最近工作中有个excel导出的功能，要求导出的模板和客户提供的模板一致，而客户提供的模板有着复杂的表头和独特列表风格，像以往使用poi去画是非常耗时间的，比如需要考虑字体大小，单元格合并，单元格的格式等问题；
所有给大家推荐使用easyExcel填充，我们只需要把客户的模板进行简单处理，上传到文件服务器，需要导出的的时候，就从文件服务器拿模板进行填充返回前端，这样非常便捷和效率高。
easyExcel官方文档：填充Excel | Easy Excel
一、流程展示
我准备了一个简单的模板进行测试
1.1 模板准备
1.2 模板文件上传到minio
1.3 填充后的文件
二、关键代码
1.1 引入依赖minio、easyExcel
<dependency>
<groupId>io.minio</groupId>
<artifactId>minio</artifactId>
<version>7.1.0</version>
</dependency> <dependency>
<groupId>com.alibaba</groupId>
<artifactId>easyexcel</artifactId>
<version>3.1.0</version>
</dependency>1.2 minio配置及工具类准备
1.2.1 minio yml文件配置
minio:
endpoint: http://xxx.xxx.xxx.xxx:xxx
accesskey: xxx
secretKey: xxx
bucketName: xxx
expires: 31.2.2 minio 配置类
package com.ruoyi.common.config;
import com.ruoyi.common.utils.DateUtils;
import com.ruoyi.common.utils.MinioUtils;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;
/**
* @author qujingye
*/
@Data
@Configuration
@Component
@ConfigurationProperties(prefix = "minio")
public class MinioConfig {
/**
* 地址
*/
private String endpoint;
/**
* 桶的名字
*/
private static String bucketName;
/**
* 访问key
*/
private String accessKey;
/**
* 秘钥key
*/
private String secretKey;
/**
* 临时文件的过期时间(天)
*/
private static Integer expires;
@Bean
public MinioUtils creatMinioClient() {
return new MinioUtils(endpoint, bucketName, accessKey, secretKey);
}
/**
* 临时文件的过期时间
*
* @param expires Xml内容
*/
public void setExpires(Integer expires) {
MinioConfig.expires = DateUtils.getDaySecond(expires);
}
public static Integer getExpires() {
return expires;
}
public static String getBucketName() {
return bucketName;
}
public void setBucketName(String bucketName) {
MinioConfig.bucketName = bucketName;
}
}
1.2.3 minio 工具类
package com.ruoyi.common.utils;
import com.alibaba.fastjson2.JSONObject;
import com.ruoyi.common.exception.file.FileNameLengthLimitExceededException;
import com.ruoyi.common.exception.file.FileSizeLimitExceededException;
import com.ruoyi.common.exception.file.InvalidExtensionException;
import com.ruoyi.common.utils.file.MimeTypeUtils;
import com.ruoyi.common.utils.uuid.Seq;
import io.minio.*;
import io.minio.errors.*;
import io.minio.messages.Bucket;
import io.minio.messages.DeleteObject;
import io.minio.messages.Item;
import org.apache.commons.io.FilenameUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.multipart.MultipartFile;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.time.ZonedDateTime;
import java.util.*;
/**
* Minio工具类
*
* @author qujingye
*/
public class MinioUtils {
private static final Logger log = LoggerFactory.getLogger(MinioUtils.class);
private static MinioClient minioClient;
private static String endpoint;
private static String bucketName;
private static String accessKey;
private static String secretKey;
private static final String SEPARATOR = "/";
/**
* 默认大小 200M
*/
public static final long DEFAULT_MAX_SIZE = 200 * 1024 * 1024;
/**
* 默认的文件名最大长度 100
*/
public static final int DEFAULT_FILE_NAME_LENGTH = 100;
private MinioUtils() {
}
public MinioUtils(String endpoint, String bucketName, String accessKey, String secretKey) {
MinioUtils.endpoint = endpoint;
MinioUtils.bucketName = bucketName;
MinioUtils.accessKey = accessKey;
MinioUtils.secretKey = secretKey;
createMinioClient();
}
/**
* 创建minioClient
*/
public void createMinioClient() {
try {
if (null == minioClient) {
log.info("minioClient create start");
minioClient = MinioClient.builder().endpoint(endpoint).credentials(accessKey, secretKey)
.build();
createBucket();
log.info("minioClient create end");
}
} catch (Exception e) {
log.error("连接MinIO服务器异常：{}", e);
}
}
/**
* 获取上传文件的基础路径
*
* @return url
*/
public static String getBasisUrl() {
return endpoint + SEPARATOR + bucketName + SEPARATOR;
}
/**
* 初始化Bucket
*
