Java tutorial
/** * Copyright 2016 Pascal * * Licensed 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 com.github.pascalgn.jiracli.util; import static org.junit.Assert.assertEquals; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.InputStream; import java.util.ArrayList; import java.util.List; import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import org.junit.Test; import com.github.pascalgn.jiracli.testutil.ExcelUtils; import com.github.pascalgn.jiracli.util.ExcelHelper.CellHandler; public class SimpleExcelHelperTest { @Test public void test1() throws Exception { byte[] buf; try (ByteArrayOutputStream out = new ByteArrayOutputStream()) { try (Workbook wb = new XSSFWorkbook()) { Sheet sheet1 = wb.createSheet("Sheet1"); for (int row = 0; row < 10; row++) { for (int column = 0; column < 10; column++) { String cell = row + "/" + column; ExcelUtils.writeCell(sheet1, row, column, cell); } } wb.write(out); } buf = out.toByteArray(); } final List<String> cellValues = new ArrayList<String>(); try (InputStream inputStream = new ByteArrayInputStream(buf)) { ExcelHelper excelHelper = new SimpleExcelHelper(); excelHelper.parseWorkbook(inputStream, new CellHandler() { @Override public void handleCell(int row, String column, String value) { cellValues.add(value); } }); } assertEquals(100, cellValues.size()); assertEquals("1/2", cellValues.get(12)); assertEquals("4/3", cellValues.get(43)); assertEquals("9/9", cellValues.get(99)); } }