Category: Enterprise Web Project

October 27, 2020

Be careful, when you are using CrudReporsitory.save() in JPA

in some JPA project, CrudReporsitory.save() is used this way:

repository.save(oldtEntity)

1	repository.save(oldtEntity)

sometime the oldEntity will be set with new properties, but sometimes you will find that the new assigned ID has not been set to...

Cross Domain Communication

September 2, 2018

Enabling Cross Origin Requests for a Sprint MVC RESTful Web Service

Skip the definition of CORS, I will test 4 implementations which from Spring official document. 1. Preparation: 1-1. Create a resource controller The service was deployed at domain api.novastartupclassic.com

@RestController
@RequestMapping( "/v1/authc" )
public class GreetingController {

    @GetMapping("/member/register")
    public Object register( @RequestBody Member member) {
        ......
        return Re.ok( "Registered successfully." ).callback();
    }

}

@RestController

@RequestMapping( "/v1/authc" )

public class GreetingController {

@GetMapping("/member/register")

public Object register( @RequestBody Member member) {

......

return Re.ok( "Registered successfully." ).callback();

}

1-2.

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Category: Enterprise Web Project

Be careful, when you are using CrudReporsitory.save() in JPA

Enabling Cross Origin Requests for a Sprint MVC RESTful Web Service

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