java.net.SocketでHTTP POSTのリクエストを受信したい

import ・・・

public class HttpRequest {

	private String requestHeader;
	
	private String requestBody;
	
	public HttpRequest(Socket socket) throws IOException{
		
		InputStream is = null;
		InputStreamReader isr = null;

		try{
			
			is = socket.getInputStream();
			isr = new InputStreamReader(is);
			
			String requestMessage = readHttpRequest(isr);
			divideHeaderAndBody(requestMessage);			
			
		}catch(IOException e){
			throw e;
		}finally{
			try{isr.close();}catch(Exception e){}
			try{is.close();}catch(Exception e){}
		}
	}
	
	private String readHttpRequest(InputStreamReader isr) throws IOException{
		
		// (3)〜(4)の処理
		char[] c = new char[10000000];	// 配列要素数は適当
		int i = 0;
		
		try{
			while((c[i] = (char)isr.read()) != (char)-1){
				i++;	
			}
			
			return new String(c);
			
		}catch(IOException e){
			throw e;
		}
		
	}
	
	private void divideHeaderAndBody(String requestMessage){
		・・・
	}
	
	public String getRequestHeader(){
		return this.requestHeader;
	}
	
	public String getRequestBody(){
		return this.requestBody;
	}
	
}