问题描述
所以我想将DatagramPacket的getData()函数返回的字节数组转换为字符串。我知道将整个字节数组转换为字符串的方法只是:
So I want to convert a byte array returned by the DatagramPacket's getData() function into a string. I know the way to convert the whole byte array to string is just:
String str = new String(bytes);
但是,这会在末尾输出空字符。因此,如果字节数组为
However, this prints out null characters at the end. So if the byte array was
[114, 101, 113, 117, 101, 115, 116, 0, 0, 0]
0将在控制台上打印出空框。所以我基本上只想打印出来:
The 0's print out empty boxes on the console. So I basically only want to print out:
[114, 101, 113, 117, 101, 115, 116]
所以我做了这个功能:
public void print(DatagramPacket d) {
byte[] data = d.getData();
for(int i=0; i< d.getLength(); i++) {
if(data[i] != 0)
System.out.println( data[i] );
}
}
但不幸的是,这是打印出实际数字而不是这些信。因此,如何将每个字节转换为字符串并打印出来。或者,如果还有另一种方法来打印字节数组,但最后没有空值,那就没问题了。
But unfortunately this is printing out the actual numbers instead of the letters. So how can I convert each individual byte to a string and print that out. Or if there is another way to print the byte array without the nulls at the end then that'll be fine too.
推荐答案
只需将每个不为0的int强制转换为char。您可以在打印中对其进行测试:
Just cast each int, that is not 0, to a char. You can test it in your print:
System.out.println((char)data[i]);
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