我有一个循环遍历一堆URL,对于每个URL,我正在执行以下操作:
private String doQuery(String url) {
HttpGet httpGet = new HttpGet(url);
setDefaultHeaders(httpGet); // static method
HttpResponse response = httpClient.execute(httpGet); // httpClient instantiated in constructor
int rc = response.getStatusLine().getStatusCode();
if (rc != 200) {
// some stuff...
return;
}
HttpEntity entity = response.getEntity();
if (entity == null) {
// some stuff...
return;
}
// process the entity, get input stream etc
}
第一次查询没问题,第二次会抛出以下异常:这只是一个简单的单线程应用程序。如何释放连接?Exception in thread "main" java.lang.IllegalStateException: Invalid use of SingleClientConnManager: connection still allocated. Make sure to release the connection before allocating another one. at org.apache.http.impl.conn.SingleClientConnManager.getConnection(SingleClientConnManager.java:199) at org.apache.http.impl.conn.SingleClientConnManager$1.getConnection(SingleClientConnManager.java:173)......