19.对图片进行base64编码，存入数据库

package com.atguigu.yygh.common.util;

import org.apache.commons.codec.binary.Base64;

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;

public class ImageBase64Util {

    public static void main(String[] args) {
        String imageFile= "G:\\0722test\\111.png";// 待处理的图片
        System.out.println(getImageString(imageFile));
    }

    public static String getImageString(String imageFile){
        InputStream is = null;
        try {
            byte[] data = null;
            is = new FileInputStream(new File(imageFile));
            data = new byte[is.available()];
            is.read(data);
            return new String(Base64.encodeBase64(data));
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (null != is) {
                try {
                    is.close();
                    is = null;
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
        return "";
    }
}

 @ApiOperation(value = "上传医院")
    @PostMapping("saveHospital")
    public Result saveHospital(HttpServletRequest request) throws IOException {
        JSONObject json= HttpRequestPost.getRequestJsonObject(request);
        Map<String, Object> params = JSONObject.parseObject(json.toJSONString(), new TypeReference<Map<String, Object>>(){});
//必须参数校验 略
        String hoscode = (String)params.get("hoscode");
        if(StringUtils.isEmpty(hoscode)) {
            throw new YyghException(ResultCodeEnum.PARAM_ERROR);
        }
//传输过程中“+”转换为了“ ”，因此我们要转换回来
        String logoDataString = (String)params.get("logoData");
        if(!StringUtils.isEmpty(logoDataString)) {
            String logoData = logoDataString.replaceAll("", "+");
            params.put("logoData", logoData);
        }



//签名校验
        if(!HttpRequestHelper.isSignEquals(params, hospitalSetService.getSignKey(hoscode))) {
            throw new YyghException(ResultCodeEnum.SIGN_ERROR);
        }
      //  Map<String, Object> paramMap = HttpRequestHelper.switchMap(request.getParameterMap());

        hospitalService.save(params);
        return Result.ok();
    }