* @throws Exception 异常
*/
private static void createBucket()
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException, RegionConflictException {
if (!minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build())) {
minioClient.makeBucket(MakeBucketArgs.builder().bucket(bucketName).build());
}
}
/**
* 验证bucketName是否存在
*
* @return boolean true:存在
*/
public static boolean bucketExists()
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
return minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build());
}
/**
* 创建bucket
*
* @param bucketName bucket名称
*/
public static void createBucket(String bucketName)
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException, RegionConflictException {
if (!minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build())) {
minioClient.makeBucket(MakeBucketArgs.builder().bucket(bucketName).build());
}
}
/**
* 获取存储桶策略
*
* @param bucketName 存储桶名称
* @return json
*/
private JSONObject getBucketPolicy(String bucketName)
throws IOException, InvalidKeyException, InvalidResponseException, BucketPolicyTooLargeException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, InsufficientDataException, ErrorResponseException {
String bucketPolicy = minioClient
.getBucketPolicy(GetBucketPolicyArgs.builder().bucket(bucketName).build());
return JSONObject.parseObject(bucketPolicy);
}
/**
* 获取全部bucket
* <p>
* https://docs.minio.io/cn/java-client-api-reference.html#listBuckets
*/
public static List<Bucket> getAllBuckets()
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
return minioClient.listBuckets();
}
/**
* 根据bucketName获取信息
*
* @param bucketName bucket名称
*/
public static Optional<Bucket> getBucket(String bucketName)
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
return minioClient.listBuckets().stream().filter(b -> b.name().equals(bucketName)).findFirst();
}
/**
* 根据bucketName删除信息
*
* @param bucketName bucket名称
*/
public static void removeBucket(String bucketName)
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
minioClient.removeBucket(RemoveBucketArgs.builder().bucket(bucketName).build());
}
/**
* 判断文件是否存在
*
* @param bucketName 存储桶
* @param objectName 对象
* @return true：存在
*/
public static boolean doesObjectExist(String bucketName, String objectName) {
boolean exist = true;
try {
minioClient
.statObject(StatObjectArgs.builder().bucket(bucketName).object(objectName).build());
} catch (Exception e) {
exist = false;
}
return exist;
}
/**
* 判断文件夹是否存在
*
* @param bucketName 存储桶
* @param objectName 文件夹名称（去掉/）
* @return true：存在
*/
public static boolean doesFolderExist(String bucketName, String objectName) {
boolean exist = false;
try {
Iterable<Result<Item>> results = minioClient.listObjects(
ListObjectsArgs.builder().bucket(bucketName).prefix(objectName).recursive(false).build());
for (Result<Item> result : results) {
Item item = result.get();
if (item.isDir() && objectName.equals(item.objectName())) {
exist = true;
}
}
} catch (Exception e) {
exist = false;
}
return exist;
}
/**
* 根据文件前置查询文件
*
* @param bucketName bucket名称
* @param prefix 前缀
* @param recursive 是否递归查询
* @return MinioItem 列表
*/
public static List<Item> getAllObjectsByPrefix(String bucketName, String prefix,
boolean recursive)
throws ErrorResponseException, InsufficientDataException, InternalException, InvalidBucketNameException, InvalidKeyException, InvalidResponseException,
IOException, NoSuchAlgorithmException, ServerException, XmlParserException {
List<Item> list = new ArrayList<>();
Iterable<Result<Item>> objectsIterator = minioClient.listObjects(
ListObjectsArgs.builder().bucket(bucketName).prefix(prefix).recursive(recursive).build());
if (objectsIterator != null) {
for (Result<Item> o : objectsIterator) {
Item item = o.get();
list.add(item);
