今天我們嘗試spring boot整合scala，并決定建立一個非常簡單的spring boot微服務，使用scala作為編程語言進行編碼構(gòu)建。
創(chuàng)建項目
初始化項目
復制代碼 代碼如下:
mvn archetype: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
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<project xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelversion>4.0.0</modelversion> <groupid>com.edurt.ssi</groupid> <artifactid>springboot-scala-integration</artifactid> <packaging>jar</packaging> <version>1.0.0</version> <name>springboot-scala-integration</name> <description>springboot scala integration is a open source springboot, scala integration example.</description> <parent> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-parent</artifactid> <version>2.1.3.release</version> <relativepath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceencoding>utf-8</project.build.sourceencoding> <project.reporting.outputencoding>utf-8</project.reporting.outputencoding> <java.version>1.8</java.version> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> <!-- dependency config --> <dependency.scala.version>2.12.1</dependency.scala.version> <!-- plugin config --> <plugin.maven.scala.version>3.1.3</plugin.maven.scala.version> </properties> <dependencies> <dependency> <groupid>org.scala-lang</groupid> <artifactid>scala-library</artifactid> <version>${dependency.scala.version}</version> </dependency> <dependency> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-web</artifactid> </dependency> </dependencies> <build> <sourcedirectory>${project.basedir}/src/main/scala</sourcedirectory> <testsourcedirectory>${project.basedir}/src/test/scala</testsourcedirectory> <plugins> <plugin> <groupid>net.alchim31.maven</groupid> <artifactid>scala-maven-plugin</artifactid> <version>${plugin.maven.scala.version}</version> <executions> <execution> <goals> <goal>compile</goal> <goal>testcompile</goal> </goals> </execution> </executions> </plugin> <plugin> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-maven-plugin</artifactid> </plugin> </plugins> </build></project> |
一個簡單的應用類
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package com.edurt.ssiimport org.springframework.boot.springapplicationimport org.springframework.boot.autoconfigure.springbootapplication@springbootapplicationclass springbootscalaintegrationobject springbootscalaintegration extends app{ springapplication.run(classof[springbootscalaintegration])} |
添加rest api接口功能
創(chuàng)建一個hellocontroller rest api接口,我們只提供一個簡單的get請求獲取hello,scala輸出信息
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package com.edurt.ssi.controllerimport org.springframework.web.bind.annotation.{getmapping, restcontroller}@restcontrollerclass hellocontroller { @getmapping(value = array("hello")) def hello(): string = { return "hello,scala" }} |
修改springbootscalaintegration文件增加以下設置掃描路徑
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@componentscan(value = array( "com.edurt.ssi.controller")) |
添加頁面功能
修改pom.xml文件增加以下頁面依賴
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<!-- mustache --><dependency> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-mustache</artifactid></dependency> |
修改springbootscalaintegration文件增加以下設置掃描路徑componentscan的value字段中
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"com.edurt.ssi.view" |
在src/main/resources路徑下創(chuàng)建templates文件夾
在templates文件夾下創(chuàng)建一個名為hello.mustache的頁面文件
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<h1>hello, scala</h1> |
創(chuàng)建頁面轉(zhuǎn)換器helloview
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package com.edurt.ssi.viewimport org.springframework.stereotype.controllerimport org.springframework.web.bind.annotation.getmapping@controllerclass helloview { @getmapping(value = array("hello_view")) def helloview: string = { return "hello"; }} |
瀏覽器訪問http://localhost:8080/hello_view即可看到頁面內(nèi)容
添加數(shù)據(jù)持久化功能
修改pom.xml文件增加以下依賴(由于測試功能我們使用h2內(nèi)存數(shù)據(jù)庫)
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<!-- data jpa and db --><dependency> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-data-jpa</artifactid></dependency><dependency> <groupid>com.h2database</groupid> <artifactid>h2</artifactid> <scope>runtime</scope></dependency> |
修改springbootscalaintegration文件增加以下設置掃描model路徑
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@entityscan(value = array( "com.edurt.ssi.model")) |
創(chuàng)建user實體
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package com.edurt.ssi.modelimport javax.persistence.{entity, generatedvalue, id}@entityclass usermodel { @id @generatedvalue var id: long = 0 var name: string = null} |
創(chuàng)建usersupport dao數(shù)據(jù)庫操作工具類
