102 questions
How do I implement a controller class that calls from an external application that is not Java and returns download files?You can access the following URL to open a download dialog on the caller scree...
I'm creating an app with SpringBoot, and I want to be able to send it empty without entering a date.However, if you send it empty, the type conversion from String type to Date type will be obvious, bu...
I'm creating an app with SpringBoot, and I want to be able to send it empty without entering a date.However, if you send it empty, the type conversion from String type to Date type will be obvious, bu...
There are Tomcat, which is accessed by multiple people at the same time, and web applications that run on IIS.SQL statements are dynamically assembled within the application, taking into account on-sc...
Outputs application logs before and after a specific method using Aspect.You are about to log SQL statements that were executed in JdbcTemplate.All logs except SQL statements are printed correctly.I d...
I'm working on the quantity of the shopping cart. At first, I thought I could just change the quantity to JavaScript and pass the price to the order, but when I think about it, even if I log out and l...
I am learning Spring using the Spring Tool Suite (STS).On the way, I noticed that there was a shortage of libraries, so I did the following:Add one line of implementation to build.gradeFrom Package Ex...
When I change the value to what I want to update on the edit screen and press the execution button, an error such as No value present appears, so I would like to make this improvement.I am thinking of...
The following error appears:The method getUploadFile() is undefined in the type KnpnkKnskForm.The method setOutputFileNm(String) is undefined in the type KnpnkKnskForm.In this case, do I have to defin...
I would like to validate the Date type in ExampleForm.java using @DateTimeFormat in the Spring Boot application, but when I use typeMismatch in messages.properties, the message definition is not set i...
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