在c#中转换为字符串到字节数组，在java中转换为字节数组到字符串

本文关键字：数组 字符串 转换 字节数 字节 到字节 java | 更新日期: 2023-09-27 18:25:44

我有客户端-服务器设置，客户端在C#中，服务器在Java中。现在，我将一个字符串编码为字节数组，并将其发送到Java服务器，但当Java解码时，它会收到一个String，每个字符后面都有一个空格：

Sending PLAIN  >>>>> Received P L A I N

C#代码（发送方）：

static byte[] GetBytes(string str) {
    byte[] bytes = Encoding.UTF8.GetBytes(str);
    // System.Buffer.BlockCopy(str.ToCharArray(), 0, bytes, 0, bytes.Length);
    return bytes;
}

Java代码（接收器）：

protected SaslResponse receiveSaslMessage() throws TTransportException {
     underlyingTransport.readAll(messageHeader, 0, messageHeader.length);
     byte statusByte = messageHeader[0];
    // Bytes for C# code received here
    byte[] payload = new byte[EncodingUtils.decodeBigEndian(messageHeader, STATUS_BYTES)];
    underlyingTransport.readAll(payload, 0, payload.length);
    NegotiationStatus status = NegotiationStatus.byValue(statusByte);
    if (status == null) {
        sendAndThrowMessage(NegotiationStatus.ERROR, "Invalid status " + statusByte);
    } else if (status == NegotiationStatus.BAD || status == NegotiationStatus.ERROR) {
        try {
            String remoteMessage = new String(payload, "UTF-8");
            throw new TTransportException("Peer indicated failure: " + remoteMessage);
        } catch (UnsupportedEncodingException e) {
            throw new TTransportException(e);
        }
    }
    if (LOGGER.isDebugEnabled())
        LOGGER.debug(getRole() + ": Received message with status {} and payload length {}",
               status, payload.length);
    return new SaslResponse(status, payload);
}
protected void handleSaslStartMessage() throws TTransportException, SaslException {
    // call upper method
    SaslResponse message = receiveSaslMessage();
    LOGGER.debug("Received start message with status {}", message.status);
    if (message.status != NegotiationStatus.START) {
        sendAndThrowMessage(NegotiationStatus.ERROR, "Expecting START status, received " + message.status);
    }
    // Bytes converted to string here - Received P L A I N
    String mechanismName = new String(message.payload);
    TSaslServerDefinition serverDefinition = serverDefinitionMap.get(mechanismName);
    LOGGER.debug("Received mechanism name '{}'", mechanismName);
    if (serverDefinition == null) {
        sendAndThrowMessage(NegotiationStatus.BAD, "Unsupported mechanism type " + mechanismName);
    }
    SaslServer saslServer = Sasl.createSaslServer(serverDefinition.mechanism,
    serverDefinition.protocol, serverDefinition.serverName, serverDefinition.props,
    serverDefinition.cbh);
    setSaslServer(saslServer);
}

在c#中转换为字符串到字节数组，在java中转换为字节数组到字符串

首先在C#代码中添加调试：

static byte[] GetBytes(string str) {
    byte[] bytes = Encoding.UTF8.GetBytes(str);
    // System.Buffer.BlockCopy(str.ToCharArray(), 0, bytes, 0, bytes.Length);
    Console.WriteLine("Base64 debug: " + Convert.ToBase64String(data));
    return bytes;
}

然后同样进入Java代码：

// Bytes converted to string here - Received P L A I N
System.out.println("Base64 debug: " + new sun.misc.BASE64Encoder().encode(message.payload));
String mechanismName = new String(message.payload);

最终替换：

//String mechanismName = new String(message.payload);
String mechanismName = new String(message.payload, "UTF-8");
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