小賴的實戰記錄

這發生在我在第一台電腦寫Java時，

爬回的網頁資料，正常，是正確格式，

卻在上正式機之後，發生爬回網頁資料發生亂碼。

 

看了這篇文章之後

http://blog.csdn.net/izard999/article/details/8213178

 

發生，問題應該是在爬回後的串流，轉為字串時，未指定編碼格式造成，

可能用的就是windows的預設編碼格式，

剛好兩台的預設解析格式不一樣造成中文亂碼。

 

  public String getContentByHttpURLConnection(String gateway_url,String encoding, String methodStr)
    {
        String respond = "";
        HttpURLConnection conn = null;
        try
        {
            byte[] postData = "".getBytes("UTF-8");

            URL url = new URL(gateway_url);
            conn = (HttpURLConnection) url.openConnection();
            conn.setDoOutput(true);
            conn.setUseCaches(false);
            conn.setRequestMethod(methodStr);
            conn.setRequestProperty("Content-Type",
                    "application/x-www-form-urlencoded;charset="+encoding);
            conn.setRequestProperty("Content-Length",
                    Integer.toString(postData.length));

            OutputStream out = conn.getOutputStream();
            out.write(postData);
            out.close();

            respond = conn.getResponseCode() + " "+ conn.getResponseMessage() ;
            System.out.println(respond);
            InputStream ist = conn.getInputStream();
            BufferedReader in = new BufferedReader(new InputStreamReader(ist,encoding));
            StringBuffer sb = new StringBuffer();
            char[] c = new char[1];
            while(in.read(c,0,1)==1)
            {
               sb.append(c[0]);
            }

            respond = sb.toString();

            sb.setLength(1);
            in.close();
            ist.close();

            postData = null;
            sb =null;
            in =null;
            ist = null;
            out =null;
            url =null;
        } catch (Exception e) {
            //e.printStackTrace();
            respond = e.getMessage();
            e.printStackTrace();
        } finally {
            if (conn != null) {
                conn.disconnect();
            }
            conn =null;
        }

        return respond;
    }

 

重點在編碼格式參數

BufferedReader in = new BufferedReader(new InputStreamReader(ist,encoding));