Java操作MongoDB gridfs

[zhangxinmingsheng]

Java操作的代码：

public static GridFSDBFile getById(Object id) {
DBObject query = new BasicDBObject("_id", id);
GridFSDBFile gridFSDBFile = gridFS.findOne(query);
return gridFSDBFile;
}

调用了这个方法进行文件下载：
GridFSDBFile gridFSDBFile = MongoGridFS.getById(id);
logger.info(String.format("%s,%s", ipString, fileMD5));
if (gridFSDBFile != null) {
renderBinary(gridFSDBFile.getInputStream(),
gridFSDBFile.getFilename());
}

获取文件的时候
抛出异常：
-----------------------------
Caused by: com.mongodb.MongoException: can't find a chunk! file id: 3be1e554ff600ddb2fa8f90cf68e9d33 chunk: 0
at com.mongodb.gridfs.GridFSDBFile.getChunk(GridFSDBFile.java:102)
at com.mongodb.gridfs.GridFSDBFile$MyInputStream.read(GridFSDBFile.java:154)
at com.mongodb.gridfs.GridFSDBFile$MyInputStream.read(GridFSDBFile.java:144)
at play.mvc.results.RenderBinary.apply(RenderBinary.java:169)
... 27 more
-------------------------------

请教大侠帮忙看看什么问题，该怎么解决？

使用的java驱动mongo的 jar 是 mongo-java-driver.2.11.2.jar

谢谢！

[rucypli]

先用mongofiles get试试

[RedFox_Forum]

关于Java操作GridFS的Demo，可以参考一下这个帖子 http://forum.foxera.com/mongodb/topic/356/mongodb-java%E6%93%8D%E4%BD%9Cmongodb%E5%AE%9E%E7%8E%B0%E6%96%87%E4%BB%B6%E4%B8%8A%E4%BC%A0%E4%B8%8B%E8%BD%BD