透過Java解析Excel檔案
也是一個工作中遇到的情境,很多單位想讓內部人員利用Excel維護資料(因為維護上比較簡單方便),且想讓這份資料透過網頁呈現給一般網友閱讀,所以整體後端的流程應該是:
- 將維護的Excel透過網頁介面上傳
- 將上傳的Excel轉換成XML
- 網頁去讀取這份XML來呈現
透過以上的三個步驟,就可以完成客戶想要效果。
本範例展示的是讀取Excel的XLS格式(新版Excel為XLSX格式),並轉換成陣列的方法(寫入XML在前面的範例就有了),我們選用讀取Excel的Library是Apache POI,而檔內已經有以下的資料,其中Total是公式欄位,計算Price x Quantity:
ID | Name | Price | Quantity | Total |
100001 | 產品名稱1 | 10 | 5 | 50 |
100002 | 產品名稱2 | 20 | 10 | 200 |
100003 | 產品名稱3 | 30 | 15 | 450 |
以下是讀取的程式範例:
package CDIT.stanley; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.Iterator; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.poifs.filesystem.POIFSFileSystem; public class excelToXMLFullSample { static ArrayList<ArrayList<String>> excelData = new ArrayList<ArrayList<String>>(); public static void main (String[] args) throws FileNotFoundException{ excelData.clear(); String xlsPath = "C:\\Projects\\Javas\\sample.xls"; InputStream inputStream = null; inputStream = new FileInputStream (xlsPath); POIFSFileSystem fileSystem = null; try { fileSystem = new POIFSFileSystem (inputStream); @SuppressWarnings("resource") HSSFWorkbook workBook = new HSSFWorkbook (fileSystem); HSSFSheet sheet = workBook.getSheetAt (0); Iterator<?> rows = sheet.rowIterator (); while (rows.hasNext ()){ HSSFRow row = (HSSFRow) rows.next(); Iterator<?> cells = row.cellIterator (); ArrayList<String> rowData = new ArrayList<String>(); while (cells.hasNext ()){ HSSFCell cell = (HSSFCell) cells.next(); switch (cell.getCellTypeEnum()){ case STRING :{ rowData.add(cell.getStringCellValue()); break; } case NUMERIC : { rowData.add((int)cell.getNumericCellValue() + ""); break; } case FORMULA :{ switch(cell.getCachedFormulaResultTypeEnum()) { case STRING: rowData.add(cell.getStringCellValue ()); break; case NUMERIC: rowData.add((int)cell.getNumericCellValue() + ""); break; default: rowData.add(""); break; } } default: rowData.add(""); break; } } excelData.add(rowData); } } catch(IOException e){ System.out.println("IOException " + e.getMessage()); System.out.println("轉換失敗,請檢查Excel檔案與格式是否正確"); } for(int i=0 ; i<excelData.size(); i++){ System.out.println("Excel Row "+ i +" Data : " + excelData.get(i)); } } }
程式會把Excel內的資料轉換為ArrayList,輸出內容如下:
Excel Row 0 Data : [Product ID, Product Name, Product Price, Quantity, Total] Excel Row 1 Data : [100001, 產品名稱1, 10, 5, 50, ] Excel Row 2 Data : [100002, 產品名稱2, 20, 10, 200, ] Excel Row 3 Data : [100003, 產品名稱3, 30, 15, 450, ]
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Как выбрать натуральные добавки: советы по оценке отзывов и составов
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Узнайте, как правильно выбирать натуральные препараты для здоровья, ориентируясь в море отзывов и рекомендаций. Мы расскажем о том, на что обратить внимание при оценке добавок, как изучать состав и какие советы помогут вам сделать осознанный выбор. Делитесь своим опытом и находите оптимальные решения для поддержания здоровья!
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Отзыв на натуральные препараты: как не ошибиться в выборе?
В современном мире, где забота о здоровье стала важной частью жизни, мы сталкиваемся с множеством различных добавок и натуральных препаратов. Как выбрать действительно эффективное средство среди моря предложений? Давайте разберемся вместе, как правильно ориентироваться в этом море отзывов и рекомендаций.
Почему важно правильно выбирать добавки?
