【授权】通过code获取access_token示例

@RequestMapping(value = "/home", method = RequestMethod.GET)//需要设置的IDP的回调地址redirect_uri
public Object get(@RequestParam("code")String code) throws IOException {
    if(StringUtils.isNotBlank(code)){
        String accessKeyId = "xxxx";
        String secretAccessId = "xxxx";
        HttpClient httpClient = NdHttpClientBuilder.getHttpClient(accessKeyId, secretAccessId);//此类由sdk提供
        JSONObject obj = new JSONObject();
        obj.put("access_key_id", accessKeyId);
        obj.put("secret_access_key", secretAccessId);
        obj.put("code", code);
        obj.put("grant_type", "authorization_code");
        HttpPost request = new HttpPost(API_GATEWAY_HOST+"/oauth/access_token");
        request.setHeader("Content-Type","application/json");
        StringEntity entity = new StringEntity(obj.toString());
        request.setHeader("sdp-app-id",SDP_APP_ID);
        request.setEntity(entity);
        HttpHost httpHost = HttpHost.create(API_GATEWAY_HOST);
        HttpResponse httpResponse = httpClient.execute(httpHost,request);
        if(httpResponse.getStatusLine().getStatusCode()==200){
            String result = EntityUtils.toString(httpResponse.getEntity());
            JSONObject token = JSONObject.parseObject(result,JSONObject.class);
            return token;
        }
        return EntityUtils.toString(httpResponse.getEntity());
    }
    return "code is null";
}