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Link to the original text: http://www.dubby.cn/detail.html?id=9024 This brief introduction This article is intended for beginners of ZooKeeper, introducing simple installation, configuration, and commands to try to run ZooKeeper. Also mentioned are some slightly responsible installations - replicated deployments, log optimization. Of course, ...

Before installing tomcat, you need to install java first. Install java package directly with centos, so install java directly with yum is simple and fast. See what jdk versions are available in the yum library (only openjdk is found for the time being) yum search java|grep jdk ldapjdk-javadoc.x86_64 : Javadoc for ldapjdk java-1.6.0-open ...

Personal blog address: http://www.pojun.tech/ Welcome to visit What is CA Certificate _About what CA certificate is, and how to apply for and build CA certificate using Open-SSL, we have already introduced it in previous articles, and we will not repeat it here. If in doubt, refer to the previous article. http://www.pojun.tech/blog/2017/0 ...

Preface Before I did not understand the concept of public key, private key and certificate, I recently summarized and sorted it out. Now share it. Note: The concept of public key, private key and certificate is derived from the generated signature. Generate key.store Run - CMD - DOS window Generate java keystore file C:\Users\weichyan ...

Since the rise of RESTFul API, Spring has provided developers with a client to access Rest. RestTemplate can not only call http interface conveniently, but also call micro-services under the same registry. It also has load balancing and fusing mechanisms. Of course, I've heard about OKhttp, HTTPClient and other network frameworks, but we're fo ...

Introduction to Apache CXF Apache CXF = Celtix + Xfire Holding multiple protocols SOAP1.1,1.2 XML/HTTP CORBA (Common Object Request Broker Architecture Common Object Request Broker Architecture, WS used in early languages). C,c++,C#) And it can be quickly and seamlessly integrated with Spring Flexible deployment: It can run on Tomcat, Jbo ...

package com.XXX; import java.io.IOException; import java.io.OutputStream; import java.net.URLEncoder; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Iterator; import java.util.LinkedHashMap; import java.util.Set; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletRespon ...

According to the description above, the entry to send a transaction message is: TransactionMQProducer#sendMessageInTransaction: public TransactionSendResult sendMessageInTransaction(final Message msg, final Object arg) throws MQClientException { if (null == this.transactionListener) { // @1 throw new MQClientException("T ...

Install jdk, tomcat environment [root@centos6 ~]# tar zxf jdk-8u111-linux-x64.tar.gz -C /usr/local/ [root@centos6 ~]# tar zxf apache-tomcat-8.5.9.tar.gz -C /usr/local/ [root@centos6 local]# export JAVA_HOME=/usr/local/jdk1.8.0_111 [root@centos6 local]# export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar [ ...

New table "apache_log" in hive CREATE TABLE apachelog ( host STRING, identity STRING, user STRING, time STRING, request STRING, status STRING, size STRING, referer STRING, agent STRING) ROW FORMAT SERDE 'org.apache.hadoop.hive.serde2.RegexSerDe' WITH SERDEPROPERTIES ( "input.regex" = "([^ ] ...