Pycharm调试scrapy报错:Unknown command: crawl Use "scrapy" to see available commands
crawl 是我们调试运行python爬虫的命令在终端命令中,我们输入 scrapy crawl projectname 就可以运行我们的爬虫然而在终端cmd中调用成功,发现在Pycharm执行却报错误:Unknown command: crawlUse "scrapy" to see avai...
ECLIPSE java类文件从实心变为空心,以及右键项目没有 build path,或build path显示 no available source的问题
导入别人的项目,一开始问题是Java类文件的图标由实心变成了空心,这样的话类文件不能编译,main方法也不能执行。查了半天都说要重新配置 build path,可是我右键项目名根本就没有build path。然后有人说把右上角 javaEE改成 java改成Java后右键有 build path 了...
No instances available for provider
前言最近在学习springcloud时,遇到了许多坑,在使用ribbon的注解报错–No instances available for provider, 使用 @LoadBalanced //表明这个restRemplate开启负载均衡的功能,由于url错误报No instances avail...
dubbo.rpc.RpcException: No provider available from registry 192.168.211.122:2181 for service的解决办法
写代码碰到一个错误:com.alibaba.dubbo.rpc.RpcException: No provider available from registry 192.168.211.122:2181 for service com.atguigu.gmall.service.CartSer...
Feign报错Caused by: com.netflix.client.ClientException: Load balancer does not have available server
问题描述:Feign报错Caused by: com.netflix.client.ClientException: Load balancer does not have available server for client解决方式1、查看自己的Eureka中心,如下所示:2、查看Applica...
XenServer上启动虚拟机失败’The VDI is not available’的解决方法
在实际工作环境启动xenserver上的虚拟机出现了下面错误问题: 出现错误的过程:一个pool中3台机器,其中一台(也就是vm windows7(1)的host machine)挂了,想把此虚拟机启动到其他机器上,就出现了此问题解决方法: 1. 先找到此虚拟机对应的Vbd list ...
SharePoint 101 Code Samples are now available
The Microsoft Office Developer Center has created 101 code samples for SharePoint 2010. These samples cover a wide range of useful tasks from working ...
spring异步执行报异常No qualifying bean of type 'org.springframework.core.task.TaskExecutor' available
最近观察项目运行日志的时候突然发现了一个异常,[2018-04-03 10:49:07] 100.0.1.246 http-nio-8080-exec-9 DEBUG org.springframework.scheduling.annotation.AnnotationAsyncExecution...
The test form is only available for requests from the local machine
使用浏览器测试Web服务时出现提示“The test form is only available for requests from the local machine.”的解决办法在Web服务项目中的Web.config文件中添加如下配置即可:<system.web> <...
Myeclipse:No projects are available for deployment to this server!
这是因为以前的项目不是用myEclipse创建的,所以用myeclipse deploy的时候找不到你的项目。 可以这样做:右击原项目名 - myeclipse - Add myeclipse Web Capilities... 这样就可以用myEclipse做deployment了。
elasticsearch 使用tcp 访问NoNodeAvailableException[None of the configured nodes are available: [{#transport#-1}{Yk0WjtKbQXqYCJSDFRYlRA}
默认的 elasticsearch.yml 端口是9200,是给tcp提供的。如果想使用 自带的 TransportClient 需要配置为 tcp 的9300端口。配置方式为: 在/config/elasticsearch.yml 里面添加:# 设置节点间交互的tcp端口,默认是9300#tra...
连接db2数据库出现No buffer space available (maximum connections reached?)
Caused by: javax.naming.NamingException: [jcc][t4][2043][11550][3.57.82] 异常 java.net.SocketException:打开端口 50,000 上服务器 localhost/127.0.0.1 的套接字时出错,消息为:
CI集成phpunit Error: No code coverage driver is available 的解决
CI集成phpunit时,运行报No code coverage driver is available的错误,如下图:yanglingdeMacBook-Pro:tests yangling$ phpunitPHPUnit 6.1.3 by Sebastian Bergmann and contr...
java.lang.RuntimeException: com.netflix.client.ClientException: Load balancer does not have available server for client: service-one
一、异常信息java.lang.RuntimeException: com.netflix.client.ClientException: Load balancer does not have available server for client: service-one二、分析原因我的这个异常...
mac python install zlib not available
用brew install 3.4.4(python)时报zipimport.ZipImportError: can't decompress data; zlib not available的错误,采用以下两步解决。1、macdeMacBook-Pro:~ mac$ xcode-select --...
(转)Elasticsearch NoNodeAvailableException None of the configured nodes are available
问题背景:将es部署到内网中两台服务器,其Ip地址分别为:192.111.222.5,192.111.222.1(部署方式完全一样,是将192.111.222.1服务器上es整个部署包,拷贝到了192.111.222.5,包括索引文件)。在开发本机(IP:192.111.222.36)通过idea编...
解决Parameter '__frch_item_0' not found. Available parameters 问题
1. 问题描述:出现如下问题,执行报错信息Caused by: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter '...
org.quartz.utils.UpdateChecker Checking for available updated version of Quartz..
<dependency> <groupId>org.quartz-scheduler</groupId> <artifactId>quartz</artifactId> ...
What floating point types are available in .NET?
The C# standard only lists double and float as floating points available (those being the C# shorthand for System.Double and System.Single),but the de...
HA(High available)--Heartbeat高可用性集群(双机热备)菜鸟入门级
HA(High available)--Heartbeat高可用性集群(双机热备) 1.理解:两台服务器A和B ,当A提供服务,B闲置待命,当A服务宕机,会自动切换至B机器继续提供服务。当主机恢复正常后,按照使用者设定的自动或手动切换到主机上运行,数据一致性通过共享存储系统解决。2.实现该功能的软件...