這期內(nèi)容當(dāng)中小編將會(huì)給大家?guī)?lái)有關(guān)如何在微信公眾號(hào)中獲取access_token,文章內(nèi)容豐富且以專業(yè)的角度為大家分析和敘述,閱讀完這篇文章希望大家可以有所收獲。
1.項(xiàng)目添加httpclient相關(guān)依賴,示例使用httpclient請(qǐng)求微信服務(wù)器,獲取微信返回結(jié)果。
<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient --> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.5.3</version> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpcore --> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpcore</artifactId> <version>4.4.6</version> </dependency>
2.httpClientUtil類,網(wǎng)上隨手找的 試了一下本例的doget方法 沒(méi)有問(wèn)題,其他的 暫不考慮
public class HttpClientUtil { public static String doGet(String url, Map<String, String> param) { // 創(chuàng)建Httpclient對(duì)象 CloseableHttpClient httpclient = HttpClients.createDefault(); String resultString = ""; CloseableHttpResponse response = null; try { // 創(chuàng)建uri URIBuilder builder = new URIBuilder(url); if (param != null) { for (String key : param.keySet()) { builder.addParameter(key, param.get(key)); } } URI uri = builder.build(); // 創(chuàng)建http GET請(qǐng)求 HttpGet httpGet = new HttpGet(uri); // 執(zhí)行請(qǐng)求 response = httpclient.execute(httpGet); // 判斷返回狀態(tài)是否為200 if (response.getStatusLine().getStatusCode() == 200) { resultString = EntityUtils.toString(response.getEntity(), "UTF-8"); } } catch (Exception e) { e.printStackTrace(); } finally { try { if (response != null) { response.close(); } httpclient.close(); } catch (IOException e) { e.printStackTrace(); } } return resultString; } public static String doGet(String url) { return doGet(url, null); } public static String doPost(String url, Map<String, String> param) { // 創(chuàng)建Httpclient對(duì)象 CloseableHttpClient httpClient = HttpClients.createDefault(); CloseableHttpResponse response = null; String resultString = ""; try { // 創(chuàng)建Http Post請(qǐng)求 HttpPost httpPost = new HttpPost(url); // 創(chuàng)建參數(shù)列表 if (param != null) { List<NameValuePair> paramList = new ArrayList<>(); for (String key : param.keySet()) { paramList.add(new BasicNameValuePair(key, param.get(key))); } // 模擬表單 UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList,"utf-8"); httpPost.setEntity(entity); } // 執(zhí)行http請(qǐng)求 response = httpClient.execute(httpPost); resultString = EntityUtils.toString(response.getEntity(), "utf-8"); } catch (Exception e) { e.printStackTrace(); } finally { try { response.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return resultString; } public static String doPost(String url) { return doPost(url, null); } public static String doPostJson(String url, String json) { // 創(chuàng)建Httpclient對(duì)象 CloseableHttpClient httpClient = HttpClients.createDefault(); CloseableHttpResponse response = null; String resultString = ""; try { // 創(chuàng)建Http Post請(qǐng)求 HttpPost httpPost = new HttpPost(url); // 創(chuàng)建請(qǐng)求內(nèi)容 StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON); httpPost.setEntity(entity); // 執(zhí)行http請(qǐng)求 response = httpClient.execute(httpPost); resultString = EntityUtils.toString(response.getEntity(), "utf-8"); } catch (Exception e) { e.printStackTrace(); } finally { try { response.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return resultString; } }
3.第三步就是簡(jiǎn)單的測(cè)試代碼了
public class WeChatAccessTokenTest { public static void main(String[] args) { Map<String, String> params = new HashMap<>(); // TODO: 2018/11/16 *號(hào)改成真實(shí)appid params.put("appid", "******"); // TODO: 2018/11/16 *號(hào)改成真實(shí)secret params.put("secret", "******"); params.put("grant_type", "client_credential"); String response = HttpClientUtil.doGet("https://api.weixin.qq.com/cgi-bin/token", params); JSONObject accessTokenObject = JSONObject.parseObject(response); String accessToken = accessTokenObject.getString("access_token"); Long expire = accessTokenObject.getLong("expires_in"); System.out.println(accessToken); } }
上述就是小編為大家分享的如何在微信公眾號(hào)中獲取access_token了,如果剛好有類似的疑惑,不妨參照上述分析進(jìn)行理解。如果想知道更多相關(guān)知識(shí),歡迎關(guān)注創(chuàng)新互聯(lián)網(wǎng)站建設(shè)公司行業(yè)資訊頻道。
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