Update export script prompt information (apache#14276)

* update export script prompt information

* update export script prompt information

* format

---------

Co-authored-by: 2b3c511 <[email protected]>

Author: 2b3c511

iotdb-client/cli/src/main/java/org/apache/iotdb/tool/data/ExportData.java

@@ -242,6 +242,11 @@ public static void main(String[] args) {
             true);
         System.exit(CODE_ERROR);
       }
+    } else {
+      ioTPrinter.println(
+          String.format(
+              "Invalid args: Required values for option '%s' not provided", FILE_TYPE_NAME));
+      System.exit(CODE_ERROR);
     }
     int exitCode = CODE_OK;
     try {
@@ -531,6 +536,12 @@ private static void parseSpecialParams(CommandLine commandLine) throws ArgsError
     if (!targetDirectory.endsWith("/") && !targetDirectory.endsWith("\\")) {
       targetDirectory += File.separator;
     }
+    final File file = new File(targetDirectory);
+    if (!file.isDirectory()) {
+      ioTPrinter.println(
+          String.format("Source file or directory %s does not exist", targetDirectory));
+      System.exit(CODE_ERROR);
+    }
     if (commandLine.getOptionValue(LINES_PER_FILE_ARGS) != null) {
       linesPerFile = Integer.parseInt(commandLine.getOptionValue(LINES_PER_FILE_ARGS));
     }

iotdb-client/cli/src/main/java/org/apache/iotdb/tool/data/ImportData.java

@@ -366,6 +366,12 @@ private static void parseSpecialParams(CommandLine commandLine) throws ArgsError
     }
     if (commandLine.getOptionValue(THREAD_NUM_ARGS) != null) {
       threadNum = Integer.parseInt(commandLine.getOptionValue(THREAD_NUM_ARGS));
+      if (threadNum <= 0) {
+        ioTPrinter.println(
+            String.format(
+                "error: Invalid thread number '%s'. Please set a positive integer.", threadNum));
+        System.exit(CODE_ERROR);
+      }
     }
     if (commandLine.getOptionValue(TIMESTAMP_PRECISION_ARGS) != null) {
       timestampPrecision = commandLine.getOptionValue(TIMESTAMP_PRECISION_ARGS);
@@ -512,16 +518,16 @@ public static void main(String[] args) throws IoTDBConnectionException {
           System.exit(CODE_ERROR);
         }
       } else {
-        printHelpOptions(
-            TSFILEDB_CLI_HEAD,
-            TSFILEDB_CLI_PREFIX,
-            hf,
-            tsFileOptions,
-            csvOptions,
-            sqlOptions,
-            true);
+        ioTPrinter.println(
+            String.format(
+                "Invalid args: Required values for option '%s' not provided", FILE_TYPE_NAME));
         System.exit(CODE_ERROR);
       }
+    } else {
+      ioTPrinter.println(
+          String.format(
+              "Invalid args: Required values for option '%s' not provided", FILE_TYPE_NAME));
+      System.exit(CODE_ERROR);
     }
 
     try {

iotdb-client/cli/src/main/java/org/apache/iotdb/tool/tsfile/ExportTsFile.java

@@ -252,6 +252,12 @@ private static void parseSpecialParamsBack(CommandLine commandLine) throws ArgsE
     if (!targetDirectory.endsWith("/") && !targetDirectory.endsWith("\\")) {
       targetDirectory += File.separator;
     }
+    final File file = new File(targetDirectory);
+    if (!file.isDirectory()) {
+      ioTPrinter.println(
+          String.format("Source file or directory %s does not exist", targetDirectory));
+      System.exit(CODE_ERROR);
+    }
   }
 
   /**