错误如下：

2017-06-14 12:41:03,857 DEBUG [org.hibernate.validator.internal.metadata.descriptor.ConstraintDescriptorImpl] - Adding composing constraint: ConstraintDescriptorImpl{annotation=javax.validation.constraints.Pattern, payloads=[], hasComposingConstraints=true, isReportAsSingleInvalidConstraint=false, elementType=FIELD, definedOn=DEFINED_LOCALLY, groups=[interface javax.validation.groups.Default], attributes={flags=[Ljavax.validation.constraints.Pattern$Flag;@5c786553, groups=[Ljava.lang.Class;@313a809b, regexp=.*, message={javax.validation.constraints.Pattern.message}, payload=[Ljava.lang.Class;@22cd212b}, constraintType=GENERIC}.

2017-06-14 12:41:03,983 DEBUG [org.hibernate.validator.resourceloading.PlatformResourceBundleLocator] - org.hibernate.validator.ValidationMessages found.

因为在controller参数中用了多个ModelAttribute，并且需要验证，所以一直以为是多个ModelAttribute导致的。

后来，发现，是因为验证字段的类型与验证内容不匹配导致。如下

@NotNull(message = "是否激活不能空")
@ApiModelProperty(required = true, value = "激活")
@Pattern(regexp = "^[0-9]*[1-9][0-9]*$", message = "激活必须是数字")
private int is_active;

is_active是int类型，而@Pattern对int类型无效，所以，一只报错