Testing the Application

Use the modified startup script to launch the application service and monitor the logs. If no error messages are logged, as shown in Figure 1, the encryption plugin has been loaded successfully.

Figure 1 Program runtime log

By using tools such as Postman to invoke the application's APIs, it can be observed that the encrypted data originally retrieved from the database is returned in plaintext, as shown in Figure 2.

Figure 2 The result is displayed in plain text.