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package com.edurt.ssi.supportimport com.edurt.ssi.model.usermodelimport org.springframework.data.repository.pagingandsortingrepositorytrait usersupport extends pagingandsortingrepository[usermodel, long] {} |
創(chuàng)建userservice服務類
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package com.edurt.ssi.serviceimport com.edurt.ssi.model.usermodeltrait userservice { /** * save model to db */ def save(model: usermodel): usermodel;} |
創(chuàng)建userserviceimpl實現(xiàn)類
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package com.edurt.ssi.serviceimport com.edurt.ssi.model.usermodelimport com.edurt.ssi.support.usersupportimport org.springframework.beans.factory.annotation.autowiredimport org.springframework.stereotype.service@service(value = "userservice")class userserviceimpl @autowired() ( val usersupport: usersupport ) extends userservice { /** * save model to db */ override def save(model: usermodel): usermodel = { return this.usersupport.save(model) }} |
創(chuàng)建用戶usercontroller進行持久化數(shù)據(jù)
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package com.edurt.ssi.controllerimport com.edurt.ssi.model.usermodelimport com.edurt.ssi.service.userserviceimport org.springframework.beans.factory.annotation.autowiredimport org.springframework.web.bind.annotation.{pathvariable, postmapping, requestmapping, restcontroller}@restcontroller@requestmapping(value = array("user"))class usercontroller @autowired()( val userservice: userservice ) { @postmapping(value = array("save/{name}")) def save(@pathvariable name: string): long = { val usermodel = { new usermodel() } usermodel.name = name return this.userservice.save(usermodel).id }} |
使用控制臺窗口執(zhí)行以下命令保存數(shù)據(jù)
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curl -x post http://localhost:8080/user/save/qianmoq |
收到返回結(jié)果
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表示數(shù)據(jù)保存成功
增加數(shù)據(jù)讀取渲染功能
修改userservice增加以下代碼
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/** * get all model */def getall(page: pageable): page[usermodel] |
修改userserviceimpl增加以下代碼
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/** * get all model */override def getall(page: pageable): page[usermodel] = { return this.usersupport.findall(page)} |
修改usercontroller增加以下代碼
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@getmapping(value = array("list"))def get(): page[usermodel] = this.userservice.getall(pagerequest.of(0, 10)) |
創(chuàng)建userview文件渲染user數(shù)據(jù)
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package com.edurt.ssi.viewimport com.edurt.ssi.service.userserviceimport org.springframework.beans.factory.annotation.autowiredimport org.springframework.data.domain.pagerequestimport org.springframework.stereotype.controllerimport org.springframework.ui.modelimport org.springframework.web.bind.annotation.getmapping@controllerclass userview @autowired()( private val userservice: userservice ) { @getmapping(value = array("user_view")) def helloview(model: model): string = { model.addattribute("users", this.userservice.getall(pagerequest.of(0, 10))) return "user" }} |
創(chuàng)建user.mustache文件渲染數(shù)據(jù)(自行解析返回數(shù)據(jù)即可)
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{{users}} |
瀏覽器訪問http://localhost:8080/user_view即可看到頁面內(nèi)容
增加單元功能
修改pom.xml文件增加以下依賴
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<!-- test --><dependency> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-test</artifactid> <scope>test</scope> <exclusions> <exclusion> <groupid>junit</groupid> <artifactid>junit</artifactid> </exclusion> <exclusion> <groupid>org.mockito</groupid> <artifactid>mockito-core</artifactid> </exclusion> </exclusions></dependency><dependency> <groupid>org.junit.jupiter</groupid> <artifactid>junit-jupiter-engine</artifactid> <scope>test</scope></dependency> |
創(chuàng)建userservicetest文件進行測試userservice功能
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package com.edurt.ssiimport com.edurt.ssi.service.userserviceimport org.junit.jupiter.api.testimport org.springframework.beans.factory.annotation.autowiredimport org.springframework.boot.test.context.springboottestimport org.springframework.data.domain.pagerequest@springboottest(webenvironment = springboottest.webenvironment.random_port)class userservicetest @autowired()( private val userservice: userservice) { @test def `get all`() { println(">> assert blog page title, content and status code") val entity = this.userservice.getall(pagerequest.of(0, 1)) print(entity.gettotalpages) }} |
源碼地址：github
以上就是本文的全部內(nèi)容，希望對大家的學習有所幫助，也希望大家多多支持服務器之家。
原文鏈接：https://segmentfault.com/a/1190000018357979
