Java 使用JSch库基于某些正则表达式在sftp位置搜索文件_Java_Regex

Java 使用JSch库基于某些正则表达式在sftp位置搜索文件

java regex

Java 使用JSch库基于某些正则表达式在sftp位置搜索文件,java,regex,Java,Regex,我在sftp位置有3种文件，如下所示： String REGEX_PATTERN = "(UploadBusinessLicense|CustomerConsentForm|UploadBusinessLicense)_.*?_.*?\\.jpg"; int SFTPPORT = 22; Session session = null; Channel channel = null; ChannelS

我在sftp位置有3种文件，如下所示：

        String REGEX_PATTERN =
        "(UploadBusinessLicense|CustomerConsentForm|UploadBusinessLicense)_.*?_.*?\\.jpg";

        int SFTPPORT = 22;
        Session session = null;
        Channel channel = null;
        ChannelSftp channelSftp = null;
        List<String> fileNames = new ArrayList<String>();
        Vector<ChannelSftp.LsEntry> list = null;

        JSch jsch = new JSch();
        try {
            session = jsch.getSession("username", "host", 22);
            session.setPassword("password");
            java.util.Properties config = new java.util.Properties();
            config.put("StrictHostKeyChecking", "no");
            session.setConfig(config);
            session.connect();

            channel = session.openChannel("sftp");
            channel.connect();

            channelSftp = (ChannelSftp) channel;
            channelSftp.cd("file directory");

            System.out.println("fetching files");

            list = channelSftp.ls(REGEX_PATTERN);

            for (ChannelSftp.LsEntry entry : list) {
                channelSftp.get(entry.getFilename(), "/home/tofankumarbal/Pictures");

            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (channelSftp != null && channelSftp.isConnected()) {
                    channelSftp.exit();
                    session.disconnect();
                    channel.disconnect();
                }
            } catch (Exception e) {

            }
        }

    }

UploadBusinessLicense\u xyzbus\uzbus.jpg

GovernmentPhotoID\u xyzgovern.jpg

CustomerConsentForm\u xyzconsent\uz.jpg

我需要查询sftp目录，以获取与这些模式中的任何模式匹配的文件。我可以使用什么正则表达式模式

        String REGEX_PATTERN =
        "(UploadBusinessLicense|CustomerConsentForm|UploadBusinessLicense)_.*?_.*?\\.jpg";

        int SFTPPORT = 22;
        Session session = null;
        Channel channel = null;
        ChannelSftp channelSftp = null;
        List<String> fileNames = new ArrayList<String>();
        Vector<ChannelSftp.LsEntry> list = null;

        JSch jsch = new JSch();
        try {
            session = jsch.getSession("username", "host", 22);
            session.setPassword("password");
            java.util.Properties config = new java.util.Properties();
            config.put("StrictHostKeyChecking", "no");
            session.setConfig(config);
            session.connect();

            channel = session.openChannel("sftp");
            channel.connect();

            channelSftp = (ChannelSftp) channel;
            channelSftp.cd("file directory");

            System.out.println("fetching files");

            list = channelSftp.ls(REGEX_PATTERN);

            for (ChannelSftp.LsEntry entry : list) {
                channelSftp.get(entry.getFilename(), "/home/tofankumarbal/Pictures");

            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (channelSftp != null && channelSftp.isConnected()) {
                    channelSftp.exit();
                    session.disconnect();
                    channel.disconnect();
                }
            } catch (Exception e) {

            }
        }

    }

我尝试了以下模式上传业务许可证*|政府照片ID*
而且它不起作用。我是新加入regex的。所以任何帮助都将不胜感激

        String REGEX_PATTERN =
        "(UploadBusinessLicense|CustomerConsentForm|UploadBusinessLicense)_.*?_.*?\\.jpg";

        int SFTPPORT = 22;
        Session session = null;
        Channel channel = null;
        ChannelSftp channelSftp = null;
        List<String> fileNames = new ArrayList<String>();
        Vector<ChannelSftp.LsEntry> list = null;

        JSch jsch = new JSch();
        try {
            session = jsch.getSession("username", "host", 22);
            session.setPassword("password");
            java.util.Properties config = new java.util.Properties();
            config.put("StrictHostKeyChecking", "no");
            session.setConfig(config);
            session.connect();

            channel = session.openChannel("sftp");
            channel.connect();

            channelSftp = (ChannelSftp) channel;
            channelSftp.cd("file directory");

            System.out.println("fetching files");

            list = channelSftp.ls(REGEX_PATTERN);

            for (ChannelSftp.LsEntry entry : list) {
                channelSftp.get(entry.getFilename(), "/home/tofankumarbal/Pictures");

            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (channelSftp != null && channelSftp.isConnected()) {
                    channelSftp.exit();
                    session.disconnect();
                    channel.disconnect();
                }
            } catch (Exception e) {

