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1, Version Description hadoop 2.7.3TensorFlow 1.1.0xlearning 1.1java 1.8.0pyton 2.7.5 2, System environment installation 1. Install java Download the jdk-8u73-linux-x64.tar.gz package, unzip it, and place it in the specified directory (such as: / opt / xlsearching / software directory) tar -xzvf jdk-7u67-linux-x64.t ...

Configuration preparation Add the following dependencies to the build.gradle file: compile "org.elasticsearch.client:transport:5.5.2" compile "org.elasticsearch:elasticsearch:5.5.2" //apache log4 logs used internally by es 5.x compile "org.apache.logging.log4j:log4j-core:2.7" compile "org.apache.logging.lo ...

The Mybatis framework no longer introduces: There are some problems in JDBC: 1. Frequent connection and release of resources waste memory 2. The coding is not easy to maintain So we have a framework to simplify database operation: Hibernate, Mybatis and so on. Here we introduce Mybatis   Download address: https://github.com/mybatis/mybatis-3/re ...

Spring boot provides strong AOP support. AOP facet is mainly the method of cutting. We usually do some log analysis and transaction operations, which use facet, similar to interceptor; @Aspect annotation is a tangent annotation class @Pointcut tangent definition @Before is called before method execution. @After is called after ...

spring cloud admin brief introduction Spring Boot Admin is used to monitor applications based on Spring Boot. It provides a simple visual WEB UI based on Spring Boot activator. Spring Boot Admin provides many functions, such as displaying name, id and version, displaying online status, Loggers' log level management, Threads thread management, ...

Eureka Yes. Netflix Developed, a REST service based, service registration and discovery component It mainly includes two components: Eureka Server and Eureka Client Eureka Client: a Java client used to simplify the interaction with Eureka Server (usually the client and server in microservices) Eureka Server: provides service registration and d ...

1. overview Spring Cloud gateway is an official gateway developed by spring based on Spring 5.0, Spring Boot2.0, Project Reactor and other technologies. Spring Cloud gateway aims to provide a simple, effective and unified API route management method for microservice architecture. As a gateway in Spring Cloud health system, Spring Cloud gateway ...

Configuration (log4j.properties) log4j.rootLogger = debug,stdout,D,E,DB ### Output information to control lift ### log4j.appender.stdout = org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target = System.out #### change to info in deployed env.### log4j.appender.stdout.Threshold = DEBUG log4j.appender.stdout.layout = org.apache.log4j.Pa ...

The content of the content 1. Steps of building SSM framework for maven project 1. Environment construction and project structure improvement 2. Write sql statement and establish database structure 3. Create a new maven project and write pom.xml file 4. Write entity class 5. Write dao layer code and ...

The Simple Logging Facade for Java(SLF4J) provides the abstraction of various logging frameworks (such as java.util.log, logback, log4j), allowing users to introduce the required logging framework during deployment; its functions are similar to those of Commons logging, but SLF4J adapts a broader logging framework. The software version used in ...