[Fix-6840] Config variable substitution inconsistent

Author: xuqi1633

seatunnel-core/seatunnel-starter/src/main/bin/seatunnel.sh

@@ -47,7 +47,7 @@ if [ $# == 0 ]
 then
     args="-h"
 else
-    args=$@
+    args=("$@")
 fi
 
 set +u
@@ -107,4 +107,4 @@ while IFS= read -r line || [[ -n "$line" ]]; do
     fi
 done < ${APP_DIR}/config/jvm_client_options
 
-java ${JAVA_OPTS} -cp ${CLASS_PATH} ${APP_MAIN} ${args}
+java ${JAVA_OPTS} -cp ${CLASS_PATH} ${APP_MAIN} "${args[@]}"

seatunnel-e2e/seatunnel-engine-e2e/connector-seatunnel-e2e-base/src/test/java/org/apache/seatunnel/engine/e2e/UserVariableIT.java

@@ -44,4 +44,15 @@ public void userVariableTest(TestContainer container) throws IOException, Interr
                 container.executeJob("/fake_to_console.variables.conf", variables);
         Assertions.assertEquals(0, execResult.getExitCode());
     }
+
+    @TestTemplate
+    public void userVariableWithSpaceTest(TestContainer container)
+            throws IOException, InterruptedException {
+        List<String> variables = new ArrayList<>();
+        String list = "\"AA  AA\"";
+        variables.add("blankSpace=" + list);
+        Container.ExecResult execResult =
+                container.executeJob("/fake_variable_with_space_assert.conf", variables);
+        Assertions.assertEquals(0, execResult.getExitCode());
+    }
 }

seatunnel-e2e/seatunnel-engine-e2e/connector-seatunnel-e2e-base/src/test/resources/fake_variable_with_space_assert.conf

@@ -0,0 +1,72 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+######
+###### This config file is a demonstration of streaming processing in seatunnel config
+######
+
+env {
+  job.mode = "BATCH"
+  parallelism = 1
+}
+
+source {
+  # This is a example source plugin **only for test and demonstrate the feature source plugin**
+  FakeSource {
+    row.num = 1
+    schema {
+      fields {
+        c_string = string
+      }
+    }
+    rows = [
+      {
+        kind = INSERT
+        fields = [${blankSpace}]
+      }
+    ]
+  }
+}
+
+sink {
+  Assert {
+    rules =
+    {
+      row_rules = [
+        {
+          rule_type = MAX_ROW
+              rule_value = 1
+        },
+        {
+          rule_type = MIN_ROW
+              rule_value = 1
+        }
+      ],
+      field_rules = [
+        {
+          field_name = c_string
+          field_type = string
+          field_value = [
+            {
+              rule_type = NOT_NULL
+              equals_to = "AA  AA"
+            }
+          ]
+        }
+      ]
+    }
+  }
+}