}
}
return list;
}
/**
* 获取文件流
*
* @param bucketName bucket名称
* @param objectName 文件名称
* @return 二进制流
*/
public static InputStream getObject(String bucketName, String objectName)
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
return minioClient
.getObject(GetObjectArgs.builder().bucket(bucketName).object(objectName).build());
}
/**
* 断点下载
*
* @param bucketName bucket名称
* @param objectName 文件名称
* @param offset 起始字节的位置
* @param length 要读取的长度
* @return 流
*/
public InputStream getObject(String bucketName, String objectName, long offset, long length)
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
return minioClient.getObject(
GetObjectArgs.builder().bucket(bucketName).object(objectName).offset(offset).length(length)
.build());
}
/**
* 获取路径下文件列表
*
* @param bucketName bucket名称
* @param prefix 文件名称
* @param recursive 是否递归查找，如果是false,就模拟文件夹结构查找
* @return 二进制流
*/
public static Iterable<Result<Item>> listObjects(String bucketName, String prefix,
boolean recursive) {
return minioClient.listObjects(
ListObjectsArgs.builder().bucket(bucketName).prefix(prefix).recursive(recursive).build());
}
/**
* 通过MultipartFile，上传文件
*
* @param bucketName 存储桶
* @param file 文件
* @param objectName 对象名
*/
public static ObjectWriteResponse putObject(String bucketName, MultipartFile file,
String objectName, String contentType)
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
InputStream inputStream = file.getInputStream();
return minioClient.putObject(
PutObjectArgs.builder().bucket(bucketName).object(objectName).contentType(contentType)
.stream(
inputStream, inputStream.available(), -1)
.build());
}
/**
* 上传本地文件
*
* @param bucketName 存储桶
* @param objectName 对象名称
* @param fileName 本地文件路径
*/
public static ObjectWriteResponse putObject(String bucketName, String objectName,
String fileName)
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
return minioClient.uploadObject(
UploadObjectArgs.builder()
.bucket(bucketName).object(objectName).filename(fileName).build());
}
/**
* 通过流上传文件
*
* @param bucketName 存储桶
* @param objectName 文件对象
* @param inputStream 文件流
*/
public static ObjectWriteResponse putObject(String bucketName, String objectName,
InputStream inputStream)
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
return minioClient.putObject(
PutObjectArgs.builder().bucket(bucketName).object(objectName).stream(
inputStream, inputStream.available(), -1)
.build());
}
/**
* 创建文件夹或目录
*
* @param bucketName 存储桶
* @param objectName 目录路径
*/
public static ObjectWriteResponse putDirObject(String bucketName, String objectName)
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
return minioClient.putObject(
PutObjectArgs.builder().bucket(bucketName).object(objectName).stream(
new ByteArrayInputStream(new byte[]{}), 0, -1)
.build());
}
/**
* 获取文件信息, 如果抛出异常则说明文件不存在
*
* @param bucketName bucket名称
* @param objectName 文件名称
*/
public static ObjectStat statObject(String bucketName, String objectName)
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
return minioClient
.statObject(StatObjectArgs.builder().bucket(bucketName).object(objectName).build());
}
/**
* 拷贝文件
*
* @param bucketName bucket名称
* @param objectName 文件名称
* @param srcBucketName 目标bucket名称
* @param srcObjectName 目标文件名称
*/
public static ObjectWriteResponse copyObject(String bucketName, String objectName,
String srcBucketName, String srcObjectName)
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
return minioClient.copyObject(
CopyObjectArgs.builder()
.source(CopySource.builder().bucket(bucketName).object(objectName).build())
.bucket(srcBucketName)
.object(srcObjectName)
.build());
}
/**
* 删除文件
*
* @param bucketName bucket名称
* @param objectName 文件名称
*/
public static void removeObject(String bucketName, String objectName)
