fix:恢复了findCourseById的内容

seecoder-portal-server/src/main/java/cn/seecoder/seecoderportalserver/serviceImpl/HttpServiceImpl.java

@@ -167,7 +167,7 @@ public class HttpServiceImpl implements HttpService {
             httpGet.setHeader("Authorization", token);
         }
         httpGet.setConfig(RequestConfig.DEFAULT);
-        CloseableHttpClient client = HttpServiceImpl.createUnsafeHttpClient();
+        CloseableHttpClient client = HttpClients.createDefault();
         CloseableHttpResponse response = client.execute(httpGet);
         HttpEntity entity = response.getEntity();
         String result = EntityUtils.toString(entity);