java PrintWriter 和 byte[] 问题
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PrintWriter and byte[] problem
提问by senzacionale
byte[] data = (byte[])opBinding.execute();
PrintWriter out = new PrintWriter(outputStream);
out.println(data);
out.flush();
out.close();
but instead of text i get @84654. How can i add byte[] to PrintWriter? I need byte[] and not strinf becouse i have encoing problems with ?????
但我得到的不是文本而是@84654。如何将 byte[] 添加到 PrintWriter？我需要 byte[] 而不是 strinf 因为我有编码问题？？？？
回答by Kal
You can use the outputstream directly to write the bytes.
您可以直接使用输出流来写入字节。
outputStream.write(byte[] b);
回答by Jon Skeet
PrintWriteris meant for textdata, not binarydata.
PrintWriter用于文本数据，而不是二进制数据。
It sounds like you should quite possibly be converting your byte[]to a String, and then writing that string out - assuming the PrintWriteryou're writing to uses an encoding which supports the characters you're interested in.
听起来您很可能应该将您的转换byte[]为 a String，然后将该字符串写出 - 假设PrintWriter您要写入的对象使用支持您感兴趣的字符的编码。
You'll also need to know the encoding that the original text data has been encoded in for the byte[], in order to successfully convert to text to start with.
您还需要知道原始文本数据已为 编码的编码byte[]，以便成功转换为文本以开始。
回答by nfechner
The problem is, that your code calls (implicitly) data.toString()before returning the result to your printlnstatement.
问题是，您的代码data.toString()在将结果返回到您的println语句之前调用（隐式）。
回答by Pratik
try this
试试这个
byte[] data = (byte[])opBinding.execute();
PrintWriter out = new PrintWriter(outputStream);
out.println(new String(data));
out.flush();
out.close();
回答by Sathyan
It worked for me.. when i used
它对我有用..当我使用
PrintWriter out=new PrintWriter(System.out);
Also it converts the byte data to String using toString()method.. So it may be a reason for your encoding problem
它还使用toString()方法将字节数据转换为字符串..所以这可能是您编码问题的原因
