小编Qai*_*ood的帖子

String str = "9B7D2C34A366BF890C730641E6CECF6F";

我想转换str为字节数组,但str.getBytes()返回32个字节而不是16个字节.

nexus的移动设备中的NFC能否读取普通的RFID标签？

我正在通过以下IP地址进行套接字通信,但是我不想在ssl模式下进行通信但是如何更改InetAddress serverAddr = InetAddress.getByName("192.168.1.2");为SSL.

public class TCPClient implements Runnable {

    public void run() {

     try {

         InetAddress serverAddr = InetAddress.getByName("192.168.1.2");

             Log.d("TCP", "C: Connecting...");

             Socket socket = new Socket(serverAddr,12345);

             String message = "Hello from Client android emulator";
              try {

                     Log.d("TCP", "C: Sending: '" + message + "'");

                     PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(socket.getOutputStream())),true);

                     out.println(message);

                     Log.d("TCP", "C: Sent.");

                 Log.d("TCP", "C: Done.");



         } catch(Exception e) {

             Log.e("TCP", "S: Error", e);
                 } finally {

                    socket.close();

                  }
     } catch (Exception …

如何在Mifare Classic 1k中修改扇区预告片的访问位.我想要验证部门.

在将字符串解析为byte时遇到异常

String Str ="9B7D2C34A366BF890C730641E6CECF6F";

String [] st=Str.split("(?<=\\G.{2})");

byte[]bytes = new byte[st.length];
for (int i = 0; i <st.length; i++) {
 bytes[i] = Byte.parseByte(st[i]);
}

如何在java sun keytool中创建.bks密钥库,我该怎么办？

C:\Program Files\Java\jdk1.6.0\jre\bin>keytool -genkey -alias server3private -ke
ystore server3.private -storetype BKS -keyalg rsa -dname "CN=Your Name, OU=Your
Organizational Unit, O=Your Organization, L=Your City, S=Your State, C=Your Coun
try" -storepass tahirpw -keypass tahirpw

它给了我错误

keytool错误:java.security.KeyStoreException:找不到BKS