java的socket接收输入流问题，javasocket输入流,我自己机器上为什么每次接

java的socket接收输入流问题，javasocket输入流,我自己机器上为什么每次接

我自己机器上为什么每次接受的输入流数据的长度只能是65536个字节，我声明的缓冲字节远大于65536，请问为什么。

这是代码：客户端：public class Client {    static Socket client = null;    static final int PORT = 1234;    static final String IP = "127.0.0.1";    static final String PATH = "savefile.xml";//  static InputStream inputStream = null;    static DataInputStream inputStream = null;    static OutputStream outputStream = null;    public static void main(String[] A) {        init();        receiveData1();    }    public static void init() {        try {            client = new Socket(IP, PORT);            outputStream = new FileOutputStream(PATH);        } catch (UnknownHostException e) {            e.printStackTrace();            System.out.println("未知的服务器.");        } catch (IOException e) {            e.printStackTrace();            System.out.println("输入输出服务器出现异常.");        }    }    public static void receiveData1() {        try {//          inputStream = client.getInputStream();            inputStream= new DataInputStream(new BufferedInputStream(client.getInputStream()));            long startTime= System.currentTimeMillis();            String fileName= inputStream.readUTF();            long length= inputStream.readLong();            System.out.println("文件名以及长度:"+fileName+ " :"+ length);            StringBuffer content= new StringBuffer();            byte[] temp= new byte[102400];            int numFlag= inputStream.read(temp);            System.out.println("numFlag:"+numFlag);            while(numFlag!= -1) {                content.append(temp);                numFlag= inputStream.read(temp);                System.out.println("numFlag:"+numFlag);            }            System.out.println("接受的总时间是："+(System.currentTimeMillis()- startTime));            SAVEINFILE(content);        } catch (IOException e) {            e.printStackTrace();            System.out.println("接收服务器返回数据时出现异常.");        }    }    public static void receiveData2() {        try {//          inputStream = client.getInputStream();            byte[] temp= new byte[1000000];            StringBuffer content= new StringBuffer();            int numFlag= inputStream.read(temp);            while(numFlag!= -1) {                content.append(temp);                numFlag= inputStream.read(temp);            }            System.out.println(content.toString());            SAVEINFILE(content);        } catch (IOException e) {            e.printStackTrace();            System.out.println("接收服务器返回数据时出现异常.");        }    }    public static final void SAVEINFILE(final Object content) {        System.out.println("content的类是："+content.getClass());        if(content instanceof StringBuffer) {            try {                System.out.println(content);                outputStream.write(content.toString().getBytes());            } catch (IOException e) {                e.printStackTrace();                System.out.println("存储到文件中出现异常.");            }        }else{            if(content instanceof String) {                try {                    outputStream.write(((String) content).getBytes());                } catch (IOException e) {                    e.printStackTrace();                    System.out.println("存储到文件中出现异常.");                }            }else{                System.out.println("传入的参数没有定义.");            }        }        CLOSE();    }    public static final void CLOSE() {        try {            outputStream.flush();            inputStream.close();            outputStream.close();        } catch (IOException e) {            e.printStackTrace();            System.out.println("关闭输入输出流的时候出现异常.");        }    }}服务端：public class Server {    static ServerSocket server= null;//  static OutputStream outputStream= null;    static DataOutputStream outputStream= null;    static InputStream inputStream= null;    static String fileName= "";    static long length= 0;    static final int PORT= 1234;    static Socket socket= null;    static final String PATH= "E:/download/logs/test/SystemOut.log";    public static void main(String[] A) {        init();        sendFile();    }    public static void init() {        try {            server= new ServerSocket(PORT);        } catch (IOException e) {            e.printStackTrace();            System.out.println("服务器启动出现异常");        }        System.out.println("服务器已启动.");    }    public static final void saveFile(final String path, Object content) {        /*try {            outputStream= new FileOutputStream(path);        } catch (FileNotFoundException e) {            e.printStackTrace();            System.out.println("读取文件时出现异常.");        }*/    }    public static void readFile(final String path) {        try {            File file= new File(path);            fileName= file.getName();            length= file.length();            inputStream= new FileInputStream(file);        } catch (FileNotFoundException e) {            e.printStackTrace();            System.out.println("存储文件时出现异常.");        }    }    public static void sendFile() {            while(true) {                try {                    socket = server.accept();                    readFile(PATH);//                  outputStream= socket.getOutputStream();                    outputStream= new DataOutputStream(new BufferedOutputStream(socket.getOutputStream()));                } catch (IOException e) {                    e.printStackTrace();                    System.out.println("等待客户端连接时出现错误.");                }                System.out.println("开始发送数据.");                try {                    int i= 2;                    outputStream.writeUTF(fileName);                    outputStream.flush();                    outputStream.writeLong(length);                    outputStream.flush();                    byte[] temp= new byte[1024000];                    int n= inputStream.read(temp);                    System.out.println("本次发送"+n+"个字节.");                    while(n!= -1) {                        System.out.println("本次发送了"+n+"个字节；"+"第"+i);                        outputStream.write(temp);                        n= inputStream.read(temp);                        i++;                    }                    CLOSE_CONNECTION();                } catch (IOException e) {                    e.printStackTrace();                    System.out.println("发送数据时出现错误.");                }            }    }    public static void receiveFile() {        try {            inputStream= socket.getInputStream();        } catch (IOException e) {            e.printStackTrace();            System.out.println("接收文件时出现异常.");        }    }    public static final void CLOSE_CONNECTION() {        try {            outputStream.flush();            outputStream.close();            socket.close();//          server.close();        } catch (IOException e) {            e.printStackTrace();        }    }}//该片段来自于http://byrx.net