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我正在學習Grail，並試圖在代碼之下，但在引用兩個類別的車輛類和模型後，無法啓動應用程序。還我加入一年車輛類整數無法啓動Grail應用程序
Running application...
2017-03-05 08:48:32.229 ERROR --- [ost-startStop-1] o.s.b.c.embedded.tomcat.TomcatStarter : Error starting Tomcat context. Exception: org.springframework.beans.factory.BeanCreationException. Message: Error creating bean with name 'grailsCacheFilter': Cannot create inner bean '(inner bean)#692e68e0' of type [grails.plugin.cache.web.filter.simple.MemoryPageFragmentCachingFilter] while setting bean property 'filter'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name '(inner bean)#692e68e0': Unsatisfied dependency expressed through method 'setUrlMappingsHandlerMapping' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'urlMappingsHandlerMapping': Unsatisfied dependency expressed through method 'setWebRequestInterceptors' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'openSessionInViewInterceptor': Cannot resolve reference to bean 'hibernateDatastore' while setting bean property 'hibernateDatastore'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hibernateDatastore': Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.grails.orm.hibernate.HibernateDatastore]: Constructor threw exception; nested exception is org.hibernate.MappingException:
**Could not determine type for: groovy.lang.Binding, at table: vhicle, for columns: [org.hibernate.mapping.Column(binding)]**
2017-03-05 08:48:32.392 ERROR --- [ main] o.s.boot.SpringApplication : Application startup failed
org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.boot.context.embedded.EmbeddedServletContainerException: Unable to start embedded Tomcat
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:137)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:536)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
at grails.boot.GrailsApp.run(GrailsApp.groovy:83)
at grails.boot.GrailsApp.run(GrailsApp.groovy:387)
at grails.boot.GrailsApp.run(GrailsApp.groovy:374)
at grails.boot.GrailsApp$run.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':bootRun'.
Process 'command '/usr/lib/jvm/java-7-oracle/bin/java'' finished with non-zero exit value 1
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
| Error Failed to start server (Use --stacktrace to see the full trace)
這裏是我的Vhicle.groovy
package com.example
class Vehicle {
Integer year
String name
Model model
Make make
static constraints = {
year min: 1900
name maxSize: 255
}
}
def vehicle = Vehicle.findByName('pickup')
if(vehicle) {
println vehicle.model // e.g, 'Titan'
println vehicle.make // e.g, 'Nissan'
}
Model.groovy
package com.example
class Model {
String name
static belongsTo = [ make: Make ]
static constraints = {
}
String to_String(){
name
}
}
Here is my Make.groovy
package com.example
class Make {
String name
static constraints = {
}
String to_String(){
name
}
}