spring boot interview questions

Resource InitData = new Classpathresource ("Init /inittestdata.json "); Factory.setresources (New Resource[]{initdata}); else{ factory.setresources (New resource[]{}); return factory; } You may have questions about what this db_rebuildmongodata variable is. Because this class is executed when spring boot i

more configuration information, see Common application properties. 5. Exception Handling @ControllerAdvicepublic class GlobalExceptionHandler { @ExceptionHandler(MultipartException.class) public String handleError1(MultipartException e, RedirectAttributes redirectAttributes) { redirectAttributes.addFlashAttribute("message", e.getCause().getMessage()); return "redirect:/uploadStatus"; }} Set a @ ControllerAdvice to monitor whether the file size Uploaded By Multipart is limited. When this except

configure multiple environment configuration files If you use application. properties is used to configure multiple environments. The principle is the same as that of using multiple yml configuration files. application-{profile} is also used }. properties to control the configuration of the loaded environment. It will place environment-independent properties in the application. in the properties file, use spring. profiles. the value of active = profi

= "/user") public class WSUser {@ Autowired private UserMapper userMapper; /*** query all user information in the project ** @ param projectCode project code * @ return user list */@ RequestMapping (value = "/v1/users", method = RequestMethod. GET) public List The projectCode parameter is required for each query. 7. Compile the startup code of the Spring Boot App package com.elon.dds;import org.springfram

, Groovy, Thymeleaf, Mustache Use Gradle build configuration compile(“org.springframework.boot:spring-boot-devtools”) You only need to add dependencies (that is, reference jar) without using "code ". However, some configurations can be used and configured in application. properties. Spring. devtools. * These listed configurations are all related to spring-

http://www.infoq.com/cn/news/2014/01/spring-boot/With the release of the new Spring 4 release, Spring Boot's new sub-project has received a wide range of attention, as both the Spring 4 official press release and the interview wit

: /*** Dynamic Data source: Use AOP to dynamically switch between different data sources * @ return */@ Bean (name = "dynamicDS1") public DataSource dataSource () {DynamicDataSource dynamicDataSource = new DynamicDataSource (); // default data source dynamicDataSource. setDefaultTargetDataSource (performance1 (); // configure multi-data source Map Custom annotation @ DS is used to specify the data source used by the method during encoding: @Retention(RetentionPolicy.RUNTIME)@Target({ ElementTy

This series of articles is my spare time to write, originated in the micro- service is more interested in a simple understanding of the next spring Boot and Spring Cloud, because the relative ecology and maturity are relatively perfect, standing on the shoulders of giants , so the article is to think which topic to write which article, and there is no order, thes

First, the Spring Boot interpretation : (Baidu Encyclopedia) Spring Boot is a new framework provided by the pivotal team designed to simplify the initial setup and development of new spring applications. The framework uses a specific approach to configuration, which elimin

path: org.springframework.web.servlet.view.freemarker.spring.ftl spring: freemarker: settings: auto_import: /spring.ftl as spring Form Page code Note: you must first useBind the field, and then useTo retrieve the error message. Reference Https://spring.io/guides/gs/validating-form-input/ Summary The above section describes how to add Form Verification hibernate-validator in

Spring boot devtools implements the hot deployment method in Idea, devtoolsidea 1. pom. xml file Note: The Hot deployment feature is available starting with spring-boot-1.3. Note: Add spring-boot-maven-plugin to the project, whic

updatePersonById(Person person); public int updatePersonByPhoneNo(Person person); } You only need to use the @ Mapper annotation to locate it by Mybatis and write SQL statements on the method. 4. XML file: Create the mapper directory under the resources directory, and then create the xml file as follows: 5. test: @ Test public void dbTest () throws JsonProcessingException {Person person2 = personDAO. getPersonById (2); logger.info ("person no 2 is :{}", objectMapper. writeValueAsString (pers

The main contents of this section:1: Thinking question: How to read multiple configuration files, what if the file does not exist2: Configure the database connection poolStatement:This is the important note for the Spring boot framework to learn preschool (4)-Read the external resource Profile 2 by annotating the Edith with you learning Series-Framework Learning Spring