2

这个错误的奇怪部分是页面有时会生成错误，有时不会。我不知道是什么原因造成的或为什么：

errors.GrailsExceptionResolver ClassCastException occurred when processing request: [GET] /birthFamily/aboutYouLifestyle
java.util.LinkedHashMap cannot be cast to groovy.lang.Closure. Stacktrace follows:
java.lang.ClassCastException: java.util.LinkedHashMap cannot be cast to groovy.lang.Closure
    at com.nrfa.LifestyleCommand$__clinit__closure1.doCall(Wizard.groovy:302)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:724)

有问题的命令对象：

@Validateable
public  class LifestyleCommand {
    Integer applicantNumber;
    Smoke smoke
    Drink drink
    Occupation occupation
    Set <String> hobby
    String occupationDetails

    static constraints = {
        importFrom Applicant, include:["smoke", "drink", "occupation", "occupationDetails", "applicantNumber"]
    }
}

堆栈跟踪中的第 302 行是命令对象约束中的“importFromApplicant”行。'java.util.LinkedHashMap cannot be cast to groovy.lang.Closure' 表示什么？

当我将约束替换为在申请人域中找到的约束的副本时，它也可以正常工作：

static constraints = {

    applicantNumber (blank:false, nullable:false, range:1..2)
    smoke (blank:true, nullable:true)
    drink (blank:true, nullable:true)
    occupation (blank:true, nullable:true)
    occupationDetails (blank:true, nullable:true, maxSize:150)
}

编辑：

这是申请人的相关部分，它是一个域对象：

class Applicant {

    static hasMany = [hobby:Hobby, ethnicity:Ethnicity]

    Integer applicantNumber
    String gender
    Integer yearBorn
    EyeColor eyeColor
    HairColor hairColor
    Integer heightFeet
    Integer heightInches

    static constraints = {
        applicantNumber (blank:false, nullable:false, range:1..2)
        gender (blank:true, nullable:true, validator: { value ->
            if (value != null && value != '' && (value != "M" && value != "F")) {
                return 'applicant.invalid.gender'
            }
        })
        yearBorn (blank:true, nullable:true, validator: { value ->
            if (value != null && (value < 1920 || value > 2014)) {
                return 'applicant.invalid.yearBorn'
            }
        })
        eyeColor (blank:true, nullable:true)
        hairColor (blank:true, nullable:true)
        smoke (blank:true, nullable:true)
        drink (blank:true, nullable:true)
        heightFeet (blank:true, nullable:true, validator: { value ->
            if (value != null && (value < 3 || value > 7)) {
                return 'applicant.invalid.heightFeet'
            }
        })
        heightInches (blank:true, nullable:true, validator: { value ->
            if (value != null && (value < 1 || value > 12)) {
                return 'applicant.invalid.heightInches'
            }
        })
    }
}

向导是我的控制器。有一个操作来处​​理表单请求，该请求提交要填充到 LifestyleCommand 对象中的数据。我只是在没有填写任何字段的情况下提交页面，所以所有内容都是有效的空/空。

我正在运行 grails 2.2.4

4

1 回答 1

2

正如评论中指出的那样，您可能应该从约束块中删除occupation和删除（在 中没有该字段的约束）。occupationDetailsincludeLifestyleCommandApplicant

于 2013-09-17T07:11:05.843 回答