Java神操作之SpringBoot基础上添加Kotlin混合开发

深藏阁楼爱情的钟 2022-03-25 21:18 172阅读 0赞

第一步在原有基础上引入依赖:

<dependency>
                <groupId>org.jetbrains.kotlin</groupId>
                <artifactId>kotlin-stdlib-jre8</artifactId>
                <version>${kotlin.version}</version>
            </dependency>
    
            <dependency>
                <groupId>org.jetbrains.kotlin</groupId>
                <artifactId>kotlin-reflect</artifactId>
                <version>${kotlin.version}</version>
            </dependency>
            <dependency>
                <groupId>com.fasterxml.jackson.module</groupId>
                <artifactId>jackson-module-kotlin</artifactId>
                <version>2.9.4.1</version>
            </dependency>

版本号多去少补:

构建方式修改:

<build>
            <sourceDirectory>${project.basedir}/src/main/java</sourceDirectory>
            <testSourceDirectory>${project.basedir}/src/</testSourceDirectory>
    
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    
                    <configuration>
                        <source>1.8</source>
                        <target>1.8</target>
                        <encoding>UTF-8</encoding>
                    </configuration>
                </plugin>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                    <dependencies>
                        <dependency>
                            <groupId>org.springframework</groupId>
                            <artifactId>springloaded</artifactId>
                            <version>1.2.5.RELEASE</version>
                        </dependency>
                    </dependencies>
                    <executions>
                        <execution>
                            <goals>
                                <goal>repackage</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
                <plugin>
                    <artifactId>kotlin-maven-plugin</artifactId>
                    <groupId>org.jetbrains.kotlin</groupId>
                    <version>${kotlin.version}</version>
                    <configuration>
                        <compilerPlugins>
                            <plugin>spring</plugin>
                        </compilerPlugins>
                        <jvmTarget>1.8</jvmTarget>
                    </configuration>
                    <executions>
                        <execution>
                            <id>compile</id>
                            <phase>compile</phase>
                            <goals>
                                <goal>compile</goal>
                            </goals>
                        </execution>
                        <execution>
                            <id>test-compile</id>
                            <phase>test-compile</phase>
                            <goals>
                                <goal>test-compile</goal>
                            </goals>
                        </execution>
                    </executions>
                    <dependencies>
                        <dependency>
                            <groupId>org.jetbrains.kotlin</groupId>
                            <artifactId>kotlin-maven-allopen</artifactId>
                            <version>${kotlin.version}</version>
                        </dependency>
                    </dependencies>
                </plugin>
            </plugins>
        </build>

修改启动主类:

package com.example.springboot
    
    import org.springframework.boot.SpringApplication
    import org.springframework.boot.autoconfigure.SpringBootApplication
    
    @SpringBootApplication
    class StartApplication
    
    fun main(args: Array<String>) {
        SpringApplication.run(StartApplication::class.java,*args)
    }

秘笈:

在需要Java类转换成Kotlin类的代码里全选:然后->ctr+alt+shift+k。注意:这个转换是单向的,无法将Kotlin转回Java,只能做回退操作。