FileStoreImpl.java 文件源码

/**
 * Method to store a file within MongoDB's GridFS.
 * @param inputStream containing the file to store.
 * @param fileName the file name under which the file is to be saved.
 * @param contentType a mime type describing the contents of the file.
 * @return a GridFSDBFile object on which an InputStream can be opened.
 */
public FSFile store(InputStream inputStream, String fileName, String contentType) {
    try (AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(SpringMongoConfig.class)) {
        GridFsOperations gridOperations =
                (GridFsOperations) ctx.getBean("gridFsTemplate");
        GridFSFile file = gridOperations.store(inputStream, fileName, contentType);
        return new FSFile((ObjectId) file.getId(), fileName, contentType, file.getLength());
    }
}