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JAVA FTP 上传文件

发表于:2024-11-23 作者:千家信息网编辑
千家信息网最后更新 2024年11月23日,下面展示通过http 方式上传文件到服务器:/**文件上传接口@param request【module】【filename】@param response@throws IOException */
千家信息网最后更新 2024年11月23日JAVA FTP 上传文件

下面展示通过http 方式上传文件到服务器:

/**

  • 文件上传接口
  • @param request【module】【filename】
  • @param response
  • @throws IOException */
    @RequestMapping("/upload")
    br/>*/
    @RequestMapping("/upload")

    String module=params.get("module");//请求模块,根据模块请求的文件放到不通目录
    log.info("upload method param:"+module);
    if (!validPublicModule(module)) {
    ReponseUtils.renderJsonp(request, response, RespObj.failedObj("上传目录不正确"));
    return;
    }
    //打开连接FTP
    FtpUtils ftp=FtpUtils.getInstance();
    InputStream input = null;
    if(filename != null){
    log.info("ftp opern sucess:");
    String newFileName=newfileName(filename);
    input=filename.getInputStream();
    String ftppath=getDirPath(module) ;
    Boolean isfalg=ftp.uploadFile(input, newFileName, ftppath);
    if(!isfalg){
    ReponseUtils.renderJsonp(request, response, RespObj.failedObj("文件上传异常"));
    return;
    }
    RespObj obj = RespObj.successObj();
    String url=ftppath+File.separator+newFileName;
    log.info("ftp url:"+url);
    obj.setData(url);
    obj.setErrorMsg("sucess");
    ReponseUtils.renderJsonp(request, response, obj);
    }
    }

        FTP 工具类:    package com.ejauto.core.ftp;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;

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;
import org.apache.log4j.Logger;

import com.ejauto.core.utils.Constants;

