將內容寫到txt文檔外面並讀取及刪除的辦法。本站提示廣大學習愛好者：（將內容寫到txt文檔外面並讀取及刪除的辦法）文章只能為提供參考，不一定能成為您想要的結果。以下是將內容寫到txt文檔外面並讀取及刪除的辦法正文
1、將內容寫到txt文檔外面
public static void writeFile() {
String txtFileName = "emailRecord.txt";
String directoryPath = "";
try {
directoryPath = WebplusContext.getRealPath("/apps/schoolfellow/upload/smsRecord");
File directory = new File(directoryPath);
if (!directory.exists()) {
directory.mkdirs();
}
File txtFile = new File(directoryPath, txtFileName);
FileOutputStream out = new FileOutputStream(txtFile, true);
String line = System.getProperty("line.separator");
String smsContent = "將內容寫到txt文件外面！" + line;
out.write(smsContent.toString().getBytes("GBK"));
out.close();
} catch (Exception ex) {
log.error("將成果寫入文件掉敗！", ex);
}
}
2、讀取文件外面的內容
public void readerFile() {
String filePath = WebplusContext.getServletContext().getRealPath("/apps/schoolfellow/upload/emailRecord/emailRecord.txt");
FileInputStream fis = null;
try {
fis = new FileInputStream(filePath);
InputStreamReader reader = new InputStreamReader(fis, "GBK");
BufferedReader br = new BufferedReader(reader);
String info = "";
schoolfellows = new ArrayList<SchoolfellowDataViewWrap>();
while ((info = br.readLine()) != null) {
System.out.println(info);
}
br.close();
fis.close();
} catch (Exception ex) {
log.error("讀取數據掉敗", ex);
} finally {
}
}
3、消除txt文件外面的內容
public void clearFileContent() {
String filePath = WebplusContext.getServletContext().getRealPath("/apps/schoolfellow/upload/emailRecord/emailRecord.txt");
try {
FileOutputStream out = new FileOutputStream(filePath,false);
out.write(new String("").getBytes());
out.close();
script = "alert('清空發送郵件日記勝利！');";
} catch (Exception ex) {
script = "alert('清空文件的內容掉敗,由於沒有發送郵件日記文件！');";
}
}
