65.2. Cryostat 유효성 검사를 사용하여 서비스 개발

import javax.validation.constraints.NotNull;
import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;
...
@POST
@Path("/books")
public Response addBook(
        @NotNull @Pattern(regexp = "\\d+") @FormParam("id") String id,
        @NotNull @Size(min = 1, max = 50) @FormParam("name") String name) {
    // do some work
    return Response.created().build();
}

import javax.validation.constraints.NotNull;
import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;
...
@POST
@Path("/books")
public Response addBook(
        @NotNull @Pattern(regexp = "\\d+") @FormParam("id") String id,
        @NotNull @Size(min = 1, max = 50) @FormParam("name") String name) {
    // do some work
    return Response.created().build();
}

import javax.validation.Valid;
...
@POST
@Path("/books")
public Response addBook( @Valid Book book ) {
    // do some work
    return Response.created().build();
}

import javax.validation.Valid;
...
@POST
@Path("/books")
public Response addBook( @Valid Book book ) {
    // do some work
    return Response.created().build();
}

import javax.validation.constraints.NotNull;
import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;
...
public class Book {
    @NotNull @Pattern(regexp = "\\d+") private String id;
    @NotNull @Size(min = 1, max = 50) private String name;

    // ...
}

import javax.validation.constraints.NotNull;
import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;
...
public class Book {
    @NotNull @Pattern(regexp = "\\d+") private String id;
    @NotNull @Size(min = 1, max = 50) private String name;

    // ...
}

import javax.validation.constraints.NotNull;
import javax.validation.Valid;
...
@GET
@Path("/books/{bookId}")
@Override
@NotNull @Valid
public Book getBook(@PathParam("bookId") String id) {
    return new Book( id );
}

import javax.validation.constraints.NotNull;
import javax.validation.Valid;
...
@GET
@Path("/books/{bookId}")
@Override
@NotNull @Valid
public Book getBook(@PathParam("bookId") String id) {
    return new Book( id );
}

import javax.validation.constraints.NotNull;
import javax.validation.Valid;
import javax.ws.rs.core.Response;
...
@GET
@Path("/books/{bookId}")
@Valid @NotNull
public Response getBookResponse(@PathParam("bookId") String id) {
    return Response.ok( new Book( id ) ).build();
}

import javax.validation.constraints.NotNull;
import javax.validation.Valid;
import javax.ws.rs.core.Response;
...
@GET
@Path("/books/{bookId}")
@Valid @NotNull
public Response getBookResponse(@PathParam("bookId") String id) {
    return Response.ok( new Book( id ) ).build();
}