public class FtpUtils {

Logger log = Logger.getLogger(FtpUtils.class);private FTPClient ftpClient = null;private String server;private int port;private String userName;private String userPassword;private FtpUtils(String server,int port,String userName,String userPassword) {    this.server = server;    this.port = port;    this.userName = userName;    this.userPassword = userPassword;}/** * 连接服务器 * @return 连接成功与否 true:成功, false:失败 */public boolean open() {    if (ftpClient != null && ftpClient.isConnected()) {        return true;    }    try {        ftpClient = new FTPClient();        // 连接        ftpClient.connect(this.server, this.port);        ftpClient.login(this.userName, this.userPassword);        setFtpClient(ftpClient);        // 检测连接是否成功        int reply = ftpClient.getReplyCode();        if (!FTPReply.isPositiveCompletion(reply)) {            this.close();            System.err.println("FTP server refused connection.");            //System.exit(1);        }        log.info("open FTP success:" + this.server + ";port:" + this.port + ";name:" + this.userName                + ";pwd:" + this.userPassword);        ftpClient.setFileType(FTP.BINARY_FILE_TYPE); // 设置上传模式.binally  or ascii        return true;    } catch (Exception ex) {        this.close();        ex.printStackTrace();        return false;    }}/** * 切换到父目录 * @return 切换结果 true:成功, false:失败 */@SuppressWarnings("unused")private boolean changeToParentDir() {    try {        return ftpClient.changeToParentDirectory();    } catch (IOException e) {        e.printStackTrace();        return false;    }}/** * 改变当前目录到指定目录 * @param dir 目的目录 * @return 切换结果 true:成功,false:失败 */@SuppressWarnings("unused")private boolean cd(String dir) {    try {        return ftpClient.changeWorkingDirectory(dir);    } catch (IOException e) {        e.printStackTrace();        return false;    }}/** * 获取目录下所有的文件名称 *  * @param filePath 指定的目录 * @return 文件列表,或者null */@SuppressWarnings("unused")private FTPFile[] getFileList(String filePath) {    try {        return ftpClient.listFiles(filePath);    } catch (IOException e) {        e.printStackTrace();        return null;    }}/** * 层层切换工作目录 * @param ftpPath 目的目录 * @return 切换结果 */public boolean changeDir(String ftpPath) {    if (!ftpClient.isConnected()) {        return false;    }    try {        // 将路径中的斜杠统一        char[] chars = ftpPath.toCharArray();        StringBuffer sbStr = new StringBuffer(256);        for (int i = 0; i < chars.length; i++) {            if ('\\' == chars[i]) {                sbStr.append('/');            } else {                sbStr.append(chars[i]);            }        }        ftpPath = sbStr.toString();        if (ftpPath.indexOf('/') == -1) {            // 只有一层目录            ftpClient.changeWorkingDirectory(new String(ftpPath.getBytes(), "iso-8859-1"));        } else {            // 多层目录循环创建            String[] paths = ftpPath.split("/");            for (int i = 0; i < paths.length; i++) {                ftpClient.changeWorkingDirectory(new String(paths[i].getBytes(), "iso-8859-1"));            }        }        return true;    } catch (Exception e) {        e.printStackTrace();        return false;    }}/** * 循环创建目录,并且创建完目录后,设置工作目录为当前创建的目录下 * @param ftpPath 需要创建的目录 * @return */public boolean mkDir(String ftpPath) {    if (!ftpClient.isConnected()) {        return false;    }    try {        // 将路径中的斜杠统一        char[] chars = ftpPath.toCharArray();        StringBuffer sbStr = new StringBuffer(256);        for (int i = 0; i < chars.length; i++) {            if ('\\' == chars[i]) {                sbStr.append('/');            } else {                sbStr.append(chars[i]);            }        }        ftpPath = sbStr.toString();        if (ftpPath.indexOf('/') == -1) {            // 只有一层目录            ftpClient.makeDirectory(new String(ftpPath.getBytes(), "iso-8859-1"));            ftpClient.changeWorkingDirectory(new String(ftpPath.getBytes(), "iso-8859-1"));        } else {            // 多层目录循环创建            String[] paths = ftpPath.split("/");            for (int i = 0; i < paths.length; i++) {                ftpClient.makeDirectory(new String(paths[i].getBytes(), "iso-8859-1"));                ftpClient.changeWorkingDirectory(new String(paths[i].getBytes(), "iso-8859-1"));            }        }        return true;    } catch (Exception e) {        e.printStackTrace();        return false;    }}/** * 上传文件到FTP服务器 * @param localDirectoryAndFileName 本地文件目录和文件名 * @param ftpFileName 上传到服务器的文件名 * @param ftpDirectory FTP目录如:/path2/pathb2/,如果目录不存在会自动创建目录 * @return */public boolean uploadFile(InputStream fis, String ftpFileName, String ftpDirectory) {    if (!ftpClient.isConnected()) {        return false;    }    boolean flag = false;    if (ftpClient != null) {        //File srcFile = new File(localDirectoryAndFileName);        //InputStream fis = null;        try {            //fis = new InputStream(srcFile);            // 创建目录            this.mkDir(ftpDirectory);            ftpClient.setBufferSize(100000);            ftpClient.setControlEncoding("UTF-8");            // 设置文件类型(二进制)            ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);            ftpClient.enterLocalPassiveMode();            // 上传            log.error("ftpClient.storeFile:");            flag = ftpClient.storeFile(new String(ftpFileName.getBytes("UTF-8"),"iso-8859-1"), fis);        } catch (Exception e) {            this.close();            e.printStackTrace();            