fastJson解析报错com.alibaba.fastjson.JSONException: create instance error...
今天用fastJson解析报 create instance error的错误 认真检查,bean类内的字段都和服务端返回的字段一致,格式都是正确的,为什么会报错呢。 在网上找到答案,如果存在内嵌的情况: 比如public class A{ private Stri...
【小错误】ORA-00265: instance recovery required, cannot set ARCHIVELOG mode
1.错误描述:今天在起归档的时候报一下错误:SQL> alter database archivelog;alter database archivelog*ERROR at line 1:ORA-00265: instance recovery required, cannot set AR...
Python OOP(2)-static method,class method and instance method
静态方法(Static Method):一种简单函数,符合以下要求:1.嵌套在类中。2.没有self参数。特点:1.类调用、实例调用,静态方法都不会接受自动的self参数。2.会记录所有实例的信息,而不是为实例提供行为。简单说staticmethod 无法访问类属性、实例属性,相当于一个相对独立的方...
kafka.common.KafkaException: Failed to acquire lock on file .lock in /tmp/kafka-logs. A Kafka instance in another process or thread is using this directory.
1、刚才未启动zookeeper集群的时候,直接启动kafka脚本程序,kafka报错了,但是进程号启动起来来,再次启动出现如下所示的问题,这里先将进程号杀死,再启动脚本程序。 [hadoop@slaver1 script_hadoop]$ kafka-start.sh start kafkaSer...
spring mvc 500错误Allocate exception for servlet AppService javax.naming.NamingException: Cannot create resource instance 竟是@Resource的原因
头几天已经测试的完毕了,换了个目录出现这个问题 严重: Allocate exception for servlet AppServicejavax.naming.NamingException: Cannot create resource instance at org.apache....
javax.naming.NamingException: Cannot create resource instance报错修改
//下面内容为网上获取 avax.naming.NamingException: Cannot create resource instance at org.apache.naming.factory.ResourceEnvFactory.getObjectInstance(ResourceEnv...
The ObjectContext instance has been disposed and can no longer be used for operations that require a connection.
The ObjectContext instance has been disposed and can no longer be used for operations that require a connection.How to solve the error The ObjectConte...
java.lang.NoSuchFieldError: INSTANCE
java.lang.NoSuchFieldError: INSTANCE异常,可能是包重复了。我遇到的情况是maven里引入了一个JAR,而我又在lib里面引入了这个jar,并且版本还不相同,就出了这个错。
vuejs - the component is a fragment instance
vuejs - the component is a fragment instancehttp://vuejs.org/guide/components.html#Fragment-Instance...
EC2 Instance扩容EBS卷容量
EC2实例运行一段时间后,由于日志和一些应用程序数据的积累,可能出现之前预留的磁盘容量不够需要扩容的情况。AWS EBS目前还不支持在线扩容,不过可以通过结合snapshot来实现。 如,我的EC2 Instance容量默认的8G不够用了,需要扩容。 1. 创建需要扩容磁盘的snapshot: 进...
The SQL Server instance returned an invalid or unsupported protocol version during login negotiatio
在使用.net core 连接sqlserver的时候遇到了这个问题从字面意思理解大致是个什么版本不支持,谷歌一下吧,ok,看到这个2000我就知道什么问题了我的数据库还是2000的,总算把2000给丢了,.net Core 支支持2005以上版本的sqlserver数据库换个新版的数据库吧。...
How do I use EC2 Systems Manager to join an instance to my AWS Directory Service domain?
1. Create new role "EC2RoleforSSM" in AWS IAM AWS->IAM->Roles->Create role->Select EC2, EC2 Role for Simple Systems Manager-&...
JSON.stringify(),org.springframework.http.converter.HttpMessageNotReadableException: Could not read document: Can not deserialize instance of java.util.ArrayList out of VALUE_STRING token(前台向后台传递list)
1.定义订单实体类 2.定义实体类中集合的实体类 3.在controller中接收 4.前台传递的正确的字段格式(加双引号的) 5.而报错的原因就是因为前台在集合中字段格式没有加双引号而报的这个错误 ...
Meteor: 关于Template实例(instance)和数据(data)
实例 按面向对象编程语言的说法,我们编写Template(html、helpers、events、lifecycle)时,相当于编写了一个类,而渲染Template的时候,则创建了一个它的实例。 我们可以在这个实例上添加变量,并在合适的地方引用它。 那么,如何访问这个实例? 在lifecycle中(...
C# : How to get most recently used instance from multiple running instances of my WPF application?
If there are multipple running applications, I need to get the most recently used. I know that I can find all running instances of my app using Proces...
ruby: use module include in instance method of class
Have a look at the code below 看看下面的代码吧 initshared.rbmodule InitShared def init_shared @shared_obj = "foobar" endend myclass.rb myclass.rb class M...
[paper reading] C-MIL: Continuation Multiple Instance Learning for Weakly Supervised Object Detection CVPR2019
MIL陷入局部最优,检测到局部,无法完整的检测到物体。将instance划分为空间相关和类别相关的子集。在这些子集中定义一系列平滑的损失近似代替原损失函数,优化这些平滑损失。 C-MIL learns instance subsets, where the instances are spatial...
How can you get eclipse code complete for CI when using &get_instance()?
I'm currently using Eclipse PDT and CodeIgniter, is it possible to get code-completion for the sessions library like so: 我目前正在使用Eclipse PDT和CodeIgnite...
When using SqlDependency without providing an options value, SqlDependency.Start() must be called prior to execution of a command added to the SqlDependency instance.
在调试SignalR程序时,提示一个异常:When using SqlDependency without providing an options value, SqlDependency.Start() must be called prior to execution of a command...
ORACLE AUTOMATIC STORAGE MANAGEMENT翻译-第二章 ASM instance(1)
第二章 ASM INSTANCEASM的类型,例如可以:10g后ORACLE instance 类型增加了一个ASM种类。参数INSTANCE_TYPE=ASM进行设置。ASM实例启动命令:startup nomount启动实例和后台进程。但没有挂载磁盘组mount以后。实例会启动參数文件里ASM...