util.Optional; +import java.util.stream.Collectors; +import java.util.stream.IntStream; + +import static org.apache.inlong.manager.common.util.Preconditions.expectTrue; + +/** + * Utility class for working with Excel files. + */ +public class ExcelTool { + + private ExcelTool() { + + } + + private static final Logger LOGGER = LoggerFactory.getLogger(ExcelTool.class); + private static final int DEFAULT_COLUMN_WIDTH = 10000; + + /** + * Extracts the header row from a given class and returns it as a list of strings. + */ + public static <E> List<String> extractHeader(Class<E> e1Class) { + List<String> list = new LinkedList<>(); + Field[] fields = e1Class.getDeclaredFields(); + if (fields.length > 0) { + for (Field field : fields) { + field.setAccessible(true); + ExcelField excel = field.getAnnotation(ExcelField.class); + if (excel != null) { + String excelName = excel.name(); + list.add(excelName); + } + } + return !list.isEmpty() ? list : Collections.emptyList(); + } else { + return Collections.emptyList(); + } + } + + /** + * Writes the given content to an Excel document. + * + * @param contents the list of contents to write + * @param out the output stream to write to + * @throws IOException if there is an error writing to the output stream + */ + public static <T> void write(List<T> contents, OutputStream out) throws IOException { + Preconditions.expectNotEmpty(contents, "Content can not be empty!"); + Class<?> clazz = contents.get(0).getClass(); + List<Map<String, String>> maps = write2List(contents); + doWrite(maps, clazz, out); + } + + public static <T> void doWrite(List<Map<String, String>> maps, Class<T> clazz, OutputStream out) + throws IOException { + List<String> heads = extractHeader(clazz); + if (heads.isEmpty()) { + throw new IllegalArgumentException( + "At least one field must be marked as Excel Field by annotation @ExcelField in class " + clazz); + } + XSSFWorkbook hwb = new XSSFWorkbook(); + XSSFSheet sheet = hwb.createSheet("Sheet 1"); + + for (int index = 0; index < heads.size(); index++) { + sheet.setColumnWidth(index, DEFAULT_COLUMN_WIDTH); + } + fillSheetHeader(sheet.createRow(0), heads); + // Review Comment: Fixed -- This is an automated message from the Apache Git Service. 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