# 具体遇到的问题
文件存储接入的是腾讯云的

本地环境：测试4M图片上传没问题，已确认使用的是远程存储，非本地

生产环境：1M以内没有问题，1M以上就出现跨域问题
# 报错信息的截图

# 相关课程内容截图

# 尝试过的解决思路和结果
本地环境+腾讯云  测试4M文件上传，正常 

生产环境+腾讯云  测试4M文件上传，错误
# 粘贴全部相关代码，切记添加代码注释（请勿截图）

在这里输入代码，可通过选择【代码语言】突出显示

#文件上传配置

lin:
file:
# 文件服务域名
    domain: https://*******存储桶地址********/
# 排除文件类型
    exclude:
# 包括文件类型
    include:
      - .jpg
      - .png
      - .jpeg
      - .JPG
      - .PNG
      - .JPEG
# 文件最大数量
    nums: 10
# 服务器文件路径
    serve-path: assets/**
# 单个文件最大体积
    single-limit: 10MB
# 本地文件保存位置
    store-dir: assets/
spring:
servlet:
multipart:
#设置单个文件上传大小
      max-file-size: 10MB
#设置总上传的数据大小
      max-request-size: 50MB

package io.github.talelin.latticy.extension.file;

import io.github.talelin.latticy.module.file.Uploader;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;

/**
 * 文件上传配置类
 *
 * @author Juzi@TaleLin
 */
@Configuration
public class UploaderConfiguration {
/**
     * @return 本地文件上传实现类
     */
    @Bean
    @Order
    @ConditionalOnMissingBean
    public Uploader uploader(){
return new TencentUpLoader();
    }
}

package io.github.talelin.latticy.extension.file;

import com.qcloud.cos.COSClient;
import com.qcloud.cos.ClientConfig;
import com.qcloud.cos.auth.BasicCOSCredentials;
import com.qcloud.cos.auth.COSCredentials;
import com.qcloud.cos.exception.CosClientException;
import com.qcloud.cos.model.ObjectMetadata;
import com.qcloud.cos.model.PutObjectRequest;
import com.qcloud.cos.region.Region;
import io.github.talelin.latticy.module.file.AbstractUploader;
import io.github.talelin.latticy.module.file.FileConstant;
import io.github.talelin.latticy.module.file.FileProperties;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;

import java.io.ByteArrayInputStream;

/**
 * @author Created by 付俊杰
 * email:1025461682@qq.com
 * phone:17684220995
 * 2020年09月19日12:08:59
 */
@Slf4j
public class TencentUpLoader extends AbstractUploader {
@Autowired
    private FileProperties fileProperties;
private COSClient cosClient;
private String secretId = "****************";
private String secretKey = "****************";
private String bucket = "***********";
private ClientConfig clientConfig;
private COSCredentials cred;

@Override
    protected FileProperties getFileProperties() {
        init();
return fileProperties;
    }

private void init() {
cred = new BasicCOSCredentials(secretId, secretKey);
        Region region = new Region("ap-nanjing");
clientConfig = new ClientConfig(region);
    }

/**
     * 主要的业务
     */
    @Override
    protected boolean handleOneFile(byte[] bytes, String newFilename) {
cosClient = new COSClient(cred, clientConfig);
        ByteArrayInputStream byteInputStream = new ByteArrayInputStream(bytes);
        ObjectMetadata metadata = new ObjectMetadata();
        metadata.setContentType("image/jpeg");
        PutObjectRequest putObjectRequest = new PutObjectRequest(bucket, newFilename, byteInputStream, metadata);
try {
cosClient.putObject(putObjectRequest);
return true;
        } catch (CosClientException ex) {
log.error("tencent upload file error: {}", ex.getMessage());
return false;
        } finally {
cosClient.shutdown();
        }
    }

/**
     *
     */
    @Override
    protected String getStorePath(String newFilename) {
return fileProperties.getDomain() + newFilename;
    }

@Override
    protected String getFileType() {
return FileConstant.REMOTE;
    }
}