txt文件读写
针对txt,csv文件的读写可以使用java的读写操作。
以下是一个简单的例子：

private static void readtxt(string path){try {inputstream in = new fileinputstream(path);bufferedreader br = new bufferedreader(new inputstreamreader(in,"gb2312"));string tmp = "";while((tmp=br.readline())!=null){system.out.println(tmp);}br.close();in.close();} catch (filenotfoundexception e) {e.printstacktrace();} catch (ioexception e) {e.printstacktrace();}}private static void writetxt(string path){try{outputstream ou = new fileoutputstream(path);bufferedwriter bw = new bufferedwriter(new outputstreamwriter(ou,"gb2312"));bufferedreader br = new bufferedreader(new inputstreamreader(system.in,"utf-8"));string tmp = "";while((tmp=br.readline())!=null&&!tmp.equals("exit")){bw.write(tmp);bw.flush();bw.newline();}br.close();bw.close();ou.close();}catch(exception e){e.printstacktrace();}}