            }
        }

    }

字符串正则表达式\u模式=
“（UploadBusinessLicense | CustomerConsentForm | UploadBusinessLicense）\.\\.jpg”；
int-SFTPPORT=22；
会话=空；
通道=空；
ChannelSftp ChannelSftp=null；
列表文件名=新的ArrayList（）；
向量列表=空；
JSch JSch=新的JSch（）；
试一试{
session=jsch.getSession（“用户名”，“主机”，22）；
session.setPassword（“密码”）；
java.util.Properties config=new java.util.Properties（）；
配置放置（“检查”、“否”）；
session.setConfig（config）；
session.connect（）；
通道=会话.openChannel（“sftp”）；
channel.connect（）；
channelSftp=（channelSftp）信道；
channelSftp.cd（“文件目录”）；
System.out.println（“获取文件”）；
列表=channelSftp.ls（正则表达式模式）；
对于（ChannelSftp.LsEntry条目：列表）{
channelSftp.get（entry.getFilename（），“/home/tofankumarbal/Pictures”）；
}
}捕获（例外e）{
e、 printStackTrace（）；
}最后{
试一试{
if（channelSftp！=null&&channelSftp.isConnected（））{
channelSftp.exit（）；
session.disconnect（）；
通道断开（）；
}
}捕获（例外e）{
}
}
}

使用上述正则表达式搜索后，向量列表变为空。

从问题中，我了解到您希望将3种字符串与以下条件匹配

        String REGEX_PATTERN =
        "(UploadBusinessLicense|CustomerConsentForm|UploadBusinessLicense)_.*?_.*?\\.jpg";

        int SFTPPORT = 22;
        Session session = null;
        Channel channel = null;
        ChannelSftp channelSftp = null;
        List<String> fileNames = new ArrayList<String>();
        Vector<ChannelSftp.LsEntry> list = null;

        JSch jsch = new JSch();
        try {
            session = jsch.getSession("username", "host", 22);
            session.setPassword("password");
            java.util.Properties config = new java.util.Properties();
            config.put("StrictHostKeyChecking", "no");
            session.setConfig(config);
            session.connect();

            channel = session.openChannel("sftp");
            channel.connect();

            channelSftp = (ChannelSftp) channel;
            channelSftp.cd("file directory");

            System.out.println("fetching files");

            list = channelSftp.ls(REGEX_PATTERN);

            for (ChannelSftp.LsEntry entry : list) {
                channelSftp.get(entry.getFilename(), "/home/tofankumarbal/Pictures");

            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (channelSftp != null && channelSftp.isConnected()) {
                    channelSftp.exit();
                    session.disconnect();
                    channel.disconnect();
                }
            } catch (Exception e) {

            }
        }

    }

以UploadBusinessLicense、GovernmentPhotoID和CustomerConcentForm开头的字符串

根据它所启动的字符串的类型，下一个集合应该是总线、管理和同意

然后是一组随机数

以jpg扩展结束

        String REGEX_PATTERN =
        "(UploadBusinessLicense|CustomerConsentForm|UploadBusinessLicense)_.*?_.*?\\.jpg";

        int SFTPPORT = 22;
        Session session = null;
        Channel channel = null;
        ChannelSftp channelSftp = null;
        List<String> fileNames = new ArrayList<String>();
        Vector<ChannelSftp.LsEntry> list = null;

        JSch jsch = new JSch();
        try {
            session = jsch.getSession("username", "host", 22);
            session.setPassword("password");
            java.util.Properties config = new java.util.Properties();
            config.put("StrictHostKeyChecking", "no");
            session.setConfig(config);
            session.connect();

            channel = session.openChannel("sftp");
            channel.connect();

            channelSftp = (ChannelSftp) channel;
            channelSftp.cd("file directory");

            System.out.println("fetching files");

            list = channelSftp.ls(REGEX_PATTERN);

            for (ChannelSftp.LsEntry entry : list) {
                channelSftp.get(entry.getFilename(), "/home/tofankumarbal/Pictures");

            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (channelSftp != null && channelSftp.isConnected()) {
                    channelSftp.exit();
                    session.disconnect();
                    channel.disconnect();
                }
            } catch (Exception e) {

            }
        }

    }

String regex=“（UploadBusinessLicense[a-zA-z]+bus\GovernmentPhotoID[a-zA-z]+government\customerconcentform[a-zA-z]+同意）\ud+\.jpg”

        String REGEX_PATTERN =
        "(UploadBusinessLicense|CustomerConsentForm|UploadBusinessLicense)_.*?_.*?\\.jpg";

        int SFTPPORT = 22;
        Session session = null;
        Channel channel = null;
        ChannelSftp channelSftp = null;
        List<String> fileNames = new ArrayList<String>();
        Vector<ChannelSftp.LsEntry> list = null;

        JSch jsch = new JSch();
        try {
            session = jsch.getSession("username", "host", 22);
            session.setPassword("password");
            java.util.Properties config = new java.util.Properties();
            config.put("StrictHostKeyChecking", "no");
            session.setConfig(config);
            session.connect();

            channel = session.openChannel("sftp");
            channel.connect();

            channelSftp = (ChannelSftp) channel;
            channelSftp.cd("file directory");

            System.out.println("fetching files");

            list = channelSftp.ls(REGEX_PATTERN);

            for (ChannelSftp.LsEntry entry : list) {
                channelSftp.get(entry.getFilename(), "/home/tofankumarbal/Pictures");

            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (channelSftp != null && channelSftp.isConnected()) {
                    channelSftp.exit();
                    session.disconnect();
                    channel.disconnect();
                }
            } catch (Exception e) {

            }
        }

    }

注意：在Java中使用正则表达式时，请使用extra\

        String REGEX_PATTERN =
        "(UploadBusinessLicense|CustomerConsentForm|UploadBusinessLicense)_.*?_.*?\\.jpg";

        int SFTPPORT = 22;
        Session session = null;
        Channel channel = null;
        ChannelSftp channelSftp = null;
        List<String> fileNames = new ArrayList<String>();
        Vector<ChannelSftp.LsEntry> list = null;

        JSch jsch = new JSch();
        try {
            session = jsch.getSession("username", "host", 22);
            session.setPassword("password");
            java.util.Properties config = new java.util.Properties();
            config.put("StrictHostKeyChecking", "no");
            session.setConfig(config);
            session.connect();

            channel = session.openChannel("sftp");
            channel.connect();

            channelSftp = (ChannelSftp) channel;
            channelSftp.cd("file directory");

            System.out.println("fetching files");

            list = channelSftp.ls(REGEX_PATTERN);

            for (ChannelSftp.LsEntry entry : list) {
                channelSftp.get(entry.getFilename(), "/home/tofankumarbal/Pictures");

            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (channelSftp != null && channelSftp.isConnected()) {
                    channelSftp.exit();
                    session.disconnect();
                    channel.disconnect();
                }
            } catch (Exception e) {

            }
        }

    }

我使用的字符串示例如下：

        String REGEX_PATTERN =
        "(UploadBusinessLicense|CustomerConsentForm|UploadBusinessLicense)_.*?_.*?\\.jpg";

        int SFTPPORT = 22;
        Session session = null;
        Channel channel = null;
        ChannelSftp channelSftp = null;
        List<String> fileNames = new ArrayList<String>();
        Vector<ChannelSftp.LsEntry> list = null;

        JSch jsch = new JSch();
        try {
            session = jsch.getSession("username", "host", 22);
            session.setPassword("password");
            java.util.Properties config = new java.util.Properties();
            config.put("StrictHostKeyChecking", "no");
            session.setConfig(config);
            session.connect();

            channel = session.openChannel("sftp");
            channel.connect();

            channelSftp = (ChannelSftp) channel;
            channelSftp.cd("file directory");

            System.out.println("fetching files");

            list = channelSftp.ls(REGEX_PATTERN);

            for (ChannelSftp.LsEntry entry : list) {
                channelSftp.get(entry.getFilename(), "/home/tofankumarbal/Pictures");

            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (channelSftp != null && channelSftp.isConnected()) {
                    channelSftp.exit();
                    session.disconnect();
                    channel.disconnect();
                }
            } catch (Exception e) {

            }
        }

    }

上传BusinessLicense_xyzbus_123452454.jpg
政府照片ID_xyzgovern_12345.jpg
CustomerConsentForm_xyzconsent_5456456.jpg

我希望这能解决您的问题。

提供示例输入/输出以及您尝试过的内容。谢谢您的建议。但我怀疑这也不起作用。但是当我用UploadBusinessLicense搜索时，它会给我所有UploadBusinessLicense文件。关于文件搜索模式，jsch库中是否有某种限制

        String REGEX_PATTERN =
        "(UploadBusinessLicense|CustomerConsentForm|UploadBusinessLicense)_.*?_.*?\\.jpg";

        int SFTPPORT = 22;
        Session session = null;
        Channel channel = null;
        ChannelSftp channelSftp = null;
        List<String> fileNames = new ArrayList<String>();
        Vector<ChannelSftp.LsEntry> list = null;

        JSch jsch = new JSch();
        try {
            session = jsch.getSession("username", "host", 22);
            session.setPassword("password");
            java.util.Properties config = new java.util.Properties();
            config.put("StrictHostKeyChecking", "no");
            session.setConfig(config);
            session.connect();

            channel = session.openChannel("sftp");
            channel.connect();

            channelSftp = (ChannelSftp) channel;
            channelSftp.cd("file directory");

            System.out.println("fetching files");

            list = channelSftp.ls(REGEX_PATTERN);

            for (ChannelSftp.LsEntry entry : list) {
                channelSftp.get(entry.getFilename(), "/home/tofankumarbal/Pictures");

            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (channelSftp != null && channelSftp.isConnected()) {
                    channelSftp.exit();
                    session.disconnect();
                    channel.disconnect();
                }
            } catch (Exception e) {

            }
        }

    }