注入Validator,调用 javax.validation.Validator#validate
即可
package bj.valid; import lombok.AllArgsConstructor; import lombok.Data; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration; import org.springframework.boot.context.event.ApplicationReadyEvent; import org.springframework.context.ApplicationListener; import javax.annotation.Resource; import javax.validation.ConstraintViolation; import javax.validation.Valid; import javax.validation.Validator; import javax.validation.constraints.NotEmpty; import javax.validation.constraints.NotNull; import java.util.Collections; import java.util.List; import java.util.Set; /** * Created by BaiJiFeiLong@gmail.com at 2018/12/13 下午2:49 */ @SpringBootApplication(exclude = DataSourceAutoConfiguration.class) public class ValidApp implements ApplicationListener<ApplicationReadyEvent> { @Data @AllArgsConstructor static class User { private int id; @NotEmpty private String username; @Valid private List<Bankcard> bankcards; } @Data @AllArgsConstructor private static class Bankcard { private int id; @NotEmpty private String name; } @Resource private Validator validator; public static void main(String[] args) { SpringApplication.run(ValidApp.class, args); } @Override public void onApplicationEvent(@NotNull ApplicationReadyEvent event) { Set<ConstraintViolation<User>> violations = validator.validate(new User(1, "", Collections.singletonList(new Bankcard(1, "")))); System.out.println(violations.size()); violations.forEach(System.out::println); } }
. ____ _ __ _ _ /// / ___'_ __ _ _(_)_ __ __ _ / / / / ( ( )/___ | '_ | '_| | '_ // _` | / / / / /// ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_/__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.1.0.RELEASE) 2018-12-13 15:06:08.153 INFO 555 --- [ main] bj.valid.ValidApp : Starting ValidApp on MacBook-Air-2.local with PID 555 (/Users/yuchao/temp/java/hellomaven/target/classes started by yuchao in /Users/yuchao/temp/java/hellomaven) 2018-12-13 15:06:08.161 INFO 555 --- [ main] bj.valid.ValidApp : No active profile set, falling back to default profiles: default 2018-12-13 15:06:09.826 INFO 555 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode! 2018-12-13 15:06:09.835 INFO 555 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode. 2018-12-13 15:06:09.909 INFO 555 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 34ms. Found 0 repository interfaces. 2018-12-13 15:06:11.584 INFO 555 --- [ main] bj.valid.ValidApp : Started ValidApp in 4.916 seconds (JVM running for 7.047) 2 ConstraintViolationImpl{interpolatedMessage='不能为空', propertyPath=bankcards[0].name, rootBeanClass=class bj.valid.ValidApp$User, messageTemplate='{javax.validation.constraints.NotEmpty.message}'} ConstraintViolationImpl{interpolatedMessage='不能为空', propertyPath=username, rootBeanClass=class bj.valid.ValidApp$User, messageTemplate='{javax.validation.constraints.NotEmpty.message}'}