Java 在使用JAX-RS时,有没有一种方法可以将变量放入自定义ConstraintValidator中?
在反序列化JSON负载时,我希望使用自定义验证器验证电话号码。此验证器需要知道客户所在的国家,才能正确解析电话号码。我可以在http头接受语言中找到的国家 问题是如何向自定义验证器提供这些额外的元数据 我确信@Context会将HttpHeaders注入PhoneNumberValidator,但这不起作用:Java 在使用JAX-RS时,有没有一种方法可以将变量放入自定义ConstraintValidator中?,java,jax-rs,bean-validation,websphere-liberty,Java,Jax Rs,Bean Validation,Websphere Liberty,在反序列化JSON负载时,我希望使用自定义验证器验证电话号码。此验证器需要知道客户所在的国家,才能正确解析电话号码。我可以在http头接受语言中找到的国家 问题是如何向自定义验证器提供这些额外的元数据 我确信@Context会将HttpHeaders注入PhoneNumberValidator,但这不起作用: @Context private HttpHeaders mHttpHeaders; 该字段为空 API终点: @Path("customer") public clas
@Context
private HttpHeaders mHttpHeaders;
该字段为空
API终点:
@Path("customer")
public class CustomerResource {
@POST
@Consumes(MediaType.APPLICATION_JSON)
public Response postCustomer(@Valid Customer pCustomer) {
return Response.ok(pCustomer).build();
}
}
POJO:
验证程序接口:
@Documented
@Retention(RUNTIME)
@Target({ TYPE, FIELD })
@Constraint(validatedBy = { PhoneNumberValidator.class })
public @interface ValidPhoneNumber {
String message() default "Phone number is not valid!";
Class<?>[] groups() default {};
Class<? extends Payload>[] payload() default {};
}
@已记录
@保留(运行时)
@目标({TYPE,FIELD})
@约束(validatedBy={PhoneNumberValidator.class})
public@interface ValidPhoneNumber{
字符串消息()默认“电话号码无效!”;
类[]组()默认值{};
类HttpHeaders
对象还不是一个CDI管理的bean——我说它还不是,因为它是雅加达JAX-RS 3.0成为CDI bean计划的一部分,但对于JAX-RS 2.1和更早版本,它不是
但是资源类可能是CDI管理的bean。因此,您可以将HttpHeaders
注入CustomerResource
类,然后提供访问头的getter方法。然后在验证程序类中使用@inject
注入资源。然后您可以从验证器
大概是这样的:
@RequestScoped
public class PhoneNumberValidator implements ConstraintValidator<ValidPhoneNumber, String> {
@Inject
CustomerResource customerResource;
@Override
public boolean isValid(String vTelephone, ConstraintValidatorContext pContext) {
// Get the country in here using the original resource instance
final String vCountry = customerResource.getHeaderString("COUNTRY");
try {
validate(vTelephone, vCountry);
} catch (Throwable t) {
System.out.printf("Error parsing {0} as a phone number in {1}: {2}", vTelephone, vCountry, t.getMessage());
return false;
}
return true;
}
...
@RequestScoped
@Path("customer")
public class CustomerResource {
@Context
private HttpHeaders headers;
@POST
@Consumes(MediaType.APPLICATION_JSON)
public Response postCustomer(@Valid Customer pCustomer) {
return Response.ok(pCustomer).build();
}
String getHeaderString(String headerName) {
return headers.getHeaderString(headerName);
}
...
我在这里写了一个工作示例,可能会有所帮助:
希望这有帮助,安迪
@RequestScoped
public class PhoneNumberValidator implements ConstraintValidator<ValidPhoneNumber, String> {
@Inject
CustomerResource customerResource;
@Override
public boolean isValid(String vTelephone, ConstraintValidatorContext pContext) {
// Get the country in here using the original resource instance
final String vCountry = customerResource.getHeaderString("COUNTRY");
try {
validate(vTelephone, vCountry);
} catch (Throwable t) {
System.out.printf("Error parsing {0} as a phone number in {1}: {2}", vTelephone, vCountry, t.getMessage());
return false;
}
return true;
}
...
@RequestScoped
@Path("customer")
public class CustomerResource {
@Context
private HttpHeaders headers;
@POST
@Consumes(MediaType.APPLICATION_JSON)
public Response postCustomer(@Valid Customer pCustomer) {
return Response.ok(pCustomer).build();
}
String getHeaderString(String headerName) {
return headers.getHeaderString(headerName);
}
...