小编Cha*_*hew的帖子

• 标准案例 - 你有一个控制器(@Controller)@Scope("session").
• 例如,通常期望放入会话中的类实现,Serializable以便在服务器重新启动时可以物理存储它们
• 如果控制器实现Serializable,这意味着它所引用的所有服务(其他spring bean)也将被序列化.它们通常是代理,引用了交易管理器,实体管理器工厂等.
• 某些服务甚至控制器ApplicationContext通过实现来保持对引用的引用并不是不太可能ApplicationContextAware,因此这可以有效地意味着整个上下文被序列化.并且鉴于它拥有许多连接 - 即不能通过思想序列化的东西,它将在腐败状态下恢复.

到目前为止,我大多忽略了这些问题.最近我想到声明我所有的spring依赖项transient并readResolve()通过静态实用程序类将它们重新WebApplicationContextUtils导入,并将请求/ ServletContext保存在ThreadLocal.这很乏味,但它保证了,当反序列化对象时,它的依赖关系将与当前应用程序上下文"保持同步" .

是否有任何公认的做法,或任何序列化春季背景部分的指南.

请注意,在JSF中,托管bean(~controller)是有状态的(与基于动作的Web框架不同).所以也许我的问题更多的是JSF,而不是spring-mvc.

我正在尝试构建一个由Alexa Skills Kit触发的简单AWS Lambda函数.我正在关注亚马逊制作的关于创建技能等的教程.不幸的是,Alexa Skills Kit不是"配置触发器"窗口下拉菜单中的选项.我附上了一张可用的照片.

无论如何都要显示Alexa Skills Kit？我的帐户有问题吗？任何建议都会非常有帮助.我被困在一个真正不应该引起任何问题的地方.我有一个基本帐户,因此无法获得亚马逊的支持.

在我的项目中,我创建了一个py函数来检查和修改我的谷歌日历,如下所示:

def main(event, context):

    ck_app = check(event['calID'], event['datada'], event['dataa'])

    if not ck_app: insert(event['calID'], event['datada'], event['dataa'], event['email'])

    return {
        "isBase64Encoded": False,
        "statusCode": '200',
        "headers": {},
        "body": {'input': event,
                 'busy': ck_app,
                 'guest_email': event['email']}   
    }

当我在我的lambda上测试它时都完成了,但是当我从lambda创建一个API时:

并测试结果是:

Wed Dec 20 13:35:58 UTC 2017:由于配置错误导致执行失败:格式错误的Lambda代理响应Wed Dec 20 13:35:58 UTC 2017:方法已完成,状态:502

提前致谢

您好我正在使用ViewScoped Bean问题是,当调用它时,我得到NotSerializableException.

这是我的Managed Bean的代码:

@ManagedBean(name="demandesBean")
@ViewScoped
public class DemandesBean implements Serializable {
    private static final long serialVersionUID = 1L;

    @ManagedProperty(value="#{demandeService}")
    private DemandeService demandeService; //A Spring Service

    @ManagedProperty(value="#{loginBean}")
    private LoginBean loginBean;

    private DemandeVO newDemande;

    @PostConstruct
    public void initData() {
        newDemande = new DemandeVO();
    }

    public void doAjouterDemande(ActionListener event) {
        demandeService.createDemande(newDemande, loginBean.getUsername());
        newDemande = new DemandeVO();
    }

    public List<DemandeVO> getListDemande() {
        return demandeService.getAllDemandesByUser(loginBean.getUsername());
    }

    public DemandeService getDemandeService() {
        return demandeService;
    }

    public void setDemandeService(DemandeService demandeService) {
        this.demandeService = demandeService;
    }

    public LoginBean …

我在尝试提交表单时遇到以下异常.

javax.faces.application.ViewExpiredException: /page1.xhtml No saved view state could be found for the view identifier: /page1.xhtml
at org.apache.myfaces.lifecycle.RestoreViewExecutor.execute(RestoreViewExecutor.java:132)
at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:170)
at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.preauth.AbstractPreAuthenticatedProcessingFilter.doFilter(AbstractPreAuthenticatedProcessingFilter.java:94)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at …

我喜欢在AWS中使用lambda函数.它理想地减少了维护服务器的时间.我的问题是当使用lambda时,有上下文对象和回调函数来终止函数.是否有任何使用回调超过上下文的用例.

谁能告诉我context.succeed()的回调行为(错误,消息)

var startedAt = new Date();

var interval = setInterval(function () {
    console.log(startedAt, new Date());
}, 1000);

exports.handler = function (event, context, callback) {
    setTimeout(function () {
        console.log('returning');
        // v1:
        return callback(null);
        // v2:
        // return context.succeed();
    }, 5000);
};

我在我的父实体中有一个Set,如下所示:

Class Parent {
 @OneToMany(mappedBy = parent, cascade = CasacadeType.ALL)
 Set<Child> children;
}

Class Child {
 @Column(nullable=false)
 @ManyToOne
 Parent parent;
}

现在事件,如果我对其中一个元素的Set执行remove()操作,它实际上不会被删除.

我正在为Alexa开发一个简单的自定义技能.我已经启动并运行,并在AWS Lambda上托管处理程序.它的工作正常,除了......

在测试用户界面中,如果我输入有效的话语,例如帮助,取消,游泳,跑步(两个自定义话语),一切运作良好; 但是,如果我输入无意义的话语,例如dsfhfdsjhf,则Alexa服务始终将无意义映射到意图模式中的第一个有效意图.

在我的lambda代码中,我有一个处理未知意图的处理程序; 然而,意图永远不会被人知道.这是测试界面的工件吗？还有其他事情发生了吗？

谢谢,约翰

我正在尝试使用CLI在AWS上调用lambda:

aws lambda invoke --function-name GetErrorLambda --payload '{"body":"{\"Id\":[\"321\",\"123\"]}"}' \output.

我想知道是否有办法在cli上打印输出而不是创建文件.

提前致谢.

我们使用Cloud Formation来定义一堆Lambda函数:

AWSTemplateFormatVersion: '2010-09-09'
Transform:
- 'AWS::Serverless-2016-10-31'

Resources:
  MyLambda:
    Type: 'AWS::Serverless::Function'
    Properties:
      Handler: com.handler::MyLambda
      Runtime: java8
      CodeUri: .
      Description: Some desc
      MemorySize: 512
      Timeout: 15
      Role: !Ref LambdaRole
      FunctionName: MyLambda
      Events:
        MyLambdaEvt:
          Type: Api
          Properties:
            RestApiId: !Ref MyApiDef
            Path: /lambda/my
            Method: get

  MyApiDef:
    Type: AWS::Serverless::Api
    Properties:
      DefinitionUri: s3://a-bucket/api-gateway.yml
      StageName: prod

Outputs:
  ApiUrl:
    Description: URL of your API endpoint
    Value: !Join
      - ''
      - - https://
        - !Ref MyApiDef
        - '.execute-api.'
        - !Ref 'AWS::Region'
        - '.amazonaws.com/prod'

CodePipeline生成变更集并执行它.

通过这种方式,所有Lambda函数都已正确更新,但API Gateway端点未正确更新,我们需要s3://a-bucket/api-gateway.yml手动导入和部署YML …