java _io_转换流输出,将读取的百度源码输入到文件

可以指定输出内容的字符集

不加装饰器: OutputStreamWiter os = new OutputStreamWriter(new FileOutputStream("D:/d/baidu"),"UTF-8"); //不指定字符集，将默认为工程字符集

加装饰器: BufferedWriter writer=new BufferedWriter(new OutputStreamWriter(new FileOutputStream("D:/d/baidu"),"UTF-8") );

try(BufferedReader reader=new BufferedReader(new InputStreamReader(new URL("http://www.baidu.com").openStream(),"UTF-8"));
	BufferedWriter writer=new BufferedWriter(new OutputStreamWriter(new FileOutputStream("D:/d/baidu.html"),"UTF-8")); //不指定字符集，默认是工程字符集
		)
{
	String s;
	while((s=reader.readLine())!=null)
	{
		writer.write(s);
		writer.newLine();
		writer.flush();
	}
	
}catch(IOException e)
{
	System.out.println("操作异常");
}