Springboot與scala編寫第一個web程式
阿新 • • 發佈：2020-08-07
1、pom.xml檔案
<?xml version="1.0" encoding="UTF-8"?> <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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>View Code<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.5.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.demo</groupId> <artifactId>spark</artifactId> <version>0.0.1-SNAPSHOT</version> <name>spark</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> <scala.version>2.11.8</scala.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> <!--新增Scala依賴--> <dependency> <groupId>org.scala-lang</groupId> <artifactId>scala-library</artifactId> <version>${scala.version}</version> </dependency> </dependencies> <build> <pluginManagement> <plugins> <!-- 編譯scala的外掛 --> <plugin> <groupId>net.alchim31.maven</groupId> <artifactId>scala-maven-plugin</artifactId> <version>3.2.2</version> </plugin> <!-- 編譯java的外掛 --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.5.1</version> </plugin> </plugins> </pluginManagement> <plugins> <plugin> <groupId>org.scala-tools</groupId> <artifactId>maven-scala-plugin</artifactId> <executions> <execution> <goals> <goal>compile</goal> <goal>testCompile</goal> </goals> </execution> </executions> <configuration> <recompileMode>incremental</recompileMode> <scalaVersion>${scala.version}</scalaVersion> <launchers> <launcher> <id>app</id> <mainClass>com.web.SparkApplication</mainClass> <args> <arg>-deprecation</arg> </args> <jvmArgs> <jvmArg>-Xms256m</jvmArg> <jvmArg>-Xmx2048m</jvmArg> </jvmArgs> </launcher> </launchers> </configuration> </plugin> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <executions> <execution> <phase>compile</phase> <goals> <goal>compile</goal> </goals> </execution> </executions> </plugin> <!-- 打jar外掛 --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <version>2.4.3</version> <executions> <execution> <phase>package</phase> <goals> <goal>shade</goal> </goals> <configuration> <filters> <filter> <artifact>*:*</artifact> <excludes> <exclude>META-INF/*.SF</exclude> <exclude>META-INF/*.DSA</exclude> <exclude>META-INF/*.RSA</exclude> </excludes> </filter> </filters> </configuration> </execution> </executions> </plugin> </plugins> </build> <profiles> <profile> <id>dev</id> <properties> <activatedProperties>dev</activatedProperties> </properties> <!-- 這裡代表預設使用dev環境配置檔案 --> <activation> <activeByDefault>true</activeByDefault> </activation> </profile> <profile> <id>test</id> <properties> <activatedProperties>test</activatedProperties> </properties> </profile> <profile> <id>prod</id> <properties> <activatedProperties>prod</activatedProperties> </properties> </profile> </profiles> </project>
2、啟動檔案類，包含兩個
a）AppConfig.java
package com.web import org.springframework.boot.autoconfigure.SpringBootApplication import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter /** * @author yangwj * @date 2020/8/7 10:24 */ @SpringBootApplication(scanBasePackages = Array("com.web.*")) class AppConfig extends WebMvcConfigurerAdapter { }
b）SparkApplication.java
package com.web import org.springframework.boot.SpringApplication /** * @author yangwj * @date 2020/8/7 10:25 */ object SparkApplication extends App { SpringApplication.run(classOf[AppConfig]) }
3、domain層，實體物件，Person.java
package com.web.domain import javax.persistence.{Entity, GeneratedValue, Id, Table} import scala.beans.BeanProperty /** * @author yangwj * @date 2020/8/7 10:02 */ @Entity @Table class Person { @Id @GeneratedValue @BeanProperty var id:Integer = _ @BeanProperty var name:String = _ @BeanProperty var sex:String = _ }View Code
4、service和serviceImpl層
a) PersonRepository.java
package com.web.service import com.web.domain.Person import org.springframework.data.repository.CrudRepository /** * @author yangwj * @date 2020/8/7 10:06 */ trait PersonRepository extends CrudRepository[Person,Integer]{ }
b）PersonServiceImpl.java
package com.web.service.impl import com.web.domain.Person import com.web.service.PersonRepository import org.springframework.beans.factory.annotation.Autowired import org.springframework.stereotype.Service import org.springframework.transaction.annotation.Transactional /** * @author yangwj * @date 2020/8/7 10:07 */ @Service class PersonServiceImpl @Autowired()(personRepository: PersonRepository) { /** * 儲存 * * @param person 儲存物件 * @return Person */ @Transactional def save(person: Person): Person = { personRepository.save(person) } /** * 根據Id查詢 * @param id 查詢引數 * @return Person */ def selectPersonById(id: Integer): Person = { personRepository.findById(id).get() } }
5、controller層：PersonController.java
package com.web.controller import com.web.domain.Person import com.web.service.impl.PersonServiceImpl import org.springframework.beans.factory.annotation.Autowired import org.springframework.web.bind.annotation.{GetMapping, PostMapping, RequestBody, RequestMapping, RequestParam, RestController} /** * @author yangwj * @date 2020/8/7 10:09 */ @RestController @RequestMapping(Array("/v1/person")) class PersonController @Autowired()(personService: PersonServiceImpl) { @PostMapping def save(@RequestBody person: Person): Person = { personService.save(person) } @GetMapping def selectPersonById(@RequestParam id: Integer): Person = { personService.selectPersonById(id) } }
6、建立資料庫
/* Navicat MySQL Data Transfer Source Server : 本機 Source Server Version : 50726 Source Host : localhost:3306 Source Database : spark Target Server Type : MYSQL Target Server Version : 50726 File Encoding : 65001 Date: 2020-08-07 10:58:25 */ SET FOREIGN_KEY_CHECKS=0; -- ---------------------------- -- Table structure for person -- ---------------------------- DROP TABLE IF EXISTS `person`; CREATE TABLE `person` ( `id` int(11) DEFAULT NULL, `name` varchar(12) DEFAULT NULL, `sex` varchar(2) DEFAULT NULL ) ENGINE=InnoDB DEFAULT CHARSET=utf8; -- ---------------------------- -- Records of person -- ---------------------------- INSERT INTO `person` VALUES ('1', '1', '1');View Code
7、執行：http://localhost:7777/v1/person?id=1
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