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
minioClient
.removeObject(RemoveObjectArgs.builder().bucket(bucketName).object(objectName).build());
}
/**
* 批量删除文件
*
* @param bucketName bucket
* @param keys 需要删除的文件列表
* @return
*/
/*public static Iterable<Result<DeleteError>> removeObjects(String bucketName, List<String> keys) {
List<DeleteObject> objects = new LinkedList<>();
keys.forEach(s -> {
objects.add(new DeleteObject(s));
});
return minioClient.removeObjects(
RemoveObjectsArgs.builder().bucket(bucketName).objects(objects).build());
}*/
public static void removeObjects(String bucketName, List<String> keys) {
List<DeleteObject> objects = new LinkedList<>();
keys.forEach(s -> {
objects.add(new DeleteObject(s));
try {
removeObject(bucketName, s);
} catch (Exception e) {
log.error("批量删除失败！error:{}", e);
}
});
}
/**
* 获取文件外链
*
* @param bucketName bucket名称
* @param objectName 文件名称
* @param expires 过期时间 <=7 秒级
* @return url
*/
public static String getPresignedObjectUrl(String bucketName, String objectName,
Integer expires)
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, InvalidExpiresRangeException, ServerException, InternalException, NoSuchAlgorithmException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
return minioClient.presignedGetObject(bucketName, objectName, expires);
}
/**
* 给presigned URL设置策略
*
* @param bucketName 存储桶
* @param objectName 对象名
* @param expires 过期策略
* @return map
*/
public static Map<String, String> presignedGetObject(String bucketName, String objectName,
Integer expires)
throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, InvalidExpiresRangeException, ServerException, InternalException, NoSuchAlgorithmException, XmlParserException, InvalidBucketNameException, ErrorResponseException {
PostPolicy policy = new PostPolicy(bucketName, objectName,
ZonedDateTime.now().plusDays(7));
policy.setContentType("image/png");
return minioClient.presignedPostPolicy(policy);
}
/**
* 获得上传的URL
*
* @param bucketName 存储桶
* @param objectName 对象名
* @param expires 过期策略（秒）
* @return
*/
public static String presignedPutObject(String bucketName, String objectName, Integer expires) throws ServerException, InvalidBucketNameException, InsufficientDataException, ErrorResponseException, InvalidExpiresRangeException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
if (expires == null) {
// 7天
return minioClient.presignedPutObject(bucketName, objectName);
}
return minioClient.presignedPutObject(bucketName, objectName, expires);
}
/**
* 将URLDecoder编码转成UTF8
*
* @param str
* @return
* @throws UnsupportedEncodingException
*/
public static String getUtf8ByURLDecoder(String str) throws UnsupportedEncodingException {
String url = str.replaceAll("%(?![0-9a-fA-F]{2})", "%25");
return URLDecoder.decode(url, "UTF-8");
}
/**
* 获取上传地址并做文件校验
*
* @param file allowedExtension
* @return String
*/
public static Map<String, Object> getUploadPath(MultipartFile file, String basePath, String[] allowedExtension)
throws FileSizeLimitExceededException, IOException, FileNameLengthLimitExceededException,
InvalidExtensionException {
int fileNamelength = Objects.requireNonNull(file.getOriginalFilename()).length();
if (fileNamelength > MinioUtils.DEFAULT_FILE_NAME_LENGTH) {
throw new FileNameLengthLimitExceededException(MinioUtils.DEFAULT_FILE_NAME_LENGTH);
}
assertAllowed(file, allowedExtension);
return extractFilename(file, basePath);
}
/**
* 文件大小校验
*
* @param file 上传的文件
* @return
* @throws FileSizeLimitExceededException 如果超出最大大小
* @throws InvalidExtensionException
*/
public static final void assertAllowed(MultipartFile file, String[] allowedExtension)
throws FileSizeLimitExceededException, InvalidExtensionException
{
long size = file.getSize();
