fix a spider init problem

18fefa0c · yihua.huang · 54904851 · 18fefa0c
Commit 18fefa0c authored Jul 29, 2013 by yihua.huang
Hide whitespace changes
Inline Side-by-side

Showing with 3 additions and 1 deletion

Spider.java ...agic-core/src/main/java/us/codecraft/webmagic/Spider.java +3 -1

No files found.
--- a/webmagic-core/src/main/java/us/codecraft/webmagic/Spider.java
+++ b/webmagic-core/src/main/java/us/codecraft/webmagic/Spider.java
@@ -270,7 +270,9 @@ public class Spider implements Runnable, Task {
        if (threadNum <= 0) {
            throw new IllegalArgumentException("threadNum should be more than one!");
        }
-        downloader = new HttpClientDownloader(threadNum);
+        if (downloader==null || downloader instanceof HttpClientDownloader){
+            downloader = new HttpClientDownloader(threadNum);
+        }
        if (threadNum == 1) {
            return this;
        }