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How to pass a user defined argument in scrapy spider
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Alternatively we can use ScrapyD which expose an API where we can pass the start_url and spider name. ScrapyD has api's to stop/start/status/list the spiders.
pip install scrapyd scrapyd-deploy
scrapyd
scrapyd-deploy local -p default
scrapyd-deploy will deploy the spider...
In JPA 2, using a CriteriaQuery, how to count results
I am rather new to JPA 2 and it's CriteriaBuilder / CriteriaQuery API:
7 Answers
7
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Android 4.3 Bluetooth Low Energy unstable
...ergy (testing on the Nexus 4). After getting started with the official BLE APIs in Android 4.3, I have noticed that after I connect a device for the first time I am rarely able to successfully connect to / communicate with that device or any other device again.
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Why should I use document based database instead of relational database?
...their website)
A document database server, accessible via a RESTful JSON API. Generally, relational databases aren't simply accessed via REST services, but require a much more complex SQL API. Often these API's (JDBC, ODBC, etc.) are quite complex. REST is quite simple.
Ad-hoc and schema-free ...
How to check if an activity is the last one in the activity stack for an application?
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UPDATE (Jul 2015):
Since getRunningTasks() get deprecated, from API 21 it's better to follow raukodraug answer or Ed Burnette one (I would prefer second one).
There's possibility to check current tasks and their stack using ActivityManager.
So, to determine if an activity is the last o...
如何实现phpcms和discuz的Cookie同步 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...on uc_user_synlogin($uid) {
$uid = intval($uid);
$return = uc_api_post('user', 'synlogin', array('uid'=>$uid));
return $return;
}
修改为
function uc_user_synlogin($uid) {
require_once './include/common.inc.php';
global $_CGLOBAL;
$uid = intval($uid);
...
ucenter应用之间cookietime不能传送问题解决 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...on uc_user_synlogin($uid) {
$uid = intval($uid);
$return = uc_api_post('user', 'synlogin', array('uid'=>$uid));
return $return;
}
修改为
function uc_user_synlogin($uid) {
require_once './include/common.inc.php';
global $_CGLOBAL;
$uid = intval($uid);
...
天气API：[url]https://devapi.qweather.com/v7/weather/3d?location=10101...
天气API：https://devapi.qweather.com/v7/w ... 400b695bdf067ce148d
web客户端，api, POST请求，不响应。提示：请求头信息有误：1不是列表类...
通过postman,测试的一个api ，正常相应。 web客户端，post请求，请求不成功，相应代码406。 设置请求头后，提示请求头有误：1不是请求类型。怎么办？设置请求标头的方式有以下3种：
1、二维列表，非主贴内容种的普通单列...
Android notification is not showing
...ce without this check, the notification won't show up, even if your device API>=26.
– Koushik Shom Choudhury
Jul 26 '19 at 15:25
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