Java Outputstream to String

OutputStream存为String，OutputStream是输出流，用于输出文件内容，它本身不提供输入操作（也就是说没办法直接将OutputStream存为String）。下面是我找到的两个方法www.cdtarena.com
// method 1:
// 从文件中获取的OutputStream
OutputStream os = new FileOutputStream(fileName);
OutputStreamWriter outw = null;
outw = new OutputStreamWriter(os);


String str = null;
outw.write(str);
outw.close();
os.flush();
os.close();


// method 2:
// 从文件中获取的OutputStream
OutputStream os = new FileOutputStream(fileName);
ByteArrayOutputStream baos=new ByteArrayOutputStream();
os.write(baos.toByteArray());
str = baos.toString();

os.flush();
os.close();

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