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Apache-2.0

#2017年6月16日

#halo.validate

@Validate(rules = { 
        @Rule(value = "required:true", message = "用户名不能为空"), 
        @Rule(value = "checkUsernameExists:", message = "用户名不能重复"), 
        @Rule(value = "maxlength:10", message = "输入长度最多是 10 的字符串(汉字算一个字符)。"), 
        @Rule(value = "minlength:5", message = "输入长度最小是 5 的字符串(汉字算一个字符)。")
})
private String username;

@Validate(rules = { @Rule(value = "required:true", message = "密码不能为空") })
private String password;

public static void main(String[] args) {
    User user = new User();
    user.setUsername("admin");
    IValidateService validate = new BaseValidateService();
    validate.validate(user);
}

jquery.Validate 形式的验证方式 继承Validation 实现验证 配置ValidationRegister 注解

#例子:

###校验器 @ValidationRegister("checkUsernameExists") public class UsernameValidation implements Validation {

    @Override
    public Boolean validate(Object attrValue, Class<?> attrType, Object params) {
        if (attrValue.equals("admin")) { return true; }
        return false;
    }
}

###配置 加入validate 配置(halo.validate.yaml 默认放于/src/main/resources): message 提示信息, packagesToScan是扫描注册的验证类

validate:
	packagesToScan: com.dasuanzhuang.halo.test	
    message:
      required: 不能为空
      maxlength: 长度不能超过{0}
      minlength: 长度不能小于{0}	

###应用:

@Validate(rules = { 
        @Rule(value = "required:true", message = "用户名不能为空"), 
        @Rule(value = "checkUsernameExists:", message = "用户名不能重复")
})
private String username;

###验证 public static void main(String[] args) { User user = new User(); user.setUsername("admin"); IValidateService validate = new BaseValidateService(); validate.validate(user); }

###出错提示: Exception in thread "main" com.dasuanzhuang.halo.validate.error.ValidateException: [User.username(java.lang.String)] at com.dasuanzhuang.halo.validate.BaseValidateService.validate(BaseValidateService.java:115) at com.dasuanzhuang.halo.test.Test.main(Test.java:45) Caused by: com.dasuanzhuang.halo.validate.error.ValidateException: [rule:{checkUsernameExists:},message:用户名不能重复] at com.dasuanzhuang.halo.validate.BaseValidateService.parseRuleAndValidate(BaseValidateService.java:60) at com.dasuanzhuang.halo.validate.BaseValidateService.validate(BaseValidateService.java:83) ... 1 more

以上是halo.validate的全部配置,配置packagesToScan标签可以扫描ValidationRegister注解的类

#@Validate 验证注解: 可以注释到属性上 ,验证的时候会获取这个注解 rules,规则列表,可以存在多个验证规则 objClass:如果对象内存在验证对象,可以添加objClass = Role.class 标识当前对象需要验证,如果不加,只验证规则验证

#@Rule 是验证规则: 你可以在value中填写验证规则如: required:true ,必须以:分割 左边代表校验器标识,右边标识传递的参数,没有参数可以为空,多余一个值用[1,2,3]类似数组的表现形式:验证注解中可以存在多个规则。

#校验器标识

系统默认的校验器包括required,maxlength,minlength,也可以自定义校验器,以下校验器标识为checkUsernameExists

@ValidationRegister("checkUsernameExists")
public class UsernameValidation implements Validation {

    @Override
    public Boolean validate(Object attrValue, Class<?> attrType, Object params) {
        if (attrValue.equals("admin")) { return true; }
        return false;
    }
}

#自定义校验器:

继承Validation 并且 需要配置注解ValidationRegister,实现validate(Object attrValue, Class<?> attrType, Object params) 方法,attrValue 传入属性值,attrType属性类型,params 冒号后面的参数,如果是多个值,以String[] 形式传递

required,maxlength,minlength 使用说明:
required:true  对象不为空,如果是String类,默认会验证是否为空字符串
maxlength:10   表示长度不能超过10
minlength:10   表示长度最小不能小于10

#支持内部对象验证

@Validate(
        rules = {
                @Rule(value = "required:true", message = "角色不能为空")
        },
        objClass  = Role.class
)
private Role role ;

@Validate(
        rules = {
                @Rule(value = "required:true", message = "角色list不能为空")
        },
        objClass  = Role.class
)
private List<Role> roles ; 

@Validate(
        rules = {
                @Rule(value = "required:true", message = "角色map不能为空")
        },
        objClass  = Role.class
)
private Map<String,Role> roleMap;

role是嵌套对象,在@Validate 中指定objClass = Role.class,就可以完成嵌套对象验证

 @Validate(rules = { 
        @Rule(value = "required:true", message = "用户名不能为空"), 
        @Rule(value = "checkUsernameExists:", message = "用户名不能重复"), 
        @Rule(value = "maxlength:10", message = "输入长度最多是 10 的字符串(汉字算一个字符)。"), 
        @Rule(value = "minlength:5", message = "输入长度最小是 5 的字符串(汉字算一个字符)。")
}, objClass  = Role.class)

#与spring 集成 ValidationBuilder.createValidation 根据名字返回Validation对象 ,建议重新定义ValidationBuilder.createValidation方法

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