Spring boot(使用Scala)无法实例化数据源[未找到支持的数据源类型]
当我运行我的独立web应用程序时,spring无法实例化DataSourceBean。请注意,我不想在这个项目中使用JPA或hibernate。在这一点上,我不知道为什么。我的最佳猜测是依赖性或语法问题,但我还没有找到解决问题的方法Spring boot(使用Scala)无法实例化数据源[未找到支持的数据源类型],scala,spring-boot,jdbc,Scala,Spring Boot,Jdbc,当我运行我的独立web应用程序时,spring无法实例化DataSourceBean。请注意,我不想在这个项目中使用JPA或hibernate。在这一点上,我不知道为什么。我的最佳猜测是依赖性或语法问题,但我还没有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 reso
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
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()
}
}
我的主要应用课程如下
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,下面是我的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'
}
未能实例化[javax.sql.DataSource]:工厂方法“get”
抛出异常;嵌套异常为java.lang.IllegalStateException:
找不到支持的数据源类型
如果未通过在build()
之前调用type()
来设置数据源类名,DataSourceBuilder
将按顺序扫描类路径以查找以下数据源类。如果没有找到,则会发生此错误
com.zaxxer.hikari.HikariDataSource
(HikariCP)org.apache.tomcat.jdbc.pool.DataSource
(tomcat DB连接池)org.apache.commons.dbcp2.BasicDataSource
(commons dbcp2)build.gradle
中包含HikariCP
。或者只需使用springbootstarterjdbc
,它将自动获得HikariCP
和springjdbc
,并为您定义DataSource
bean
因此我建议修改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'
这正是我的问题,非常感谢您的解释。
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'