Start the project and report an error;

1. First, check the code and check the GIT submission record. It is found that the code with error prompt is old code. If there is no change in the near future, the error report caused by colleague code error will be ruled out. The focus is on the local system and system configuration;

2. Check the error information

The key is these two sentences,

nested exception is java.lang.IllegalArgumentException: Property ‘sqlSessionFactory’ or ‘sqlSessionTemplate’ are required

The web application [ROOT] appears to have started a thread named [RxIoScheduler-1 (Evictor)] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:

3. Throw it to Baidu, check the solutions, and find that there are many solutions. Some solutions try, but they are invalid, while others are inconsistent with the system, and finally give up looking for solutions online;

4. Restart idea and clear the cache; Restart the computer is invalid; It is invalid to modify the JDK configuration;

5. When checking the Maven configuration, it is found that two update packages are not downloaded successfully. Add the jar package to the local, re import, restart the project, and start successfully;

The mountains and rivers are heavy, and there is no way out