Question

是如此的疲惫，我可以使用sqldeveloper连接到AWS RDS，但是不能使用我的Java应用程序（Java源代码或jsp）

当我尝试访问RDS时，出现以下错误：

coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"]
26-Jun-2018 04:24:33.203 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
26-Jun-2018 04:24:33.212 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-8009"]
26-Jun-2018 04:24:33.215 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
26-Jun-2018 04:24:33.219 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 1387 ms
26-Jun-2018 04:24:33.265 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service Catalina
26-Jun-2018 04:24:33.266 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.0.50
26-Jun-2018 04:24:33.286 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /var/lib/tomcat8/webapps/ROOT
26-Jun-2018 04:24:35.020 INFO [localhost-startStop-1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
26-Jun-2018 04:24:35.097 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /var/lib/tomcat8/webapps/ROOT has finished in 1,811 ms
26-Jun-2018 04:24:35.100 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"]
26-Jun-2018 04:24:35.106 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"]
26-Jun-2018 04:24:35.108 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 1888 ms
Loading driver...
Driver loaded!
jdbc:oracle:thin://IP:1521/ORCL?user=username&password=password
SQLException: Invalid Oracle URL specified
SQLState: 99999
VendorError: 17067
Closing the connection.
SQLException: Invalid Oracle URL specified
SQLState: 99999
VendorError: 17067
Closing the connection.

但是URL与我使用sqldeveloper尝试的值相同。

有什么问题吗？

请赐教，因为我为此苦了大约一个星期！：（

Answer 1

我不确定您的应用程序是如何设置的，但我使用的是 Maven 和 Spring Boot，并且它的工作方式如下：

我主要是按照这个指南，忽略了 .sql 文件，thymeleaf UI，"model.addAttribute("cities",ities);"部分，以及 html 文件： here

我的 application.properties 文件是这样的

postgres.comment.aa=https://zetcode.com/springboot/postgresql/
spring.main.banner-mode=off
logging.level.org.springframework=ERROR

spring.jpa.hibernate.ddl-auto=none

spring.datasource.initialization-mode=always
spring.datasource.platform=postgres
spring.datasource.url=jdbc:postgresql://your-rds-url-here.us-east-1.rds.amazonaws.com:yourDbPortHere/postgres
spring.datasource.username=postgres
spring.datasource.password=<your db password here>

spring.jpa.properties.hibernate.jdbc.lob.non_contextual_creation=true

如果您有自定义架构，您可以将“?currentSchema=users”附加到网址：

spring.datasource.url=jdbc:postgresql://your-rds-url-here.us-east-1.rds.amazonaws.com:yourDbPortHere/postgres?currentSchema=users

感谢这个对架构的 SO 答案： https://zetcode.com/springboot/postgresql/

其他几个链接也有帮助 Is it possible to specify the schema when connecting to postgres with JDBC?

https://turreta.com/2015/03/01/how-to-specify-a-default-schema-when-connecting-to-postgresql-using-jdbc/

我可以通过sqldeveloper连接到AWS RDS，但不能通过Java应用程序连接

1 个答案: