spring boot 1.4默认使用 hibernate validator

spring boot 1.4默认使用 hibernate validator 5.2.4 Final实现校验功能。hibernate validator 5.2.4 Final是JSR 349 Bean Validation 1.1的具体实现。

How to disable Hibernate validation in a Spring Boot project

As [M. Deinum] mentioned in a comment on my original post, the solution is to set:

spring.jpa.properties.javax.persistence.validation.mode=none
In the application.properties file.

Additionally, this behaviour is described here (its easy to miss because no example is provided).

http://stackoverflow.com/questions/26764532/how-to-disable-hibernate-validation-in-a-spring-boot-project

一初步使用
hibernate vilidator主要使用注解的方式对bean进行校验，初步的例子如下所示：

package com.query;
import javax.validation.constraints.Min;
import org.hibernate.validator.constraints.NotBlank;
public class Student {
//在需要校验的字段上指定约束条件
 @NotBlankprivate String name;@Min(3)private int age;@NotBlankprivate String classess;public String getName() {return name;}public void setName(String name) {this.name = name;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public String getClassess() {return classess;}public void setClassess(String classess) {this.classess = classess;}}

 然后在controller中可以这样调用，加上@Validated注解即可。

 package com.controller;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import com.learn.validate.domain.Student;@RestController
public class ValidateController {@RequestMapping(value="testStudent")public void testStudent(@Validated Student student) {}
}

如果校验失败，默认会返回Spring boot 框架的出错信息。是一个json串，里面有详细的出错描述。

二使用gruops 属性来实现区别不同的校验需求
在上面的例子中，如果Student bean想要用于两个不同的请求中，每个请求有不同的校验需求，例如一个请求只需要校验name字段,一个请求需要校验name和age两个字段，那该怎么做呢？
使用注解的groups属性可以很好的解决这个问题,如下所示：

package com.query;
import javax.validation.constraints.Min;import org.hibernate.validator.constraints.NotBlank;public class Student {//使用groups属性来给分组命名，然后在需要的地方指定命令即可@NotBlank(groups=NAME.class)private String name;@Min(value=3,groups=AGE.class)private int age;@NotBlankprivate String classess;public String getName() {return name;}public void setName(String name) {this.name = name;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public String getClassess() {return classess;}public void setClassess(String classess) {this.classess = classess;}public interface NAME{};public interface AGE{};}

 根据需要在@Validated属性中指定需要校验的分组名，可以指定1到多个。指定到的分组名会全部进行校验，不指定的不校验。

 package com.controller;import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import com.learn.validate.domain.Student;
import com.learn.validate.domain.Student.AGE;
import com.learn.validate.domain.Student.NAME;@RestController
public class ValidateController {@RequestMapping(value="testStudent")public void testStudent(@Validated Student student) {}@RequestMapping(value="testStudent1")public void testStudent1(@Validated(NAME.class) Student student) {}@RequestMapping(value="testStudent2")public void testStudent2(@Validated({NAME.class,AGE.class}) Student student) {}
}

 三 使用 @ScriptAssert 注解校验复杂的业务逻辑
 如果需要校验的业务逻辑比较复杂，简单的@NotBlank，@Min注解已经无法满足需求了，这时可以使用@ScriptAssert来指定进行校验的方法，通过方法来进行复杂业务逻辑的校验，然后返回 true或false来表明是否校验成功。
例如下面的例子：

 package com.query;
import javax.validation.constraints.Min;import org.hibernate.validator.constraints.NotBlank;
import org.hibernate.validator.constraints.ScriptAssert;import com.learn.validate.domain.Student.CHECK;
//通过script 属性指定进行校验的方法，传递校验的参数，
//依然可以通过groups属性指定分组名称
@ScriptAssert(lang="javascript",script="com.learn.validate.domain
.Student.checkParams(_this.name,_this.age,_this.classes)",
groups=CHECK.class)
public class Student {@NotBlank(groups=NAME.class)private String name;@Min(value=3,groups=AGE.class)private int age;@NotBlankprivate String classess;public String getName() {return name;}public void setName(String name) {this.name = name;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public String getClassess() {return classess;}public void setClassess(String classess) {this.classess = classess;}public interface NAME{};public interface AGE{};public interface CHECK{};//注意进行校验的方法要写成静态方法，否则会出现 //TypeError: xxx is not a function 的错误public static boolean checkParams(String name,int age,String classes) {if(name!=null&&age>8&classes!=null){return true;}else{return false;}}}

在需要的地方，通过分组名称进行调用

package com.controller;import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import com.learn.validate.domain.Student;
import com.learn.validate.domain.Student.CHECK;@RestController
public class ValidateController {@RequestMapping(value="testStudent3")public void testStudent3(@Validated(CHECK.class) Student student) {}
}

原文链接：http://www.jianshu.com/p/a9b1e2f7a749

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import java.util.Set;import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
import javax.validation.constraints.Max;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;public class JavaxValidation {public static void main(String[] args) {Dog d = new Dog();d.setName("小明");d.setAge(2);ValidatorFactory vf = Validation.buildDefaultValidatorFactory();Validator validator = vf.getValidator();Set<ConstraintViolation<Dog>> set = validator.validate(d);for (ConstraintViolation<Dog> constraintViolation : set) {System.out.println(constraintViolation.getMessage());}}
}class Dog {@NotNull(message = "不能为空")private String name;@Min(value = 1, message = "最少为1")@Max(value = 20, message = "最大为20")private int age;public String getName() {return name;}public void setName(String name) {this.name = name;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}
}