如何使用THYMELEAF创建包含内容的文件并进行下载

// 导入相关的类和包
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

@Controller
@RequestMapping("/download")
public class DownloadController {

    @Autowired
    private TemplateEngine templateEngine;

    @GetMapping
    public void downloadFile(HttpServletResponse response) throws IOException {
        // 创建模板上下文
        Context context = new Context();
        context.setVariable("content", "这是要包含的内容");

        // 渲染模板
        String renderedHtml = templateEngine.process("download", context);

        // 设置响应头
        response.setContentType("application/octet-stream");
        response.setHeader("Content-Disposition", "attachment; filename=\"download.html\"");

        // 将生成的文件写入响应流
        PrintWriter writer = response.getWriter();
        writer.write(renderedHtml);
        writer.flush();
        writer.close();
    }
}