log.error("Exception:"+e.getMessage());            return false;        } finally {            try {                fis.close();            } catch (IOException e) {                e.printStackTrace();            }        }    }    return flag;}/** * 从FTP服务器上下载文件 * @param ftpDirectoryAndFileName ftp服务器文件路径,以/dir形式开始 * @param localDirectoryAndFileName 保存到本地的目录 * @return */public boolean get(String ftpDirectoryAndFileName, String localDirectoryAndFileName) {    if (!ftpClient.isConnected()) {        return false;    }    ftpClient.enterLocalPassiveMode(); // Use passive mode as default    try {        // 将路径中的斜杠统一        char[] chars = ftpDirectoryAndFileName.toCharArray();        StringBuffer sbStr = new StringBuffer(256);        for (int i = 0; i < chars.length; i++) {            if ('\\' == chars[i]) {                sbStr.append('/');            } else {                sbStr.append(chars[i]);            }        }        ftpDirectoryAndFileName = sbStr.toString();        String filePath = ftpDirectoryAndFileName.substring(0, ftpDirectoryAndFileName.lastIndexOf("/"));        String fileName = ftpDirectoryAndFileName.substring(ftpDirectoryAndFileName.lastIndexOf("/") + 1);        this.changeDir(filePath);        ftpClient.retrieveFile(new String(fileName.getBytes(), "iso-8859-1"),                new FileOutputStream(localDirectoryAndFileName)); // download        // file        //System.out.println(ftpClient.getReplyString()); // check result        //System.out.println("从ftp服务器上下载文件:" + ftpDirectoryAndFileName + ", 保存到:" + localDirectoryAndFileName);        return true;    } catch (IOException e) {        e.printStackTrace();        return false;    }}/** * 返回FTP目录下的文件列表 * @param pathName * @return */public String[] getFileNameList(String pathName) {    try {        return ftpClient.listNames(pathName);    } catch (IOException e) {        e.printStackTrace();        return null;    }}/** * 删除FTP上的文件 * @param ftpDirAndFileName 路径开头不能加/,比如应该是test/filename1 * @return */public boolean deleteFile(String ftpDirAndFileName) {    if (!ftpClient.isConnected()) {        return false;    }    try {        return ftpClient.deleteFile(ftpDirAndFileName);    } catch (IOException e) {        e.printStackTrace();        return false;    }}/** * 删除FTP目录 * @param ftpDirectory * @return */public boolean deleteDirectory(String ftpDirectory) {    if (!ftpClient.isConnected()) {        return false;    }    try {        return ftpClient.removeDirectory(ftpDirectory);    } catch (IOException e) {        e.printStackTrace();        return false;    }}/** * 关闭链接 */public void close() {    try {        if (ftpClient != null && ftpClient.isConnected()) {            ftpClient.disconnect();        }        System.out.println("成功关闭连接,服务器ip:" + this.server + ", 端口:" + this.port);    } catch (Exception e) {        e.printStackTrace();    }}public FTPClient getFtpClient() {    return ftpClient;}public void setFtpClient(FTPClient ftpClient) {    this.ftpClient = ftpClient;}public void download(HttpServletResponse response,String ftpDirectoryAndFileName){    if (!ftpClient.isConnected()) {        return ;    }    ftpClient.enterLocalPassiveMode(); // Use passive mode as default    try {        // 将路径中的斜杠统一        char[] chars = ftpDirectoryAndFileName.toCharArray();        StringBuffer sbStr = new StringBuffer(256);        for (int i = 0; i < chars.length; i++) {            if ('\\' == chars[i]) {                sbStr.append('/');            } else {                sbStr.append(chars[i]);            }        }        ftpDirectoryAndFileName = sbStr.toString();        String filePath = ftpDirectoryAndFileName.substring(0, ftpDirectoryAndFileName.lastIndexOf("/"));        String fileName = ftpDirectoryAndFileName.substring(ftpDirectoryAndFileName.lastIndexOf("/") + 1);        this.changeDir(filePath);        InputStream inputStream = ftpClient.retrieveFileStream(new String(fileName.getBytes(), "iso-8859-1"));        ServletOutputStream outputStream = null;        try {            response.setHeader("content-disposition", "attachment;filename="+fileName);            //通知浏览器下载文件类型,解决部分浏览器下载APK为.htm格式            response.setContentType("application/octet-stream");            outputStream = response.getOutputStream();            byte[] buffer = new byte[8192];            int len = inputStream.read(buffer);            while (len != -1) {                outputStream.write(buffer, 0, len);                len = inputStream.read(buffer);            }            outputStream = response.getOutputStream();            ByteArrayOutputStream swapStream = new ByteArrayOutputStream();              byte[] buff = new byte[100];              int rc = 0;              while ((rc = inputStream.read(buff, 0, 100)) > 0) {                  swapStream.write(buff, 0, rc);              }              byte[] in2b = swapStream.toByteArray();              outputStream.write(in2b);        } catch (IOException e) {            e.printStackTrace();        } finally {            try {                if(inputStream!=null){                    inputStream.close();                }                if(outputStream!=null){                    outputStream.flush();                    outputStream.close();                }            } catch (IOException e) {                e.printStackTrace();            }        }    }catch(Exception e){        log.info(e.getMessage());        e.printStackTrace();    }}

