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fix a spider init problem

master
yihua.huang 2013-07-29 10:59:23 +08:00
parent 54904851ea
commit 18fefa0c0a
1 changed files with 3 additions and 1 deletions
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4
webmagic-core/src/main/java/us/codecraft/webmagic/Spider.java
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@ -270,7 +270,9 @@ public class Spider implements Runnable, Task {
if (threadNum <= 0) { if (threadNum <= 0) {
throw new IllegalArgumentException("threadNum should be more than one!"); 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) { if (threadNum == 1) {
return this; return this;
} }