#httpasyncclient 引起的内存泄漏问题
List<HttpUriRequest> cache = new ArrayList<HttpUriRequest>(n);
for (int i = 0; i < n; i++) {
HttpGet request = new HttpGet("http://www.baidu.com?a="+i);
cache.add(request);
}
HttpAsyncClient httpClient = new HttpAsyncClient();
int i = 0;
while (true){
final HttpUriRequest request = cache.get(i%cache.size());
httpClient.execute(request, new FutureCallback<HttpResponse>() {
public void completed(final HttpResponse response) {
System.out.println(request.getRequestLine() + "->" + response.getStatusLine());
}
public void failed(final Exception ex) {
System.out.println(request.getRequestLine() + "->" + ex);
}
public void cancelled() {
System.out.println(request.getRequestLine() + " cancelled");
}
});
i++;
Thread.sleep(100);
}
FutureCallback 类会被不断的创建，而在内部这个callback 是连接到httpget上，而httpget是个list cache 没释放。大量的回调类晋升到了old区，最终导致 Full GC 产生。