public void downloadImg(HttpServletResponse response,String ftpDirectoryAndFileName){

    if (!ftpClient.isConnected()) {        return ;    }    ftpClient.enterLocalPassiveMode(); // Use passive mode as default    try {        // 将路径中的斜杠统一        char[] chars = ftpDirectoryAndFileName.toCharArray();        StringBuffer sbStr = new StringBuffer(256);        for (int i = 0; i < chars.length; i++) {            if ('\\' == chars[i]) {                sbStr.append('/');            } else {                sbStr.append(chars[i]);            }        }        ftpDirectoryAndFileName = sbStr.toString();        String filePath = ftpDirectoryAndFileName.substring(0, ftpDirectoryAndFileName.lastIndexOf("/"));        String fileName = ftpDirectoryAndFileName.substring(ftpDirectoryAndFileName.lastIndexOf("/") + 1);        this.changeDir(filePath);        InputStream inputStream = ftpClient.retrieveFileStream(new String(fileName.getBytes(), "iso-8859-1"));        ServletOutputStream outputStream = null;        try {            outputStream = response.getOutputStream();            byte[] buffer = new byte[8192];            int len = inputStream.read(buffer);            while (len != -1) {                outputStream.write(buffer, 0, len);                len = inputStream.read(buffer);            }            outputStream = response.getOutputStream();            ByteArrayOutputStream swapStream = new ByteArrayOutputStream();              byte[] buff = new byte[100];              int rc = 0;              while ((rc = inputStream.read(buff, 0, 100)) > 0) {                  swapStream.write(buff, 0, rc);              }              byte[] in2b = swapStream.toByteArray();              outputStream.write(in2b);        } catch (IOException e) {            e.printStackTrace();        } finally {            try {                if(inputStream!=null){                    inputStream.close();                }                if(outputStream!=null){                    outputStream.flush();                    outputStream.close();                }            } catch (IOException e) {                e.printStackTrace();            }        }    }catch(Exception e){        log.info(e.getMessage());        e.printStackTrace();    }}public boolean upload(InputStream fis, String ftpDirectory){    String ftpFileName = ftpDirectory.substring(ftpDirectory.indexOf("/"));    return uploadFile(fis, ftpFileName, ftpDirectory);}public static FtpUtils getInstance(){    String host = Constants.FTP_HOST;    int port = Integer.valueOf(Constants.FTP_PORT).intValue();    String user = Constants.FTP_USERNAME;    String pwd = Constants.FTP_PWD;    FtpUtils f = new FtpUtils(host, port, user, pwd);    if(f.open()){        return f;    }    return null;}public static void main(String[] args) {    FileInputStream input = null;    FtpUtils f=FtpUtils.getInstance();}

public String getFilePath(HttpServletResponse response,String fileName) throws IOException{

 if (!ftpClient.isConnected()) {     return ""; } ftpClient.enterLocalPassiveMode(); // Use passive mode as default ftpClient.getPassiveLocalIPAddress(); System.out.println("getPassiveLocalIPAddress:"+ftpClient.getLocalAddress()); String url="ftp://"+ftpClient.getLocalAddress()+File.separator+fileName;//拼接ftp 路径 return url;}

}

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