persistent

问题 I got a very common question when I was using Spring JDBCTemplate, I want to get the ID value after I inserted a new data record into database, this ID value will be referred to another related table. I tried the following way to insert it, but I always return 1 rather than its real unique ID. (I use MySQL as the database) public int insert(BasicModel entity) { String insertIntoSql = QueryUtil.getInsertIntoSqlStatement(entity); log.info("SQL Statement for inserting into: " + insertIntoSql);

问题 I got a very common question when I was using Spring JDBCTemplate, I want to get the ID value after I inserted a new data record into database, this ID value will be referred to another related table. I tried the following way to insert it, but I always return 1 rather than its real unique ID. (I use MySQL as the database) public int insert(BasicModel entity) { String insertIntoSql = QueryUtil.getInsertIntoSqlStatement(entity); log.info("SQL Statement for inserting into: " + insertIntoSql);

问题 In the Persistent chapter of the Yesod book, an example is given where this entity {-# LANGUAGE QuasiQuotes, TypeFamilies, GeneralizedNewtypeDeriving, TemplateHaskell, OverloadedStrings, GADTs #-} import Database.Persist import Database.Persist.TH import Database.Persist.Sqlite import Control.Monad.IO.Class (liftIO) mkPersist sqlSettings [persist| Person name String age Int deriving Show |] generates the code {-# LANGUAGE TypeFamilies, GeneralizedNewtypeDeriving, OverloadedStrings, GADTs #-}

问题 What are the exact steps required for a cookie to persist after a browser is closed? At the moment I have: createPersistentCookie set to true on LoggedIn event. MachineKey specified. Forms sliding expiration set to true . As long as the browser is open, the user will stay logged in, but as soon as it's closed, and it doesn't matter for how long, the user will need to log in again. What am I missing? EDIT: I went through the article pointed out by marapet (see comments below) and it made me

问题 I'm a relative Android newbie writing a timer application. I'm using a custom countdown timer class which is a member of the main activity class, and it spawns a Handler to run each second. When I close the app, the main activity stops, but the timer continues to run in the background, as I want. The problem is that when the activity restarts, the original timer is now an orphan, and I can't find a way of re-attaching to it. What's the best way of keeping a persistent connection to a timer

问题 I'm working on a program in Python for Windows, and would like to save variables and user preferences so that I can recall them even after the program has been terminated and restarted. Is there an ideal way to do this on Windows machines? Would _winreg and the Windows registry be suited for this task? Or do I need to create some sort of database of my own? 回答1: You're usually going to want to store it in a configuration folder in the "home" folder. That's easy on *nix systems, more difficult

问题 I've got an issue trying to get the Android application (well, Service, it case it makes any difference) to use persistent HTTP 1.1 connections. The following loop (simplified test case) works through a single TCP session on a desktop JRE, but on an Android device results in the whole socket creation/teardown cycle. while (true) { URL url; try { url = new URL("http://10.0.0.125:8080/SRV?"); URLConnection connection = url.openConnection(); HttpURLConnection httpConnection = (HttpURLConnection)

问题 From this article on Wikipedia: Keepalive messages were not officially supported in HTTP 1.0. In HTTP 1.1 all connections are considered persistent, unless declared otherwise. Does this mean that using this mechanism I can actually simulate a TCP socket connection? Using this can I make a Server "push" data to a client? Are all HTTP connections, even the one I am using to connect to Stack Overflow "HTTP persistent"? Does the COMET technology of server push use this mechanism of HTTP

问题 i really cant figure out where my problem is. Im using Titan 0.5.0 (It's the same problem with the newer Titan versions...) I want to load a bunch of vertices and edges from a csv file with 100k entries (each line results in at least 3 nodes and some edges) into my graph. It's taking about 5 minutes to finally complete the import. So i tried the same with the configuration storage.batch-loading = true. Well it's significant faster with only 2 minutes to complete the import. But the problem is

问题 I want to make an HTTPS request to a real-time stream and keep the connection open so that I can keep reading content from it and processing it. I want to write the script in python. I am unsure how to keep the connection open in my script. I have tested the endpoint with curl which keeps the connection open successfully. But how do I do it in Python. Currently, I have the following code: c = httplib.HTTPSConnection('userstream.twitter.com') c.request("GET", "/2/user.json?" + req.to_postdata(