关于使用jsch 上传文件到sftp的问题 java.lang.StringIndexOutOfBoundsException

Question

直接贴代码了
public class SftpUtil {

private static Session session = null;
private static Channel channel = null;

private static final Logger log = Logger.getLogger(SftpUtil.class.getName());

/**
 * 获取ChannelSftp实例对象
 * 
 * @param sftpDetails
 * @param timeout
 * @return ChannelSftp
 * @throws JSchException 
 */
private static ChannelSftp getChannel(int timeout) throws JSchException {
    ResourceBundle bundle = ResourceBundle.getBundle("ZJW");
    String ftpHost = bundle.getString(SftpConstants.SFTP_REQ_HOST);
    String port = bundle.getString(SftpConstants.SFTP_REQ_PORT);
    String ftpUsername = bundle.getString(SftpConstants.SFTP_REQ_USERNAME);
    String ftpPassword = bundle.getString(SftpConstants.SFTP_REQ_PASSWORD);
   
    int ftpPort = SftpConstants.SFTP_DEFAULT_PORT;
    if (port != null && !port.equals("")) {
        ftpPort = Integer.valueOf(port);
    }

    JSch jsch = new JSch(); // 创建JSch对象
    session = jsch.getSession(ftpUsername, ftpHost, ftpPort); // 根据用户名，主机ip，端口获取一个Session对象
    System.out.println(ftpUsername+"###"+ftpHost+"###"+ftpPort+"###"+ftpPassword);
    log.info("Session created.");
    if (ftpPassword != null) {
        session.setPassword(ftpPassword); // 设置密码
    }
    Properties config = new Properties();
    config.put("StrictHostKeyChecking", "no");
    //config.put("PreferredAuthentications", "password");
    session.setConfig(config); // 为Session对象设置properties
    session.setTimeout(timeout); // 设置timeout时间
    log.info("Session建立连接。。。");
    session.connect(); // 通过Session建立链接
    log.info("Session connected.");

    log.info("Opening Channel.");
    channel = session.openChannel("sftp"); // 打开SFTP通道
    channel.connect(); // 建立SFTP通道的连接
    log.info("Connected successfully to ftpHost = " + ftpHost + ",as ftpUsername = " + ftpUsername
            + ", returning: " + channel);
    return (ChannelSftp) channel;      
}
/**
 * zip文件上传
 * @param dst
 * @param src
 * @param timeout
 * @description dst为目标文件名(e.g:xxx/sftp/xxx.zip")
 *                 src为本地文件名(e.g:c:\\xxx\\xxx.zip)
 *                 timeout为连接超时时间,单位ms
 */
public static void uploadZip(String dst,String src,int timeout){
    try {
        ChannelSftp channel = getChannel(timeout);  //获取执行对象
        if(channel==null){
            log.info("程序错误，ChannelSftp获取为null！");
        }
        log.info("zip上传开始...");
        channel.put(src, dst, ChannelSftp.OVERWRITE);  //执行sftp上传,模式为overwrite
        log.info("zip上传成功...");
    } catch (Exception e) {
        log.info("系统异常，文件上传失败！");
        e.printStackTrace();
    }finally {
        try {
            closeChannel();
        } catch (Exception e) {
            log.info("系统异常，资源关闭失败!");
            e.printStackTrace();
        }
    }
}

}

在本机装了一个msftpsrvr64模拟sftp，使用FlashFXP连接上传都很正常
用自己写的测试就不行了

@Test
public void demo03(){
    String dst = "\0000.zip";
    String src = "D:\\0000.zip";
    SftpUtil.uploadZip(dst, src, 6000);
}

错误码：

java.lang.StringIndexOutOfBoundsException: String index out of range: 16777219
at java.lang.String.checkBounds(Unknown Source)
at java.lang.String.<init>(Unknown Source)
at com.jcraft.jsch.Util.byte2str(Util.java:417)
at com.jcraft.jsch.Util.byte2str(Util.java:428)
at com.jcraft.jsch.DHG14.next(DHG14.java:203)
at com.jcraft.jsch.Session.connect(Session.java:326)
at com.jcraft.jsch.Session.connect(Session.java:183)
at com.waterelephant.zjw.utils.SftpUtil.getChannel(SftpUtil.java:67)
at com.waterelephant.zjw.utils.SftpUtil.uploadZip(SftpUtil.java:102)
at com.waterelephant.test.PropTest.demo03(PropTest.java:23)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

调试过 是在session.connect()那里出的异常 debug进去看了一下 是连上了的 但是中间出了异常 没看太懂...

Answer 1

是msftpsrvr64这个软件的问题 换了一个freeSSHD模拟sftp服务器就好了连接成功之后上传文件的时候又报了如下异常：3: Permission denied问题原因：服务器的根目录默认C盘解决：修改服务器目录到D：XXX 即可解决问题