在配置负载均衡环境过程中修改server.xml  后重启tomcat报错,报错信息如下

[root@Alice bin]# ./catalina.sh run
Using CATALINA_BASE: /usr/local/TC6_A
Using CATALINA_HOME: /usr/local/TC6_A
Using CATALINA_TMPDIR: /usr/local/TC6_A/temp
Using JRE_HOME: /usr/java/jdk1.6.0_45
Using CLASSPATH: /usr/local/TC6_A/bin/bootstrap.jar
2015-1-9 1:44:18 org.apache.catalina.core.AprLifecycleListener init
信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/jdk1.6.0_45/jre/lib/i386/client:/usr/java/jdk1.6.0_45/jre/lib/i386:/usr/java/jdk1.6.0_45/jre/../lib/i386:/usr/java/packages/lib/i386:/lib:/usr/lib
2015-1-9 1:44:18 org.apache.coyote.http11.Http11Protocol init
信息: Initializing Coyote HTTP/1.1 on http-10001
2015-1-9 1:44:18 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 784 ms
2015-1-9 1:44:18 org.apache.catalina.core.StandardService start
信息: Starting service Catalina
2015-1-9 1:44:18 org.apache.catalina.core.StandardEngine start
信息: Starting Servlet Engine: Apache Tomcat/6.0.37
2015-1-9 1:44:18 org.apache.catalina.ha.tcp.SimpleTcpCluster start
信息: Cluster is about to start
2015-1-9 1:44:18 org.apache.catalina.tribes.transport.ReceiverBase getBind
严重: Failed bind replication listener on address:auto
java.net.UnknownHostException: Alice.An: Alice.An
at java.net.InetAddress.getLocalHost(InetAddress.java:1402)
at org.apache.catalina.tribes.transport.ReceiverBase.getBind(ReceiverBase.java:180)
at org.apache.catalina.tribes.transport.nio.NioReceiver.start(NioReceiver.java:101)
at org.apache.catalina.tribes.group.ChannelCoordinator.internalStart(ChannelCoordinator.java:142)
at org.apache.catalina.tribes.group.ChannelCoordinator.start(ChannelCoordinator.java:97)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:149)
at org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor.start(MessageDispatchInterceptor.java:147)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:149)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:149)
at org.apache.catalina.tribes.group.GroupChannel.start(GroupChannel.java:407)
at org.apache.catalina.ha.tcp.SimpleTcpCluster.start(SimpleTcpCluster.java:672)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1047)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
at org.apache.catalina.core.StandardService.start(StandardService.java:525)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
2015-1-9 1:44:18 org.apache.catalina.tribes.transport.ReceiverBase getBind
严重: Failed bind replication listener on address:auto
java.net.UnknownHostException: Alice.An: Alice.An
at java.net.InetAddress.getLocalHost(InetAddress.java:1402)
at org.apache.catalina.tribes.transport.ReceiverBase.getBind(ReceiverBase.java:180)
at org.apache.catalina.tribes.transport.ReceiverBase.bind(ReceiverBase.java:204)
at org.apache.catalina.tribes.transport.nio.NioReceiver.bind(NioReceiver.java:132)
at org.apache.catalina.tribes.transport.nio.NioReceiver.start(NioReceiver.java:102)
at org.apache.catalina.tribes.group.ChannelCoordinator.internalStart(ChannelCoordinator.java:142)
at org.apache.catalina.tribes.group.ChannelCoordinator.start(ChannelCoordinator.java:97)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:149)
at org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor.start(MessageDispatchInterceptor.java:147)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:149)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:149)
at org.apache.catalina.tribes.group.GroupChannel.start(GroupChannel.java:407)
at org.apache.catalina.ha.tcp.SimpleTcpCluster.start(SimpleTcpCluster.java:672)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1047)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
at org.apache.catalina.core.StandardService.start(StandardService.java:525)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
2015-1-9 1:44:18 org.apache.catalina.tribes.transport.ReceiverBase bind
信息: Receiver Server Socket bound to:0.0.0.0/0.0.0.0:4000
2015-1-9 1:44:18 org.apache.catalina.tribes.transport.ReceiverBase getBind
严重: Failed bind replication listener on address:auto
