grails - 如何显示目录中的图像？

Question

据我所知，我们总是从assets/image文件夹中播放图像
例如这样

<asset:image src='settings.png' style="height: 20px" alt="logout"/>

但是，如果我的图像文件位于根目录下，该怎么办？
喜欢
/home/file/images.png -->my image's file
/root/tomcat8/webapp/alkd.war home和 root文件夹处于同一级别

我正在使用Grails 3.1.1

我正在尝试显示超过10张图像

我试图像这样向 applicaiton.yml添加一些代码。

http://www.asset-pipeline.com/manual/#configuration-2

但我在启动时收到此错误。

`ERROR org.springframework.boot.SpringApplication - Application startup failed
java.io.FileNotFoundException: class path resource [assets/perpage/memberCreate-5e70ab1b20bb09d756c62afce8cb0d65.js] cannot be opened because it does not exist
        at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:172) ~[spring-core-4.2.4.RELEASE.jar:4.2.4.RELEASE]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_111]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_111]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_111]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_111]
        at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93) ~[groovy-2.4.5.jar:2.4.5]
        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325) ~[groovy-2.4.5.jar:2.4.5]
        at org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76) ~[groovy-2.4.5.jar:2.4.5]
        at org.codehaus.groovy.runtime.callsite.GetEffectivePojoPropertySite.getProperty(GetEffectivePojoPropertySite.java:64) ~[groovy-2.4.5.jar:2.4.5]
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:296) ~[groovy-2.4.5.jar:2.4.5]
        at asset.pipeline.AssetPipelineBootStrap$_closure1$_closure2.doCall(AssetPipelineBootStrap.groovy:23) ~[asset-pipeline-3.0.15.jar:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_111]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_111]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_111]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_111]
        at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93) ~[groovy-2.4.5.jar:2.4.5]
        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325) ~[groovy-2.4.5.jar:2.4.5]
        at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:294) ~[groovy-2.4.5.jar:2.4.5]
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1019) ~[groovy-2.4.5.jar:2.4.5]
        at groovy.lang.Closure.call(Closure.java:426) ~[groovy-2.4.5.jar:2.4.5]
        at groovy.lang.Closure.call(Closure.java:442) ~[groovy-2.4.5.jar:2.4.5]
        at org.codehaus.groovy.runtime.DefaultGroovyMethods.each(DefaultGroovyMethods.java:2030) ~[groovy-2.4.5.jar:2.4.5]
        at org.codehaus.groovy.runtime.DefaultGroovyMethods.each(DefaultGroovyMethods.java:2015) ~[groovy-2.4.5.jar:2.4.5]
        at org.codehaus.groovy.runtime.DefaultGroovyMethods.each(DefaultGroovyMethods.java:2068) ~[groovy-2.4.5.jar:2.4.5]
        at org.codehaus.groovy.runtime.dgm$164.invoke(Unknown Source) ~[groovy-2.4.5.jar:2.4.5]
        at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite$PojoMetaMethodSiteNoUnwrapNoCoerce.invoke(PojoMetaMethodSite.java:274) ~[groovy-2.4.5.jar:2.4.5]
        at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite.call(PojoMetaMethodSite.java:56) ~[groovy-2.4.5.jar:2.4.5]
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48) ~[groovy-2.4.5.jar:2.4.5]
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113) ~[groovy-2.4.5.jar:2.4.5]
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125) ~[groovy-2.4.5.jar:2.4.5]
        at asset.pipeline.AssetPipelineBootStrap$_closure1.doCall(AssetPipelineBootStrap.groovy:19) ~[asset-pipeline-3.0.15.jar:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_111]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_111]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_111]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_111]
        at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93) ~[groovy-2.4.5.jar:2.4.5]
        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325) ~[groovy-2.4.5.jar:2.4.5]
        at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:294) ~[groovy-2.4.5.jar:2.4.5]
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1019) ~[groovy-2.4.5.jar:2.4.5]
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1084) ~[groovy-2.4.5.jar:2.4.5]
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1019) ~[groovy-2.4.5.jar:2.4.5]

Answer 1

您可以先获得Tomcat根目录并附加目录/文件名，例如

def baseDir = System.getProperty( 'catalina.base' )
def imagesDir = "${baseDir}\webapps\myapp\images"