java 将 ByteMessage 转换为字符串？
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Convert ByteMessage to String?
提问by user595234
What is best way to convert ByteMessageto String? I have the following code, do we have a more clean way?
什么是转换最好的方式ByteMessage来String？我有以下代码，我们有更干净的方法吗？
BytesMessage byteMessage; // set byteMessage
byte[] byteArr = new byte[(int)byteMessage.getBodyLength()];
for (int i = 0; i < (int) byteMessage.getBodyLength(); i++) {
byteArr[i] = byteMessage.readByte();
}
String msg = new String(byteArr);
回答by rlinden
The BytesMessage specificationhas a method readUTF() that might be helpful. Just replace all lines from BytesMessage up to the definition of the String with a call to this method.
该BytesMessage规范有可能会有所帮助的方法的readUTF（）。只需调用此方法替换从 BytesMessage 到 String 定义的所有行。
回答by jtahlborn
well, first it would probably be more efficient to call readBytes(byte[]).
好吧，首先调用 readBytes(byte[]) 可能会更有效。
second, you are converting the bytes to a String using the platform character encoding, which is always dangerous. you should be using an explicit charset. either one known to be specified for the message type, or possibly a charset included as a message property.
其次，您使用平台字符编码将字节转换为字符串，这总是很危险的。您应该使用显式字符集。已知为消息类型指定的一种，或者可能包含作为消息属性的字符集。
回答by tgoossens
This might help you out
这可能会帮助你
String msg = byteArr.readUTF();
You can also avoid the loop by using
您还可以通过使用避免循环
byteMessage.readBytes(byteArr);
回答by Tomasz Nurkiewicz
If you know that these bytes are UTF-8 encoded, use BytesMessage.readUTF()convenience method:
如果您知道这些字节是 UTF-8 编码的，请BytesMessage.readUTF()使用方便的方法：
String s = byteMessage.readUTF();
If the byte[]array represents a string encoded with a different character encoding, e.g. UTF-16, use String(byte[], java.lang.String)constructor:
如果byte[]数组表示使用不同字符编码（例如 UTF-16）编码的字符串，请使用String(byte[], java.lang.String)构造函数：
byte[] byteArr = new byte[(int)byteMessage.getBodyLength()];
byteMessage.readBytes(byteArr);
String msg = new String(byteArr, "UTF-16");
Finally, consider using TextMessageto avoid the whole hustle.
最后，考虑使用TextMessage以避免整个喧嚣。
