Wie SpringBoot+nginx die Funktion zum Hochladen von Ressourcen implementiert

server {
 listen  9090;
 server_name localhost;

 location ~ .(jpg|png|jpeg|gif|bmp)$ { #可识别的文件后缀
 root /usr/nginx/image/; #图片的映射路径
  autoindex on; #开启自动索引
 expires 1h; #过期时间
 }
 location ~ .(css|js)$ {
  root /usr/nginx/static/;
  autoindex on;
  expires 1h;
 } 
 location ~ .(avi|mov|rmvb|rm|flv|mp4|3gp)$ {
  root /usr/nginx/video/;
  autoindex on;
  expires 1h;
 }

<parent>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-parent</artifactid>
 <version>2.1.7.release</version>
</parent>
<dependencies>
 <dependency>
  <groupid>org.springframework.boot</groupid>
  <artifactid>spring-boot-starter-web</artifactid>
  <version>2.1.7.release</version>
 </dependency>
 <dependency>
  <groupid>org.springframework.boot</groupid>
  <artifactid>spring-boot-starter-test</artifactid>
  <version>2.1.7.release</version>
  <scope>test</scope>
 </dependency>
 <!-- apache工具组件 -->
 <dependency>
  <groupid>org.apache.commons</groupid>
  <artifactid>commons-lang3</artifactid>
  <version>3.8.1</version>
 </dependency>
 <dependency>
  <groupid>org.apache.commons</groupid>
  <artifactid>commons-io</artifactid>
  <version>1.3.2</version>
 </dependency>
 <dependency>
  <groupid>commons-net</groupid>
  <artifactid>commons-net</artifactid>
  <version>3.6</version>
 </dependency>
 <!-- 文件上传组件 -->
 <dependency>
  <groupid>commons-fileupload</groupid>
  <artifactid>commons-fileupload</artifactid>
  <version>1.3.3</version>
 </dependency>
 <dependency>
  <groupid>org.projectlombok</groupid>
  <artifactid>lombok</artifactid>
  <version>1.16.22</version>
 </dependency>
 <dependency>
  <groupid>com.jcraft</groupid>
  <artifactid>jsch</artifactid>
  <version>0.1.54</version>
 </dependency>
 <dependency>
  <groupid>joda-time</groupid>
  <artifactid>joda-time</artifactid>
  <version>2.10.3</version>
 </dependency>
</dependencies>

ftp:
 host: 自己服务器ip
 username: 服务器账号
 password: 服务器密码
 port: 22
 rootpath: /usr/nginx/image
 img:
 url: http://ip:9090/  # ftp.img.url 可以不添加，这里只是为了上传文件成功后返回文件路径

import com.jcraft.jsch.*;
import org.slf4j.logger;
import org.slf4j.loggerfactory;
import org.springframework.beans.factory.annotation.value;
import org.springframework.stereotype.component;
import java.io.inputstream;
import java.util.properties;
@component
public class ftputil {
 private static logger logger = loggerfactory.getlogger(ftputil.class);
 /**
  * ftp服务器ip地址
  */
 private static string host;
 @value("${ftp.host}")
 public void sethost(string val){
  ftputil.host = val;
 }
 /**
  * 端口
  */
 private static int port;
 @value("${ftp.port}")
 public void setport(int val){
  ftputil.port = val;
 }
 /**
  * 用户名
  */
 private static string username;
 @value("${ftp.username}")
 public void setusername(string val){
  ftputil.username = val;
 }
 /**
  * 密码
  */
 private static string password;
 @value("${ftp.password}")
 public void setpassword(string val){
  ftputil.password = val;
 }
 /**
  * 存放图片的根目录
  */
 private static string rootpath;
 @value("${ftp.rootpath}")
 public void setrootpath(string val){
  ftputil.rootpath = val;
 }
 /**
  * 存放图片的路径
  */
 private static string imgurl;
 @value("${ftp.img.url}")
 public void setimgurl(string val){
  ftputil.imgurl = val;
 }
 /**
  * 获取连接
  */
 private static channelsftp getchannel() throws exception{
  jsch jsch = new jsch();
  //->ssh root@host:port
  session sshsession = jsch.getsession(username,host,port);
  //密码
  sshsession.setpassword(password);
  properties sshconfig = new properties();
  sshconfig.put("stricthostkeychecking", "no");
  sshsession.setconfig(sshconfig);
  sshsession.connect();
  channel channel = sshsession.openchannel("sftp");
  channel.connect();
  return (channelsftp) channel;
 }
 /**
  * ftp上传图片
  * @param inputstream 图片io流
  * @param imagepath 路径，不存在就创建目录
  * @param imagesname 图片名称
  * @return urlstr 图片的存放路径
  */
 public static string putimages(inputstream inputstream, string imagepath, string imagesname){
  try {
   channelsftp sftp = getchannel();
   string path = rootpath + imagepath + "/";
   createdir(path,sftp);
   //上传文件
   sftp.put(inputstream, path + imagesname);
   logger.info("上传成功！");
   sftp.quit();
   sftp.exit();
   //处理返回的路径
   string resultfile;
   resultfile = imgurl + imagepath + imagesname;
   return resultfile;
  } catch (exception e) {
   logger.error("上传失败：" + e.getmessage());
  }
  return "";
 }
 /**
  * 创建目录
  */
 private static void createdir(string path,channelsftp sftp) throws sftpexception {
  string[] folders = path.split("/");
  sftp.cd("/");
  for ( string folder : folders ) {
   if ( folder.length() > 0 ) {
    try {
     sftp.cd( folder );
    }catch ( sftpexception e ) {
     sftp.mkdir( folder );
     sftp.cd( folder );
    }
   }
  }
 }
 /**
  * 删除图片
  */
 public static void delimages(string imagesname){
  try {
   channelsftp sftp = getchannel();
   string path = rootpath + imagesname;
   sftp.rm(path);
   sftp.quit();
   sftp.exit();
  } catch (exception e) {
   e.printstacktrace();
  }
 }
}