Выбор добавок для здоровья — это не просто вопрос моды или маркетинга. Понимание того, какие именно вещества могут поддержать наше здоровье, поможет избежать неэффективных или даже вредных средств. Напоминает ли вам это выбор продуктов в магазине? Неправильный выбор может привести к нежелательным последствиям.
Оценка отзывов: на что обратить внимание?
1. Источник отзывов
Как и в случае с рецептами от бабушек, важно знать, откуда берется информация. Отзывы на специализированных медицинских сайтах и форумах обычно более достоверны, чем комментарии под постами в социальных сетях. Проверяйте, кто оставил отзыв — врач, эксперт или просто пользователь?
2. Конкретика
Обратите внимание на конкретные примеры. Отзывы, которые содержат подробности о том, как и когда был использован препарат, его эффект и возможные побочные реакции, будут более полезными. Например, если кто-то сообщает, что препарат помог ему улучшить здоровье суставов за три недели, это уже конкретная информация, на которую стоит обратить внимание.
3. Баланс мнений
Не стоит полагаться только на положительные или только на отрицательные отзывы. Каждый имеет право на свое мнение, и важно понять, что именно вызвало такой отзыв. Например, некоторые могут говорить о негативном опыте из-за неправильного применения. Как вы думаете, сколько людей действительно следуют инструкции?
Как выбрать натуральные добавки?
1. Изучайте состав
Проверяйте состав препаратов. Многие производители указывают активные ингредиенты и их количество на упаковке. Сравните с другими аналогами. Например, если вы выбираете бальзам с экстрактом шиповника, посмотрите, сколько его в составе и есть ли дополнительные компоненты, которые могут усиливать эффект.
2. Консультируйтесь с врачом
Перед тем как начать принимать новые добавки, особенно если у вас есть хронические заболевания, лучше проконсультироваться с врачом. Он поможет определить, что именно нужно вашему организму.
3. Изучайте исследования
Многочисленные научные исследования и клинические испытания могут служить надежным источником информации о действии тех или иных препаратов. Постарайтесь найти такие исследования, которые подтверждают эффективность добавки, которую вы планируете использовать.
Личный опыт или чужие советы?
Как вы относитесь к советам других людей? У каждого из нас есть свои предпочтения. Одни предпочитают полагаться только на свой опыт, другие — прислушиваться к мнениям друзей и знакомых. Но помните: важно находить баланс. Вы можете черпать вдохновение из чужих рекомендаций, но всегда проверяйте информацию и делайте выбор, основываясь на собственных потребностях и здоровье.
Интерактивный элемент: ваше мнение
А как вы выбираете натуральные препараты? Делитесь своими секретами в комментариях! Возможно, ваш опыт поможет другим избежать ошибок.
Заключение
В мире натуральных добавок нет универсального решения. Правильный выбор зависит от множества факторов, включая ваш образ жизни, состояние здоровья и личные предпочтения. Главное — быть внимательным и критично относиться к информации, которую вы получаете. Помните, что ваше здоровье — это ваша ответственность!
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7 simple secrets to eating the Mediterranean way
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What if “diet” wasn’t a dirty word?
During Suzy Karadsheh’s childhood in Port Said, Egypt, diet culture was nonexistent.
“My parents emphasized joy at the table, rather than anything else,” Karadsheh said. “I grew up with Mediterranean lifestyle principles that celebrate eating with the seasons, eating mostly whole foods and above all else, sharing.”
But when Karadsheh moved to the United States at age 16, she witnessed people doing detoxes or restricting certain food groups or ingredients. Surrounded by that narrative and an abundance of new foods in her college dining hall, she says she “gained the freshman 31 instead of the freshman 15.” When she returned home to Egypt that summer, “I eased back into eating the Mediterranean food that I grew up with. During the span of about two months, I shed all of that weight without thinking I was ever on a diet.”
To help invite joy back to the table for others — and to keep her family’s culinary heritage alive for her two daughters (now 14 and 22) — Atlanta-based Karadsheh launched The Mediterranean Dish food blog 10 years ago. Quickly, her table started getting filled with more than just her friends and family.
