欧美bbbwbbbw肥妇,免费乱码人妻系列日韩,一级黄片

使用kotlin集成springboot開(kāi)發(fā)的超詳細(xì)教程

 更新時(shí)間：2021年09月02日 16:07:12   作者：安靜的夜灬  
目前大多數(shù)都在使用java集成 springboot進(jìn)行開(kāi)發(fā)，本文演示僅僅將 java換成 kotlin，其他不變的情況下進(jìn)行開(kāi)發(fā),需要的朋友可以參考下

目前大多數(shù)都在使用java集成 springboot進(jìn)行開(kāi)發(fā)，本文演示僅僅將 java換成 kotlin，其他不變的情況下進(jìn)行開(kāi)發(fā)。

一、安裝支持插件

在 idea中安裝 kotlin插件（大多數(shù)情況下會(huì)默認(rèn)安裝了）

安裝插件

二、maven配置 注意

kotlin目前不支持 lombok所以不能使用或引用 lombok相關(guān)的插件或依賴包，下面是一個(gè)排除示例，同時(shí)也不支持 maven-enforcer-plugin

<dependency>
            <groupId>com.ayouran.common</groupId>
            <artifactId>a-common</artifactId>
            <version>1.0.0-SNAPSHOT</version>
            <exclusions>
                 <exclusion>
                       <groupId>org.projectlombok</groupId>
                       <artifactId>lombok</artifactId>
                 </exclusion>
            </exclusions>
</dependency>

maven的屬性配置

<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>
        <kotlin.version>1.3.21</kotlin.version>
        <!--增量編譯-->
        <kotlin.compiler.incremental>true</kotlin.compiler.incremental>
        <!--關(guān)閉協(xié)程編譯警告-->
        <experimentalCoroutines>enable</experimentalCoroutines>
        <spring-boot.version>2.2.4.RELEASE</spring-boot.version>
        <spring-cloud.version>Hoxton.SR1</spring-cloud.version>
        <swagger.version>2.7.0</swagger.version>
        <main.class>com.lc.github.KotlinDemoApplication</main.class>
        <querydsl.version>4.2.1</querydsl.version>
        <mapstruct.version>1.3.1.Final</mapstruct.version>
    </properties>

必要的依賴

<dependencies>
       <!--反射支持包，不需要可以去掉-->
        <dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-reflect</artifactId>
            <version>${kotlin.version}</version>
        </dependency>
     <!--jdk8下的 kotlin支持包-->
        <dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-stdlib-jdk8</artifactId>
            <version>${kotlin.version}</version>
        </dependency>
    </dependencies>

