我已经看过了,但没有答案可以解释我的问题.我首先使用了这里提供的示例(GetObject类),它立即在我的桌面上运行.但是,我的朋友无法让它在他的机器上工作,也不能在我们的EC2实例上工作.
有人提到有指定的凭证文件,这是有道理的,但我从来没有这样做,我很确定默认权限设置为允许访问此存储桶.
这是堆栈跟踪:
Exception in thread "main" java.lang.IllegalArgumentException: profile file cannot be null
at com.amazonaws.util.ValidationUtils.assertNotNull(ValidationUtils.java:37)
at com.amazonaws.auth.profile.ProfilesConfigFile.<init>(ProfilesConfigFile.java:142)
at com.amazonaws.auth.profile.ProfilesConfigFile.<init>(ProfilesConfigFile.java:133)
at com.amazonaws.auth.profile.ProfilesConfigFile.<init>(ProfilesConfigFile.java:100)
at com.amazonaws.auth.profile.ProfileCredentialsProvider.getCredentials(ProfileCredentialsProvider.java:135)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.getCredentialsFromContext(AmazonHttpClient.java:1029)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1049)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:949)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:662)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:636)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:619)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$300(AmazonHttpClient.java:587)
at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:574)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:446)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4035)
at com.amazonaws.services.s3.AmazonS3Client.getBucketRegionViaHeadRequest(AmazonS3Client.java:4474)
at com.amazonaws.services.s3.AmazonS3Client.fetchRegionFromCache(AmazonS3Client.java:4448)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4020)
at com.amazonaws.services.s3.AmazonS3Client.getObject(AmazonS3Client.java:1307)
at GetObject.main(GetObject.java:26)
我可以保证getNameRequest中的bucketName和key params都不为null.这里的差异是什么？为什么它只能在我的电脑上成功？这完全与我不得不补充aws-sdk jar应该已经拥有的许多罐子这一事实有关(jackson-databind,jackson-core,jackson-annotations,httpclient,httpcore,commons-logging和joda-时间)？看起来很相似,但是在其他方面无法解释的错误(给出非空的参数,aws-sdk中的某些东西说它是空的).