How are spring application objects built? SpringBoot source code

Note: the source code analysis corresponds to spring boot version 2.1.0.RELEASE This connection What is the starting process of SpringBoot? Spring boot source code (7) Learn from the past Let's review the contents of the previous article. In the previous article, we analyzed the startup process of SpringBoot, and now we summarize the key steps: ...

Posted on Mon, 06 Apr 2020 04:56:42 -0700 by isam4m

Spring learning -- sql parameter injection of JDBC template

Turn around: sql parameter injection of [spring] JDBC template demo @Repository("jdbcDao") public class JdbcTemplateDao { @Autowired private JdbcTemplate jdbcTemplate; @Autowired private NamedParameterJdbcTemplate namedTemplate; private final static List<String> names = new ArrayList<String>(); priva ...

Posted on Mon, 06 Apr 2020 04:11:29 -0700 by jungalist

HTML5 game development example

Development tool: vscode 1, Character puzzle The game is introduced: the jigsaw game divides a picture into several pieces and randomly scrambles them. When all the pieces are put back in place, the puzzle is finished. In the "game", click the slider to select the game difficult and easy, "easy" is a 3-row 3-column puzzle, i ...

Posted on Mon, 06 Apr 2020 03:55:20 -0700 by harman

Python Chapter 12 - multiprocessing and multithreading 02 - multithreading

In the next chapter, what forms can exist between processes and threads? 1. Single process and single thread: a person eats vegetables on a table. 2. Single process and multithreading: many people eat together on the same table. 3. Multi process single thread: many people, each of them, eat at their own table. The problem of multithreading is t ...

Posted on Sun, 05 Apr 2020 23:07:11 -0700 by jOE :D

Talk about CanalAdapterService of canal

order This paper focuses on the CanalAdapterService of canal CanalAdapterService canal-1.1.4/client-adapter/launcher/src/main/java/com/alibaba/otter/canal/adapter/launcher/loader/CanalAdapterService.java @Component @RefreshScope public class CanalAdapterService { private static final Logger logger = LoggerFactory.getLogger(CanalAdapterSer ...

Posted on Sun, 05 Apr 2020 21:06:06 -0700 by dagee

MongoDB tutorial (17) MongoDB $type operator

Description In this chapter, we will continue to discuss the condition operator $type in MongoDB. The $type operator is based on the BSON type to retrieve the matching data types in the collection and return the results. The types that can be used in MongoDB are as follows: type number Remarks Double 1   String 2   Obje ...

Posted on Sun, 05 Apr 2020 14:31:39 -0700 by sloshire1

Internet of Things Development Docking

Internet of Things Devices Camera Card reader Gateway lpr Wait and so on Communication protocol Frame Selection Device SDK Haikang camera, vehicle identification and other equipment Dahua's camera Red Gate Gate Principle: Use JNI or JNA technology of java to invoke c driver to realize docking of device data.Distinguish deployment platforms ...

Posted on Sun, 05 Apr 2020 13:48:41 -0700 by romilbm

008. Concurrent Container Class Map

1. JDK Source Learning Method 1. Deductive deduction Example: causal inference. Because only BIO and NIO are available in JAVA, these two knowledge points can be used to explore the principles of network processing in all frameworks. 2. Inductive Summary Example: Perhaps the right guess. Of the 10 servers on-line, 3 always restart automatic ...

Posted on Sun, 05 Apr 2020 13:19:51 -0700 by strega

[SpringBoot search series] Solr identity authentication and authorization update exception solution

[search series] Solr identity authentication and authorization update exception solution In the previous introduction to solr, solr did not turn on permission verification, and all operations did not need authentication. It was mentioned at that time that if solr turned on permission verification, change solr's host and bring the user name / ...

Posted on Sun, 05 Apr 2020 10:27:11 -0700 by AnAmericanGunner

Animation: an article quickly learn fast sorting

Content introduction Introduction to quick sorting Quicksort is an improvement of bubble sort. Fast sorting was proposed by C. A. R. Hoare in 1960. Fast sorting algorithm is listed as one of the top ten algorithms in the 20th century, which shows its role and importance. Fast sorting is a sort algorithm that programmers must master. Hill sort ...

Posted on Sun, 05 Apr 2020 09:49:25 -0700 by kidd1270