Android 用 HttpClient 抓取 html 页面内容的方法

private String getHtmlContent(final String url) {       String result = "";// 返回的结果       StringBuffer resultBuffer = new StringBuffer();        // 构造HttpClient的实例        HttpClient httpClient = new HttpClient();         // 创建GET方法的实例      GetMethod getMethod = new GetMethod(url);        // 使用系统提供的默认的恢复策略        getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,                new DefaultHttpMethodRetryHandler());      // getMethod.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET,"GB2312");       getMethod.getParams().setContentCharset("GB2312");         try {             // 执行getMethod        int statusCode = httpClient.executeMethod(getMethod);            if (statusCode != HttpStatus.SC_OK) {                System.err.println("Method failed: "+ getMethod.getStatusLine());             }     // 流式读取          // 读取内容          // byte[] responseBody = getMethod.getResponseBody();        // 处理内容            // String result = new String(responseBody,"GBK");            // result = getMethod.getResponseBodyAsString();            // System.out.println(result);           // System.out.println(getMethod.getResponseCharSet());           // 推荐做法           BufferedReader in = new BufferedReader(new InputStreamReader(                 getMethod.getResponseBodyAsStream(), getMethod.getResponseCharSet()));   String inputLine = null;     while ((inputLine = in.readLine()) != null) {                resultBuffer.append(inputLine);     resultBuffer.append("\n");      }     result = new String(resultBuffer);        return result;         } catch (HttpException e) {        // 发生致命的异常，可能是协议不对或者返回的内容有问题          System.out.println("Please check your provided http address!");      e.printStackTrace();       } catch (IOException e) {      // 发生网络异常           e.printStackTrace();       } finally {            // 释放连接             getMethod.releaseConnection();      }        return result;    }}

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