Question

您好我正在尝试使用其中的对象列表验证对象。 Root实例来自JSON客户端文件。

我创造了类似这样的东西

@Validateable
class Book {
    String title
    List authors
    static hasMany = [authors : Authors]

    static constraints = {
        authors(nullable:false,validator: { recipients ->
            recipients.every { it.validate() }
        } )     
    }
}

@Validateable
class Author {
    String name
    Integer property

        static constraints = {
        name(nullable:false)    
        property((nullable:false, blank: false))    
    }
}

我正试图以这种方式在控制器中验证它：

class BookController {

def manageBook(Book book){
    if (book.validate()) {
        //Do my stuff
    }else{
        // return error
    }
}
}

但它根本不起作用，我在控制台中看到了这个错误：

| Error 2012-05-25 11:26:34,014 [http-bio-8080-exec-1] ERROR errors.GrailsExceptionResolver  - MissingMethodException occurred when processing request: [POST] /BookApp/rest/bookApp/manageBook
No signature of method: org.codehaus.groovy.grails.web.json.JSONObject.validate() is applicable for argument types: () values: []
Possible solutions: wait(), values(). Stacktrace follows:
Message: No signature of method: org.codehaus.groovy.grails.web.json.JSONObject.validate() is applicable for argument types: () values: []
Possible solutions: wait(), values()
   Line | Method
->>  17 | doCall  in dataskaterserver.DeviceSeenWifiData$__clinit__closure1_closure2_closure3
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   886 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
|   908 | run . . in     ''
^   680 | run     in java.lang.Thread

有人可以帮帮我吗？

Answer 1

我找到了解决方案，它在文档上...... http://grails.org/doc/latest/guide/validation.html#validationNonDomainAndCommandObjectClasses

注册可验证的类如果某个类未标记为Validateable，则该框架仍可使其可验证。执行此操作所需的步骤是在类中定义静态约束属性（如上所述），然后通过为Config.groovy @中的grails.validateable.classes属性赋值来告诉框架该类：

grails.validateable.classes = [com.mycompany.myapp.User, com.mycompany.dto.Account]

对象列表验证

1 个答案: