How to use kotlin to write spring cloud Micro Service
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Create a project
Use idea's spring initializr to create a project with a language of kotlin and a type of gradle.
Choose dependencies as needed
Configuration file
Yml or properties files are exactly the same as java, which are not specified here
Modify the parameters in build.gradle.kts:
Plugins {/ / spring boot version id ("org.springframework.boot") version "2.3.3.RELEASE" / / automatic dependency package version management id ("io.spring.dependency-management") version "1.0.10.RELEASE".} / / spring cloud version extra ["springCloudVersion"] = "Hoxton.SR8" repositories {/ / Local maven maven { Url = uri ("http://192.168.1.150:8081/repository/maven-public/") credentials {username =" admin "password =" admin "}} maven {url = uri (" https://repo.spring.io/milestone")}) Jcenter {content {/ / just allow to include kotlinx projects / / detekt needs' kotlinx-html' for the html report includeGroup ("org.jetbrains.kotlinx")}}.
Application
/ * goods and services * / @ SpringBootApplicationclass ProductApplication/** * Program entry * / fun main (args: Array) {runApplication (* args)}
This is the automatically generated program entry and does not need to be modified.
Write controller
@ RestController@RequestMapping ("v2/test") class SpuManagerController (val xService: XService) {@ PostMapping (") fun addSpu (@ RequestBody addXxVO: AddXxVO): Long {return xrService.addX (addXxVO)}}
This is a controller that injects dependencies through the constructor.
JPA
Entity class:
@ Entity (name = "table_name") @ DynamicInsert / / do not insert null@DynamicUpdateclass XxPO (var code:String, var name:String, var createDate:Date?=null, var updatedDate: Date?=null, @ Id @ GeneratedValue (strategy = GenerationType.IDENTITY) var id:Long?=null)
Repository:
Interface XxRepository: CrudRepository
Since there is no custom method, you can define an interface directly.
Service
Slightly
Unit testing
@ SpringBootTest@AutoConfigureMockMvc@Transactionalclass SpuManagerControllerTests @ Autowired constructor (val mockMvc: MockMvc, val xxRepository: XxRepository) {@ Test fun testAddSpu () {val vo= AddXxVO ("test_code") "test_name") mockMvc.perform (MockMvcRequestBuilders.post ("/ v2/test") .contentType (MediaType.APPLICATION_JSON) .content (JSON.toJSONString (vo)) .andExpect {status () .is2xxSuccessful} .andRetur n () .response. ContentAsString .apply {val id = this.toLong () val result = xxRepository .findById (id) assert (result.isPresent)}
Note that the class corresponding to @ Test is org.junit.jupiter.api.Test
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