二、使用HttpPost抓取网页数据
private static CloseableHttpClient httpClient; private static BasicHttpContext httpContext; private static BasicCookieStore cookieStore; private static PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager(); private static RequestConfig globalConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.BEST_MATCH).build(); private static RequestConfig localConfig = RequestConfig.copy(globalConfig).setCookieSpec(CookieSpecs.BROWSER_COMPATIBILITY).build(); public String getHtml(String url){ HttpClientBuilder builder = HttpClients.custom(); cookieStore = new BasicCookieStore(); builder.setConnectionManager(cm); builder.setDefaultCookieStore(cookieStore); builder.setDefaultRequestConfig(globalConfig); httpClient = builder.build(); httpContext = new BasicHttpContext(); httpContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore); HttpPost httpPost = new HttpPost(url); httpPost.setConfig(localConfig); httpPost.setHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"); httpPost.setHeader("Accept-Encoding","gzip, deflate"); httpPost.setHeader("Accept-Language","zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3"); httpPost.setHeader("Connection","keep-alive"); httpPost.setHeader("Cookie","ASP.NET_SessionId=11vrr4ucwsgeqtmpyfx4hmvx; _5t_trace_sid=89c4ffb8633d267e4ae322a157b52471; _5t_trace_tms=1; CheckCode=X0P64"); httpPost.setHeader("User-Agent","Mozilla/5.0 (Windows NT 6.1; WOW64; rv:39.0) Gecko/20100101 Firefox/39.0"); List <NameValuePair> nvps = new ArrayList <NameValuePair>(); nvps.add(new BasicNameValuePair("pid", "99-C3-57-35-6D-70-3D-F2")); nvps.add(new BasicNameValuePair("CurrentlyPageIndex", "2")); httpPost.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8)); try { CloseableHttpResponse response = httpClient.execute(httpPost,httpContext); int status = response.getStatusLine().getStatusCode(); if (status >= 200 && status < 300) { HttpEntity httpEntity = response.getEntity(); if(httpEntity!=null){ String cont = trimLineToString(httpEntity, "UTF-8"); EntityUtils.consume(httpEntity); return cont; } } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return null; } public synchronized static String trimLineToString(HttpEntity entiry,String charset) { StringBuffer sb = new StringBuffer(); BufferedReader reader = null; try { InputStream instream = entiry.getContent(); reader = new BufferedReader(new InputStreamReader(instream, charset)); String str = null; while ((str = reader.readLine()) != null) { if(StringUtils.isNotBlank(str)) { sb.append(str.trim()); } } instream.close(); } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { if (reader != null) { try { reader.close(); } catch (IOException e) { e.printStackTrace(); } } } return sb.toString(); } |
