connection

问题 I'm using the following code to detect and connect to specific WiFi ssid when I press a button in android. Below is the code. Any help will be appreciated. ssid :- "myHotspot" & password:- "12345678" Button b1 = (Button) findViewById(R.id.button); <br> b1.setOnClickListener(new View.OnClickListener() { <br><br>@Override <br>public void onClick(View v) { wifiConfiguration.SSID = "\"myHotspot\""; wifiConfiguration.preSharedKey ="\"12345678\""; WifiManager wifiManager = (WifiManager)

问题 I develop am webservice based on apache tomcat 6.0.26, apache cxf 2.2.7, spring 3.0, hibernate 3.3 and sybase sqlanywhere 11. im using the latest JDBC Driver from SYBASE jconn.jar Version 6. The persistence layer is based on spring + hibernate dao, the connection is configured via a JNDI datasoure (META-INF directory). It seems that, during longer times of inactivity, the connection from the webservice to the database is closed. Exception: java.sql.SQLException: JZ0C0: Connection is already

问题 I am testing currently a H2 DB in memory mode. I set up a connection by h2Con = DriverManager.getConnection( "jdbc:h2:mem:db1", "SA", ""); I want to some imports with dbunit and set up dbUnits db connection IDataBaseConnection dBUnitConnection = new DatabaseConnection(h2con); and the imports which i want to query later So my question is, in memory mode, when can i close the connection? Normaly i do something like this try{ //some sql query }catch{ //error handling }finally{ if(connection!

问题 Where is the most secure place to put MySQL database connection details when connecting via a PHP script? $connection = mysql_connect($hostname, $username, $password); if (!$connection) {die('Could not connect: ' . mysql_error());} mysql_select_db($database, $connection); I know it's not a good idea to put them directly in the script that is querying the database. However, some say that you should put the connection details in a separate PHP script and include that script to connect. Is there

问题 I have a Windows Forms application. When the user imports a license for my application I'd like to "phone home" (hit an aspx page on the web) and register the license information. The problem is that the user may not have an internet connection working at that moment. I'd like to test this first. What's the best way to detect if the user has an internet connection available? 回答1: At a PPOE, at least a hundred thousand dollars was spent on this question. The main sticking points: A lot of the

问题 I'm trying to detect when a SignalR Core connection is lost so that I can create a new one or at least warn the user. connection.on('closed', data => { alert('Connection Closed'); }); This seems to have no effect. The messages stop arriving but this handler isn't fired. On a related note, where is the documentation for event handling for the new version of this library? 回答1: Use onclose : connection.onclose(function (e) { alert('Connection Closed'); } There's no documentation yet, but a

问题 I spent ages trying to find a simple example where MongoEngine was being used and a connection was being closed. Finally figured it out and posting my code. 回答1: I know this is an old question, but if anyone else is searching I figured I'd give an alternate answer. close() does not actually remove the connection from MongoEngine's connection list. This causes problems when trying to connect to a different database later on. To solve this I used mongoengine.connection.disconnect (even though

问题 I can able to see two states in Bluetooth device in Android. 1. Paired 2. Connected. - I am trying to get currently connected Bluetooth device in Android. But I am getting only paired device list from adapter.getBondedDevices(); I need currently connected device. How can i get this. Please someone help me to achieve this. Thanks in advance. 回答1: That's pretty straight forward. Android BluetoothManager have method of getConnectedDevices() Implementation like: BluetoothManager manager =

问题 I am developing a server application, which uses mysql for some data storing. Should I create a connection to the mysql on the server's start and use it for all queries, or create connection on each query? Which is better/faster? 回答1: If you ask me, It's better to use only one connection, that way you can use session variables without any issues. Besides, with static variables, it's easy to permanently save the connection somewhere in the script. 来源： https://stackoverflow.com/questions

问题 I know that on iOS 4 , the Wi-Fi connection used to be persistent, so going into sleep mode/locked kept the connection ON . This was modified in the next version iOS 5 to improve battery life. In iOS 5 , requiring the device to be plugged into a power source in order to have a persistent Wi-Fi connection. Wi-Fi connection is disconnecting automatically after iPad is going into sleep mode/locked . Here comes my problem, I'm sending a bulk chunk of data through WiFi which may take too much time