if (size > DEFAULT_MAX_SIZE)
{
throw new FileSizeLimitExceededException(DEFAULT_MAX_SIZE / 1024 / 1024);
}
String fileName = file.getOriginalFilename();
String extension = getExtension(file);
if (allowedExtension != null && !isAllowedExtension(extension, allowedExtension))
{
if (allowedExtension == MimeTypeUtils.IMAGE_EXTENSION)
{
throw new InvalidExtensionException.InvalidImageExtensionException(allowedExtension, extension,
fileName);
}
else if (allowedExtension == MimeTypeUtils.FLASH_EXTENSION)
{
throw new InvalidExtensionException.InvalidFlashExtensionException(allowedExtension, extension,
fileName);
}
else if (allowedExtension == MimeTypeUtils.MEDIA_EXTENSION)
{
throw new InvalidExtensionException.InvalidMediaExtensionException(allowedExtension, extension,
fileName);
}
else if (allowedExtension == MimeTypeUtils.VIDEO_EXTENSION)
{
throw new InvalidExtensionException.InvalidVideoExtensionException(allowedExtension, extension,
fileName);
}
else
{
throw new InvalidExtensionException(allowedExtension, extension, fileName);
}
}
}
/**
* 判断MIME类型是否是允许的MIME类型
*
* @param extension
* @param allowedExtension
* @return
*/
public static final boolean isAllowedExtension(String extension, String[] allowedExtension)
{
for (String str : allowedExtension)
{
if (str.equalsIgnoreCase(extension))
{
return true;
}
}
return false;
}
/**
* 编码文件名
*/
public static final Map<String, Object> extractFilename(MultipartFile file, String basePath)
{
Map<String, Object> map=new HashMap<>();
map.put("uploadPath",StringUtils.format("{}/{}/{}.{}",basePath, DateUtils.datePathMonth(), Seq.getId(Seq.uploadSeqType), getExtension(file)));
map.put("newFileName",StringUtils.format("{}.{}", Seq.getId(Seq.uploadSeqType), getExtension(file)));
return map;
}
public static final Map<String, Object> extractFilenameText(String fileName, String basePath)
{
Map<String, Object> map=new HashMap<>();
map.put("uploadPath",StringUtils.format("{}/{}/{}.{}",basePath, DateUtils.datePathMonth(), Seq.getId(Seq.uploadSeqType), fileName));
map.put("newFileName",StringUtils.format("{}.{}", Seq.getId(Seq.uploadSeqType),fileName));
return map;
}
/**
* 获取文件名的后缀
*
* @param file 表单文件
* @return 后缀名
*/
public static final String getExtension(MultipartFile file)
{
String extension = FilenameUtils.getExtension(file.getOriginalFilename());
if (StringUtils.isEmpty(extension))
{
extension = MimeTypeUtils.getExtension(Objects.requireNonNull(file.getContentType()));
}
return extension;
}
}1.3 模板填充导出实现接口
1.3.1 controller
package com.ruoyi.web.controller.common;
import com.ruoyi.system.service.ExcelTemplateDemoService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpServletResponse;
/**
* @author qujingye
* @Classname ExcelTemplateDemoController
* @Description 测试 从minio获取文件模板-easyExcel模板填充
* @Date 2023/12/31 12:37
*/
@RestController
@RequestMapping("/excelTemplateDemo")
public class ExcelTemplateDemoController {
@Autowired
private ExcelTemplateDemoService excelTemplateDemoService;
@GetMapping("/test")
public void exportChangeDetail(String resource, HttpServletResponse response) {
excelTemplateDemoService.excelTemplateDemoImport(response);
}
}1.3.2 service
package com.ruoyi.system.service;
import javax.servlet.http.HttpServletResponse;
/**
* @author qujingye
* @title ExcelTemplateDemoService
* @date 2023/12/31 12:40
* @description TODO
*/
public interface ExcelTemplateDemoService {
void excelTemplateDemoImport(HttpServletResponse response);
}
package com.ruoyi.system.service.impl;
import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.ExcelWriter;
import com.alibaba.excel.write.metadata.WriteSheet;
import com.alibaba.excel.write.metadata.fill.FillConfig;
import com.ruoyi.common.config.MinioConfig;
import com.ruoyi.common.utils.DateUtils;
