resovle conflict

webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpClientGenerator.java

@@ -63,6 +63,14 @@ public class HttpClientGenerator {
             httpClientBuilder.setDefaultCredentialsProvider(credsProvider);
         }
 
+        if(site!=null&&site.getHttpProxy()!=null&&site.getUsernamePasswordCredentials()!=null){
+            credsProvider = new BasicCredentialsProvider();
+            credsProvider.setCredentials(
+                    new AuthScope(site.getHttpProxy()),//可以访问的范围
+                    site.getUsernamePasswordCredentials());//用户名和密码
+            httpClientBuilder.setDefaultCredentialsProvider(credsProvider);
+        }
+        
         httpClientBuilder.setConnectionManager(connectionManager);
         if (site != null && site.getUserAgent() != null) {
             httpClientBuilder.setUserAgent(site.getUserAgent());
@@ -82,13 +90,6 @@ public class HttpClientGenerator {
             });
         }
 
-        if(site!=null&&site.getHttpProxy()!=null&&site.getUsernamePasswordCredentials()!=null){
-            CredentialsProvider credsProvider = new BasicCredentialsProvider();
-            credsProvider.setCredentials(
-                    new AuthScope(site.getHttpProxy()),//可以访问的范围
-                    site.getUsernamePasswordCredentials());//用户名和密码
-            httpClientBuilder.setDefaultCredentialsProvider(credsProvider);
-        }
 
         SocketConfig socketConfig = SocketConfig.custom().setSoKeepAlive(true).setTcpNoDelay(true).build();
         httpClientBuilder.setDefaultSocketConfig(socketConfig);