JAVA SOCKET的I/O 使用

BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));  PrintWriter out = new PrintWriter(socket.getOutputStream(),true); out.close(); in.close();

使用中，又出现问题：

out.println(s); out.flush();

强调：一定要使用println，不能是print，readLine是根据换行来判断是否结束，否则读不出来。

ByteArrayOutputStream baos=new ByteArrayOutputStream(); byte[] buffer=new byte[1024]; int len=-1;while((len = is.read(buffer)!)=-1){    baos.write(buffer,0,len);}is.close();String html =baos.toString();baos.close(); return html;

java写入txt

public class NewFile {	public static void createFile(File file) {		if (!file.exists()) {			try {				System.out.println("is join");				file.createNewFile();			} catch (IOException e) {				System.out.println("创建文件夹失败，原因：" + e.toString());			}		} else {			System.out.println("文件已存在");		}		System.out.println("********end*******");	}	public static void main(String[] args) {		String encoding = "GBK";		File file = new File("./test.txt");		createFile(file);				if (file.exists()) {			System.out.println("*******run*******");			try {				BufferedWriter writer = new BufferedWriter(new FileWriter(file));				writer.write(new Date().toString());				writer.close();			} catch (IOException e) {				e.printStackTrace();			}		}	}}