依赖
<dependency> <groupId>javax.validation</groupId> <artifactId>validation-api</artifactId> <version>2.0.1.Final</version> </dependency> <dependency> <groupId>javax.el</groupId> <artifactId>javax.el-api</artifactId> <version>3.0.0</version> </dependency> <dependency> <groupId>org.glassfish.web</groupId> <artifactId>javax.el</artifactId> <version>2.2.6</version> </dependency> <dependency> <groupId>org.hibernate.validator</groupId> <artifactId>hibernate-validator</artifactId> <version>6.0.11.Final</version> </dependency>
验证器相关类
/**
* 验证器接口
*/
public interface Validator {
/**
* POJO实体验证
* @param entity
* @param <T>
* @return
*/
<T> List<ValidateResult> validateEntity(T entity);
/**
* 方法参数验证
* @param obj
* @param method
* @param params
* @param <T>
* @return
*/
<T> List<ValidateResult> validateMethodParams(T obj, Method method, Object[] params);
}
/**
* 默认验证.javax.validation
*/
public class DefaultValidator implements Validator {
private final ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
private final ExecutableValidator executableValidator = factory.getValidator().forExecutables();
private final javax.validation.Validator validator = factory.getValidator();
@Override
public <T> List<ValidateResult> validateEntity(T entity) {
Set<ConstraintViolation<T>> violationSet = validator.validate(entity);
return convert(violationSet);
}
@Override
public <T> List<ValidateResult> validateMethodParams(T obj, Method method, Object[] params) {
Set<ConstraintViolation<T>> violationSet = executableValidator.validateParameters(obj, method, params);
return convert(violationSet);
}
protected <T> List<ValidateResult> convert(Set<ConstraintViolation<T>> violationSet){
if (violationSet == null || violationSet.isEmpty())
return null;
List<ValidateResult> resultList = new ArrayList<>(violationSet.size());
for (ConstraintViolation cv : violationSet){
String name = cv.getPropertyPath().toString();
resultList.add(new ValidateResult(name, cv.getMessage(), cv.getInvalidValue()));
}
return resultList;
}
}
/**
* 验证的结果
*/
public class ValidateResult {
/**
* 验证的字段名称
*/
private String name;
/**
* 提示信息
*/
private String msg;
/**
* 验证的值
*/
private Object validatedVal;
public ValidateResult(String name, String msg, Object validatedVal) {
this.name = name;
this.msg = msg;
this.validatedVal = validatedVal;
}
@Override
public String toString() {
return "ValidateResult{" +
"name='" + name + '\'' +
", msg='" + msg + '\'' +
", validatedVal=" + validatedVal +
'}';
}
}
自定义验证器
import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
import static java.lang.annotation.ElementType.CONSTRUCTOR;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.ElementType.TYPE_USE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Documented;
import java.lang.annotation.Repeatable;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import javax.validation.Constraint;
import javax.validation.Payload;
/**
* 自定义×××号码验证注解
*/
@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER, TYPE_USE })
@Retention(RUNTIME)
@Repeatable(IDCardNumber.List.class)
@Documented
@Constraint(validatedBy = {IDCardNumberValidator.class})
public @interface IDCardNumber {
String message() default "invalid IDCardNumber";
Class<?>[] groups() default { };
Class<? extends Payload>[] payload() default { };
@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER, TYPE_USE })
@Retention(RUNTIME)
@Documented
@interface List {
IDCardNumber[] value();
}
}
/**
* IDCardNumber验证器
*/
public class IDCardNumberValidator implements ConstraintValidator<IDCardNumber, String> {
@Override
public void initialize(IDCardNumber constraintAnnotation) {
}
@Override
public boolean isValid(String value, ConstraintValidatorContext context) {
if (null == value || "".equals(value))
return false;
if (value.length() != 18)
return false;
if (getValidateCode(value) != value.toUpperCase().charAt(17))
return false;
return true;
}
/**
* 十七位数字本体码权重
*/
private static final int[] weight = {7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2};
/**
* mod11,对应校验码字符值
*/
private static final char[] validate = {'1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'};
public char getValidateCode(String id17) {
int sum = 0;
int mode = 0;
for (int i = 0; i < 17; i++) {
//sum = sum + Integer.parseInt(String.valueOf(id17.charAt(i))) * weight[i];
sum = sum + (id17.charAt(i) - 48) * weight[i];
}
mode = sum % 11;
return validate[mode];
}
}
测试
@Valid
public class User {
@NotNull(message = "id不能为空")
private Integer id;
private String name;
@NotNull(message = "邮箱不能为空")
@Email(message = "不合法的邮箱")
private String email;
@IDCardNumber(message = "无效×××")
private String IDCardNumber;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getIDCardNumber() {
return IDCardNumber;
}
public void setIDCardNumber(String IDCardNumber) {
this.IDCardNumber = IDCardNumber;
}
public void setField(@NotNull(message = "姓名不能为空") String name, @Range(min = 18, max = 60, message = "年龄只能在18至69岁") int age){}
}
public class Test {
public static void main(String[] args) throws NoSuchMethodException {
DefaultValidator defaultValidator = new DefaultValidator();
User user = new User();
user.setEmail("23424");
user.setIDCardNumber("23424");
List<ValidateResult> resultList = defaultValidator.validateEntity(user);
System.out.println(resultList.toString());
List<ValidateResult> validateResults = defaultValidator.validateMethodParams(user, user.getClass().getMethod("setField", String.class, int.class), new Object[]{null, 10});
System.out.println(validateResults.toString());
}
}
输出结果
[ValidateResult{name='id', msg='id不能为空', validatedVal=null},
ValidateResult{name='IDCardNumber', msg='无效×××', validatedVal=23424},
ValidateResult{name='email', msg='不合法的邮箱', validatedVal=23424}]
[ValidateResult{name='setField.arg1', msg='年龄只能在18至69岁', validatedVal=10},
ValidateResult{name='setField.arg0', msg='姓名不能为空', validatedVal=null}]
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