java. lang.Long cannot be cast to java. Lang. integer solution
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Java
Scenario:
Mybatis connecting to Oracle
report errors:
When the test increases, an error is reported lang.Long cannot be cast to java. lang.Integer； No error is reported after deletion.
Troubleshooting process:
1. First check the mapped SQL, print the SQL, and execute it directly on Oracle. There is no problem.
2. Observe the return result of the interface, find that the return value is defined as int, and find the problem.
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