Spring Boot informix Jpa 连接

Posted 2023-04-18

【中文标题】Spring Boot informix Jpa 连接

【英文标题】：Spring Boot informix Jpa connection

【发布时间】：2019-12-25 10:07:10

【问题描述】：

我正在尝试使用informix RDBMS 和Spring boot 创建一个Web 服务应用程序。

当我声明 ddl-auto = create 时，它工作得很好，但是当我将它更改为 update 或 none 时，我得到了错误。我的 informix 版本是 9.40.UC8。

spring.datasource.url=jdbc:informix-sqli://*.*.*.*:*/testechange:INFORMIXSERVER=server
spring.datasource.username=
spring.datasource.password=

spring.datasource.tomcat.max-wait=20000
spring.datasource.tomcat.max-active=50
spring.datasource.tomcat.max-idle=20
spring.datasource.tomcat.min-idle=15

spring.datasource.driver-class-name=com.informix.jdbc.IfxDriver
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.InformixDialect
spring.jpa.properties.hibernate.id.new_generator_mappings = false
spring.jpa.properties.hibernate.format_sql = true
spring.jpa.hibernate.ddl-auto=update

logging.level.org.hibernate.SQL=DEBUG
logging.level.org.hibernate.type.descriptor.sql.BasicBinder=TRACE 

server.port=8182

@Entity
@Table(name ="todos")
public class Todo 

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Integer  id  ; 

    @Column
    private  String name   ;

    <dependencies>
        <!-- https://mvnrepository.com/artifact/com.ibm.informix/jdbc -->
        <dependency>
            <groupId>com.ibm.informix</groupId>
            <artifactId>jdbc</artifactId>
            <version>4.10.6.20151104</version>
        </dependency>
    </dependencies>

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.GenericJDBCException: Error accessing tables metadata

Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.exception.GenericJDBCException: Error accessing tables metadata

Caused by: org.hibernate.exception.GenericJDBCException: Error accessing tables metadata
Caused by: java.sql.SQLException: Routine (get_data_type) can not be resolved.*

【问题讨论】：

在以update 或none 开始之前，您能否检查表todos 是否真的存在于数据库中？

我修复了这个错误，只是我将 informix JDBC 版本更改为 4.50.2.fix

【参考方案1】：

当您使用更新时，您表示您将与 spring 建立的连接将是动态的，您可以在进行更改时接收到这些更改。