SpringBoot整合Scala构建Web服务的方法

2023-08-27 14:39:04 250

今天我们尝试SpringBoot整合Scala，并决定建立一个非常简单的SpringBoot微服务，使用Scala作为编程语言进行编码构建。

创建项目

初始化项目

mvnarchetype:generate-DgroupId=com.edurt.ssi-DartifactId=springboot-scala-integration-DarchetypeArtifactId=maven-archetype-quickstart-Dversion=1.0.0-DinteractiveMode=false

修改pom.xml增加java和scala的支持



4.0.0
com.edurt.ssi
springboot-scala-integration
jar
1.0.0

springboot-scala-integration
SpringBootScalaIntegrationisaopensourcespringboot,scalaintegrationexample.


org.springframework.boot
spring-boot-starter-parent
2.1.3.RELEASE




UTF-8
UTF-8
1.8
1.8
1.8

2.12.1

3.1.3




org.scala-lang
scala-library
${dependency.scala.version}


org.springframework.boot
spring-boot-starter-web




${project.basedir}/src/main/scala
${project.basedir}/src/test/scala


net.alchim31.maven
scala-maven-plugin
${plugin.maven.scala.version}



compile
testCompile





org.springframework.boot
spring-boot-maven-plugin

一个简单的应用类

packagecom.edurt.ssi

importorg.springframework.boot.SpringApplication
importorg.springframework.boot.autoconfigure.SpringBootApplication

@SpringBootApplication
classSpringBootScalaIntegration

objectSpringBootScalaIntegrationextendsApp{

SpringApplication.run(classOf[SpringBootScalaIntegration])

}

添加RestAPI接口功能

创建一个HelloControllerRestAPI接口,我们只提供一个简单的get请求获取hello,scala输出信息

packagecom.edurt.ssi.controller

importorg.springframework.web.bind.annotation.{GetMapping,RestController}

@RestController
classHelloController{

@GetMapping(value=Array("hello"))
defhello():String={
return"hello,scala"
}

}

修改SpringBootScalaIntegration文件增加以下设置扫描路径

@ComponentScan(value=Array(
"com.edurt.ssi.controller"
))

添加页面功能

修改pom.xml文件增加以下页面依赖



org.springframework.boot
spring-boot-starter-mustache

修改SpringBootScalaIntegration文件增加以下设置扫描路径ComponentScan的value字段中

"com.edurt.ssi.view"

在src/main/resources路径下创建templates文件夹

在templates文件夹下创建一个名为hello.mustache的页面文件

Hello,Scala

创建页面转换器HelloView

packagecom.edurt.ssi.view

importorg.springframework.stereotype.Controller
importorg.springframework.web.bind.annotation.GetMapping

@Controller
classHelloView{

@GetMapping(value=Array("hello_view"))
defhelloView:String={
return"hello";
}

}

浏览器访问http://localhost:8080/hello_view即可看到页面内容

添加数据持久化功能

修改pom.xml文件增加以下依赖(由于测试功能我们使用h2内存数据库)



org.springframework.boot
spring-boot-starter-data-jpa


com.h2database
h2
runtime

修改SpringBootScalaIntegration文件增加以下设置扫描model路径

@EntityScan(value=Array(
"com.edurt.ssi.model"
))

创建User实体

packagecom.edurt.ssi.model

importjavax.persistence.{Entity,GeneratedValue,Id}

@Entity
classUserModel{

@Id
@GeneratedValue
varid:Long=0

varname:String=null

}

创建UserSupportdao数据库操作工具类

packagecom.edurt.ssi.support

importcom.edurt.ssi.model.UserModel
importorg.springframework.data.repository.PagingAndSortingRepository

traitUserSupportextendsPagingAndSortingRepository[UserModel,Long]{

}

创建UserService服务类

packagecom.edurt.ssi.service

importcom.edurt.ssi.model.UserModel

traitUserService{

/**
*savemodeltodb
*/
defsave(model:UserModel):UserModel;

}

创建UserServiceImpl实现类

packagecom.edurt.ssi.service

importcom.edurt.ssi.model.UserModel
importcom.edurt.ssi.support.UserSupport
importorg.springframework.beans.factory.annotation.Autowired
importorg.springframework.stereotype.Service

@Service(value="userService")
classUserServiceImpl@Autowired()(
valuserSupport:UserSupport
)extendsUserService{

/**
*savemodeltodb
*/
overridedefsave(model:UserModel):UserModel={
returnthis.userSupport.save(model)
}

}

创建用户UserController进行持久化数据

packagecom.edurt.ssi.controller

importcom.edurt.ssi.model.UserModel
importcom.edurt.ssi.service.UserService
importorg.springframework.beans.factory.annotation.Autowired
importorg.springframework.web.bind.annotation.{PathVariable,PostMapping,RequestMapping,RestController}

@RestController
@RequestMapping(value=Array("user"))
classUserController@Autowired()(
valuserService:UserService
){

@PostMapping(value=Array("save/{name}"))
defsave(@PathVariablename:String):Long={
valuserModel={
newUserModel()
}
userModel.name=name
returnthis.userService.save(userModel).id
}

}

使用控制台窗口执行以下命令保存数据

curl-XPOSThttp://localhost:8080/user/save/qianmoQ

收到返回结果

1

表示数据保存成功

增加数据读取渲染功能

修改UserService增加以下代码

/**
*getallmodel
*/
defgetAll(page:Pageable):Page[UserModel]

修改UserServiceImpl增加以下代码

/**
*getallmodel
*/
overridedefgetAll(page:Pageable):Page[UserModel]={
returnthis.userSupport.findAll(page)
}

修改UserController增加以下代码

@GetMapping(value=Array("list"))
defget():Page[UserModel]=this.userService.getAll(PageRequest.of(0,10))

创建UserView文件渲染User数据

packagecom.edurt.ssi.view

importcom.edurt.ssi.service.UserService
importorg.springframework.beans.factory.annotation.Autowired
importorg.springframework.data.domain.PageRequest
importorg.springframework.stereotype.Controller
importorg.springframework.ui.Model
importorg.springframework.web.bind.annotation.GetMapping

@Controller
classUserView@Autowired()(
privatevaluserService:UserService
){

@GetMapping(value=Array("user_view"))
defhelloView(model:Model):String={
model.addAttribute("users",this.userService.getAll(PageRequest.of(0,10)))
return"user"
}

}

创建user.mustache文件渲染数据(自行解析返回数据即可)

{{users}}

浏览器访问http://localhost:8080/user_view即可看到页面内容

增加单元功能

修改pom.xml文件增加以下依赖



org.springframework.boot
spring-boot-starter-test
test


junit
junit


org.mockito
mockito-core




org.junit.jupiter
junit-jupiter-engine
test

创建UserServiceTest文件进行测试UserService功能

packagecom.edurt.ssi

importcom.edurt.ssi.service.UserService
importorg.junit.jupiter.api.Test
importorg.springframework.beans.factory.annotation.Autowired
importorg.springframework.boot.test.context.SpringBootTest
importorg.springframework.data.domain.PageRequest

@SpringBootTest(webEnvironment=SpringBootTest.WebEnvironment.RANDOM_PORT)
classUserServiceTest@Autowired()(
privatevaluserService:UserService){

@Test
def`getall`(){
println(">>Assertblogpagetitle,contentandstatuscode")
valentity=this.userService.getAll(PageRequest.of(0,1))
print(entity.getTotalPages)
}

}

源码地址：GitHub

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。

SpringBoot整合Scala构建Web服务的方法

Hello,Scala

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