SpringBoot项目中的全局异常处理器 Failed to invoke @ExceptionHandler method

文件下载代码

@RequestMapping(value = { "/data/docking/picture/{id}/{empi}" })
    public JsonApi picToJSP(@PathVariable String id, @PathVariable("empi") String empi,
            @Validated({ BaseEntity.SelectOne.class }) TFileWork0 tFileWork0, HttpServletRequest request,
            HttpServletResponse response) {

        FileInputStream in;
        String name = null;

        Yhxd yhxd = new Yhxd();
        yhxd.setEmpi(empi);
        List<Map<String, Object>> yhxdList = yhxdService.getList(yhxd);
        if (yhxdList != null && yhxdList.size() > 0) {
            name = yhxdList.get(0).get("YHMC").toString() + "-心电图-";
        }

        tFileWork0.setId(id);
        Map<String, Object> map = tFileWork0Service.getOne(tFileWork0);
        if (map == null) {
            return new JsonApi(ApiCodeEnum.NOT_FOUND);
        } else {
            String url = map.get("file_path").toString() + map.get("file_name");
            String na = map.get("file_name").toString();
            /*设置文件下載名称*/
            String filename = name + na;
            try {
                // 图片读取路径
                String imgUrl = "C:/Users/chenyan/" + url;
                in = new FileInputStream(imgUrl);
                int i = in.available();
                byte[] data = new byte[i];
                in.read(data);
                in.close();

                response.setContentType("application/octet-stream;charset=UTF-8");
                response.setHeader("Content-Disposition", "attachment; filename=" + java.net.URLEncoder.encode(filename, "UTF-8"));
                OutputStream outputStream = new BufferedOutputStream(response.getOutputStream());
                outputStream.write(data);
                outputStream.flush();
                outputStream.close();
            } catch (Exception e) {
                e.printStackTrace();
            }

            return new JsonApi(ApiCodeEnum.OK);
        }

    }
    

全局异常处理器

package com.data.docking.exception;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

import com.data.docking.tools.ApiCodeEnum;
import com.data.docking.tools.JsonApi;

/**
 * Copyright © 2019 .
 *
 * @author: ChenYan
 * @date: 2019年10月10日
 * @description: 全局异常处理器
 */
@ControllerAdvice
@ResponseBody
public class GlobalExceptionHandler {
    Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class);

    @ExceptionHandler(Exception.class)
    public JsonApi defaultErrorHandler(Exception e) {
        e.printStackTrace();
        log.error("error msg：{}", e.getMessage());
        return new JsonApi(ApiCodeEnum.ERROR).setMsg(e.getMessage());
    }
}

在下载文件的时候报错

只需要把

 @ExceptionHandler(Exception.class) 改成 @ExceptionHandler(BindException.class)就可以了。