java使用ftp上传文件示例分享

import java.io.bytearrayinputstream; 
import java.io.fileoutputstream; 
import java.io.ioexception; 
import java.net.socketexception; 
import java.text.simpledateformat; 
import java.util.date; 

import org.apache.commons.io.ioutils; 
import org.apache.commons.net.ftp.ftpclient; 

/**
 * class name:ftpfiletransmit <br>
 * class description: please write your description <br>
 * remark: <br>
 * @version 1.00 2011-8-9
 */ 
public class ftpfiletransmit { 

    private string ftppath; 
    private string ftpname; 
    private string ftppassword; 
    private string ftpserverip; 

    public ftpfiletransmit() { 
        this.ftppath = "xxx/xxx/"; 
        this.ftpname = "name"; 
        this.ftppassword = "pass"; 
        this.ftpserverip = "192.168.0.xx"; 
    } 

     
    /**
     * method name: saveinftp <br>
     * description: 把文件存储在ftp上 <br>
     * remark: <br>
     * @param foldername            示例"xxx/xxx/"
     * @param filename              示例"thefilename"
     * @param data                  byte[]数组
     * @return  boolean<br>
     */ 
    public boolean saveinftp (string foldername, string filename, byte[] data) { 
        boolean flag = false; 

        // 创建ftp客户端  
        ftpclient ftpclient = new ftpclient(); 
        // 输入流用于读取文件  
//      fileinputstream fis = null;  
        bytearrayinputstream bis = null; 

        try { 
            // 如果foldername 和 filename都不符合基本要求, 那么就没有必要进行ftp操作  
            if (foldername != null 
                    && foldername.compareto("") != 0 
                    && filename != null 
                    && filename.compareto("") != 0) { 

                // 建立ftp连接  
                ftpclient.connect(this.ftpserverip); 

                // 如果登录成功后, 才进行创建输入流  
                if (ftpclient.login(this.ftpname, this.ftppassword)) { 
//                  file srcclientfile = new file("c:/parsexml.xml");  

                    // 实例化输入流  
//                  fis = new fileinputstream(srcclientfile);  

                    if (ftpclient.changeworkingdirectory(foldername)) { 
                        // 将byte[]写入到输入流中, 实例化  
                        bis = new bytearrayinputstream(data); 

                        // 设置缓冲  
                        ftpclient.setbuffersize(1024); 

                        // 设置文件类型(二进制类型)  
                        if (ftpclient.setfiletype(ftpclient.binary_file_type)) { 
                            flag = ftpclient.storefile(filename, bis); 
                        } 
                    } 
                } 
            } 
        } catch (socketexception e) { 
            e.printstacktrace(); 
            flag = false; 
        } catch (ioexception e) { 
            e.printstacktrace(); 
            flag = false; 
        } catch (exception e) { 
            e.printstacktrace(); 
            flag = false; 
        } finally { 
            try { 
                // 关闭输入流  
                ioutils.closequietly(bis); 
                // 关闭连接  
                ftpclient.disconnect(); 
            } catch (ioexception e) { 
                e.printstacktrace(); 
            } 
        } 

        return flag; 
    } 

    /**
     * method name: getfromftp <br>
     * description: 从ftp上读取文件 <br>
     * remark: <br>
     * @return  boolean<br>
     */ 
    public boolean getfromftp () { 
        boolean flag = false; 

        // 创建ftp客户端  
        ftpclient ftpclient = new ftpclient(); 
        // 输出流用于输出文件  
        fileoutputstream fos = null; 

        try { 
            // 建立ftp连接  
            ftpclient.connect(this.ftpserverip); 
            // 如果登录成功后, 才进行创建输出流  
            if (ftpclient.login(this.ftpname, this.ftppassword)) { 
                // ftp文件  
                string distinationfile = "/name/xxx/xxx/xxx文件"; 
                // 实例化输出流  
                fos = new fileoutputstream("c:/parsexml_inftp.xml"); 

                // 设置缓冲  
                ftpclient.setbuffersize(1024); 

                // 设置文件类型(二进制类型)  
                if (ftpclient.setfiletype(ftpclient.binary_file_type)) { 
                    ftpclient.retrievefile(distinationfile, fos); 
                    flag = true; 
                } 
            } 
        } catch (socketexception e) { 
            e.printstacktrace(); 
            flag = false; 
        } catch (ioexception e) { 
            e.printstacktrace(); 
            flag = false; 
        } catch (exception e) { 
            e.printstacktrace(); 
            flag = false; 
        } finally { 
            try { 
                // 关闭输出流  
                ioutils.closequietly(fos); 
                // 关闭连接  
                ftpclient.disconnect(); 
            } catch (ioexception e) { 
                e.printstacktrace(); 
            } 
        } 

        return flag; 
    } 

    public boolean createdirectory() { 
        boolean flag = false; 

