增加笔记乱码

src/main/java/com/bupt/note/Controller/NoteController.java

@@ -23,6 +23,7 @@ import java.io.File;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.io.Writer;
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Optional;
@@ -78,7 +79,7 @@ public class NoteController {
                         paperNote.setUserName(username);
                         paperNoteRepository.save(paperNote);
                     }
-                    wr = new FileWriter(f);
+                    wr = new FileWriter(f, StandardCharsets.UTF_8);
                     wr.write(noteForm.getContent());
                     return ResponseDataUtil.buildSuccess(note);
                 } catch (IOException e) {