Scala篇：整合springboot

项目结构 pom文件

<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> <scala.version>2.11.8</scala.version> <mysql.version>5.1.44</mysql.version> <mybatis.spring.version>1.3.3</mybatis.spring.version> </properties> <dependencies> <dependency> <groupId>org.scala-lang</groupId> <artifactId>scala-library</artifactId> <version>${scala.version}</version> </dependency> <!--数据库连接池--> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.10</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>${mybatis.spring.version}</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.scala-tools</groupId> <artifactId>maven-scala-plugin</artifactId> <executions> <execution> <goals> <goal>compile</goal> <goal>testCompile</goal> </goals> </execution> </executions> <configuration> <recompileMode>incremental</recompileMode> <scalaVersion>${scala.version}</scalaVersion> <launchers> <launcher> <id>app</id> <mainClass>com.staryea.scala.ScalaApplication</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> </plugins> </build>

启动类

/** * @author: hs * @Date: 2019/10/30 14:51 * @Description: springboot 启动类 */ @SpringBootApplication class AppConfig object ScalaApplication extends App { SpringApplication.run(classOf[AppConfig]) }

Dao层

/** * @author: hs * @Date: 2019/10/30 16:52 * @Description: */ @Mapper trait UserMapper { def getUserInfo(@Param("id") id: Int):User }

mapper文件(UserMapper)

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.staryea.scala.dao.UserMapper"> <select id="getUserInfo" resultType="com.staryea.scala.entity.User"> select * from `user` <where> <if test="id != null and id !='' "> id=#{id} </if> </where> </select> </mapper>

Service层

/** * @author: hs * @Date: 2019/10/30 18:04 * @Description: */ trait UserService { def getUserInfo(id:Int):User }

实现类

/** * @author: hs * @Date: 2019/10/30 18:05 * @Description: */ @Service class UserServiceImpl @Autowired()(val userMapper: UserMapper) extends UserService { override def getUserInfo(id: Int): User = { userMapper.getUserInfo(id) } }

controller层

/** * @author: hs * @Date: 2019/10/30 15:20 * @Description: */ @Controller @RequestMapping(Array("/api")) class UserController @Autowired()(userService: UserService) { @ResponseBody @GetMapping(Array("/userInfo/{id}")) def getUserList(@PathVariable("id") id: Int): User = { val user: User = userService.getUserInfo(id) println(user.createTime) println(user.description) println(user.id) println(user.userName) user } }

YML文件

server: port: 1517 spring: application: name: spingboot-scala datasource: driver-class-name: com.mysql.jdbc.Driver url: jdbc:mysql://localhost:3306/master?useSSL=false&characterEncoding=utf8 username: root password: root type: com.alibaba.druid.pool.DruidDataSource druid: initialSize: 5 # 初始化大小，最小，最大 minIdle: 5 maxActive: 20 maxWait: 60000 # 配置获取连接等待超时的时间 timeBetweenEvictionRunsMillis: 60000 # 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 minEvictableIdleTimeMillis: 30000 # 配置一个连接在池中最小生存的时间，单位是毫秒 validationQuery: select 'x' testWhileIdle: true testOnBorrow: false testOnReturn: false poolPreparedStatements: true # 打开PSCache，并且指定每个连接上PSCache的大小 maxPoolPreparedStatementPerConnectionSize: 20 filters: stat,wall,slf4j # 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙 # 通过connectProperties属性来打开mergeSql功能；慢SQL记录 connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000 stat-view-servlet: login-username: tianyan login-password: J&&Hjh7*mM mybatis: mapper-locations: - classpath:mapper/*Mapper.xml configuration: map-underscore-to-camel-case: true