将字符串或文件控制浏览器以下载的形式打开文件

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletResponse;

import java.io.*;

/**

 * 将字符串或文件控制浏览器以下载的形式打开文件

 * Created by yjli on 2017/4/25.

 */

@Controller

@RequestMapping("/upload")

public class UploadFileController {

    @RequestMapping("/upload")

    public void test(HttpServletResponse response){

        String filename = "a.xml";

        String msg = "123456";

        response.reset();

        response.setContentType("application/x-download");

        response.setCharacterEncoding("UTF-8");

        try {

            //设置content-disposition响应头控制浏览器以下载的形式打开文件

            response.addHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes("GB2312"), "iso8859-1"));

            // 输出资源内容到相应对象

            response.getOutputStream().write(msg.getBytes("utf-8"));

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

    @RequestMapping("/uploadFile")

    public void test1(HttpServletResponse response){

        String filename = "a.xml";

        String msg = "123456";

        response.reset();

        response.setContentType("application/x-download");

        response.setCharacterEncoding("UTF-8");

        try {

//            InputStream in = new FileInputStream(new File(filename));

            InputStream in = new BufferedInputStream(new ByteArrayInputStream(msg.getBytes("utf-8")));

            if (in == null)

                return;

            //设置content-disposition响应头控制浏览器以下载的形式打开文件

            response.addHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes("GB2312"), "iso8859-1"));

            // 输出资源内容到相应对象

            byte[] b = new byte[1024];

            int len;

            OutputStream out = response.getOutputStream();

            while ((len = in.read(b, 0, 1024)) != -1) {

                out.write(b, 0, len);

            }

            in.close();

            out.close();

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

}