spring boot mongodb example

) Execution java -jar xxx.jar --spring.profiles.active=prod , you can observe that the service port is set to 3333 , that is, the configuration of the production environment (PROD) According to the above experiment, we can summarize the multi-environment configuration ideas as follows: application.propertiesThe common content is configured in and set to the spring.profiles.active=dev development environment as the default configuration application-{profile}.properti

Spring Boot series (iii) Spring boot common annotations @RestController and @requestmapping @RestController is called a stereotype (stereotype) annotation. It provides suggestions for developers who read the code. For spring, this class plays a special role. It inherits fro

object and use the @bean callout as the spring bean Here's an example that returns the Graphqlschema object directly in a simplified manner as follows: @Bean Graphqlschema schema () { String schema = "type Query {hello:string}"; Schemaparser schemaparser = new Schemaparser (); Typedefinitionregistry typedefinitionregistry = schemaparser.parse (schema); Runtimewirin

load into the Pom.xml properties> project.build.sourceEncoding>UTF-8project.build.sourceEncoding> java.version>1.8java.version> properties>A city standard spring boot code structureA typical spring boot project structure, which is also recommended by the websitecom +-

widely used in domestic and foreign internet companies.The biggest feature of MongoDB is the support of the query language is very powerful, its syntax is somewhat similar to the object-oriented query language, almost can achieve similar relational database single-table query most of the functions, but also support the indexing of data. MongoDB's implementation of high-availability and read-write load balancing is very concise and friendly, and

This section will delve into the details of spring boot to learn the main features of the spring boot that you want to use or customize.1. SpringapplicationThe Springapplication class provides a convenient way to guide a spring application, which is opened from the main meth

. @ EnableAutoConfigurationWith @ Import (EnableAutoConfigurationImportSelector. class), The META-INF/spring. factories will be scannedAll org. springframework. boot. autoconfigure. EnableAutoConfiguration. For further scanning. Complete. mvn clean install Create a new project. Introduce the package project @Autowired private StringRedisTemplate redisTemplate; That's easy. Most of the time we want to expan

It is believed that many developers who have used spring know that spring provides a very useful JavaMailSender interface for sending mail. An automated configuration is also provided for this in the Spring Boot starter module. Here's an example of how to use Send mail in

2.0 pairs the database with support for automatic configuration (auto-configuration) reactive: MongoDB (spring-boot-starter-data-mongodb-reactive) Redis (spring-boot-starter-data-redis-reactive) Cassandra (

The main contents of this chapter:With previous learning, we learned and quickly completed the first spring boot application. Spring Boot Enterprise Framework, then how does spring boot read static resources? such as JS folder, CS

Configuration is one of the key cores of the spring framework, so the spring application will certainly need to be configured to run normally, but the use of spring Boot after a lot of configuration is not done, then auto-configuration exactly how it happened? What is the order and procedure of the occurrence? How did

dependencies between the application libraries. This means that if you create a project with a specific Spring IO version, you no longer need to define the version of the library. Even the spring boot startup Project is part of this spring IO. For example, if you are using

is being modified, and the document and code are in two different mediums, which can easily lead to inconsistencies unless there is a strict management mechanism. To solve this problem, this article introduces the Swagger2 partner of the RESTful API, which can easily be integrated into spring boot and organize a robust RESTful API document with the Spring M

1, SPRINGMVC automatic configuration of official documents Spring Boot Official Documentation: SPRINGMVC configuration document in spring boot 2. Spring MVC auto-configuration Spring Boot