关于Java ftp上传图片撕裂问题

package org.yuanqi.modules.tools;


import lombok.extern.slf4j.Slf4j;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;

import java.io.IOException;
import java.io.InputStream;

/**
 * 通过FTP上传文件
 *
 * @Author lvhaibao
 * @Date 2018/2/11 21:43
 */

@Slf4j
public class FTPTools {

    //用于打印日志

    //设置私有不能实例化
    private FTPTools() {

    }
    /**
     * 上传
     * @return
     */
    public static boolean upload(String hostname, int port, String username, String password, String workingPath, InputStream inputStream, String saveName) {
        boolean flag = false;
        FTPClient ftpClient = new FTPClient();
        //1 测试连接
        if (connect(ftpClient, hostname, port, username, password)) {
            try {
                //2 检查工作目录是否存在
                if (ftpClient.changeWorkingDirectory(workingPath)) {
                    // 3 检查是否上传成功
                    if (storeFile(ftpClient, saveName, inputStream)) {
                        flag = true;
                        disconnect(ftpClient);
                    }
                }
            } catch (IOException e) {
                log.error("工作目录不存在");
                e.printStackTrace();
                disconnect(ftpClient);
            }
        }
        return flag;
    }

    /**
     * 断开连接
     *
     * @param ftpClient
     * @throws Exception
     */
    public static void disconnect(FTPClient ftpClient) {
        if (ftpClient.isConnected()) {
            try {
                ftpClient.disconnect();
                log.error("已关闭连接");
            } catch (IOException e) {
                log.error("没有关闭连接");
                e.printStackTrace();
            }
        }
    }

    /**
     * 测试是否能连接
     *
     * @param ftpClient
     * @param hostname  ip或域名地址
     * @param port      端口
     * @param username  用户名
     * @param password  密码
     * @return 返回真则能连接
     */
    public static boolean connect(FTPClient ftpClient, String hostname, int port, String username, String password) {
        boolean flag = false;
        try {
            ftpClient.connect(hostname, port);
            ftpClient.enterLocalPassiveMode();
            ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
            ftpClient.setControlEncoding("UTF-8");
            if (ftpClient.login(username, password)) {
                log.info("连接ftp成功");
                flag = true;
            } else {
                log.error("连接ftp失败，可能用户名或密码错误");
                try {
                    disconnect(ftpClient);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        } catch (IOException e) {
            log.error("连接失败，可能ip或端口错误");
            e.printStackTrace();
        }
        return flag;
    }

    /**
     * 上传文件
     *
     * @param ftpClient
     * @param saveName        全路径。如/home/public/a.txt
     * @param fileInputStream 输入的文件流
     * @return
     */
    public static boolean storeFile(FTPClient ftpClient, String saveName, InputStream fileInputStream) {
        boolean flag = false;
        try {
            ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
            if (ftpClient.storeFile(saveName, fileInputStream)) {
                flag = true;
                log.error("上传成功");
                disconnect(ftpClient);
            }
        } catch (IOException e) {
            log.error("上传失败");
            disconnect(ftpClient);
            e.printStackTrace();
        }
        return flag;
    }
}

　　

 

 

 

 

https://blog.csdn.net/baidu_24140913/article/details/61616357?spm=1001.2101.3001.6650.2&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-2.pc_relevant_antiscan&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-2.pc_relevant_antiscan&utm_relevant_index=5