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由于我的应用程序已升级到 grails 2.3.0，webflow 插件（版本 2.0.8.1）在 webflow 操作后触发 OutOfMemoryError 错误和“方法名称不得为空”。

堆栈错误：

2013-09-14 00:39:10,574 ERROR [ClosureInvokingAction] - Exception occured invoking flow action: GC overhead limit exceeded
java.lang.OutOfMemoryError: GC overhead limit exceeded
    at java.util.Arrays.copyOfRange(Arrays.java:3209)
    at java.lang.String.<init>(String.java:215)
    at java.lang.StringBuilder.toString(StringBuilder.java:430)
2013-09-14 00:39:10,575 DEBUG [SessionBindingConversationManager] - Unlocking conversation 1
2013-09-14 00:39:10,584 ERROR [[grails]] - Servlet.service() for servlet grails threw exception
java.lang.OutOfMemoryError: GC overhead limit exceeded
    at java.util.Arrays.copyOfRange(Arrays.java:3209)
    at java.lang.String.<init>(String.java:215)
    at java.lang.StringBuilder.toString(StringBuilder.java:430)
2013-09-14 00:39:10,585 DEBUG [HttpSessionSecurityContextRepository] - SecurityContext is empty or anonymous - context will not be stored in HttpSession. 
2013-09-14 00:39:10,585 DEBUG [SecurityContextPersistenceFilter] - SecurityContextHolder now cleared, as request processing completed
2013-09-14 00:39:10,585 ERROR [[default]] - Servlet.service() for servlet [default] in context with path [/UbiCloud] threw exception [org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.OutOfMemoryError: GC overhead limit exceeded] with root cause
java.lang.OutOfMemoryError: GC overhead limit exceeded
    at java.util.Arrays.copyOfRange(Arrays.java:3209)
    at java.lang.String.<init>(String.java:215)
    at java.lang.StringBuilder.toString(StringBuilder.java:430)

其次是webflow错误：

Method name must not be null. Stacktrace follows:
java.lang.IllegalArgumentException: Method name must not be null
    at grails.plugin.cache.web.ProxyAwareMixedGrailsControllerHelper.retrieveAction(ProxyAwareMixedGrailsControllerHelper.java:41)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
    at java.lang.Thread.run(Thread.java:680)

网络流状态：

billingOrder {
            on("requestPayment") {
                // set local props
                def profile = flow.profile
                def pid = profile.id
                def service = flow.service
                def orders = flow.orders
                def email = conversation.email

                // subscription dates
                def today = new Date()
                def endOfSubscription = today + 365

                // billing create
                flow.billing = new Billing(
                        orders:orders,
                        profile:profile,
                        packcode:orders?.packcode,
                        creationdate:today,
                        name:profile?.name,
                        firstname:profile?.firstname,
                        address:params?.billing?.address,
                        postalcode:params?.billing?.postalcode,
                        town:params?.billing?.town,
                        country:params?.billing?.country, // TODO: check phone locale
                        tvanumber:params?.billing?.tvanumber,
                        paymentmode:PAY_MODE,
                        currency:CUR_MODE,
                        paymentterms:params?.billing?.paymentterms,
                        termsapproved:params?.billing?.termsapproved,
                        autorenewal:true,
                        newcontact:false,
                        active:false,
                        creditcardtype:params?.billing?.creditcardtype,
                        cardno:params?.billing?.cardno.trim(),
                        ed:params?.billing?.ed,
                        cvc:params?.billing?.cvc
                        )

                // process amount terms
                def billing = flow.billing
                if (billing.paymentterms == MONTH_MODE) {
                    billing.amount = orders.amountmonth
                } else if (billing.paymentterms == YEAR_MODE) {
                    billing.amount = orders.amountyear
                } else {
                    log.error "[STORE] No payment terms defined"
                }

                // profile fields
                profile.phone=params?.profile?.phone
                profile.mobilephone=params?.profile?.mobilephone
                profile.companyname=params?.profile?.companyname
                profile.sirencode=params?.profile?.sirencode

                // update technical contact
                service.temail=params?.service?.temail


                }
                if (!billing.validate() || !profile.validate() || !orders.validate() || !service.validate()) {
                    if(!billing.creditcardtype){
                        flash.messagecc = "store.billing.cc"
                    } else if(!billing.termsapproved){
                        flash.message = "store.billing.approveterms"
                    }
                    [billing:billing,orders:orders,profile:profile,service:service,orders:orders,rpid:rpid]
                    error()

该错误来自用于验证计费对象的 grails 化学，这有时会导致溢出错误，并且无论如何“方法名称不得为空”。自从从 grails 2.2.4 迁移到 grails 2.3 以来，没有添加任何约束或字段，我想域验证对象或 webflow 过程中必须有变化。当然，计费域对象是可序列化的，而 beforeValidate() 是瞬态的。

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