safelist

, the browser does not allow direct cross-origin access to resources. The access fails unless configured in the browser on the client. In this case, handler is usually used on the server side, that is, a bridge is established between the script and the resource to allow the script to access the handler in the site, use handler to access external resources. This is a very common practice, and the operation is very simple, because it will be used frequently, so record it here for future use! Creat

, the browser does not allow direct cross-origin access to resources. The access fails unless configured in the browser on the client. In this case, handler is usually used on the server side, that is, a bridge is established between the script and the resource to allow the script to access the handler in the site, use handler to access external resources. This is a very common practice, and the operation is very simple, because it will be used frequently, so record it here for future use! Creat

the handler in the site, use handler to access external resources. This is a very common practice, and the operation is very simple, because it will be used frequently, so record it here for future use! Create a handler in the website, create a generic handler file in Visual Studio, and copy the following code: Copy code The Code is as follows: Namespace webapplication1 { Using system; Using system. IO; Using system. net; Using system. text; Using system. Web; Using system. Collections. Generi

handler, through the handler to access external resources. This is a very common practice, but also very simple to operate, because it will be used frequently, so here to record, easy to use later! First you need to create a handler in your Web site, a new generic handler file in Visual Studio, and copy the following code: Copy Code code as follows: Namespace WebApplication1 { Using System; Using System.IO; Using System.Net; Using System.Text; Using System.Web; Using System.

safety for iproducerconsumercollectionCollection provides throttling and throttling capabilities. Concurrentbag Represents an unordered collection of thread-safe objects. Concurrentdictionary Represents a thread-safe collection of key-value pairs that can be accessed concurrently by multiple threads. Concurrentqueue Represents a thread-safe FIFO (FIFO) collection. Concurrentstack Represents a thread-safe last-in-first-o

. The following is the corresponding code. 1. synchronization is required during iteration. List Synchronizedlist( NewArraylist Synchronized(Safelist) {iterator While(I. hasnext () system. Out. Println (I. Next ());} 2. Hide the iterator. Public ClassHiddeniterator { Private FinalSet NewHashset Public Synchronized VoidAdd (integer I) {set. Add (I );} Public Synchronized VoidRemove (integer I) {set. Remove (I );} Public VoidAddtenthings () {random

): Replaces all old values of the List object with the new value List list1 = new ArrayList (); List1.add (123); List1.add (332); List1.add (2332);//list1 copy list list2 to List2 = new ArrayList () ;//Wrong way, because at this time the length of the List2 is 0List list2 = arraylist.aslist (New Object[list1.size ()]); Collections.copy (List2, List1);Synchronization control: Troubleshooting Thread-safety issues when multithreading concurrently accessing collectionsMultiple synchronizedxxx () met