Gathering sand into a tower, making a little progress every day ? Column introduction Front-end Getting Started Tour: Exploring the Wonderful World of Web Development Welcome to the Front-End Getting Started Tour! If you are interested, you can subscribe to this column! This column is tailor-made for those who are interested in web development and […]
Tag: role
What are the uses of javascript?, the role and function of javascript
Hello everyone, the editor is here to answer the following questions for you, javascript and the role of javascript, what are the uses of javascript? Now let us take a look together! This article mainly introduces the benefits of enabling java in the browser. It has certain reference value. Friends in need can refer to […]
The role of configuration configuration class, rabbitMq code example how to customize beans
@Configuration @ConditionalOnClass(SimpleRabbitListenerContainerFactory.class) public class ConsumerConfig { @Value(“${rabbit.batch.num:100}”) private int batchNum; @Bean(“batchQueueRabbitListenerContainerFactory”) public SimpleRabbitListenerContainerFactory batchQueueRabbitListenerContainerFactory(ConnectionFactory connectionFactory) { SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory(); factory.setConnectionFactory(connectionFactory); factory.setBatchListener(true); factory.setConsumerBatchEnabled(true); factory.setBatchSize(batchNum); return factory; } } This code is a RabbitMQ message consumer configuration class based on Spring Boot. Let me explain step by step and give examples: @Configuration: This annotation indicates […]
The operating principle of javascript closure, the role of javascript closure
Hello everyone, the editor will answer your questions about how JavaScript closures operate. Many people still don’t know the role of JavaScript closures, let’s take a look now! Article directory Closure 1. What is closure? 2. Conditions for generating closure 3. Location of closure variable storage JS stack memory release 4. Common closures Closure 1: […]
The role of the child_process module in Node.js
Gathering sand into a tower, making a little progress every day ? Column introduction Front-end Getting Started Tour: Exploring the Wonderful World of Web Development Welcome to the Front-End Getting Started Tour! If you are interested, you can subscribe to this column! This column is tailor-made for those who are interested in web development and […]
What is static in Java? And the role of static
Static means “global” or “static” and is used to modify member variables and member methods. It can also form a static code block, but there is no concept of global variables in the Java language. Let’s first look at the following program private String name; private int age ; String city=”A city”; \t public Person() […]
java.security.AccessControlException: access denied (“java.net.SocketPermission“ “x.x.x.x:80“ “conn
When running the java applet, an error is reported. The console error message is as follows: java.security.AccessControlException: access denied (“java.net.SocketPermission” “x.x.x.x:80” “connect,resolve”) at java.security.AccessControlContext.checkPermission(AccessControlContext.java:472) ~[?:1.8.0_102] at java.security.AccessController.checkPermission(AccessController.java:884) ~[?:1.8.0_102] at java.lang.SecurityManager.checkPermission(SecurityManager.java:549) ~[?:1.8.0_102] at java.lang.SecurityManager.checkConnect(SecurityManager.java:1051) ~[?:1.8.0_102] at java.net.Socket.connect(Socket.java:584) ~[?:1.8.0_102] at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:74) ~[?:?] at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:141) ~[?:?] at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:353) ~[?:?] at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:380) ~[?:?] at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236) ~[?:?] at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:184) ~[?:?] […]
Context plays an important role in Android development
Context introduction In Android development, Context is a very important class, often translated as context, which represents the running environment of the current application. Context can be understood as an interface for global information. It provides methods to access application resources and system services. It is also the key to starting other components and creating […]
The essence of character device driver registration and registration and cancellation steps, and the role of the struct inode/file structure
1. The essence of character device registration and registration and cancellation steps The essence of character device driver registration As long as a certain information exists on the operating system, there must be an object describing this information in the operating system. The character device driver is registered into the kernel, and there must be […]
The role of javascript assignment operator, operators in javascript
This article mainly introduces the function of JavaScript assignment operator, which has certain reference value. Friends in need can refer to it. I hope you will gain a lot after reading this article. Let the editor take you to understand it together. JavaScript operators are: Assignment operators, arithmetic operators, string operators, logical operators, relational operators, […]