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scala - Spring boot(使用 Scala)无法实例化 DataSource [未找到支持的 DataSource 类型]

转载 作者:行者123 更新时间:2023-12-04 01:47:25 28 4
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当我运行我的独立 Web 应用程序时,spring 无法实例化数据源 bean。请注意,我不想在此项目中使用 JPA 或休眠。在这一点上我不知道为什么。我最好的猜测是依赖项或语法问题,但我无法找到解决问题的方法。

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'gameoo' defined in class path resource [com/hf/database/Datasource.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Factory method 'get' threw exception; nested exception is java.lang.IllegalStateException: No supported DataSource type found

如果有人有一些见解或可以帮助我解决这个问题,那就太好了。

下面是我的“spring.properties”文件

# Datasource properties
spring.datasource.driver-class-name = com.mysql.jdbc.Driver
spring.datasource.url = jdbc:mysql://localhost:3306/gameoo?autoReconnect=true&useSSL=true
spring.datasource.username = user
spring.datasource.password = pass
spring.datasource.initialSize = 1
spring.datasource.maxActive = 5

# HikariCP settings (spring.datasource.hikari.*)
spring.datasource.hikari.connection-timeout = 60000 #60 sec
spring.datasource.hikari.maximum-pool-size = 5 # max 5

导致问题的数据源类:

import javax.sql.DataSource
import org.springframework.boot.context.properties.ConfigurationProperties
import org.springframework.boot.jdbc.DataSourceBuilder
import org.springframework.context.annotation.{Bean, Configuration, Primary, PropertySource}

@Configuration
@PropertySource(Array("classpath:spring.properties"))
class Datasource {
@Primary
@Bean(name = Array("gameoo"))
@ConfigurationProperties(prefix = "spring.datasource")
def get: DataSource = {
DataSourceBuilder.create().build()
}
}

我的主要应用类如下

import org.springframework.boot.SpringApplication
import org.springframework.boot.autoconfigure.SpringBootApplication
import org.springframework.context.annotation.ComponentScan


@SpringBootApplication
@ComponentScan(Array[String]("com.hf"))
class AppRunner


object HexFrontier
{
def main(args: Array[String]): Unit = {
System.setProperty("spring.config.name", "spring")
SpringApplication.run(classOf[AppRunner])
}
}

最后是我的gradle依赖文件

plugins {
id 'java'
id 'scala'
}

group 'com.hf'
version '1.0'

repositories {
mavenCentral()
}

sourceCompatibility = 1.8

sourceSets {
main.java.srcDirs = ['src/main/hf']
test.java.srcDirs = ['src/test/hf']
main.resources.srcDirs = ['src/main/resources']
}

configurations.all {
resolutionStrategy.cacheChangingModulesFor 1, 'minutes'
}

compileJava {
options.compilerArgs += ["-proc:none"]
}

dependencies {
// Scala
compile('org.scala-lang:scala-library:2.12.8')

// Spring
compile group: 'org.springframework.boot', name: 'spring-boot', version: '2.1.2.RELEASE'
compile group: 'org.springframework.boot', name: 'spring-boot-autoconfigure', version: '2.1.2.RELEASE'
compile group: 'org.springframework.boot', name: 'spring-boot-starter-web', version: '2.1.2.RELEASE'
compile group: 'org.springframework.boot', name: 'spring-boot-starter-actuator', version: '2.1.2.RELEASE'
compile group: 'org.springframework', name: 'spring-core', version: '5.1.5.RELEASE'
compile group: 'org.springframework', name: 'spring-beans', version: '5.1.5.RELEASE'
compile group: 'org.springframework', name: 'spring-context', version: '5.1.5.RELEASE'
compile group: 'org.springframework', name: 'spring-web', version: '5.1.5.RELEASE'
compile group: 'org.springframework', name: 'spring-webmvc', version: '5.1.5.RELEASE'
compile group: 'org.springframework', name: 'spring-aop', version: '5.1.5.RELEASE'
compile group: 'org.springframework', name: 'spring-jdbc', version: '5.1.5.RELEASE'
// compile group: 'org.springframework.data', name: 'spring-data-commons', version: '2.1.4.RELEASE'

// servlets
compile group: 'javax.servlet', name: 'javax.servlet-api', version: '4.0.1'
compile group: 'javax.persistence', name: 'javax.persistence-api', version: '2.2'
compile group: 'javax.transaction', name: 'jta', version: '1.1'
compile group: 'javax.xml.bind', name: 'jaxb-api', version: '2.1'
compile group: 'javax.validation', name: 'validation-api', version: '1.0.0.GA'
compile group: 'javax.servlet.jsp', name: 'javax.servlet.jsp-api', version: '2.3.3'
compile group: 'javax.annotation', name: 'javax.annotation-api', version: '1.3.2'

// mysql jdbc
compile group: 'mysql', name: 'mysql-connector-java', version: '8.0.15'

// Logging
compile group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.11.0'
compile group: 'org.apache.logging.log4j', name: 'log4j-api', version: '2.11.0'

// JSON / Yaml / Config support
compile group: 'com.fasterxml.jackson.core', name: 'jackson-core', version: '2.9.8'
compile group: 'com.fasterxml.jackson.module', name: 'jackson-module-scala_2.12', version: '2.9.8'
compile group: 'com.fasterxml.jackson.dataformat', name: 'jackson-dataformat-yaml', version: '2.9.8'
compile group: 'com.typesafe', name: 'config', version: '1.3.3'

// Testing
testCompile group: 'org.hamcrest', name: 'hamcrest-all', version: '1.3'
testCompile group: 'junit', name: 'junit', version: '4.12'
}

最佳答案

Failed to instantiate [javax.sql.DataSource]: Factory method 'get' threw exception; nested exception is java.lang.IllegalStateException: No supported DataSource type found

如果在 build() 之前调用 type() 没有设置 DataSource 类名,DataSourceBuilder 将扫描类路径以查找下面依次介绍DataSource类。如果没有找到,就会发生这个错误。

  1. com.zaxxer.hikari.HikariDataSource (HikariCP)
  2. org.apache.tomcat.jdbc.pool.DataSource(Tomcat 数据库连接池)
  3. org.apache.commons.dbcp2.BasicDataSource(公共(public) DBCP2)

所以你必须在 build.gradle 中包含 HikariCP 。或者简单地使用 spring-boot-starter-jdbc 它将自动获得一个 HikariCPspring-jdbc 并定义一个 DataSource bean 给你。

所以我建议修改build.gradle如下:

compile group: 'org.springframework.boot', name: 'spring-boot-starter-jdbc', version: '2.1.2.RELEASE'

//No need as spring-boot-starter-jdbc automatically get this
//compile group: 'org.springframework', name: 'spring-jdbc', version: '5.1.5.RELEASE'

关于scala - Spring boot(使用 Scala)无法实例化 DataSource [未找到支持的 DataSource 类型],我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/54719293/

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