MongoDB 存储图片等文件有两种方式 (该文章针对的是已经可以使用MONGODB整合Spring的用户) 相关阅读: MongoDB备份与恢复 http
MongoDB 存储图片等文件有两种方式
(该文章针对的是已经可以使用MONGODB整合Spring的用户)
相关阅读:
MongoDB备份与恢复
CentOS编译安装MongoDB
CentOS 编译安装 MongoDB与mongoDB的php扩展
CentOS 6 使用 yum 安装MongoDB及服务器端配置
Ubuntu 13.04下安装MongoDB2.4.3
如何在MongoDB中建立新数据库和集合
MongoDB入门必读(概念与实战并重)
《MongoDB 权威指南》(MongoDB: The Definitive Guide)英文文字版[PDF]
1.使用MongoTemplate
/**
* 存储文件
* @param collectionName 集合名
* @param file 文件
* @param fileid 文件id
* @param companyid 文件的公司id
* @param filename 文件名称
*/
public void SaveFile(String collectionName, File file, String fileid, String companyid, String filename) {
try {
DB db = mongoTemplate.getDb();
// 存储fs的根节点
GridFS gridFS = new GridFS(db, collectionName);
GridFSInputFile gfs = gridFS.createFile(file);
gfs.put("aliases", companyid);
gfs.put("filename", fileid);
gfs.put("contentType", filename.substring(filename.lastIndexOf(".")));
gfs.save();
} catch (Exception e) {
e.printStackTrace();
System.out.println("存储文件时发生错误!!!");
}
}
// 取出文件
public GridFSDBFile retrieveFileOne(String collectionName, String filename) {
try {
DB db = mongoTemplate.getDb();
// 获取fs的根节点
GridFS gridFS = new GridFS(db, collectionName);
GridFSDBFile dbfile = gridFS.findOne(filename);
if (dbfile != null) {
return dbfile;
}
} catch (Exception e) {
// TODO: handle exception
}
return null;
}
//抱歉项目案例不能给你,不过这个是向mongodb存取文件的实现代码,,希望能帮助到你。
//由GridFSDBFile 可以得到inputStream,这样你就明白了吧。
2.使用GridFsTemplate
网上找到的第一种方法总结的非常的不好,Spring结合的感觉不够紧密。 谷歌了下参考了下网上的文章。
参考文章
Spring 伪配置
connect-timeout="1000" max-wait-time="1500" auto-connect-retry="true"
socket-keep-alive="true" socket-timeout="1500" slave-ok="true"
write-number="1" write-timeout="0" write-fsync="true" />
Java 伪代码
List
System.out.println("-----------------");
for (GridFSDBFile file: files) {
System.out.println(file);
}
MongoDB 的详细介绍:请点这里
MongoDB 的下载地址:请点这里

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