1.金額 int型不夠長，改為long

2.越南語字符編碼問題（UTF_8）編碼

3.Java導出csv在excel打開亂碼

public class CreateCsvUtil { @SuppressWarnings("rawtypes")public static File createCSVFile(List exportData, LinkedHashMap map, String outPutPath,String fileName) {File csvFile = null;BufferedWriter csvFileOutputStream = null;try {File file = new File(outPutPath);if (!file.exists()&&!file.isDirectory()) {file.mkdirs();}//定義文件名格式并創建csvFile = File.createTempFile(fileName, ".csv", new File(outPutPath));System.out.println("csvFile：" + csvFile);FileOutputStream fileOutputStream = new FileOutputStream(csvFile);//加入bom 否則生成的csv文件 用excel亂碼fileOutputStream.write(new byte[] { (byte) 0xEF, (byte) 0xBB,(byte) 0xBF});// UTF-8使正確讀取分隔符"," OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fileOutputStream, "utf-8");csvFileOutputStream = new BufferedWriter(outputStreamWriter, 1024);System.out.println("csvFileOutputStream：" + csvFileOutputStream);// 寫入文件頭部for (Iterator propertyIterator = map.entrySet().iterator(); propertyIterator.hasNext(); ) {java.util.Map.Entry propertyEntry = (java.util.Map.Entry) propertyIterator.next();csvFileOutputStream.write((String) propertyEntry.getValue() != null ? (String) propertyEntry.getValue() : "");if (propertyIterator.hasNext()) {csvFileOutputStream.write(",");}}csvFileOutputStream.newLine();// 寫入文件內容for (Iterator iterator = exportData.iterator(); iterator.hasNext(); ) {Object row = (Object) iterator.next();for (Iterator propertyIterator = map.entrySet().iterator(); propertyIterator.hasNext(); ) {java.util.Map.Entry propertyEntry = (java.util.Map.Entry) propertyIterator.next();//如果是空值則進行處理用 "-" 號填充 否則會拋空指針String va="-";String property = BeanUtils.getProperty(row, (String) propertyEntry.getKey());if(property!=null&&!property.equals("")){csvFileOutputStream.write((String)property);}else{csvFileOutputStream.write((String)va);}if (propertyIterator.hasNext()) {csvFileOutputStream.write(",");}}if (iterator.hasNext()) {csvFileOutputStream.newLine();}}csvFileOutputStream.flush();} catch (Exception e) {e.printStackTrace();} finally {try {csvFileOutputStream.close();} catch (IOException e) {e.printStackTrace();}}return csvFile;} }

總結

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