編譯部分

 <build>
        <plugins>
            <plugin>
                <groupId>org.jetbrains.kotlin</groupId>
                <artifactId>kotlin-maven-plugin</artifactId>
                <configuration>
                    <correctErrorTypes>true</correctErrorTypes>
                    <languageVersion>${kotlin.language.version}</languageVersion>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>org.jetbrains.kotlin</groupId>
                        <artifactId>kotlin-maven-allopen</artifactId>
                        <version>${kotlin.version}</version>
                    </dependency>
                </dependencies>
                <executions>
                    <execution>
                        <id>kapt</id>
                        <goals>
                            <goal>kapt</goal>
                        </goals>
                        <configuration>
                            <correctErrorTypes>true</correctErrorTypes>
                            <sourceDirs>
                                <sourceDir>src/main/kotlin</sourceDir>
                                <sourceDir>src/main/java</sourceDir>
                            </sourceDirs>
                            <annotationProcessorPaths>
                                <annotationProcessorPath>
                                    <groupId>com.google.dagger</groupId>
                                    <artifactId>dagger-compiler</artifactId>
                                    <version>2.9</version>
                                </annotationProcessorPath>
                                <annotationProcessorPath>
                                    <groupId>com.querydsl</groupId>
                                    <artifactId>querydsl-apt</artifactId>
                                    <version>${querydsl.version}</version>
                                    <classifier>jpa</classifier>
                                </annotationProcessorPath>
                                <annotationProcessorPath>
                                    <groupId>org.mapstruct</groupId>
                                    <artifactId>mapstruct-processor</artifactId>
                                    <version>${mapstruct.version}</version>
                                </annotationProcessorPath>
                            </annotationProcessorPaths>
                        </configuration>
                    </execution>
                    <execution>
                        <id>compile</id>
                        <goals>
                            <goal>compile</goal>
                        </goals>
                        <configuration>
                            <sourceDirs>
                                <sourceDir>src/main/kotlin</sourceDir>
                                <sourceDir>src/main/java</sourceDir>
                            </sourceDirs>
                        </configuration>
                    </execution>
                    <execution>
                        <id>test-kapt</id>
                        <goals>
                            <goal>test-kapt</goal>
                        </goals>
                        <configuration>
                            <sourceDirs>
                                <sourceDir>src/test/kotlin</sourceDir>
                                <sourceDir>src/test/java</sourceDir>
                            </sourceDirs>
                            <annotationProcessorPaths>
                                <annotationProcessorPath>
                                    <groupId>com.google.dagger</groupId>
                                    <artifactId>dagger-compiler</artifactId>
                                    <version>2.9</version>
                                </annotationProcessorPath>
                                <annotationProcessorPath>
                                    <groupId>com.querydsl</groupId>
                                    <artifactId>querydsl-apt</artifactId>
                                    <version>${querydsl.version}</version>
                                    <classifier>jpa</classifier>
                                </annotationProcessorPath>
                                <annotationProcessorPath>
                                    <groupId>org.mapstruct</groupId>
                                    <artifactId>mapstruct-processor</artifactId>
                                    <version>${mapstruct.version}</version>
                                </annotationProcessorPath>
                            </annotationProcessorPaths>
                        </configuration>
                    </execution>
                    <execution>
                        <id>test-compile</id>
                        <goals>
                            <goal>test-compile</goal>
                        </goals>
                        <configuration>
                            <sourceDirs>
                                <sourceDir>src/test/kotlin</sourceDir>
                                <sourceDir>src/test/java</sourceDir>
                                <sourceDir>target/generated-sources/kapt/test</sourceDir>
                            </sourceDirs>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <proc>none</proc>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                    <annotationProcessorPaths>
                        <path>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                            <version>${lombok.version}</version>
                        </path>
                        <path>
                            <groupId>org.mapstruct</groupId>
                            <artifactId>mapstruct-processor</artifactId>
                            <version>${mapstruct.version}</version>
                        </path>
                    </annotationProcessorPaths>
                    <compilerArgs>
                        <arg>-Amapstruct.suppressGeneratorTimestamp=true</arg>
                        <arg>-Amapstruct.defaultComponentModel=spring</arg>
                    </compilerArgs>
                </configuration>
                <executions>
                    <!-- Replacing default-compile as it is treated specially by maven -->
                    <execution>
                        <id>default-compile</id>
                        <phase>none</phase>
                    </execution>
                    <!-- Replacing default-testCompile as it is treated specially by maven -->
                    <execution>
                        <id>default-testCompile</id>
                        <phase>none</phase>
                    </execution>
                    <execution>
                        <id>java-compile</id>
                        <phase>compile</phase>
                        <goals>
                            <goal>compile</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>java-test-compile</id>
                        <phase>test-compile</phase>
                        <goals>
                            <goal>testCompile</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>2.6</version>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                        <configuration>
                            <archive>
                                <manifest>
                                    <mainClass>${main.class}</mainClass>
                                </manifest>
                            </archive>
                            <descriptorRefs>
                                <descriptorRef>jar-with-dependencies</descriptorRef>
                            </descriptorRefs>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

