connection

问题 is there a way to change the database name of a connection instead of adding another? It's okay if I add 3 or 5 databases in Config.database.connections, but what If I have 100 or more databases I am working with? Since all use the same HOST, USERNAME and PASSWORD, is there anyway to just change the database name dynamically and work with that during the whole session? I tried Config::set('database.connections.mysql.database', 'database1'); but when I try using queries , it still uses the

问题 My application is downloading data from web such as JSON, pictures, e.t.c. When installed the amount of data is supposed to be more than 50mb. It will be expensive for those who use 3G connection. I guess my application needs to find out what is the type of the internet connection, I was told that Apple has it's own requirements for downloads, but I couldn't find any useful information from internet. Besides that my app gives an option to download wallpaper to pictures gallery, and I guess I

问题 I am building a web application that needs to be working seamless when being online or off line. For this need to be able to check my connection with the server . The main devices that are to be supported are iphone3+4, ipad, a netbook with chrome and android 2.1+. The navigator.onLine is not exactly what I am looking for. This is unreliable and only checks if you have connectivity, not if you are connected to a specific server. I tried jQuery.getJSON to connect to a ping web-service on my

问题 I am trying to learn using RSelenium. I am stuck with just trying to start the server using rsDriver. I am simply trying to run the code below and got the following error: rD <- rsDriver() checking Selenium Server versions: BEGIN: PREDOWNLOAD Error in open.connection(con, "rb") : Peer certificate cannot be authenticated with given CA certificates I searched around stack overflow and found out we can give options to rsDriver using below but I still got error: my_extra <- list("--ignore-ssl

问题 I want to use the Wininet function InternetCheckConnection to check whenever the machine is connected to the internet and can access a specific host. The problem is that this function is always returning false , no matter the URL I put on it. MSDN link 回答1: Following combination works for me on Windows 7 and Windows XP SP3: InternetCheckConnection("http://www.google.com", FLAG_ICC_FORCE_CONNECTION, 0) ; GetLastError() returns 0 if the connexion is possible and it returns 12029 (The attempt to

问题 Is it possible to create view in my database server of another servers database table? Let's say you have a database called Testing on server1 and you have another database Testing2 on server2 . Is it possible to create view of Testing2 's table Table2 in server1 's database Testing ? Also, I am using SQL Server 2008. Please let me know if you have any questions. Thanks, 回答1: Yes, you can. First, you need to link to the other server, using something like sp_addlinkedserver . Then you can

问题 I'm writing a python program the accesses a database. I want to catch three types of exceptions when I make a http request. Timeouts, network errors, and http errors. I'm looking for the best way to deal with this situation. I need to check for these exceptions multiple times in multiple areas of my code, and it will look something like this each time: try: //some request except timeout: print '\nException: Timeout Error' except connection error: print '\nException: Network Error' except http

问题 I am new to Java and HttpURLConnection. Should I close the opened IO streams before dropping the connection. If I close the streams, should I need to drop the connection as well? Which is the proper way of implementation? try { String uri = "http://localhost:8081/RESTEASY/saju/post/text"; URL url = new URL(uri); connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("POST"); connection.setRequestProperty("Accept", "text/plain"); connection.setRequestProperty(

问题 I'm trying to load the package StanfordCoreNLP to get the correct parsing for the movie reviews presented in their page (https://nlp.stanford.edu/sentiment/treebank.html): (I'm using MAC) nlp = StanfordCoreNLP("/Users//NLP_models/stanford-corenlp-full-2018-01-31") But get the error: Traceback (most recent call last): File "/Users/anaconda3/lib/python3.6/site-packages/psutil/_psosx.py", line 295, in wrapper return fun(self, *args, **kwargs) File "/Users/anaconda3/lib/python3.6/site-packages

问题 I have a number of ASP.NET applications which run fine for months, then stop dead with the message: "....ConnectionString property has not been initialized". The application uses strongly typed datasets, with the connection string stored in the web.config file. If you just search the web for the message in the subject, you get all sorts of answers relating to incorrectly configured web.config files. In this case, however, the connection works - then randomly stops working. The resolution, I