java.net.UnknownHostException: Alice.An: Alice.An
at java.net.InetAddress.getLocalHost(InetAddress.java:1402)
at org.apache.catalina.tribes.transport.ReceiverBase.getBind(ReceiverBase.java:180)
at org.apache.catalina.tribes.transport.ReceiverBase.getAddress(ReceiverBase.java:264)
at org.apache.catalina.tribes.transport.ReceiverBase.getHost(ReceiverBase.java:269)
at org.apache.catalina.tribes.group.ChannelCoordinator.internalStart(ChannelCoordinator.java:144)
at org.apache.catalina.tribes.group.ChannelCoordinator.start(ChannelCoordinator.java:97)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:149)
at org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor.start(MessageDispatchInterceptor.java:147)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:149)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:149)
at org.apache.catalina.tribes.group.GroupChannel.start(GroupChannel.java:407)
at org.apache.catalina.ha.tcp.SimpleTcpCluster.start(SimpleTcpCluster.java:672)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1047)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
at org.apache.catalina.core.StandardService.start(StandardService.java:525)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
2015-1-9 1:44:18 org.apache.catalina.ha.tcp.SimpleTcpCluster start
严重: Unable to start cluster.
org.apache.catalina.tribes.ChannelException: java.lang.IllegalArgumentException: java.net.UnknownHostException: auto; No faulty members identified.
at org.apache.catalina.tribes.group.ChannelCoordinator.internalStart(ChannelCoordinator.java:169)
at org.apache.catalina.tribes.group.ChannelCoordinator.start(ChannelCoordinator.java:97)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:149)
at org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor.start(MessageDispatchInterceptor.java:147)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:149)
at org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:149)
at org.apache.catalina.tribes.group.GroupChannel.start(GroupChannel.java:407)
at org.apache.catalina.ha.tcp.SimpleTcpCluster.start(SimpleTcpCluster.java:672)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1047)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
at org.apache.catalina.core.StandardService.start(StandardService.java:525)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: java.lang.IllegalArgumentException: java.net.UnknownHostException: auto
at org.apache.catalina.tribes.membership.McastService.setLocalMemberProperties(McastService.java:163)
at org.apache.catalina.tribes.group.ChannelCoordinator.internalStart(ChannelCoordinator.java:144)
... 18 more
Caused by: java.net.UnknownHostException: auto
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:876)
at java.net.InetAddress.getAddressFromNameService(InetAddress.java:1229)
at java.net.InetAddress.getAllByName0(InetAddress.java:1180)
at java.net.InetAddress.getAllByName(InetAddress.java:1110)
at java.net.InetAddress.getAllByName(InetAddress.java:1046)
at java.net.InetAddress.getByName(InetAddress.java:996)
at org.apache.catalina.tribes.membership.MemberImpl.setHostname(MemberImpl.java:550)
at org.apache.catalina.tribes.membership.MemberImpl.<init>(MemberImpl.java:129)
at org.apache.catalina.tribes.membership.McastService.setLocalMemberProperties(McastService.java:156)
... 19 more
2015-1-9 1:44:18 org.apache.catalina.startup.Catalina start
严重: Catalina.start:
LifecycleException: org.apache.catalina.tribes.ChannelException: java.lang.IllegalArgumentException: java.net.UnknownHostException: auto; No faulty members identified.
at org.apache.catalina.ha.tcp.SimpleTcpCluster.start(SimpleTcpCluster.java:679)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1047)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
at org.apache.catalina.core.StandardService.start(StandardService.java:525)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
2015-1-9 1:44:18 org.apache.catalina.startup.Catalina start
信息: Server startup in 237 ms

