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This article introduces the relevant knowledge of "what are the functions and characteristics of xml files in web projects?" in the operation of actual cases, many people will encounter such a dilemma, and then let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Scenario: today I plan to configure a scheduled task in the project, but I didn't execute the task after startup, so I forgot the build project, that is to say, the line of code changed in the xml file that I configured earlier did not take effect. Then the build is re-performed at the start of the project, and the project automatically reloads the xml and performs scheduled tasks.

Principle analysis: after the start of the project, the corresponding classes that need to be executed will re-read the resources of the xml file when they are executed. Different from java files, java files are compiled and preloaded before startup, and if they change after startup, they need to be recompiled and loaded, while xml does not need to be recompiled and loaded directly to read the changed information.

Summary: some of the information that needs to be changed at the start of the project, do not write in the java file, but read the xml file and modify the information directly in xml, which can greatly improve the loading efficiency of the system.

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