import java.util.random;
public class idutils {
 /**
  * 生成随机图片名
  */
 public static string genimagename() {
  //取当前时间的长整形值包含毫秒
  long millis = system.currenttimemillis();
  //加上三位随机数
  random random = new random();
  int end3 = random.nextint(999);
  //如果不足三位前面补0
  string str = millis + string.format("%03d", end3);
  return str;
 }
}

import com.wzy.util.ftputil;
import com.wzy.util.idutils;
import lombok.extern.slf4j.slf4j;
import org.joda.time.datetime;
import org.springframework.stereotype.service;
import org.springframework.web.multipart.multipartfile;
import java.io.ioexception;
import java.io.inputstream;
/**
 * @package: com.wzy.service
 * @author: clarence1
 * @date: 2019/10/4 21:34
 */
@service
@slf4j
public class nginxservice {
 public object uploadpicture(multipartfile uploadfile) {
  //1、给上传的图片生成新的文件名
  //1.1获取原始文件名
  string oldname = uploadfile.getoriginalfilename();
  //1.2使用idutils工具类生成新的文件名，新文件名 = newname + 文件后缀
  string newname = idutils.genimagename();
  assert oldname != null;
  newname = newname + oldname.substring(oldname.lastindexof("."));
  //1.3生成文件在服务器端存储的子目录
  string filepath = new datetime().tostring("/yyyymmdd/");
  //2、把图片上传到图片服务器
  //2.1获取上传的io流
  inputstream input = null;
  try {
   input = uploadfile.getinputstream();
  } catch (ioexception e) {
   e.printstacktrace();
  }
  //2.2调用ftputil工具类进行上传
  return ftputil.putimages(input, filepath, newname);
 }
}

import com.fasterxml.jackson.core.jsonprocessingexception;
import com.fasterxml.jackson.databind.objectmapper;
import com.wzy.service.nginxservice;
import lombok.extern.slf4j.slf4j;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.web.bind.annotation.postmapping;
import org.springframework.web.bind.annotation.requestparam;
import org.springframework.web.bind.annotation.restcontroller;
import org.springframework.web.multipart.multipartfile;
import java.util.hashmap;
import java.util.map;
@restcontroller
@slf4j
public class nginxcontroller {
 @autowired
 private nginxservice nginxservice;
 /**
  * 可上传图片、视频，只需在nginx配置中配置可识别的后缀
  */
 @postmapping("/upload")
 public string pictureupload(@requestparam(value = "file") multipartfile uploadfile) {
  long begin = system.currenttimemillis();
  string json = "";
  try {
   object result = nginxservice.uploadpicture(uploadfile);
   json = new objectmapper().writevalueasstring(result);
  } catch (jsonprocessingexception e) {
   e.printstacktrace();
  }
  long end = system.currenttimemillis();
  log.info("任务结束，共耗时：[" + (end-begin) + "]毫秒");
  return json;
 }
 @postmapping("/uploads")
 public object picturesupload(@requestparam(value = "file") multipartfile[] uploadfile) {
  long begin = system.currenttimemillis();
  map<object, object> map = new hashmap<>(10);
  int count = 0;
  for (multipartfile file : uploadfile) {
   object result = nginxservice.uploadpicture(file);
   map.put(count, result);
   count++;
  }
  long end = system.currenttimemillis();
  log.info("任务结束，共耗时：[" + (end-begin) + "]毫秒");
  return map;
 }
}