java通过连接ssh来实现postgres数据库的数据备份

引入依赖

<dependency>
            <groupId>com.jcraft</groupId>
            <artifactId>jsch</artifactId>
            <version>0.1.54</version>
            <scope>compile</scope>
        </dependency>

import com.jcraft.jsch.ChannelExec;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;

public class RemotePostgreSQLBackup {
    public static void main(String[] args) {
        String sshHost = "192.168.11.12";
        String sshUsername = "root";
        String sshPassword = "123456";
        String pgDumpCommand = "pg_dump -U postgres -d db_test -t allproject4490 -f /home/backup_file11.bak";

        try {
            // 创建SSH会话
            JSch jsch = new JSch();
            Session session = jsch.getSession(sshUsername, sshHost);
            session.setPassword(sshPassword);
            session.setConfig("StrictHostKeyChecking", "no");
            session.connect();

            // 打开SSH通道并执行pg_dump命令
            ChannelExec channelExec = (ChannelExec) session.openChannel("exec");
            channelExec.setCommand(pgDumpCommand);
            channelExec.connect();

            // 等待命令执行完成
            while (!channelExec.isClosed()) {
                Thread.sleep(1000);
            }

            // 关闭通道和会话
            channelExec.disconnect();
            session.disconnect();

            System.out.println("远程数据库备份成功");

        } catch (Exception e) {
            e.printStackTrace();
            System.err.println("远程数据库备份失败");
        }
    }
}

备份数据命令（allproject4490 是要备份的表名）
pg_dump -U postgres -d geodb -t allproject4490 -f /home/backup_file.bak
数据恢复命令
psql -U postgres -d geodb -f /home/backup_file.bak