從JHipster開始

Question

這是我在這里的第一篇文章。 我通常會嘗試自己找到所有東西，但我覺得自己碰到了所有可能的障礙。 如果我不夠具體，我深表歉意，但希望這里有人可以幫助我。 我剛剛開始使用jHipster，並成功生成了一個項目，並將其添加到IntelliJ IDEA中（使用試用版）。 不幸的是，我無法使該應用程序運行。 我繼續收到此錯誤（必須縮小以適合字符限制）：

2016-01-06 11:46:58.838 ERROR 8188 --- [ost-startStop-1]
 o.a.c.c.C.[Tomcat].[localhost].[/]       : Exception starting filter
 springSecurityFilterChain
 org.springframework.beans.factory.BeanCreationException: Error
 creating bean with name
 'org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration':
 Injection of autowired dependencies failed; 2016-01-06 11:46:58.841
 ERROR 8188 --- [ost-startStop-1]
 o.apache.catalina.core.StandardContext   : One or more Filters failed
 to start. Full details will be found in the appropriate container log
 file 2016-01-06 11:46:58.843 ERROR 8188 --- [ost-startStop-1]
 o.apache.catalina.core.StandardContext   : Context [] startup failed
 due to previous errors 2016-01-06 11:46:59.897 ERROR 8188 --- [ 
 restartedMain] o.s.boot.SpringApplication               : Application
 startup failed
 org.springframework.beans.factory.UnsatisfiedDependencyException:
 Error creating bean with name 'liquibase' defined in class path
 resource [com/contactapp/config/DatabaseConfiguration.class]:
 Unsatisfied dependency expressed through constructor argument with
 index 0 of type [javax.sql.DataSource]: : Error creating bean with
 name 'dataSource' defined in class path resource
 [com/contactapp/config/DatabaseConfiguration.class]: Bean
 instantiation via factory method failed; nested exception is
 org.springframework.beans.BeanInstantiationException: Failed to
 instantiate [javax.sql.DataSource]: Factory method 'dataSource' threw
 exception; nested exception is
 com.zaxxer.hikari.pool.PoolInitializationException: Exception during
 pool initialization: Connection to localhost:5432 refused. Check that
 the hostname and port are correct and that the postmaster is accepting
 TCP/IP connections.; nested exception is
 org.springframework.beans.factory.BeanCreationException: Error
 creating bean with name 'dataSource' defined in class path resource
 [com/contactapp/config/DatabaseConfiguration.class]: Bean
 instantiation via factory method failed; nested exception is
 org.springframework.beans.BeanInstantiationException: Failed to
 instantiate [javax.sql.DataSource]: Factory method 'dataSource' threw
 exception; nested exception is
 com.zaxxer.hikari.pool.PoolInitializationException: Exception during
 pool initialization: Connection to localhost:5432 refused. Check that
 the hostname and port are correct and that the postmaster is accepting
 TCP/IP connections. 2016-01-06 11:46:59.907  WARN 8188 --- [ 
 restartedMain] o.s.boot.SpringApplication               : Error
 handling failed (Error creating bean with name
 'delegatingApplicationListener' defined in class path resource
 [org/springframework/security/config/annotation/web/configuration/WebSecurityConfiguration.class]:
 BeanPostProcessor before instantiation of bean failed; nested
 exception is org.springframework.beans.factory.BeanCreationException:
 Error creating bean with name
 'org.springframework.cache.annotation.ProxyCachingConfiguration':
 Initialization of bean failed; nested exception is
 org.springframework.beans.factory.NoSuchBeanDefinitionException: No
 bean named
 'org.springframework.context.annotation.ConfigurationClassPostProcessor.importRegistry'
 is defined)

 Process finished with exit code 1

這些只是我收到的錯誤的開始。 我遵循了jHipster網站上列出的所有設置過程，包括安裝node.js，npm，bower，yo，grunt，maven，git。 我正在嘗試為此使用Java 8，但看不到問題是我無法運行沒有錯誤的未生成項目。 我按照說明將Spring添加到模塊項目結構中，但無濟於事。 該項目將生成並編譯，但不會運行。 運行“ grunt serve”將啟動一個空服務器，並使用mvn spring-boot：run關閉並顯示上面列出的錯誤，與嘗試運行Java應用程序相同。 只是要注意，我還嘗試過使用具有相同錯誤的Eclipse。 如果有人需要更多信息來幫助我解決此錯誤，我將非常樂意提供任何必要的詳細信息。 我可以弄清楚在使應用程序運行之后該怎么辦，但無法做到這一點。 如果有人可以提供任何幫助，我將不勝感激。 感謝大家！

Answer 1

看來錯誤是與連接到您的postgres服務器有關。 確保您有一個postgres使用application.yml定義的數據庫名稱運行。 如果您不想使用postgres，則可以將jHipster配置為使用嵌入式H2數據庫。

這是與錯誤跟蹤相關的部分：

com.zaxxer.hikari.pool.PoolInitializationException: Exception during
 pool initialization: Connection to localhost:5432 refused. Check that
 the hostname and port are correct and that the postmaster is accepting
 TCP/IP connections.