我尝试在r2dbc中使用spring

这是我的build.gradle

plugins {
    id 'org.springframework.boot' version '2.2.0.M4'
    id 'java'
}

apply plugin: 'io.spring.dependency-management'

group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'

repositories {
    mavenCentral()
    maven { url "https://repo.spring.io/snapshot" }
    maven { url "https://repo.spring.io/milestone" }
}

ext {
    set('springCloudVersion', "Greenwich.SR2")
}

dependencies {

     compile('io.jsonwebtoken:jjwt:0.9.1')

    //implementation 'io.jsonwebtoken:jjwt:0.9.1'

    implementation 'org.springframework.boot:spring-boot-starter-security'
    implementation 'org.springframework.boot:spring-boot-starter-webflux'
    implementation 'org.springframework.cloud:spring-cloud-starter-config'
    implementation 'org.springframework.cloud:spring-cloud-starter-gateway'
    implementation 'org.springframework.cloud:spring-cloud-starter-netflix-eureka-client'



    //runtime 'io.r2dbc:r2dbc-pool:0.8.0.M8'
    implementation 'io.r2dbc:r2dbc-postgresql:1.0.0.M7'
    compile 'io.r2dbc:r2dbc-pool:1.0.0.BUILD-SNAPSHOT'
    implementation 'org.springframework.boot.experimental:spring-boot-starter-r2dbc:0.1.0.M1'
    implementation 'org.springframework.boot.experimental:spring-boot-starter-data-r2dbc:0.1.0.M1'



    testImplementation 'org.springframework.boot:spring-boot-starter-test'
    testImplementation 'io.projectreactor:reactor-test'
    testImplementation 'org.springframework.security:spring-security-test'
}

dependencyManagement {
    imports {
        mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
    }
}


调用findAll的存储库时,会发生此错误


java.lang.NoSuchMethodError:
org.springframework.transaction.reactive.TransactionSynchronizationManager.currentTransaction()Lreactor / core / publisher / Mono;


将版本更新到快照似乎可以解决有关事务的问题

最佳答案

问题出在由spring-data-r2dbc0.1.0.M1提供的M1 spring-boot-starter-data-r2dbc中-您现在需要使用快照构建。

所以改变:

implementation 'org.springframework.boot.experimental:spring-boot-starter-data-r2dbc:0.1.0.M1'


至:

implementation 'org.springframework.boot.experimental:spring-boot-starter-data-r2dbc:0.1.0.BUILD-SNAPSHOT'


...而且您应该很好。

值得一提的是,至少在撰写本文时,关系型反应性东西(基于r2dbc的任何东西)都是非常前沿的,根本没有用于生产中。其自然的含义是需要快照构建来时常解决错误和不稳定性。将来这可能会改变。

09-09 22:35