新浪微博开发之自动获取AccessToken

来源：互联网发布：caffe教程数据层视觉层编辑：程序博客网时间：2024/05/10 07:45

第一篇博客。

前段时间研究新浪微博开发，发现官方提供的SDK（java版）里获取AccessToken竟然需要手动从浏览器中复制code到命令行下才能获取AccesToken，明显很不友好啊，网上也没找到切实可行的办法，只能自己研究，用HttpClient写了个自动获取的方法，代码如下：

public AccessToken getAccessToken() throws WeiboException, IOException {Oauth oauth = new Oauth();String url="https://api.weibo.com/oauth2/authorize";HttpClient httpClient=new DefaultHttpClient();HttpPost post=new HttpPost(url);AccessToken accessToken=null;//初始化post数据List<NameValuePair> params=new ArrayList<NameValuePair>();params.add(new BasicNameValuePair("userId", "微博账号"));params.add(new BasicNameValuePair("passwd", "密码"));params.add(new BasicNameValuePair("action", "login"));params.add(new BasicNameValuePair("display", "default"));params.add(new BasicNameValuePair("withOfficalFlag", "0"));params.add(new BasicNameValuePair("withOfficalAccount", ""));params.add(new BasicNameValuePair("scope", ""));params.add(new BasicNameValuePair("ticket", ""));params.add(new BasicNameValuePair("isLoginSina", ""));params.add(new BasicNameValuePair("response_type", "code"));params.add(new BasicNameValuePair("regCallback", "https%3A%2F%2Fapi.weibo.com%2F2%2Foauth2%2Fauthorize%3Fclient_id%3D3616023689%26response_type%3Dcode%26display%3Ddefault%26redirect_uri%3Dhttp%3A%2F%2F127.0.0.1%26from%3D%26with_cookie%3D"));params.add(new BasicNameValuePair("redirect_uri", "http://127.0.0.1"));params.add(new BasicNameValuePair("client_id", "3616023689"));params.add(new BasicNameValuePair("appkey62", "5Pph2h"));params.add(new BasicNameValuePair("state", ""));params.add(new BasicNameValuePair("verifyToken", "null"));params.add(new BasicNameValuePair("from", ""));UrlEncodedFormEntity entity;entity=new UrlEncodedFormEntity(params,"utf-8");post.setEntity(entity);post.addHeader("Referer", "https://api.weibo.com/oauth2/authorize?client_id=3616023689&redirect_uri=http://127.0.0.1&response_type=code&state=&scope=");HttpResponse response=httpClient.execute(post);String[] location=response.getLastHeader("Location").toString().split("=");String code=null;if(location.length>1){code=location[1];Log.logInfo("Code:"+code);}if(code!=null){accessToken=oauth.getAccessTokenByCode(code);Log.logInfo("Access_Token:"+accessToken.getAccessToken());}return accessToken;}

因为新浪微博会将验证需要的code重定向到redirect_uri，而HttpClient貌似不支持，所以直接获取响应消息的code参数会报错。

我是通过获取响应的数据的Location值，即重定向地址来实现获取code的。这个Location的格式为redirect_uri?code=xxxxxxxx，我这里就是http://127.0.0.1?code=xxxxxxxx，通过截取Location来获取code，然后将code值传给SDK中提供的获取AccessToken的方法就可以成功获取到AccessToken了。

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