有 java與 kotlin混合的情況，在上面的 <plugins>下加入下面的編譯插件

<plugin>
                            <groupId>org.apache.maven.plugins</groupId>
                            <artifactId>maven-compiler-plugin</artifactId>
                            <version>3.8.1</version>
                            <configuration>
                                <proc>none</proc>
                                <source>${java.version}</source>
                                <target>${java.version}</target>
                                <annotationProcessorPaths>
                                    <path>
                                        <groupId>org.mapstruct</groupId>
                                        <artifactId>mapstruct-processor</artifactId>
                                        <version>${mapstruct.version}</version>
                                    </path>
                                </annotationProcessorPaths>
                                <compilerArgs>
                                    <arg>-Amapstruct.suppressGeneratorTimestamp=true</arg>
                                    <arg>-Amapstruct.defaultComponentModel=spring</arg>
                                </compilerArgs>
                            </configuration>
                            <executions>
                                <!-- Replacing default-compile as it is treated specially by maven -->
                                <execution>
                                    <id>default-compile</id>
                                    <phase>none</phase>
                                </execution>
                                <!-- Replacing default-testCompile as it is treated specially by maven -->
                                <execution>
                                    <id>default-testCompile</id>
                                    <phase>none</phase>
                                </execution>
                                <execution>
                                    <id>java-compile</id>
                                    <phase>compile</phase>
                                    <goals>
                                        <goal>compile</goal>
                                    </goals>
                                </execution>
                                <execution>
                                    <id>java-test-compile</id>
                                    <phase>test-compile</phase>
                                    <goals>
                                        <goal>testCompile</goal>
                                    </goals>
                                </execution>
                            </executions>
                        </plugin>

此 maven配置集成了 querydsl、mapstruct、dagger2的編譯，基本上能滿足常規(guī)的使用

三、創(chuàng)建入口函數(shù)類

創(chuàng)建入口函數(shù)

四、編寫(xiě)入口函數(shù)

springboot的啟動(dòng)方法及 swagger的配置

@EnableAsync
@EnableSwagger2
@EnableScheduling
@SpringBootApplication
class KotlinDemoApplication : CommandLineRunner {
    companion object {
        @JvmStatic
        fun main(args: Array<String>) {
            SpringApplication.run(KotlinDemoApplication::class.java, *args)
        }
    }

    @Bean
    fun api(): Docket {
        return Docket(DocumentationType.SWAGGER_2)
                .ignoredParameterTypes(Session::class.java)
                .select()
//                .apis(RequestHandlerSelectors.any())
                .apis(RequestHandlerSelectors.basePackage("com.ayouran.flow.controllers"))
                .paths(PathSelectors.any())
                .build()
                .apiInfo(ApiInfoBuilder()
                        .description("ayouram-flow相關(guān)API")
                        .title("ayouram-flow")
                        .version("1.0")
                        .build())
                .pathMapping("/")
    }

    override fun run(vararg args: String?) {
        println("*************************** ok ***********************************")
    }
}

五、創(chuàng)建數(shù)據(jù)庫(kù)對(duì)象

import com.fasterxml.jackson.annotation.JsonFormat
import org.hibernate.annotations.DynamicInsert
import org.hibernate.annotations.DynamicUpdate
import java.util.*
import javax.persistence.*

/****
 * 設(shè)備流量規(guī)則
 */
@Entity
@Table(name = "device_rules",
        indexes = [Index(name = "device_no", columnList = "device_no"),
            Index(name = "rules_no", columnList = "rules_no"),
            Index(name = "deleted", columnList = "deleted")],
        uniqueConstraints = [UniqueConstraint(name = "device_no_rules_no", columnNames = ["device_no", "rules_no"])])
@DynamicUpdate
@DynamicInsert
class DeviceRules {

    @Id
    @Column(name = "id", columnDefinition = "bigint(20) COMMENT 'ID,自增'")
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    var id: Long? = null

    @Column(name = "device_no", columnDefinition = "varchar(18) COMMENT '設(shè)備編號(hào)'")
    var deviceNo: String? = null

    @Column(name = "rules_no", columnDefinition = "varchar(18) COMMENT '規(guī)則編號(hào)'")
    var rulesNo: String? = null

    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
    @Column(name = "create_at", columnDefinition = "datetime COMMENT '創(chuàng)建時(shí)間'")
    var createAt: Date? = null

    @Column(name = "update_at", columnDefinition = "datetime COMMENT '修改時(shí)間'")
    var updateAt: Date? = null

    /**
     * 觸發(fā)jpa update代碼需要執(zhí)行的邏輯
     */
    @PreUpdate
    fun preUpdate() {
        updateAt = Date()
    }

    /**
     * 自動(dòng)設(shè)置必要字段的值
     */
    @PrePersist
    fun prePersist() {
        updateAt = Date()
        createAt = updateAt
        deleted = BaseEnum.NOT_REMOVE.index
    }
}

