修复mx转mt的输出路径为空的缺陷

swiftCore/src/main/java/com/brilliance/swift/mx2mt/AbstractMx2MtCreator.java

@@ -543,11 +543,15 @@ public abstract class AbstractMx2MtCreator implements Mx2MtCreator {
         str.setMtType(getMtType());
         str.setMessage(mtStr);
         String outputFilePath = (String)context.get(Mx2MtContextIdentifier.MX_TO_MT_OUTPUT_FILE_PATH, true);
-        File destFile=new File(outputFilePath);
-        if(destFile!=null&&(!destFile.getParentFile().exists())){
-            destFile.getParentFile().mkdirs();
+        if(StringUtil.isNotEmpty(outputFilePath))
+        {
+            File destFile=new File(outputFilePath);
+            if(destFile!=null&&(!destFile.getParentFile().exists())){
+                destFile.getParentFile().mkdirs();
+            }
         }
 
+
         if (StringUtil.isNotEmpty(outputFilePath)) {
             write(swiftMessage, new File(outputFilePath));
         }