Programmer Think

1. Introduction of Snack3 and JSONPath Snack3 is a JSON framework that supports JSONPath.JSONPath is a powerful feature that can also be used as an Object Query Language (OQL) in the Java framework. <dependency> <groupId>org.noear</groupId> <artifactId>snack3</artifactId> <version>3.1.5.10</version&g ...

  Use: file download in Java Web Environment Front end page code: <a class="formControls col-sm-5" id="view_filePath" ></a> jquery code (data is the data obtained from the background by making ajax request) $('#view_filePath').html(data.filePath); $('#view_filePath').attr('href','/ctl-web/file/downFile?filePath ...

I. Introduction of related packages and dependencies I use the method of slf4j+log4j to introduce pom files. There is another method of Commons logging + log4j. I will not talk about it here. You can refer to the materials you need. <!--slf4j+log4j--> <dependency> <groupId>org.slf4j</groupId> &lt ...

I. system environment Centos7 Two, installation   $ yum install -y firewalld III. basic startup command   $ systemctl status firewalld # View state $ systemctl start firewalld # start-up $ systemctl stop firewalld #Close $ systemctl enable firewalld ...

Welcome to read and communicate with us. Please leave a message if you have any questions. There are also open sources on GitHub JavaHouse Welcome to star 1 Introduction In Java8, ThreadLocal is a generic class.This class can provide thread variables.Each thread has its own variables.What does this mean?Every thread has its own resources, just ...

Netty is just a simple understanding. Please correct any mistakes. Why do you have a heartbeat If a connection is not used for a long time, it will be closed to reduce the connection pressure of the server. Because the server needs to keep the connection information of the client, the client is likely to have various conditions, such as for ...

Since I haven't learned any other programming languages, as my first programming "native language", I won't give examples of other programming languages here. JavaScript, as a variable of dynamic type scripting language, has no type, so how can we convert its variables? And forced conversion. JavaScript variables really have no type. ...

Unit test (1): spring boot establishes unit test Unit test (2) - Junit4+EasyMock build unit test Unit test (3) - establish multithreaded unit test Add dependency pom.xml <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> &lt ...

Communication model (a -- > B -- > A): a sends data to B through UDP (a can be a specified destination, or a broadcast message to b). B sends back a message to a according to the source address and port after receiving the message, which is such a simple communication process. For the explanation of golang udp, please refer to the followi ...

The ordered or unordered list in documents is a way to reflect the hierarchical relationship or the same property of the content. Compared with the simple text description, it can effectively enhance the organization of the document content and highlight the key points. Therefore, this article will share methods for setting up ordered or unorde ...