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我試圖部署到AWS使用JHipster開發的應用程序，但試圖這樣做時出現錯誤。它看起來像我無法連接到數據庫。 我創建了一個簡單的JSP頁面，通過jdbc直接連接到數據庫，它工作正常，所以看起來我在配置應用程序時出錯了。jhipster RDS連接問題
這是我目前application.yml：
spring:
profiles:
active: prod
datasource:
dataSourceClassName: com.mysql.jdbc.jdbc2.optional.MysqlDataSource
url: jdbc:mysql://rds_url:3306/db?user=user&password=password
databaseName: db
serverName: rds_url
username: user
password: password
cachePrepStmts: true
prepStmtCacheSize: 250
prepStmtCacheSqlLimit: 2048
useServerPrepStmts: true
這是我在日誌中看到：
Caused by: com.zaxxer.hikari.pool.PoolInitializationException: Exception during pool initialization
at com.zaxxer.hikari.pool.BaseHikariPool.initializeConnections(BaseHikariPool.java:542)
at com.zaxxer.hikari.pool.BaseHikariPool.<init>(BaseHikariPool.java:171)
at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:60)
at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:48)
at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:80)
at com.test.config.DatabaseConfiguration.dataSource(DatabaseConfiguration.java:83)
at com.test.config.DatabaseConfiguration$$EnhancerBySpringCGLIB$$b2394f0e.CGLIB$dataSource$1(<generated>)
at com.test.config.DatabaseConfiguration$$EnhancerBySpringCGLIB$$b2394f0e$$FastClassBySpringCGLIB$$e28d8821.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:309)
at com.test.config.DatabaseConfiguration$$EnhancerBySpringCGLIB$$b2394f0e.dataSource(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
... 137 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:389)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1038)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:338)
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2237)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2270)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2069)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:794)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:44)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:389)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:399)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:325)
at com.mysql.jdbc.jdbc2.optional.MysqlDataSource.getConnection(MysqlDataSource.java:422)
at com.mysql.jdbc.jdbc2.optional.MysqlDataSource.getConnection(MysqlDataSource.java:134)
at com.mysql.jdbc.jdbc2.optional.MysqlDataSource.getConnection(MysqlDataSource.java:105)
at com.zaxxer.hikari.pool.BaseHikariPool.addConnection(BaseHikariPool.java:438)
at com.zaxxer.hikari.pool.BaseHikariPool.initializeConnections(BaseHikariPool.java:540)
... 152 more
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:213)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:297)
... 169 more
這裏有一個鏈接到更詳細logs。
任何幫助將深表謝意。
謝謝， Jodevan。