“I started receiving emails from folks whose doctors had prescribed the Mediterranean diet and were seeking approachable recipes,” Karadsheh said. The plant-based eating lifestyle, often rated the world’s best diet, can reduce the risk for diabetes, high cholesterol, dementia, memory loss and depression, according to research. What’s more, the meal plan has been linked to stronger bones, a healthier heart and longer life.
Preparing meals the Mediterranean way, according to Karadsheh, can help you “eat well and live joyfully. To us, ‘diet’ doesn’t mean a list of ‘eat this’ and ‘don’t eat that.’” Instead of omission, Karadsheh focuses on abundance, asking herself, “what can I add to my life through this way of living? More whole foods, vegetables, grains, legumes? Naturally, when you add these good-for-you ingredients, you eat less of what’s not as health-promoting,” she told CNN.
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Sea robins are so adept at rooting out prey as they walk along the ocean floor on their six leglike appendages that other fish follow them around in the hope of snagging some freshly uncovered prey themselves, said the authors of two new studies published Thursday in the journal Current Biology.
David Kingsley, coauthor of both studies, first came across the fish in the summer of 2016 after giving a seminar at the Marine Biological Laboratory in Woods Hole, Massachusetts. Kingsley is the Rudy J. and Daphne Donohue Munzer Professor in the department of developmental biology at Stanford University’s School of Medicine.
Before leaving to catch a flight, Kingsley stopped at a small public aquarium, where he spied sea robins and their delicate fins, which resemble the feathery wings of a bird, as well as leglike appendages.
“The sea robins on display completely spun my head around because they had the body of a fish, the wings of a bird, and multiple legs like a crab,” Kingsley said in an email.
“I’d never seen a fish that looked like it was made of body parts from many different types of animals.”
Kingsley and his colleagues decided to study sea robins in a lab setting, uncovering a wealth of surprises, including the differences between sea robin species and the genetics responsible for their unusual traits, such as leglike fins that have evolved so that they largely function as sensory organs.
The findings of the study team’s new research show how evolution leads to complex adaptations in specific environments, such as the ability of sea robins to be able to “taste” prey using their quickly scurrying and highly sensitive appendages.
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Automatic takeoffs are coming for passenger jets and they’re going to redraw the map of the sky
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In late 1965, at what’s now London Heathrow airport, a commercial flight coming from Paris made history by being the first to land automatically.
The plane – A Trident 1C operated by BEA, which would later become British Airways – was equipped with a newly developed extension of the autopilot (a system to help guide the plane’s path without manual control) known as “autoland.”
Today, automatic landing systems are installed on most commercial aircraft and improve the safety of landings in difficult weather or poor visibility.
Now, nearly 60 years later, the world’s third largest aircraft manufacturer, Brazil’s Embraer, is introducing a similar technology, but for takeoffs.
Called “E2 Enhanced Take Off System,” after the family of aircraft it’s designed for, the technology would not only improve safety by reducing pilot workload, but it would also improve range and takeoff weight, allowing the planes that use it to travel farther, according to Embraer.
“The system is better than the pilots,” says Patrice London, principal performance engineer at Embraer, who has worked on the project for over a decade. ”That’s because it performs in the same way all the time. If you do 1,000 takeoffs, you will get 1,000 of exactly the same takeoff.”
Embraer, London adds, has already started flight testing, with the aim to get it approved by aviation authorities in 2025, before introducing it from select airports.
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7 simple secrets to eating the Mediterranean way
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What if “diet” wasn’t a dirty word?
During Suzy Karadsheh’s childhood in Port Said, Egypt, diet culture was nonexistent.
“My parents emphasized joy at the table, rather than anything else,” Karadsheh said. “I grew up with Mediterranean lifestyle principles that celebrate eating with the seasons, eating mostly whole foods and above all else, sharing.”
But when Karadsheh moved to the United States at age 16, she witnessed people doing detoxes or restricting certain food groups or ingredients. Surrounded by that narrative and an abundance of new foods in her college dining hall, she says she “gained the freshman 31 instead of the freshman 15.” When she returned home to Egypt that summer, “I eased back into eating the Mediterranean food that I grew up with. During the span of about two months, I shed all of that weight without thinking I was ever on a diet.”