网上查找关键词 严重: Unable to start cluster.
org.apache.catalina.tribes.ChannelException:
java.lang.IllegalArgumentException: java.net.UnknownHostException:
auto; No faulty members identified. 后查找到 可能原因是server.xml文件出错了,于是尝试修改如下:

  1. <ReceiverclassName="org.apache.catalina.tribes.transport.nio.NioReceiver"
  2. address="auto"     //把这个改为localhost或都自己的ip都可以;如果用auto的话,在vmware里会与主机的实际ip产生冲突,原因不知道是什么,呵呵。
  3. port="4000"
  4. autoBind="100"
  5. selectorTimeout="5000"
  6. maxThreads="6"/>

参考文章:http://www.linuxidc.com/Linux/2011-08/39833.htm

修改后重启Tomcat

./ shutdowm.sh

./catalina.sh run

[root@Alice bin]# ./shutdown.sh
Using CATALINA_BASE:   /usr/local/TC6_A
Using CATALINA_HOME:   /usr/local/TC6_A
Using CATALINA_TMPDIR: /usr/local/TC6_A/temp
Using JRE_HOME:        /usr/java/jdk1.6.0_45
Using CLASSPATH:       /usr/local/TC6_A/bin/bootstrap.jar
2015-1-9 11:20:56 org.apache.catalina.startup.Catalina stopServer
严重: Catalina.stop:
java.net.ConnectException: Connection refused
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)
    at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
    at java.net.Socket.connect(Socket.java:529)
    at java.net.Socket.connect(Socket.java:478)
    at java.net.Socket.<init>(Socket.java:375)
    at java.net.Socket.<init>(Socket.java:189)
    at org.apache.catalina.startup.Catalina.stopServer(Catalina.java:422)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.catalina.startup.Bootstrap.stopServer(Bootstrap.java:338)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:416)
[root@Alice bin]# ./catalina.sh run
Using CATALINA_BASE:   /usr/local/TC6_A
Using CATALINA_HOME:   /usr/local/TC6_A
Using CATALINA_TMPDIR: /usr/local/TC6_A/temp
Using JRE_HOME:        /usr/java/jdk1.6.0_45
Using CLASSPATH:       /usr/local/TC6_A/bin/bootstrap.jar
2015-1-9 11:21:32 org.apache.catalina.core.AprLifecycleListener init

息: The APR based Apache Tomcat Native library which allows optimal
performance in production environments was not found on the
java.library.path:
/usr/java/jdk1.6.0_45/jre/lib/i386/client:/usr/java/jdk1.6.0_45/jre/lib/i386:/usr/java/jdk1.6.0_45/jre/../lib/i386:/usr/java/packages/lib/i386:/lib:/usr/lib
2015-1-9 11:21:34 org.apache.coyote.http11.Http11Protocol init
信息: Initializing Coyote HTTP/1.1 on http-10001
2015-1-9 11:21:34 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 1948 ms
2015-1-9 11:21:34 org.apache.catalina.core.StandardService start
信息: Starting service Catalina
2015-1-9 11:21:34 org.apache.catalina.core.StandardEngine start
信息: Starting Servlet Engine: Apache Tomcat/6.0.37
2015-1-9 11:21:34 org.apache.catalina.ha.tcp.SimpleTcpCluster start
信息: Cluster is about to start
2015-1-9 11:21:34 org.apache.catalina.tribes.transport.ReceiverBase bind
信息: Receiver Server Socket bound to:/192.168.0.102:4000
2015-1-9 11:21:34 org.apache.catalina.tribes.membership.McastServiceImpl setupSocket
信息: Setting cluster mcast soTimeout to 500
2015-1-9 11:21:34 org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers
信息: Sleeping for 1000 milliseconds to establish cluster membership, start level:4
2015-1-9 11:21:35 org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers
信息: Done sleeping, membership established, start level:4
2015-1-9 11:21:35 org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers
信息: Sleeping for 1000 milliseconds to establish cluster membership, start level:8
2015-1-9 11:21:36 org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers
信息: Done sleeping, membership established, start level:8
2015-1-9 11:21:36 org.apache.catalina.ha.deploy.FarmWarDeployer start
严重: FarmWarDeployer can only work as host cluster subelement!
2015-1-9 11:21:36 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory docs
2015-1-9 11:21:37 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory ROOT
2015-1-9 11:21:37 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory manager
2015-1-9 11:21:37 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory host-manager
2015-1-9 11:21:37 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory examples
2015-1-9 11:21:37 org.apache.catalina.core.ApplicationContext log
信息: ContextListener: contextInitialized()
2015-1-9 11:21:37 org.apache.catalina.core.ApplicationContext log
信息: SessionListener: contextInitialized()
2015-1-9 11:21:37 org.apache.catalina.ha.session.JvmRouteBinderValve start
信息: JvmRouteBinderValve started
2015-1-9 11:21:37 org.apache.coyote.http11.Http11Protocol start
信息: Starting Coyote HTTP/1.1 on http-10001
2015-1-9 11:21:38 org.apache.jk.common.ChannelSocket init
信息: JK: ajp13 listening on /0.0.0.0:10009
2015-1-9 11:21:38 org.apache.jk.server.JkMain start
信息: Jk running ID=0 time=0/157  config=null
2015-1-9 11:21:38 org.apache.catalina.startup.Catalina start
信息: Server startup in 4021 ms

重启后可以看到虽然还是有报错,但是错误明显少了很多,于是输入 http://localhost:10001进行验证(10001为自己设置的端口)

依然不成功,想了想恍然大悟,可能是防火墙没关

service iptables status查看防火墙状态,果然是防火墙没关

service iptables stop

再次验证 哈哈! 成了

友情提示:经常会忘关防火墙,所以有问题多想想防火墙有没有关

此问题还需再研究 但是目前暂时算解决了吧

配置server.xml后,启动tomcat 失败(Unable to start cluster)及解决方法的更多相关文章

  1. 在配置wem.xml后,Tomcat遇到问题,启动失败的解决方法

    前两天在写程序时,碰到了Tomcat无法启动的问题,就是在配置完web.xml后.想必好多小伙伴都有遇到吧. 如图: 出现这个错误的原因是:在配置web.xml的时候出现了错误! 如图所示,没有修改这 ...

