Java后端校验框架oval与hibernatevalidator的使用

落日映苍穹つ 2022-01-29 10:43 332阅读 0赞

1 oval  
1)Oval 官方地址： [http://oval.sourceforge.net/][http_oval.sourceforge.net]

2)依赖

3)常用注解  
字符类型  
@AsserURL、@Email、@Length、@MaxLength、@MinLength  
@NotNull、@NotBlank、@NotEmpty、  
@Digits、@HasSubstring  
数值类型  
@Range、@Max、@Min、@NotNegative  
布尔类型  
@AssertFalse、@AssertTrue  
集合数组  
@Size、@MaxSize、@MinSize、@MemberOf、@NotMemberOf  
表达式或自定义  
@Assert、@CheckWith、@NotMatchPatternCheck，@MatchPatternCheck、@ValidateWithMethod

4)使用

import net.sf.oval.ConstraintViolation;
    import net.sf.oval.Validator;
    import net.sf.oval.constraint.Length;
    import net.sf.oval.constraint.Max;
    import net.sf.oval.constraint.Min;
    
    import java.util.List;
    
    public class OvalTest {
        public static void main(String[] args) {
            Person p = new Person("test",1);
            Validator validator = new Validator();
            List<ConstraintViolation> validate = validator.validate(p);
            for (ConstraintViolation constraintViolation : validate) {
                System.out.println(constraintViolation.getMessage());
            }
        }
    }
    
    class Person{
        @Length(min = 6, max = 10)
        private String name;
        @Min(4)
        @Max(10)
        private Integer age;
    
        public Person(String name,Integer age){
            this.name = name;
            this.age = age;
        }
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public Integer getAge() {
            return age;
        }
    
        public void setAge(Integer age) {
            this.age = age;
        }
    }

2 Hibernate-validator  
1)依赖

<dependency>
          <groupId>org.hibernate</groupId>
          <artifactId>hibernate-validator</artifactId>
          <version>4.3.1.Final</version>
        </dependency>

2)常用注解  
@Null–被注释的元素必须是null  
@NotNull–被注释的元素必须不为null  
@AssertTrue–被注释的元素必须为true  
@AssetFalse–被注释的元素必须为false  
@Min(value)–被注释的元素必须为数字,且值大于等于指定的值  
@Max(value)–被注释的元素必须为数字,且值小于等于指定的值  
@DecimalMin(value)–被注释的元素必须为数字,且值大于等于指定的值  
@DecimalMin(value)–被注释的元素必须为数字,且值小于等于指定的值  
@Size(max,min)–被注释的元素的大小必须在指定的范围内  
@Digits(integer,frcation)–被注释的元素必须是数字,其值必须在可接受的范围内  
@Past–被注释的元素必须是一个过去的日期  
@Future–被注释的元素必须是一个将来的日期  
@Pattern(value)–被注释的元素必须符合正则表达式

3)使用

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;
    import java.util.Set;
    public class ValidationApiTest {
        public static void main(String[] args) {
            Person p = new Person("test",1);
            ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
            Validator validator = factory.getValidator();
            Set<ConstraintViolation<Person>> validate = validator.validate(p);
            for (ConstraintViolation constraintViolation : validate) {
                System.out.println(constraintViolation.getMessage());
            }
        }
    }
    
    class Person{
        @NotNull
        private String name;
        @Min(4)
        @Max(10)
        private Integer age;
    
        public Person(String name,Integer age){
            this.name = name;
            this.age = age;
        }
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public Integer getAge() {
            return age;
        }
    
        public void setAge(Integer age) {
            this.age = age;
        }
    }

配合SpringMVC使用  
mvc:annotation-driven/会默认装配好一个LocalValidatorFactoryBean,通过在处理方法的入参上标注@Valid注解既可让Spring MVC在完成数据绑定后执行数据校验的工作

public class User {   
          @Pattern(regexp="w{4,30}")
          private String userName;
    	
          @Length(min=2,max=100)
          private String realName;
    	
         @Past 
         @DateTimeFormat(pattern="yyyy-MM-dd")
         private Date birthday;
    	
        @DecimalMin(value="1000.00")
        @DecimalMax(value="100000.00") 
        @NumberFormat(pattern="#,###.##")
        private long salary;
    }
    
    @Controller
    public class UserController {
         @RequestMapping(value = "/handle91")
         public String handle91(@Valid  User user,BindingResult bindingResult){		
              if(bindingResult.hasErrors()){
                   return "/user/register3";
              }else{
                   return "/user/showUser";
              }
        }

4)自定义注解参见:[https://www.cnblogs.com/softidea/p/9712571.html][https_www.cnblogs.com_softidea_p_9712571.html]

[http_oval.sourceforge.net]: http://oval.sourceforge.net/
[https_www.cnblogs.com_softidea_p_9712571.html]: https://www.cnblogs.com/softidea/p/9712571.html