spring boot interview questions

Person.first-name, dashed (-) split method, recommended for use in. Properties and. Yml Configuration Files Person_ first_name, uppercase underline, recommended to use attribute validation in system environment variables You can use the JSR-303 annotation for validation, for example: @Component @ConfigurationProperties (prefix= "Connection") public class ConnectionSettings { @NotNull private inetaddress remoteaddress; ... getters and setters }1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8

Java programmer interview questions (86-115) 86. In Struts 2, how does Action obtain the data that the user inputs from the page, and how does it transmit its own data to the view? A: There are three ways for Action to retrieve data from the page: 1) accept parameters through the Action attribute 2) obtain parameters through the domain model 3) ModelDriven ) Action saves data to the Value Stack. View

Controller: When the user clicks the Submit button in the Web page, the controller accepts the request and invokes the appropriate model to process the request. The corresponding view is then called according to the result of the processing to display the results of the processing. MVC process: First the controller accepts the user's request, invokes the corresponding model for business processing, and returns the data to the controller. The controller invokes the corresponding view to

20 Linux Command Interview Questions and answersQ: 1. How can I view the running level of the current Linux server? A: the who-r and runlevel commands can be used to view the running level of the current Linux server.Running level:0-downtime (do not set initdefault to 0) 1-Single User Mode 2-multiple users, but there is no NFS3-full multi-user mode 4-5-X116-Restart not used (do not set initdefault to 6) Q:

as 2:32 below, indicates how long the system has been running since the last start.[[email protected] DOWNLOAD] #uptime02:05:22 up 2:32, 2 users, Load average:0.00, 0.00, 0.0014. How to add route in Linux systemHost routingRoute add-host 192.168.197.100 Dev eth0Gateway RoutingRoute add default GW 192.168.197.1Network routingRoute ad-net 192.168.1.0 netmask 255.255.255.0 deveth1Route ad-net 192.168.1.0 netmask 255.255.255.0 gw192.168.197.115. The contents of the known Test.txt file are as follow

COSCO Java interview question zzz COSCO Java interview questions Java training materialsI. Java language1. Three basic features of object-oriented2. Concepts and differences between method overloading and method Rewriting3. Features of interfaces, internal classes, and abstract classes4. Basic file read/write classes** 5. Precautions for serialization and how to

Regular Interview Questions and answers by a ribaba Java engineer, Baba java 1. Implementation of Spring AOP and IOC Http://blog.csdn.net/tarena_lixy/article/details/7096114 Http://blog.csdn.net/kiss_vicente/article/details/6901295 Http://blog.csdn.net/it_man/article/details/4402245 2. Distributed message queue and distributed cache Message Queue: RabbitMQ, Kafka

); beanDefinition.setSynthetic(true); registry.registerBeanDefinition(BEAN_NAME, beanDefinition); } } } B. Add @ Import to the configuration class to introduce the above class. @Import(MyImportBeanDefinitionRegistrar.class) public class TestConfig{ } C. After this operation, you can use spring to obtain the bean. The above is a simple example of Spring

discard other tasks after the D.looper, each Looper create a message queue and thread object, not a resource pool; so the answer is AC9. The following understanding of the Android Ndk is correct ( ABCD )A, the NDK is a collection of a series of toolsB, NDK provides a stable, limited functionality of the API header file declarationC, so that "java+c" the development of the way finally become a positive, officially supported the development of the wayD, NDK will be the beginning of Android platfo

, for example:Spring.thymeleaf.mode:HTMLPlease refer to the Thymeleaf 3 for sample to see this in action.If you is using any of the other auto-configured Thymeleaf Extras (Spring Security, Data Attribute, or Java 8 time) your S Hould also override each of the their versions to one that's compatible with Thymeleaf 3.0.http://docs.spring.io/spring-boot/docs/1.5.4.R

20 Linux Command Interview Questions and answers Q: 1. How can I view the running level of the current Linux server? A: The 'Who-R' and 'runlevel' commands can be used to view the running level of the current Linux server. Q: 2. How do I view the default gateway of Linux? A: run the "route-n" and "netstat-nr" commands to view the default gateway. In addition to the default gateway information, these two co

Interview Questions for Linux System Engineers:1. view the maximum value of a single shared memory segment in Linux (command)IPCS-mIPCS-2. What command is used to query the server port of the specified IP address?The NMAP and nbtscan commands should be used to scan the question.3. What commands are used in crontab to define the priority level for executing a program?Nice/renice: Process Execution priorityCo

. Synchronize the data between the main library and the library, and then repeat the action again13. Use a single command to turn off all services except SSHD, Crond, network, Rsyslog services (no power-on automatic)Method One:[[Email protected]~]# for name in ' Chkconfig–list|grep 3:on|awk ' {print '} ' |grep-ev "sshd|crond|rsyslog|network" ';d och Kconfig $name Off;done[Email protected]~]# chkconfig–list|grep 3:onCrond 0:off 1:off 2:on 3:on 4:on 5:on 6:offNetwork 0:off 1:off 2:on 3:on 4:on 5:o