  2. linux安装tomcat后启动报错Cannot find ./catalina.sh的解决方法

    linux安装tomcat后启动报错: Cannot find ./catalina.shThe file is absent or does not have execute permissionT ...

  3. 在eclipse中启动tomcat加载不了项目的解决方法

    一.在server视图右键选择Add and Remove时,如果想要部署的项目不在左侧的待选列表中,或是弹出警告There are no resources that can be added or ...

  4. Eclipse中启动tomcat: java.lang.OutOfMemoryError: PermGen space的解决方法

    tomcat启动的时候出现这种错误一般是项目引用了太多的jar包,或者反射生成了太多的类,或者有太多的常量池,导致非堆内存中永久保存区域不够,就有可能会报java.lang.OutOfMemoryEr ...

  5. Tomcat学习笔记 - 错误日志 - NetBeans配置tomcat出错情况总结 -- 部署错误: 启动 Tomcat 失败。-- '127.0.0.1' 不是内部或外部命令,也不是可运行的程序

    真的管用,不知道为啥管用.转载自:http://blog.sina.com.cn/s/blog_709548200102vgy4.html 问题描述: 新安装的NetBeans8.0.2,安装过程中还 ...

  6. Tomcat中文乱码问题的原理和解决方法

    1) 更改 D:\Tomcat\conf\server.xml,指定浏览器的编码格式为“简体中文”: 方法是找到 server.xml 中的 <Connector port="8080 ...

  7. MySQL主从失败 错误Got fatal error 1236解决方法

    --MySQL主从失败 错误Got fatal error 1236解决方法 ----------------------------------------------------2014/05/1 ...

  8. Android stutdio2.2 启动模拟器出现“/dev/kvm is not found.”解决方法

    第一次启动avd,Android stutdio会自动安装Intel HAXM,而且表面看是成功的,再次启动会出现“/dev/kvm is not found.”,这说明Intel HAXM没有安装成 ...

  9. SQL Server 无法在服务器上访问指定的路径或文件解决方法

    SQL Server 无法在服务器上访问指定的路径或文件解决方法 在SQL Server附加数据库或备份数据库时出现:无法在服务器上访问指定的路径或文件. 请确保您具有必需的安全权限且该路径或文件存在 ...

随机推荐

  1. jps命令

    转载:http://blog.csdn.net/wanglha/article/details/40181701 ps -- JavaVirtual Machine Process Status To ...

  2. asp.net读取txt并导入数据库

    源地址:http://www.cnblogs.com/hfzsjz/p/3214649.html

  3. [Java] 01 String 内存分析

    public class StringTest{ public static void main(String[] args){ String str1 = new String("123& ...

  4. [ActionScript 3.0] AS3 用于拖动对象时一次一页的缓动

    package com.fylibs.components.effects{ import com.tweener.transitions.Tweener; import flash.display. ...

  5. CDN和DNS

    相信有很多的朋友会被这几个名词绕的有些头大,很多朋友觉得智能DNS跟双线加速.CDN加速是类似的技术.其实不然,虽然他们的目的都是一个:让用户更快的访问网站.但是他们的应用原理却大相径庭.大家一定很清 ...

  6. 解决:对 PInvoke 函数的调用导致堆栈不对称问题 <转载>

    问题描述: 在使用托管代码调用非托管代码时,发生“对 PInvoke 函数“UseTwiHikVisionDllTest!UseTwiHikVisionDllTest.TwiHikVision::Ge ...

  7. Appium启动服务报错

    错误信息如下: error: Could not find a device to launch. You requested 'iPhone 6 (8.4)', but the available ...

  8. Java高级软件工程师面试考纲(转)

    如果要应聘高级开发工程师职务,仅仅懂得Java的基础知识是远远不够的,还必须懂得常用数据结构.算法.网络.操作系统等知识.因此本文不会讲解具体的技术,笔者综合自己应聘各大公司的经历,整理了一份大公司对 ...

  9. MPush开源消息推送系统:简洁、安全、支持集群

    引言由于之前自己团队需要一个消息推送系统来替换JPUSH,一直找了很久基本没有真正可用的开源系统所有就直接造了个轮子,造轮子的时候就奔着开源做打算的,只是后来创业项目失败一直没时间整理这一套代码,最近 ...

  10. opecv轮廓匹配,可以用于去噪

    一个跟轮廓相关的最常用到的功能是匹配两个轮廓.如果有两个轮廓,如何比较它们;或者如何比较一个轮廓和另一个抽象模板. 矩 比较两个轮廓最简洁的方式是比较他们的轮廓矩.这里先简短介绍一个矩的含义.简单的说 ...