httprequest.java

对于cmpp3.0 开发有一定的帮助,请大家下载下来进行研究.

package com.zhanghao.provision;

import java.io.DataInputStream;
import java.io.InputStream;
import java.io.ByteArrayInputStream;

public class HttpRequest {

  protected DataInputStream inputStream;

  protected boolean change = false;

  public HttpRequest() {
  }

  public HttpRequest(InputStream inputStream) {
    this.inputStream = new DataInputStream(inputStream);
  }

  public DataInputStream getInputStream() throws Exception{
    try{
      System.out.println("parseHeaders....");
      parseHeaders();
      return this.inputStream;
    }
    catch(Exception ex){
      throw new Exception("取得InputStream失败:"+ex.getMessage());
    }
  }


  public void parseHeaders() throws Exception{
    if(!saveChange()){
      try{
        String str = inputStream.readLine();
        String strTemp = "";
        strTemp = strTemp+str;
        int iLength = 0;
        while(!str.equals("")){
          System.out.println(str);
          str = inputStream.readLine();
          if(str.startsWith("Content-Length:")){
            iLength = Integer.parseInt(str.substring(str.indexOf(" ")).trim());
          }
        }
        byte[] bb = new byte[iLength];
        inputStream.readFully(bb,0,iLength);

        java.io.ByteArrayInputStream binput = new ByteArrayInputStream(bb);
        inputStream = new DataInputStream(binput);
      }
      catch(Exception ex){
        throw new Exception("解析HTTP包头失败:"+ex.getMessage());
      }
    }
    saveChange();
  }


  public boolean saveChange(){
    if(!change){
      change = true;
      return false;
    }
    return true;
  }

  public boolean getChange(){
    return this.change;
  }

}