Question

我正在尝试在Tomcat7上运行需要一些插件的Project，并且是用Grails编写的。

使用命令 grails prod war 创建-war会导致错误，告诉我不支持类型为[java.util.List]的参数。

我在哪里以及如何看到支持哪个参数以及为什么List不是？

包含错误的日志文件如下所示：

| Loading Grails 2.4.1
| Configuring classpath
| Configuring classpath.
| Environment set to production
| Environment set to production.
| Environment set to production..
| Environment set to production...
| Environment set to production....
| Environment set to production.....
| Packaging Grails application
| Packaging Grails application.
| Packaging Grails application..
| Packaging Grails application...
| Packaging Grails application....
| Packaging Grails application.....
| Compiling 70 source files
| Warning The [listFullAccessResources] action in [VsGrantController] accepts a parameter of type [java.util.List].  Interface types and abstract class types are not supported as command objects.  This parameter will be ignored.

       List listFullAccessResources(VsUser loggedInUser, List resultsGoups) {
       ^
  [groovyc] org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
  [groovyc] General error during class generation: java.lang.NoClassDefFoundError: Unable to load class org.jets3t.service.impl.rest.httpclient.RestS3Service due to missing dependency org/apache/http/client/methods/HttpHead
  [groovyc] 
  [groovyc] java.lang.RuntimeException: java.lang.NoClassDefFoundError: Unable to load class org.jets3t.service.impl.rest.httpclient.RestS3Service due to missing dependency org/apache/http/client/methods/HttpHead
  [groovyc]     at org.codehaus.groovy.control.CompilationUnit.convertUncaughtExceptionToCompilationError(CompilationUnit.java:1083)

VsGrantController.groovy看起来像这样

import org.apache.commons.lang.StringUtils

class VsGrantController {

    def vsAuthenticateService
    def vsGrantService

    def index = { redirect(action:list,params:params) }

    // the delete, save and update actions only accept POST requests
    static allowedMethods = [delete:'POST', save:'POST', update:'POST']

    List listFullAccessResources(VsUser loggedInUser, List resultsGoups) {

        // labels user has full access to
        def cLabels = VsLabel.createCriteria()
        def resultsLabelsFullAccess = cLabels.listDistinct {
            grants {
                and {
                    permission {
                        eq("name", 'Full')
                    }
                    or {
                        eq("accessor", loggedInUser)
                        if(resultsGoups) {
                            or {
                                for (g in resultsGoups) {
                                    eq("accessor", g)
                                }
                            }
                        }
                    }
                }
            }
            order("name")
        }

我是Grails / Groovy Tomcat Webbapp主题的新手所以我希望这个问题不是坏事

Answer 1

警告“不支持接口类型和抽象类类型作为命令对象。”抱怨，因为您的控制器操作具有List resultsGoups参数。这不受支持。

您可以从隐式“params”地图或使用command object中提取参数。

像这样......

def listFullAccessResources(AccessResourcesCommand cmd) {
}

class AccessResourcesCommand {
    Bar loggedInUser
    List resultsGroups
}

Answer 2

您的实际错误是

Unable to load class org.jets3t.service.impl.rest.httpclient.RestS3Service due to missing dependency org/apache/http/client/methods/HttpHead

您需要在类路径中包含 httpclient.jar

Answer 3

将其更改为：

def List listFullAccessResources(VsUser loggedInUser, List resultsGoups)

你的警告会消失......

生成Webbapp War文件 - 将忽略该参数的错误

3 个答案: