java io向txt文件中輸入換行符實(shí)現(xiàn)代碼其實(shí)很簡單，就是下面這幾行代碼即可實(shí)現(xiàn)。
BufferedReader reader=new BufferedReader(new InputStreamReader(fis));
String a=reader.readLine();
StringBuffer aa=new StringBuffer();
while(a!=""&&a!=null){
response.getWriter().write(a+"\r\n");
a=reader.readLine();
}
response.flushBuffer();