效果圖 :
注 : ftp伺服器的搭建及建立賬号請自行百度 , 這裡主要介紹圖檔上傳的實作
圖檔上傳工具類 :
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;
public class FtpUtil {
/**
* Description: 向FTP伺服器上傳檔案
* @param host FTP伺服器hostname
* @param port FTP伺服器端口
* @param username FTP登入賬号
* @param password FTP登入密碼
* @param basePath FTP伺服器基礎目錄
* @param filePath FTP伺服器檔案存放路徑。例如分日期存放：/2017/12/12。檔案的路徑為basePath+filePath
* @param filename 上傳到FTP伺服器上的檔案名
* @param input 輸入流
* @return 成功傳回true，否則傳回false
*/
public static boolean uploadFile(String host, int port, String username, String password, String basePath,
String filePath, String filename, InputStream input) {
boolean result = false;
FTPClient ftp = new FTPClient();
ftp.setControlEncoding("UTF-8");
try {
int reply;
ftp.connect(host, port);// 連接配接FTP伺服器
// 如果采用預設端口，可以使用ftp.connect(host)的方式直接連接配接FTP伺服器
ftp.login(username, password);// 登入
reply = ftp.getReplyCode();
if (!FTPReply.isPositiveCompletion(reply)) {
ftp.disconnect();
return result;
}
//切換到上傳目錄
if (!ftp.changeWorkingDirectory(basePath+filePath)) {
//如果目錄不存在建立目錄
String[] dirs = filePath.split("/");
String tempPath = basePath;
for (String dir : dirs) {
if (null == dir || "".equals(dir)) continue;
tempPath += "/" + dir;
if (!ftp.changeWorkingDirectory(tempPath)) {
if (!ftp.makeDirectory(new String(tempPath.getBytes("UTF-8"),"iso-8859-1"))) {
return result;
} else {
ftp.changeWorkingDirectory(tempPath);
}
}
}
}
//設定上傳檔案的類型為二進制類型
ftp.setFileType(FTP.BINARY_FILE_TYPE);
//上傳檔案
ftp.enterLocalPassiveMode();
if (!ftp.storeFile(filename, input)) {
return result;
}
input.close();
ftp.logout();
result = true;
} catch (IOException e) {
e.printStackTrace();
} finally {
if (ftp.isConnected()) {
try {
ftp.disconnect();
} catch (IOException ioe) {
}
}
}
return result;
}
在service層内建立接口及接口實作類
public interface PictureService {
Map uploadPicture(MultipartFile uploadFile);
}
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;
import com.demo.service.PictureService;
import com.demo.util.FtpUtil;
import com.demo.util.IDUtil;
@Service
public class PictureServiceImpl implements PictureService {
//擷取ip位址
private static final String FTP_ADDRESS = "填寫自己伺服器的外網ip位址";
//端口号
private static final int FTP_PORT = 21;
//使用者名
private static final String FTP_USERNAME = "ftp伺服器賬号";
//密碼
private static final String FTP_PASSWORD = "密碼";
//基本路徑
private static final String FTP_BASEPATH = "\\";
//下載下傳位址的基礎url
private static final String IMAGE_BASE_URL = "http://ip位址/ftp";
@Override
public Map uploadPicture(MultipartFile uploadFile) {
Map map = new HashMap();
try {
// 生成一個檔案名
// 擷取舊的名字
String oldName = uploadFile.getOriginalFilename();
String newName = IDUtil.genImageName();
//新名字
newName = newName + oldName.substring(oldName.lastIndexOf("."));
//上傳的路徑
SimpleDateFormat df = new SimpleDateFormat("/yyyy/MM/dd/"); //以日期建立檔案夾利于管理
String imagePath = df.format(new Date()); //目前系統時間保證檔案名不重複
String ftp = "ftp://";
String url = ftp + FTP_ADDRESS + imagePath + newName;
System.out.println("圖檔通路路徑 : " + url);
//端口号
int port = FTP_PORT;
//調用方法，上傳檔案
boolean result = FtpUtil.uploadFile(FTP_ADDRESS, port,
FTP_USERNAME, FTP_PASSWORD, FTP_BASEPATH, imagePath,
newName, uploadFile.getInputStream());
