驱动程序:org.postgresql.Driver@3ed03652 为 URL 返回空值...在部署 Spring Boot 到 Heroku 时 [英] Driver:org.postgresql.Driver@3ed03652 returned null for URL... While deployin spring boot to Heroku

问题描述

我尝试在 Heroku 上部署我的应用程序，但有一些我无法修复的错误我的 application.poperties

I try deploy my application on Heroku, but have some errors which I can't fix my application.poperties

    spring.mvc.view.prefix = /WEB-INF/view/
spring.mvc.view.suffix = .jsp

spring.datasource.url = jdbc:postgres://user:[e-mail]:5432/database

# Username and password
spring.datasource.username = user
spring.datasource.password = pass

# Keep the connection alive if idle for a long time (needed in production)
spring.datasource.testWhileIdle = true
spring.datasource.validationQuery = SELECT 1

spring.datasource.driverClassName=org.postgresql.Driver

# ===============================
# = JPA / HIBERNATE
# ===============================

# Use spring.jpa.properties.* for Hibernate native properties (the prefix is
# stripped before adding them to the entity manager).

# Show or not log for each sql query
spring.jpa.show-sql = true

# Hibernate ddl auto (create, create-drop, update): with "update" the database
# schema will be automatically updated accordingly to java entities found in
# the project
spring.jpa.hibernate.ddl-auto = update

# Naming strategy
spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy

# Allows Hibernate to generate SQL optimized for a particular DBMS
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.PostgreSQLDialect

我的应用程序类是用于启动应用程序的标准 Spring Boot 类

my Application class is standart spring boot class for application starting

我的 pom.xml(其中的一部分):

my pom.xml (part of it):

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-cache</artifactId>
        </dependency>
        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
        </dependency>

    </dependencies>
    <build>
        <finalName>spring</finalName>
        <plugins>
            <!-- Spring Boot Maven -->
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>copy</goal>
                        </goals>
                        <configuration>
                            <artifactItems>
                                <artifactItem>
                                    <groupId>com.github.jsimone</groupId>
                                    <artifactId>webapp-runner</artifactId>
                                    <version>8.0.30.2</version>
                                    <destFileName>webapp-runner.jar</destFileName>
                                </artifactItem>
                            </artifactItems>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

我收到的错误

> 12:06:42.061  INFO 12352 --- [ost-startStop-1]
> o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter:
> 'applicationContextIdFilter' to: [/*] 2017-03-10 12:06:42.488 ERROR
> 12352 --- [           main] o.a.tomcat.jdbc.pool.ConnectionPool      :
> Unable to create initial connections of pool.
> 
> java.sql.SQLException: Driver:org.postgresql.Driver@760cf594 returned
> null for
> URL:jdbc:postgres://fqwebtafwgsgmp:[e-mail]:5432/daapseha11ekml
>   at
> org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:329)
> ~[tomcat-jdbc-8.5.11.jar:na]  at
> org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:203)
> ~[tomcat-jdbc-8.5.11.jar:na]  at
> org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:732)
> [tomcat-jdbc-8.5.11.jar:na]   at
> org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:664)
> [tomcat-jdbc-8.5.11.jar:na]   at
> org.apache.tomcat.jdbc.pool.ConnectionPool.init(ConnectionPool.java:479)
> [tomcat-jdbc-8.5.11.jar:na]   at
> org.apache.tomcat.jdbc.pool.ConnectionPool.<init>(ConnectionPool.java:154)
> [tomcat-jdbc-8.5.11.jar:na]   at
> org.apache.tomcat.jdbc.pool.DataSourceProxy.pCreatePool(DataSourceProxy.java:118)
> [tomcat-jdbc-8.5.11.jar:na]   at

如果有人解释我的错误，我将不胜感激

I would be grateful if somebody explain my mistake

推荐答案

您在 JDBC URL 中使用了 jdbc:postgres 而不是 jdbc:postgresql(注意额外的ql).

You are using jdbc:postgres in your JDBC URL instead of jdbc:postgresql (note the extra ql).

Heroku 已经为您设置了 SPRING_DATASOURCE_URL 环境变量，因此您应该能够完全删除 application.properties 中的 spring.datasource 条目.

Heroku already sets SPRING_DATASOURCE_URL environment variable for you, so you should be able to remove your spring.datasource entries in application.properties entirely.

如果您无法删除它们，请尝试:

If you are not able to remove them, try:

spring.datasource.url=${JDBC_DATABASE_URL}

如果这不起作用，那一定意味着您没有使用 Java buildpack 或其他东西.

If that doesn't work, it must mean you are not using the Java buildpack or something.

也一定要运行:

heroku pg:credentials --reset

这篇关于驱动程序:org.postgresql.Driver@3ed03652 为 URL 返回空值...在部署 Spring Boot 到 Heroku 时的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！