exception

问题 This question already has answers here : How to use the pass statement? (15 answers) Closed 5 years ago . I have not seen the keyword pass used much in Python, except for the occasional exception, such as in here: Why is "except: pass" a bad programming practice? Are there any other example use-cases of pass which are acceptable/okay programming practice? 回答1: One use is to define a "stub" class or method that has a name but doesn't do anything. Maybe the most common case of this is to define

问题 This question already has answers here : How do I create a custom Error in JavaScript? (20 answers) Closed 5 years ago . if (win.NS && win.NS.molist && win.NS.molist.utility) { NS = win.NS; NS.molist.dom = true; } else { throw "dom requires utility module"; } For the snippet above, what is the proper way to throw an error, if win.NS.molist.utility does not exist? Can I just throw up the text I want displayed to be shown in the debugger? Perhaps, I should use one of the built in error types?

问题 This question already has answers here : How to use the pass statement? (15 answers) Closed 5 years ago . I have not seen the keyword pass used much in Python, except for the occasional exception, such as in here: Why is "except: pass" a bad programming practice? Are there any other example use-cases of pass which are acceptable/okay programming practice? 回答1: One use is to define a "stub" class or method that has a name but doesn't do anything. Maybe the most common case of this is to define

问题 I tried to do a simple AJAX request on http://localhost:8080/ and I get an error right away when using IE 11. I don't think IE is even trying to send anything. Did somebody meet this issue? Here is a fiddle showing this behavior, html: <button id='btn1'>launch</button> onLoad: var xhr,btn=document.getElementById('btn1'); btn.onclick=onButton; var onReadyState=function(){ console.log('ready state:'+_xhr.readyState); if(xhr.readyState===4){ console.log('status:'+_xhr.status); } } function

问题 I'm trying to request the response from server, but when I use "HttpResponse response = client.execute(request);", program enters the exception case. Here is my code: function for getting response from server public String executeHttpGet(String username, String password) throws Exception { BufferedReader in = null; try { HttpClient client = new DefaultHttpClient(); HttpGet request = new HttpGet(); request.setURI(new URI("http://emapzoom.com/setting/device_login"+ "?device_id=" +password+ "

问题 I'm having weird issues while using Guzzle When I try to simulate an erroneous request (e.g. a request which returns a status code 404) Guzzle throws a ClientException containing all the details of why that request failed. When I try to catch this exception my script exits with a fatal error stating that I didn't catch the exception and it shows an XDebug trace stating that I had a memory leak somehow. My code looks like this: Note: httpClient is a valid instance of GuzzleHttp/CLient.

问题 I want to use Oauth2 and Spring-security with rest web service. I am new for this, i am trying to create configuration with the help of some websites. Still, i clearly not understand how and what is the flow for oauth authenticate for rest service. i am using latest dependencies Click on the link for see my configurations. I am using database for store clients information and tokens. when i trying to access the token, using follwoing url with post request and post body: http://localhost:8080

问题 I have java code and i'm trying to parse it and store it as XML file on my PC using JAXB but i have a marshaling exception: Exception in thread "main" javax.xml.bind.MarshalException - with linked exception: [com.sun.istack.internal.SAXException2: unable to marshal type "java.lang.String" as an element because it is missing an @XmlRootElement annotation] at com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:311) at com.sun.xml.internal.bind.v2.runtime.MarshallerImpl

问题 I have a client that needs to repeatedly poll to see if the expected server is there, and gracefully deal with the fact that it might not be for extended periods of time. Behold the following test script: import socket, time s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(0.1) delay = 2 connected = False while not connected: try: s.connect(("localhost", 50000)) # I'm running my test server locally connected = True except socket.timeout: print("Timed out. Waiting " + str

问题 I trying to run this code: listener = new TcpListener(IPAddress.Any,port: 80); listener.Start(); socket = listener.AcceptSocket(); but it throws the following exception: An attempt was made to access a socket in a way forbidden by its access permissions What may be the reason? 回答1: It might be forbidden to use a port below 1024 if you are not Administrator. Try a port like 8080 instead. see also Which port can i use for my socket? 来源： https://stackoverflow.com/questions/23593077/socket