Springboot 与 Sybase 服务器 - 无法加载驱动程序类:com.sybase.jdbc4.jdbc.SybDriver
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【中文标题】Springboot 与 Sybase 服务器 - 无法加载驱动程序类:com.sybase.jdbc4.jdbc.SybDriver【英文标题】:Springboot with Sybase server - Cannot load driver class: com.sybase.jdbc4.jdbc.SybDriver 【发布时间】:2018-04-04 19:16:02 【问题描述】:在使用新的 Spring 引导应用程序配置 Sybase 服务器时遇到困难。不确定如何使用 spring boot 成功配置 Sybase 服务器。出现错误“无法加载驱动程序类:com.sybase.jdbc4.jdbc.SybDriver”。
基本上,我希望从 Sybase 数据库中获取一些数据并以 JSON 格式作为 RESTful 服务发布。任何帮助,将不胜感激。
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.rbccm.poc</groupId>
<artifactId>springbootpoc1</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.RELEASE</version>
</parent>
<name>springbootpoc1</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.sybase.jconnect</groupId>
<artifactId>jconn4</artifactId>
<version>7.07</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.github.derjust</groupId>
<artifactId>spring-data-dynamodb</artifactId>
<version>5.0.2</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
application.properties
server.port=8090
spring.jpa.hibernate.ddl-auto=none
spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
spring.jpa.databasePlatform=org.hibernate.dialect.SybaseDialect
spring.jpa.show-sql=true
# hikariCP
spring.datasource.type=com.zaxxer.hikari.HikariDataSource
spring.datasource.url=jdbc:sybase:Tds:server:port/dbname
spring.datasource.username=u_****
spring.datasource.password=****
spring.datasource.connectionTestQuery=SELECT 1
spring.datasource.poolName=SpringBootHikariCP
spring.datasource.maximumPoolSize=10
spring.datasource.connectionTimeout=60000
spring.datasource.driverClassName=com.sybase.jdbc4.jdbc.SybDriver
# Number of ms to wait before throwing an exception if no connection is available.
spring.datasource.tomcat.max-wait=10000
# Maximum number of active connections that can be allocated from this pool at the same time.
spring.datasource.tomcat.max-active=50
# Validate the connection before borrowing it from the pool.
spring.datasource.tomcat.test-on-borrow=true
#JDBC customize
spring.jdbc.template.max-rows=500
Maven 构建日志
2018-04-04 14:48:25.206 ERROR 21768 --- [ main] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration': Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is java.lang.IllegalStateException: Cannot load driver class: com.sybase.jdbc4.jdbc.SybDriver
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:729) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:192) ~[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]
【问题讨论】:
为什么sybase驱动的作用域设置为provided
?
【参考方案1】:
您可以按照以下步骤将 spring boot jpa 与 sybase 一起使用:
1.-从the sap marketplace下载jconn4.jar
2.-在本地仓库中安装jar:
mvn install:install-file -Dfile="path-to\jconn4.jar" -DgroupId=sybase -DartifactId=jconn -Dversion=4_RELEASE -Dpackaging=jar
3.-将依赖项添加到您的 pom:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>sybase</groupId>
<artifactId>jconn</artifactId>
<version>4_RELEASE</version>
</dependency>
4.-将数据库配置添加到你的application.properties:
spring.datasource.url=jdbc:sybase:Tds:HOST:PORT/DB_NAME
spring.datasource.username=USER
spring.datasource.password=PASS
spring.jpa.properties.hibernate.default_schema=SCHEMA
spring.datasource.driverClassName=com.sybase.jdbc4.jdbc.SybDriver
spring.datasource.type=com.zaxxer.hikari.HikariDataSource
spring.jpa.hibernate.ddl-auto=none
spring.jpa.databasePlatform=org.hibernate.dialect.SybaseDialect
spring.datasource.connectionTestQuery=select 1
spring.jpa.show-sql=true
【讨论】:
谢谢,这有帮助!同样对于拥有不同/较新版本 Sybase 的人,不要忘记在 pom.xml 和 application.properties 中进行更改。比如对于jconn2.jars,在application.properties中应该是spring.datasource.driverClassName=com.sybase.jdbc2.jdbc.SybDriverdocs.oracle.com/cd/E19509-01/820-3497/agqkg/index.html【参考方案2】:已解决: 在 pom 依赖中,我使用了 jdbc,而不是 jpa。并且必须在外部的类路径中添加“jconn4d.jar”。
pom.xml
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency> -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<!-- <dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>6.0.5</version>
</dependency> -->
<!-- <dependency>
<groupId>com.sybase.jconnect</groupId>
<artifactId>jconn4</artifactId>
<version>7.07</version>
<scope>provided</scope>
</dependency> -->
<dependency>
<groupId>jtds</groupId>
<artifactId>jtds</artifactId>
<version>1.2</version>
</dependency>
application.properties
spring.datasource.url=jdbc:sybase:Tds:<server>:<port>/<dbname>
spring.datasource.username=u_****
spring.datasource.password=*****
spring.datasource.driverClassName=com.sybase.jdbc4.jdbc.SybDriver
【讨论】:
使用上面的解决方案,您不需要对jtds
的依赖,因为您没有使用它附带的 JDBC 驱动程序。你使用的是JConn的com.sybase.jdbc4.jdbc.SybDriver
,而jtds自带的驱动名称是net.sourceforge.jtds.jdbc.Driver
【参考方案3】:
也因为com.sybase.jdbc4.jdbc.SybDriver
不是jtds提供的JDBC驱动实现的名字。它附带的正确名称是
net.sourceforge.jtds.jdbc.Driver
我相信 jconn4d.jar 不在 maven Central 上,并且此实现附带的驱动程序名称是 com.sybase.jdbc4.jdbc.SybDriver
更多详情请点击:
https://www.dbvis.com/features/sybase-ase-database-drivers/
http://jtds.sourceforge.net/faq.html#driverImplementation
【讨论】:
【参考方案4】:这就是我所做的。 Spring JPA 为我工作
1.在资源文件夹中添加了Jconn3.jar(你甚至可以添加它的最新版本)。
2.修改application.properties中的连接测试查询
application.properties
spring.datasource.url=jdbc:sybase:Tds:<server>:<port>/<dbname>
spring.datasource.username=u_****
spring.datasource.password=*****
spring.datasource.driverClassName=com.sybase.jdbc4.jdbc.SybDriver
spring.datasource.hikari.connection-test-query=SELECT 1
【讨论】:
【参考方案5】:这个问题有点困扰我,但它的解决方案很简单。 首先在你的 pom.XML 中添加依赖:
<dependency>
<groupId>jtds</groupId>
<artifactId>jtds</artifactId>
<version>1.2</version>
</dependency>
那么您的 URL 定义应该遵循这种格式(在 Application.properties 或 Application.yml 中)
jdbc:jtds:sybase://<Host>:<Port>/<database>
这个解决方案应该很好用。
【讨论】:
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