学步园

1.接收HTTP响应结果(获得字节流,需要转换为字符串)：

(1)read方法返回-1代表结束

    此方法占用内存大，用来接收网页不适合

InputStream socketIn=socket.getInputStream();<br /> ByteArrayOutputStream buffer=new ByteArrayOutputStream();<br /> byte[]buff=new byte[1024];<br /> int len=-1;<br /> while((len=socketIn.read(buff))!=-1){<br /> buffer.write(buff,0,len);<br /> }<br /> System.out.println(new String(buffer.toByteArray()));

(2)BufferReader方法返回null代表结束

逐行读取网页较适合

InputStream socketIn=socket.getInputStream();<br /> BufferedReader br=new BufferedReader(new InputStreamReader(socketIn));<br /> String data;<br /> while((data=br.readLine())!=null){<br /> System.out.println(data);<br /> } 

2.发送HTTP请求(发送的是字节流)

OutputStream socketOut=socket.getOutputStream();<br /> socketOut.write(sb.toString().getBytes()); 

3.常用的读写函数

/**<br /> *使用如下：<br /> PrintWriter pw=getWriter(socket);<br /> pw.println("要输出的字符串");<br /> **/<br /> private PrintWriter getWriter(Socket socket)throws IOException{<br /> OutputStream socketOut=socket.getOutputStream();<br /> return new PrintWriter(socketOut,true);<br /> }<br /> /**<br /> *使用如下：<br /> BufferedReader br=getReader(socket);<br /> String str=br.readLine();//读到的字符串<br /> **/<br /> private BufferedReader getReader(Socket socket)throws IOException{<br /> InputStream socketIn=socket.getInputStream();<br /> return new BufferedReader(new InputStreamReader(socketIn);<br /> }<br />