To help invite joy back to the table for others — and to keep her family’s culinary heritage alive for her two daughters (now 14 and 22) — Atlanta-based Karadsheh launched The Mediterranean Dish food blog 10 years ago. Quickly, her table started getting filled with more than just her friends and family.
“I started receiving emails from folks whose doctors had prescribed the Mediterranean diet and were seeking approachable recipes,” Karadsheh said. The plant-based eating lifestyle, often rated the world’s best diet, can reduce the risk for diabetes, high cholesterol, dementia, memory loss and depression, according to research. What’s more, the meal plan has been linked to stronger bones, a healthier heart and longer life.
Preparing meals the Mediterranean way, according to Karadsheh, can help you “eat well and live joyfully. To us, ‘diet’ doesn’t mean a list of ‘eat this’ and ‘don’t eat that.’” Instead of omission, Karadsheh focuses on abundance, asking herself, “what can I add to my life through this way of living? More whole foods, vegetables, grains, legumes? Naturally, when you add these good-for-you ingredients, you eat less of what’s not as health-promoting,” she told CNN.
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7 simple secrets to eating the Mediterranean way
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What if “diet” wasn’t a dirty word?
During Suzy Karadsheh’s childhood in Port Said, Egypt, diet culture was nonexistent.
“My parents emphasized joy at the table, rather than anything else,” Karadsheh said. “I grew up with Mediterranean lifestyle principles that celebrate eating with the seasons, eating mostly whole foods and above all else, sharing.”
But when Karadsheh moved to the United States at age 16, she witnessed people doing detoxes or restricting certain food groups or ingredients. Surrounded by that narrative and an abundance of new foods in her college dining hall, she says she “gained the freshman 31 instead of the freshman 15.” When she returned home to Egypt that summer, “I eased back into eating the Mediterranean food that I grew up with. During the span of about two months, I shed all of that weight without thinking I was ever on a diet.”
To help invite joy back to the table for others — and to keep her family’s culinary heritage alive for her two daughters (now 14 and 22) — Atlanta-based Karadsheh launched The Mediterranean Dish food blog 10 years ago. Quickly, her table started getting filled with more than just her friends and family.
“I started receiving emails from folks whose doctors had prescribed the Mediterranean diet and were seeking approachable recipes,” Karadsheh said. The plant-based eating lifestyle, often rated the world’s best diet, can reduce the risk for diabetes, high cholesterol, dementia, memory loss and depression, according to research. What’s more, the meal plan has been linked to stronger bones, a healthier heart and longer life.
Preparing meals the Mediterranean way, according to Karadsheh, can help you “eat well and live joyfully. To us, ‘diet’ doesn’t mean a list of ‘eat this’ and ‘don’t eat that.’” Instead of omission, Karadsheh focuses on abundance, asking herself, “what can I add to my life through this way of living? More whole foods, vegetables, grains, legumes? Naturally, when you add these good-for-you ingredients, you eat less of what’s not as health-promoting,” she told CNN.
Automatic takeoffs are coming for passenger jets and they’re going to redraw the map of the sky
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In late 1965, at what’s now London Heathrow airport, a commercial flight coming from Paris made history by being the first to land automatically.
The plane – A Trident 1C operated by BEA, which would later become British Airways – was equipped with a newly developed extension of the autopilot (a system to help guide the plane’s path without manual control) known as “autoland.”
Today, automatic landing systems are installed on most commercial aircraft and improve the safety of landings in difficult weather or poor visibility.
Now, nearly 60 years later, the world’s third largest aircraft manufacturer, Brazil’s Embraer, is introducing a similar technology, but for takeoffs.
Called “E2 Enhanced Take Off System,” after the family of aircraft it’s designed for, the technology would not only improve safety by reducing pilot workload, but it would also improve range and takeoff weight, allowing the planes that use it to travel farther, according to Embraer.
“The system is better than the pilots,” says Patrice London, principal performance engineer at Embraer, who has worked on the project for over a decade. ”That’s because it performs in the same way all the time. If you do 1,000 takeoffs, you will get 1,000 of exactly the same takeoff.”
Embraer, London adds, has already started flight testing, with the aim to get it approved by aviation authorities in 2025, before introducing it from select airports.
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