Today, I used jdk1.8 for the upgrade and found that when Java called SSL, an exception was suddenly thrown.

After a while, I finally found out that there was a problem with the SSL calling authority because of the jdk1.8 version.

Solution: Find the jdk 1.8 installation directory and find a java.security under lib\security in C:\Program Files\Java\jre. Find the corresponding SSLv3, delete it, and restart the project. (Deleting SSLv3 means allowing SSL calls)