如何从spring rest控制器发送流中的文本块？

import org.springframework.core.io.InputStreamResource;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.mvc.method.annotation.StreamingResponseBody;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.OutputStream;

@RestController
public class MyController {

    @GetMapping("/stream")
    public ResponseEntity<StreamingResponseBody> streamText() {
        StreamingResponseBody responseBody = new StreamingResponseBody() {
            @Override
            public void writeTo(OutputStream outputStream) throws IOException {
                // 从流中逐块写入文本数据
                String text = "Hello, World!";
                byte[] bytes = text.getBytes();
                ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes);
                int n;
                byte[] buffer = new byte[1024];
                while ((n = inputStream.read(buffer)) != -1) {
                    outputStream.write(buffer, 0, n);
                    outputStream.flush();
                }
                inputStream.close();
            }
        };

        return ResponseEntity.ok()
                .contentType(MediaType.TEXT_PLAIN)
                .body(responseBody);
    }
}