一、linux上安装mongodb
1、下载安装包:https://www.mongodb.com/download-center#atlas,上传包mongodb-linux-x86_64-rhel70-3.6.5.tgz到服务器
2、创建mongodb文件夹,作为安装目标文件夹
cd /usr/local;mkdir mongodb
3、解压,移动解压缩后的文件夹下的所有文件到mongodb文件夹下
tar -zxvf mongodb-linux-x86_64-rhel70-3.6.5.tgz;
cd mongodb-linux-x86_64-rhel70-3.6.5;
mv * /usr/local/mongodb
4、创建data/db文件夹存放数据,创建logs文件夹存放日志
cd /usr/local/mongodb;
mkdir -p data/db;
mkdir logs;
5、创建配置文件
cd /usr/local/mongodb/bin;
vim mongodb.conf
加入以下内容:
dbpath = /usr/local/mongodb/data/db
logpath = /usr/local/mongodb/logs/mongodb.log
port = 27017
fork = true
bind_ip = 192.168.2.182,127.0.0.1 #多个ip的配置方式
6、启动MongoDB服务
cd /usr/local/mongodb/bin;
./mongod -f mongodb.conf #加载配置文件
7、客户端访问
./mongo
use wx_applet #创建数据库
show dbs
可以看到,我们刚创建的数据库不在数据库的列表中, 要显示它,我们需要向数据库插入一些数据
db.wx_applet.insert({"name":"yangfeng"})
二、springboot整合mongodb,实现文件的上传下载
1、pom.xml文件中加入:
2、application.properties中加入:
格式:
spring.data.mongodb.uri=mongodb://username:password@ip:port/database
3、这里以文件上传到mongodb来做简单的示例
package com.yangfeng.controller.file;
import com.jp.framework.common.model.ServiceResultHelper;
import com.jp.framework.common.util.Constant;
import com.jp.zpzc.entity.customized.FileInfoAO;
import com.jp.zpzc.entity.customized.UserAO;
import com.mongodb.gridfs.GridFSDBFile;
import com.mongodb.gridfs.GridFSFile;
import org.apache.shiro.SecurityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.gridfs.GridFsTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Part;
import java.io.InputStream;
/**
* 文件上传下载
*
* @author yangfeng
* @date 2018-06-04 12:57
**/
@Controller
@RequestMapping("/file")
public class FileController {
// 获得SpringBoot提供的mongodb的GridFS对象
@Autowired
private GridFsTemplate gridFsTemplate;
/**
* 文件上传
*
* @param request
* @return
*/
@RequestMapping(value = "/uploadFile", method = RequestMethod.POST)
@ResponseBody
public Object uploadFile(HttpServletRequest request) throws Exception {
UserAO user = (UserAO) SecurityUtils.getSubject().getPrincipal();
Part part = request.getPart("file");
// 获得提交的文件名
String fileName = part.getSubmittedFileName();
// 获得文件输入流
InputStream ins = part.getInputStream();
// 获得文件类型
String contentType = part.getContentType();
// 将文件存储到mongodb中,mongodb 将会返回这个文件的具体信息
GridFSFile gridFSFile = gridFsTemplate.store(ins, fileName, contentType);
FileInfoAO fileInfo = new FileInfoAO();
fileInfo.setContentType(contentType);
fileInfo.setFileName(fileName);
fileInfo.setLastUpdateBy(user != null ? user.getId() : null);
fileInfo.setMongoFileId(gridFSFile.getId().toString());
return ServiceResultHelper.genResultWithSuccess(fileInfo);
}
/**
* 下载
*
* @param fileId 文件id
* @param response
* @return
*/
@RequestMapping(value = "/downloadFile")
public void downloadFile(@RequestParam(name = "file_id") String fileId, HttpServletRequest request, HttpServletResponse response) throws Exception {
Query query = Query.query(Criteria.where("_id").is(fileId));
// 查询单个文件
GridFSDBFile gfsfile = gridFsTemplate.findOne(query);
if (gfsfile == null) {
return;
}
String fileName = gfsfile.getFilename().replace(",", "");
//处理中文文件名乱码
if (request.getHeader("User-Agent").toUpperCase().contains("MSIE") ||
request.getHeader("User-Agent").toUpperCase().contains("TRIDENT")
|| request.getHeader("User-Agent").toUpperCase().contains("EDGE")) {
fileName = java.net.URLEncoder.encode(fileName, "UTF-8");
} else {
//非IE浏览器的处理:
fileName = new String(fileName.getBytes("UTF-8"), "ISO-8859-1");
}
// 通知浏览器进行文件下载
response.setContentType(gfsfile.getContentType());
response.setHeader("Content-Disposition", "attachment;filename=\"" + fileName + "\"");
gfsfile.writeTo(response.getOutputStream());
}
/**
* 删除文件
*
* @param fileId
* @return
*/
@RequestMapping(value = "/deleteFile", method = RequestMethod.POST)
@ResponseBody
public Object deleteFile(@RequestParam(name = "file_id") String fileId) {
Query query = Query.query(Criteria.where("_id").is(fileId));
// 查询单个文件
GridFSDBFile gfsfile = gridFsTemplate.findOne(query);
if (gfsfile == null) {
return ServiceResultHelper.genResultWithFaild(Constant.ErrorCode.FILE_NOT_EXIST_ERROR_MSG, Constant.ErrorCode.FILE_NOT_EXIST_ERROR);
}
gridFsTemplate.delete(query);
return ServiceResultHelper.genResultWithSuccess();
}
}