java无法在应用程序引擎中读取上载的blob
正如blobstoreapi页面的概述页面所指出的那样
An app can read a Blobstore value a portion at a time using an API call. can anybody provide a snippet doing exactly that?
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正如blobstoreapi页面的概述页面所指出的那样
An app can read a Blobstore value a portion at a time using an API call. can anybody provide a snippet doing exactly that?
# 1 楼答案
您需要[fetchData方法][1]。它接受一个blob键和一个范围，并从文件中返回该范围的字节
[1]：http://code.google.com/appengine/docs/java/javadoc/com/google/appengine/api/blobstore/BlobstoreService.html#fetchData(com.google.appengine.api.blobstore.BlobKey，长，长）