//判斷是否上傳成功
if (!result) {
map.put("code", 0);
map.put("msg", "上傳失敗");
return map;
}
map.put("code", 1);
map.put("msg", "上傳成功");
map.put("url", url);
return map;
} catch (IOException e) {
map.put("code", 0);
map.put("msg", "上傳失敗");
return map;
}
}
}
實際調用 :
@RequestMapping(value = "insert_detail")
public String insert_detail(
@RequestParam(value = "file", required = false) MultipartFile file,
@RequestParam(value = "productOne", required = false) MultipartFile productOne,
@RequestParam(value = "productTwo", required = false) MultipartFile productTwo,
@RequestParam(value = "productThree", required = false) MultipartFile productThree,
@RequestParam(value = "productFour", required = false) MultipartFile productFour,
@RequestParam(value = "productFive", required = false) MultipartFile productFive,
@RequestParam(value = "productSix", required = false) MultipartFile productSix,
ShopDetail shopdetail) {
Login user = (Login) request.getSession().getAttribute("user");
String createCode = String.valueOf(user.getId());
String createName = user.getRealname();
//控制流程可以忽略 根據自己的業務來編寫
if(!file.isEmpty()){
Map map = pictureService.uploadPicture(file);
String ftpPath = (String) map.get("url");
String posPath = ftpPath.substring(20);
String url = FRONTPATH + posPath;
shopdetail.setUrl(url);
}
if (!productOne.isEmpty()) {
Map map = pictureService.uploadPicture(productOne);
String ftpPath = (String) map.get("url");
String posPath = ftpPath.substring(20);
String url = FRONTPATH + posPath;
shopdetail.setProduct1(url);
}
if (!productTwo.isEmpty()) {
Map map = pictureService.uploadPicture(productTwo);
String ftpPath = (String) map.get("url");
String posPath = ftpPath.substring(20);
String url = FRONTPATH + posPath;
shopdetail.setProduct2(url);
}
if (!productThree.isEmpty()) {
Map map = pictureService.uploadPicture(productThree);
String ftpPath = (String) map.get("url");
String posPath = ftpPath.substring(20);
String url = FRONTPATH + posPath;
shopdetail.setProduct3(url);
}
if (!productFour.isEmpty()) {
Map map = pictureService.uploadPicture(productFour);
String ftpPath = (String) map.get("url");
String posPath = ftpPath.substring(20);
String url = FRONTPATH + posPath;
shopdetail.setProduct4(url);
}
if (!productFive.isEmpty()) {
Map map = pictureService.uploadPicture(productFive);
String ftpPath = (String) map.get("url");
String posPath = ftpPath.substring(20);
String url = FRONTPATH + posPath;
shopdetail.setProduct5(url);
}
if (!productSix.isEmpty()) {
Map map = pictureService.uploadPicture(productSix);
String ftpPath = (String) map.get("url");
String posPath = ftpPath.substring(20);
String url = FRONTPATH + posPath;
shopdetail.setProduct6(url);
}
shopdetail.setCreateCode(createCode);
shopdetail.setCreateName(createName);
sdService.addShopDetail(shopdetail);
System.out.println("圖檔上傳成功");
return "redirect:query_detail";
}
實際調用非常簡單 , 隻需要一句pictureService.uploadPicture("頁面傳遞過來的檔案名稱")即可實作 , 傳回的是map對象 , 通過map拿到ftp的路徑 , 及經過字元串處理後的檔案名稱 , 拼接成完整的圖檔檔案路徑進行儲存 , 最後檢視上傳後的檔案效果如下 :
可以看到檔案夾是以日期年月日進行分類 , 管理起來非常友善 , 到此圖檔上傳已經可以實作 , 以我個人為例 , 我ftp資源存放目錄設定的是項目工程目錄 , 當重新釋出的時候會導緻之前上傳的圖檔被清空 , 需要提前備份好ftp上傳的圖檔資源複制到準備重新釋出的項目目錄中 , 再進行釋出 , 以免資源丢失造成不必要的麻煩