spring boot interview questions

Major updates to spring-boot-klock-starter V1.1 Main Functions, The redis-based spring-boot Distributed Lock component makes it extremely simple and out-of-the-box. This component is also applicable to spring mvc projects. Content of this update: Service key that supports

());} /** According to the settings of shared or not, Spring creates a ehcache base by Cachemanager.create () or new CacheManager () respectively. */@Bean PublicEhcachemanagerfactorybean Ehcachemanagerfactorybean () {Ehcachemanagerfactorybean CacheManagerFactoryBean=NewEhcachemanagerfactorybean (); Cachemanagerfactorybean.setconfiglocation (NewClasspathresource ("Ehcache.xml")); Cachemanagerfactorybean.setshared (true); returnCachemanagerfactorybean;

ObjectiveRequirement: When a key in Redis fails, the value of the failure is written to the database.Github:https://github.com/vergilyn/redissamples1, modify the redis.confThe Redis service installed by default is: Notify-keyspace-events "", modified to notify-keyspace-events Ex;Location: Redis Install the redis.windows-service.conf or redis.windows.conf. (depending on which configuration the Redis service loads, it looks like Redis 2.8+ is supported)The corresponding description can be found in

Https://stackoverflow.com/questions/40384056/consider-defining-a-bean-of-type-package-in-your-configuration-spring-bootYour Applicant class is not scanned it seems. By default all packages starting with the-the class where you have put'll be @SpringBootApplication scanned.Suppose your main class "Webserviceapplication" is in "" and then all components this com.service.something fall under "is com.service.so

that just hits a normal jar (not executable), and generally does not do so.In general, this goal will hit a new Jar/war and add the Jar/war that Maven defaults to. Original suffix, which you can see in the target directory:　　Reference1.https://docs.spring.io/spring-boot/docs/current-snapshot/reference/htmlsingle/#build-tool-plugins-maven-packaging2.https://docs.spring.io/

= "Ch.qos.logback.core.rolling.RollingFileAppender" > : Mm:ss. SSS}%x{log_id} [%thread]%-5level%logger{100}.%method\ (\):%l-%msg%n onWindows machines Setting Withjansi to True enablesANSIcolor code interpretation by the Jansi library.This requires org. fusesource.jansi: Jansi: 1.8 onThe classPath.Note that unix-based operating systems such as Linux and Mac OS X SupportANSIColor codes by default.recognizes"%black", "%red", "%green", "%yellow", "%blue", "%magenta", "%cyan", "%white", "%gray", "%bo

/**,static/**,public/**,templates/**,**/*Test.class,**/*Tests.class,git.properties # Patterns that should be excluded from triggering a full restart.spring.devtools.restart.poll-interval=1000 # Amount of time (in milliseconds) to wait between polling for classpath changes.spring.devtools.restart.quiet-period=400 # Amount of quiet time (in milliseconds) required without any classpath changes before a restart is triggered.spring.devtools.restart.trigger-file= # Name of a specific file that when ch

; SYSTEM.OUT.PRINTLN (pathname); Returnpath= "images/upload/" + diskfilename;//here is my own to do the return stringFile.transferto (NewFile (pathname));//file Dump}//Uploadresponsedata Custom Return data type entity {int code, String msg, Object data} return NewUploadresponsedata (CodeEnum.SUCCESS.getCode (), MSGENUM.SUCCESS.GETMSG (),NewIMG (Returnpath,NewDate ())); }}Five, summarize itFinally, here are some questions to ask. 1

1. Modify Spring Boot1. Add: Spring-boot-maven-plugin PluginBuild> Plugins> plugin> groupId>Org.springframework.bootgroupId> Artifactid>Spring-boot-maven-pluginArtifactid> plugin> Plugins>Build>The packaging format is as follows:groupId>Com.smartomgroupId>p

Spring boot uses properties to define the short message template method tutorial, springproperties Preface We usually encounter requirements such as text message sending and email sending during development. The sending content is often provided by the customer as a template. If We splice strings in the program to fix this template, obviously, it is a kind of practices for teammates. Generally, the template

Http://stackoverflow.com/questions/21944202/using-ehcache-in-spring-4-without-xml1. Ehcache Configuration Class@Configuration @enablecaching Public classCachingconfigImplementscachingconfigurer {@Bean (Destroymethod= "Shutdown") PublicNet.sf.ehcache.CacheManager Ehcachemanager () {cacheconfiguration cacheconfiguration=Newcacheconfiguration (); Cacheconfiguration.setname ("Mycachename"); Cacheconfigurati

Adding configuration informationspring.redis: database: 0 # Redis数据库索引（默认为0） #host: 192.168.1.8 #port: 6379 password: 123456 timeout: 10000 # 连接超时时间（毫秒） pool: max-active: 8 # 连接池最大连接数（使用负值表示没有限制） max-idle: 8 # 连接池中的最大空闲连接 max-wait: -1 # 连接池最大阻塞等待时间（使用负值表示没有限制） min-idle: 0 # 连接池中的最小空闲连接 cluster: nodes: - 192.168.1.8:9001 - 192.168.1.8:9002 - 192.168.1.8:9003You only need to add 3 master nodes, and 3 slave nodes do not need to be added.All you have to do is

The use of Springboot development, external development interface for call, passed in the parameters of Chinese, there is a lot of Chinese garbled, check the information, summed up the solution is as follows: The first step, the agreed parameter encoding format Whether using httpclient, or okhttp, to set the parameters of the encoding, in order to unify, here all set to utf-8 the second step, modify the Application.properties file Add the following configuration: Spring.http.encoding.force=true