注解使用了 hibernate的功能主要用于自動(dòng)創(chuàng)建/更新表結(jié)構(gòu)以及索引的生成，如果需要 mybatis版本的，只需要去掉這里面的注釋就好。

六、創(chuàng)建倉(cāng)庫(kù)操作接口

基于 springboot-data-jpa的 repository

@Repository
interface DeviceRulesRepository : JpaRepository<DeviceRules, Long>,
        JpaSpecificationExecutor<DeviceRules>, QuerydslPredicateExecutor<DeviceRules> {
    fun getAllByDeviceNoAndDeleted(deviceNo: String, deleted: Int): Optional<MutableList<DeviceRules>>
}

七、創(chuàng)建一個(gè)業(yè)務(wù)接口來(lái)聲明業(yè)務(wù)

interface DeviceService {
  
    /**
     * 查詢?cè)O(shè)備的路由規(guī)則
     */
    fun queryDeviceFlowRules(aPageRequest: APageRequest): PageResult<QueryDeviceFlowRulesVO>
}

八、創(chuàng)建一個(gè)業(yè)務(wù)接口實(shí)現(xiàn)來(lái)實(shí)現(xiàn)聲明的業(yè)務(wù)

@Service
class DeviceServiceImpl @Autowired
constructor(private val deviceRepository: DeviceRepository,
            private val deviceRulesRepository: DeviceRulesRepository,
            private val querydslUtlis: QuerydslUtlis,
            private val deviceMapstruct: DeviceMapstruct) : DeviceService {
    private val logger = LoggerFactory.getLogger(javaClass)
    
    override fun queryDeviceFlowRules(aPageRequest: APageRequest): PageResult<QueryDeviceFlowRulesVO> {
        val qDeviceRules = QDeviceRules.deviceRules
        val qFlowRules = QFlowRules.flowRules
        var rredicate: Predicate? = null
        if (StringUtils.isNotBlank(aPageRequest.query)) rredicate = qDeviceRules.deviceNo.eq(aPageRequest.query)
        val exprs = arrayOf<Expression<*>>(qDeviceRules.deviceNo, qDeviceRules.deleted, qFlowRules.rulesNo, qFlowRules.flowMax,
                qFlowRules.startTime, qFlowRules.endTime)
        val results = querydslUtlis.getQueryFactory()
                .select(*exprs)
                .from(qDeviceRules)
                .where(ExpressionUtils.allOf(rredicate))
                .leftJoin(qFlowRules)
                .on(qDeviceRules.rulesNo.eq(qFlowRules.rulesNo))
                .orderBy(qDeviceRules.createAt.desc())
                .offset((aPageRequest.pageIndex!! - 1) * aPageRequest.pageSize!!)
                .limit(aPageRequest.pageSize!!)
                .fetchResults()
        return PageUtlis.retPage(results, querydslUtlis.getCollection(results.results, exprs, QueryDeviceFlowRulesVO::class.java) as Collection<QueryDeviceFlowRulesVO>)
    }
}

這里使用了 querydsl來(lái)完成一個(gè)多表查詢

九、創(chuàng)建一個(gè) http服務(wù)接口

@RestWrapper
@RestController
@RequestMapping("/device")
@Api(value = "device", description = "設(shè)備相關(guān)接口", tags = ["device"])
class DeviceController @Autowired
constructor(private val deviceService: DeviceService) {

    @GetMapping("/query_device")
    fun queryDevice(aPageRequest: APageRequest) = deviceService.queryDevice(aPageRequest)

    @GetMapping("/query_device_flow_rules")
    fun queryDeviceFlowRules(aPageRequest: APageRequest) = deviceService.queryDeviceFlowRules(aPageRequest)
}

至此完成一個(gè)基本的開(kāi)發(fā)過(guò)程，大多數(shù)情況下可以直接將 java代碼粘貼到 kotlin文件中，會(huì)自動(dòng)轉(zhuǎn)換成合適的 kotlin代碼(偶爾需要自己調(diào)整，畢竟編輯器不是萬(wàn)能的)

到此這篇關(guān)于使用kotlin集成springboot開(kāi)發(fā)的文章就介紹到這了,更多相關(guān)kotlin集成springboot開(kāi)發(fā)內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

相關(guān)文章

最新評(píng)論