        // 创建ftp客户端  
        ftpclient ftpclient = new ftpclient(); 

        try { 
            // 建立ftp连接  
            ftpclient.connect(this.ftpserverip); 
            // 如果登录成功后, 才进行操作  
            if (ftpclient.login(this.ftpname, this.ftppassword)) { 

                // 切换文件路径, 到ftp上的"nndd3"文件夹下  
                if (this.ftppath != null && this.ftppath.compareto("") != 0 
                        && ftpclient.changeworkingdirectory(this.ftppath)) { 
                    simpledateformat f = new simpledateformat("yyyymmdd"); 
                    string time = f.format(new date()); 

                    string foldername = time + "_retransmit"; 
                    ftpclient.makedirectory(foldername); 
                    flag = true; 
                } 
            } 
        } catch (socketexception e) { 
            e.printstacktrace(); 
            flag = false; 
        } catch (ioexception e) { 
            e.printstacktrace(); 
            flag = false; 
        } catch (exception e) { 
            e.printstacktrace(); 
            flag = false; 
        } finally { 
            try { 
                // 关闭连接  
                ftpclient.disconnect(); 
            } catch (ioexception e) { 
                e.printstacktrace(); 
            } 
        } 

        return flag; 
    } 

    public string[] getallfoldernames () { 
        // 创建ftp客户端  
        ftpclient ftpclient = new ftpclient(); 

        try { 
            // 建立ftp连接  
            ftpclient.connect(this.ftpserverip); 

            // 如果登录成功后, 才进行操作  
            if (ftpclient.login(this.ftpname, this.ftppassword)) { 

                // 切换文件路径, 到ftp上的"nndd3"文件夹下  
                if (this.ftppath != null && this.ftppath.compareto("") != 0 
                        && ftpclient.changeworkingdirectory(this.ftppath)) { 
                    // 将当前时间减去2天, 删除的是前两天的数据包  
                    string time = minustime(); 

                    string[] allnames = ftpclient.listnames(); 

                    string[] temp = new string[allnames.length]; 
                    // 初始化数组  
                    for (int j = 0; j < allnames.length; j ++) { 
                        temp[j] = ""; 
                    } 

                    // 找出要删除文件夹的名称  
                    for (int i = 0; i < allnames.length; i ++) { 
                        if (allnames[i].substring(0, 8).compareto(time) <= 0) { 
                            temp[i] = allnames[i]; 
                        } 
                    } 

                    return temp; 
                } 
            } 
        } catch (socketexception e) { 
            e.printstacktrace(); 
        } catch (ioexception e) { 
            e.printstacktrace(); 
        } finally { 
            try { 
                // 关闭连接  
                ftpclient.disconnect(); 
            } catch (ioexception e) { 
                e.printstacktrace(); 
            } 
        } 

        return null; 
    } 

    /**
     * 
     * method name: minustime <br>
     * description: 获取钱两天的时间,如2011-8-1的前两天就是2011-7-30 <br>
     * remark: <br>
     * @return  string<br>
     */ 
    private string minustime() { 
        simpledateformat df=new simpledateformat("yyyymmdd");    
        date d = new date(); 
        string timeminus2 = df.format(new date(d.gettime() - 2 * 24 * 60 * 60 * 1000));    
        return timeminus2; 
    } 

    public static void main(string[] args) { 
        ftpfiletransmit ftpfiletransmit = new ftpfiletransmit(); 
        ftpfiletransmit.deletefoldersinftp(); 

//      boolean flag = ftpfiletransmit.createdirectory();  
//      if (flag) {  
//          system.out.println("****** ftp文件夹创建成功 ******");  
//      }  

//      string foldername = ftpfiletransmit.ftppath + "20110809_retransmit/";  
//      byte[] data = new byte[1024];  
//      for (int i = 0; i < data.length; i ++) {  
//          data[i] = 'a';  
//      }  
//      boolean flag = ftpfiletransmit.saveinftp(foldername, "2011080912345678" ,data);  
//      if (flag) {  
//          system.out.println("****** ftp文件夹创建成功 ******");  
//      }  
    } 
}