Question

我回去编程我的旧程序https://github.com/JonkiPro/REST-Web-Services。我已将Spring Boot从15.6版更新到2.0.0版。我在编译时遇到了很多问题，但我无法处理。好吧，在编译期间，他把我扔进了控制台

2018-03-18 21:54:53.339 ERROR 3220 --- [ost-startStop-1] com.zaxxer.hikari.HikariConfig           : HikariPool-1 - jdbcUrl is required with driverClassName.
2018-03-18 21:54:55.392  INFO 3220 --- [ost-startStop-1] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'unit'
2018-03-18 21:54:56.698  INFO 3220 --- [ost-startStop-1] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'unit'
2018-03-18 21:54:56.778 ERROR 3220 --- [ost-startStop-1] com.zaxxer.hikari.HikariConfig           : HikariPool-1 - jdbcUrl is required with driverClassName.
2018-03-18 21:54:56.782 ERROR 3220 --- [ost-startStop-1] o.s.b.web.embedded.tomcat.TomcatStarter  : Error starting Tomcat context. Exception: org.springframework.beans.factory.UnsatisfiedDependencyException. Message: Error creating bean with name 'webSecurityConfig': Unsatisfied dependency expressed through field 'userDetailsService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userDetailsService' defined in file [C:\Users\Jonatan\Documents\GitHub\REST-Web-Services\web\out\production\classes\com\web\web\security\service\impl\UserDetailsServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userRepository': Cannot create inner bean '(inner bean)#65d6e77b' of type [org.springframework.orm.jpa.SharedEntityManagerCreator] while setting bean property 'entityManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#65d6e77b': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory': Post-processing of FactoryBean's singleton object failed; nested exception is java.lang.IllegalArgumentException: jdbcUrl is required with driverClassName.
2018-03-18 21:54:56.821  WARN 3220 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat

我从未犯过这样的错误。我完全不知道这意味着什么。我的基地属性看起来像这样

spring:
  datasource:
    driver-class-name: org.postgresql.Driver
    url: jdbc:postgresql:database
    username: root
    password: root
    schema: classpath:/db/init/schema.sql

我不知道如何处理这个错误。我已经编程了很长时间，但我第一次遇到hikari的概念。我使用Tomcat（在Spring Boot中）服务器和PostgreSQL数据库。

Answer 1

我在另一个背景下遇到了同样的问题。来自79. Data Access - Configure a Custom DataSource

如果碰巧在类路径上有Hikari，这个基本设置不起作用，因为Hikari没有url属性（但是有一个jdbcUrl属性）

Hikari是spring boot 2中的默认池。

所以你可以替换配置 url: jdbc:postgresql:database - ＆gt; jdbc-url: jdbc:postgresql:database

或者您可以保留配置，但是您需要定义另一个Bean来处理映射（别名）

@Bean
@Primary
@ConfigurationProperties("app.datasource")
public DataSourceProperties dataSourceProperties() {
    return new DataSourceProperties();
}

@Bean
@ConfigurationProperties("app.datasource")
public DataSource dataSource(DataSourceProperties properties) {
    return properties.initializeDataSourceBuilder().
        .build();
}

Answer 2

删除spring.datasource.driver-class-name属性或将spring.datasource.url属性重命名为spring.datasource.jdbc-url。

您的错误报告了这一点：

java.lang.IllegalArgumentException：driverClassName需要jdbcUrl

第一个选项看起来更干净，Spring Boot会根据spring.datasource.url属性值找出默认的驱动程序类名（如果你想调试它，请参阅org.springframework.boot.jdbc.DatabaseDriver类）。

HikariPool-1 - driverClassName

2 个答案: