import com.google.common.base.Preconditions;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.mmall.exception.ParamException;
import org.apache.commons.collections.MapUtils;
import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
import java.util.*;
/**
* @Author: zhouheng
* @Created: with IntelliJ IDEA.
* @Description:
* @Date: 2018-07-16
* @Time: 15:27
*/
public class BeanValidator {/**
* 构建工厂
*/private static ValidatorFactory validatorFactory = Validation.buildDefaultValidatorFactory();
/**
* 验证参数
* @param t
* @param groups
* @param
* @return
*/
public static Map validate(T t, Class... groups) {
Validator validator = BeanValidator.validatorFactory.getValidator();
Set> validateResult = validator.validate(t, groups);
if (validateResult.isEmpty()) {return Collections.emptyMap();
} else {
Iterator> iterator = validateResult.iterator();
Map errors = Maps.newLinkedHashMap();
while (iterator.hasNext()) {
ConstraintViolation validation = iterator.next();
errors.put(validation.getPropertyPath().toString(), validation.getMessage());
}
return errors;
}}/**
* 列表类型的参数
* @param collection
* @return
*/
public static Map validateList(Collection collection) {Preconditions.checkNotNull(collection);
Iterator iterator = collection.iterator();
Map errors;
do {if (!iterator.hasNext()) {
return Collections.emptyMap();
} else {
Object next = iterator.next();
errors = validate(next, new Class[0]);
}
} while (errors.isEmpty());
return errors;
}/**
* 对象类型的验证
* @param first
* @param objects
* @return
*/
public static Map validateObject(Object first, Object... objects) {
if (objects == null && objects.length > 1) {
return validateList(Lists.asList(first, objects));
} else {
return validate(first, new Class[0]);
}
}/**
* 检查参数是否符合类型
* @param param
* @throws ParamException
*/
public static void check(Object param) throws ParamException {
Map map = BeanValidator.validateObject(param);
if (MapUtils.isNotEmpty(map)) {
throw new ParamException(map.toString());
}
}}
【BeanValidator】全局验证bean的校验
推荐阅读
- Eclipse中Spring的引入
- 在idea中 使tomcat中配置的虚拟路径生效
- javaSE|javaEE JDBC, dbutils插件, 事务
- Windows平台Redis的安装和配置
- javax.inject.jar（依赖注入非常方便的jar包）
- 在Win下搭建JSP开发环境
- windows下RocketMQ安装部署
- jstl判段对象是否为空
- RequestHolder