import com.ruoyi.common.utils.MinioUtils;
import com.ruoyi.system.domain.ProductInfo;
import com.ruoyi.system.service.ExcelTemplateDemoService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigDecimal;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
/**
* @author qujingye
* @Classname ExcelTemplateDemoServiceImpl
* @Description TODO
* @Date 2023/12/31 12:42
*/
@Service
public class ExcelTemplateDemoServiceImpl implements ExcelTemplateDemoService {
public static final String EXCEL_TEMPLATE_PATH = "/exportExcelTemplate/商品出库单.xlsx";
private static final Logger log = LoggerFactory.getLogger(ExcelTemplateDemoServiceImpl.class);
/**
* 从minio获取模板进行填充
*
* @param response
* @return void
*/
@Override
public void excelTemplateDemoImport(HttpServletResponse response) {
//输入流
InputStream inputStream = null;
ServletOutputStream outputStream = null;
ExcelWriter excelWriter = null;
List<ProductInfo> result = new ArrayList<>();
//组装测试商品列表数据 编号 名称及规格 单位 数量 单价 金额 备注
getProductInfoTestData(result);
//组装测试其他数据
HashMap<String, Object> totalMap = new HashMap<>();
getOtheroTestData(totalMap);
try {
inputStream = MinioUtils.getObject(MinioConfig.getBucketName(), EXCEL_TEMPLATE_PATH);
//输出流
// 获取文件名并转码
// String name = URLEncoder.encode("商品出库单.xlsx", "UTF-8");
// response.setHeader("Content-Disposition", "attachment;filename=" + name);
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
response.setCharacterEncoding("utf-8");
outputStream = response.getOutputStream();
// 创建填充配置
FillConfig fillConfig = FillConfig.builder().forceNewRow(true).build();
// 创建写对象
excelWriter = EasyExcel.write(outputStream)
.withTemplate(inputStream).build();
// 创建Sheet对象
WriteSheet sheet = EasyExcel.writerSheet(0).build();
sheet.setSheetName("商品出库单");
// 多组填充excel
excelWriter.fill(totalMap, sheet);
excelWriter.fill(result, fillConfig, sheet);
} catch (Exception e) {
log.info("导出失败={}", e.getMessage());
} finally {
if (excelWriter != null) {
excelWriter.finish();
}
//关闭流
if (outputStream != null) {
try {
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
private void getOtheroTestData(HashMap<String, Object> totalMap) {
//客户名称
totalMap.put("name","小张");
//客户编码
totalMap.put("code","001XP");
//日期
totalMap.put("date", DateUtils.getChineseDate());
//总数量
totalMap.put("sumNums",20);
//合计：
totalMap.put("sumMoney",2000);
//主管：
totalMap.put("governor","王主管");
//财务：
totalMap.put("finance","李财务");
//保管员
totalMap.put("guardian","王保管员");
//保管员
totalMap.put("HandlerName","刘经手人");
}
private void getProductInfoTestData(List<ProductInfo> result) {
result.add(new ProductInfo("001", "商品1", "单位1", 2, BigDecimal.valueOf(100), BigDecimal.valueOf(200), "无"));
result.add(new ProductInfo("002", "商品2", "单位1", 2, BigDecimal.valueOf(100), BigDecimal.valueOf(200), "无"));
result.add(new ProductInfo("003", "商品3", "单位1", 2, BigDecimal.valueOf(100), BigDecimal.valueOf(200), "无"));
result.add(new ProductInfo("004", "商品4", "单位1", 2, BigDecimal.valueOf(100), BigDecimal.valueOf(200), "无"));
result.add(new ProductInfo("005", "商品5", "单位1", 2, BigDecimal.valueOf(100), BigDecimal.valueOf(200), "无"));
result.add(new ProductInfo("006", "商品6", "单位1", 2, BigDecimal.valueOf(100), BigDecimal.valueOf(200), "无"));
result.add(new ProductInfo("007", "商品7", "单位1", 2, BigDecimal.valueOf(100), BigDecimal.valueOf(200), "无"));
result.add(new ProductInfo("008", "商品8", "单位1", 2, BigDecimal.valueOf(100), BigDecimal.valueOf(200), "无"));
result.add(new ProductInfo("009", "商品9", "单位1", 2, BigDecimal.valueOf(100), BigDecimal.valueOf(200), "无"));
result.add(new ProductInfo("010", "商品10", "单位1", 2, BigDecimal.valueOf(100), BigDecimal.valueOf(200), "无"));
}
}📝结束语：
总结不易😄觉得有用的话，还请各位大佬动动发财的小手
给小瞿扣个三连：⛳️ 点赞⭐️收藏 ❤️ 关注
这个对我真的非常重要，拜托啦！
本人水平有限，如有纰漏，欢迎各位大佬评论指正！💞
