用Java写个ftp传输类实现文件的上传和下载，用ikvmc转成dll

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1.Java类：

package com.wjy.ftp.transmission;import java.io.File;import java.io.FileOutputStream;import java.io.OutputStream;import java.io.StringBufferInputStream;import org.apache.commons.net.ftp.FTPClient;import org.apache.commons.net.ftp.FTPFile;import org.apache.commons.net.ftp.FTPReply;public class FtpTransmission {    private String serverUrl=null;    private String userName=null;    private String password=null;    private String storePath=null;    private int port=0;        public FtpTransmission(String serverUrl, String userNameString,            String password, String storePath, int port) {        super();        this.serverUrl = serverUrl;        this.userName = userNameString;        this.password = password;        this.storePath = storePath;        this.port = port;    }    public String getServerUrl() {        return serverUrl;    }    public void setServerUrl(String serverUrl) {        this.serverUrl = serverUrl;    }    public String getUserNameString() {        return userName;    }    public void setUserNameString(String userNameString) {        this.userName = userNameString;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }    public String getStorePath() {        return storePath;    }    public void setStorePath(String storePath) {        this.storePath = storePath;    }    public int getPort() {        return port;    }    public void setPort(int port) {        this.port = port;    }    /**     * Description:实现ftp的文件上传     * @author 王吉元     * @Version 1.0 Dec 16,2013     * @param fileName:上传的文件名称     * @param fileContent:文件的内容     * @return  成功返回ture,失败返回false     */    public boolean fileUpLoad(String fileName,String contents){        boolean isSuccessed=false;        FTPClient ftpClient=new FTPClient();        StringBufferInputStream input=new StringBufferInputStream(contents);        try {            int reply=0;            ftpClient.connect(serverUrl,port);            ftpClient.login(userName, password);            reply=ftpClient.getReplyCode();            if(!FTPReply.isPositiveCompletion(reply)){                ftpClient.disconnect();                return isSuccessed;            }            ftpClient.changeWorkingDirectory(storePath);            ftpClient.storeFile(fileName, input);                        input.close();            ftpClient.logout();            isSuccessed=true;        } catch (Exception e) {            // TODO: handle exception            e.printStackTrace();        }finally{            if(ftpClient.isConnected()){                try {                    ftpClient.disconnect();                } catch (Exception e2) {                    // TODO: handle exception                    e2.printStackTrace();                }            }        }        return isSuccessed;    }    /**     * Description:实现ftp的文件下载     * @author 王吉元     * @Version 1.0 Dec 16,2013     * @param fileName:下载的文件名称     * @param localPath:下载后保存在本地的路径     * @return  成功返回ture,失败返回false     */    public boolean fileDownload(String fileName,String localPath){        boolean isSuccessed=false;        FTPClient ftpClient=new FTPClient();        try {            int reply=0;            ftpClient.connect(serverUrl,port);            ftpClient.login(userName, password);            reply=ftpClient.getReplyCode();            if(!FTPReply.isPositiveCompletion(reply)){                ftpClient.disconnect();                return isSuccessed;            }            ftpClient.changeWorkingDirectory(storePath);                        FTPFile[] files=ftpClient.listFiles();            for(FTPFile file : files){                if(file.getName().equals(fileName)){                    File localFile=new File(localPath+"/"+file.getName());                    OutputStream outputStream=new FileOutputStream(localFile);                                        ftpClient.retrieveFile(file.getName(), outputStream);                    outputStream.close();                }            }                        ftpClient.logout();            isSuccessed=true;        } catch (Exception e) {            // TODO: handle exception            e.printStackTrace();        }finally{            if(ftpClient.isConnected()){                try {                    ftpClient.disconnect();                } catch (Exception e2) {                    // TODO: handle exception                    e2.printStackTrace();                }            }        }        return isSuccessed;    }}

2.Java的jar测试：(被注释掉的部分是上传测试代码)

package com.wjy.main;import java.io.File;import java.io.FileInputStream;import com.wjy.ftp.transmission.FtpTransmission;public class TestMain {//    public static void main(String args[]){//        FtpTransmission ftpTransmission=new FtpTransmission("10.13.30.22", "wjy", "wjywjy", "./tools/", 21);//        try {//            StringBuilder stringBuilder=new StringBuilder();//            FileInputStream fileInputStream=new FileInputStream(new File("E://testmodel.cld"));//            int cc;//            while((cc=fileInputStream.read())!=-1){//                stringBuilder.append((char)cc);//            }//            System.out.println(stringBuilder);//            boolean flag=ftpTransmission.fileUpLoad("testmodel.cld", stringBuilder.toString());//            System.out.println(flag);//        } catch (Exception e) {//            // TODO: handle exception//            e.printStackTrace();//        }//    }        public static void main(String args[]){    FtpTransmission ftpTransmission=new FtpTransmission("10.13.30.22", "wjy", "wjywjy", "./tools/", 21);    try {        boolean flag=ftpTransmission.fileDownload("ctest.txt","F://NB");        System.out.println(flag);    } catch (Exception e) {        // TODO: handle exception        e.printStackTrace();    }}}

3.C#的dll(由ikvmc转成)测试：(被注释掉的部分是上传测试代码)

using System;using System.IO;using System.Collections.Generic;using System.Text;using com.wjy.ftp.transmission;namespace FTPTransJarTest{    class Program    {        //static void Main(string[] args)        //{                    //FtpTransmission ftpTransmission=new FtpTransmission("10.13.30.22", "wjy", "wjywjy", "./tools/", 21);        //try {        //    StringBuilder stringBuilder=new StringBuilder();        //    StreamReader file = new StreamReader("E://testmodel.cld");        //    int cc;        //    while((cc=file.Read())!=-1){        //        stringBuilder.Append((char)cc);        //    }        //    Boolean flag = ftpTransmission.fileUpLoad("ctest.cld",stringBuilder.ToString());        //    Console.Write(flag);        //} catch (Exception e) {        //    // TODO: handle exception        //    Console.Write(e.Message);        //}            //}        static void Main(string[] args)        {            FtpTransmission ftpTransmission = new FtpTransmission("10.13.30.22", "wjy", "wjywjy", "./tools/", 21);            try            {                Boolean flag = ftpTransmission.fileDownload("ctest.txt", "F://NB");                Console.Write(flag);            }            catch (Exception e)            {                // TODO: handle exception                Console.Write(e.Message);            }        }    }}

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