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vue+springboot文件下载

本文主要是介绍vue+springboot文件下载,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
复制代码
//vue element-ui
<el-button size="medium" type="primary" @click="download">导出</el-button>   //js   downLoad(){      window.location.href="/api/downLoad";   },   复制代码 复制代码
//后台java

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;


@RestController
public class DownLoadFile {

  private static Logger log = LoggerFactory.getLogger(DownLoadFile.class);

  @RequestMapping(value = "/downLoad", method = RequestMethod.GET)
  public static final String downLoad(HttpServletResponse res) throws UnsupportedEncodingException {
    Map<String, Object> reMap = new HashMap<>();
    //文件名 可以通过形参传进来
    String fileName = "t_label.txt";
    //要下载的文件地址 可以通过形参传进来
    String filepath = "f:/svs/" + fileName;

    OutputStream os = null;
    InputStream is = null;
    try {
      // 取得输出流
      os = res.getOutputStream();
      // 清空输出流
      res.reset();
      res.setContentType("application/x-download;charset=GBK");
      res.setHeader("Content-Disposition",
        "attachment;filename=" + new String(fileName.getBytes("utf-8"), "iso-8859-1"));
      // 读取流
      File f = new File(filepath);
      is = new FileInputStream(f);
      if (is == null) {
        reMap.put("msg", "下载附件失败");
      }
      // 复制
      IOUtils.copy(is, res.getOutputStream());
        res.getOutputStream().flush();
      } catch (IOException e) {
        reMap.put("msg", "下载附件失败,error:" + e.getMessage());
      }
      // 文件的关闭放在finally中
      finally {
        try {
          if (is != null) {
            is.close();
          }
        } catch (IOException e) {
          log.error(e.toString());
        }
        try {
          if (os != null) {
            os.close();
          }
        } catch (IOException e) {
          log.error(e.toString());
        }
      }
      String str = JsonUtil.map2Json(reMap);
      return str;
    }

}

 转自:https://www.cnblogs.com/xuchao0506/p/12681480.html

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