动态生成Excel文件、目录
@GetMapping(value = "/downloadZip")
public void downloadZips(HttpServletRequest request,HttpServletResponse response,Long taskId) throws IOException {
List<taskFilesVO> vo=caseFilesService.getTaskFiles(taskId);
String rootPath = request.getSession().getServletContext().getRealPath("/");
File temDir = new File(rootPath + "/" + "定价文件");
if(!temDir.exists()){
temDir.mkdirs();
}
for (taskFilesVO taskvo:vo) {
//动态生成目录
File folder = new File(temDir + "/" +taskvo.getWorkStepName());
if(!folder.exists()){
folder.mkdirs();
}
if(taskvo.getWorkStepId()==0)
createCoverExcel(folder+ "/封皮.xls",taskvo.getPrTaskDetail());
else if(taskvo.getWorkStepId()==1)
createLogExcel(folder+ "/目录.xls",vo);
else{
for (PrTaskFile file : taskvo.getPrTaskFileList()) {
byte[] f=fileUploadService.downloadFile(file.getFileUrl());//将服务器文件下载到本地
FileOutputStream fos = new FileOutputStream(folder+ "/" +file.getFileName());
fos.write(f);
}
}
}
String zipFrontFile="定价文件.zip";
zipFrontFile = URLEncoder.encode(zipFrontFile,"UTF-8");//指定编码格式
response.setHeader("Content-Disposition","attachment; filename=" +zipFrontFile);
response.setContentType("application/zip");// 定义输出类型 如果带了;号 IE下载会无效果
response.setStatus(200);
ZipFilesUtil.toZip(temDir.getPath(), response.getOutputStream(),true);
delFile(temDir);
}
//生成Excel
public void createCoverExcel(String filename, taskDetailVO prTaskDetail) {
try {
FileOutputStream out = new FileOutputStream(filename);
HSSFWorkbook workBook = new HSSFWorkbook();
HSSFSheet mySheet = workBook.createSheet();
workBook.setSheetName(0, "cover");
int rowNomber=-1;
HSSFRow myRow = mySheet.createRow(++rowNomber);
HSSFCellStyle style = workBook.createCellStyle();
style.setAlignment(CellStyle.ALIGN_CENTER);
style.setVerticalAlignment(CellStyle.VERTICAL_CENTER);
style.setWrapText(true);
//设置字体样式
HSSFFont font = workBook.createFont();
font.setFontName("宋体");
font.setFontHeightInPoints((short) 10);
style.setFont(font);
//设置标题行，每一列的标题
HSSFCell cell = myRow.createCell((short) 0);
cell.setCellStyle(style);
cell.setCellValue("政府制定价格卷宗");
CellRangeAddress region = new CellRangeAddress(0, 0, 0, 1);
mySheet.addMergedRegion(region);
for (int i = 1; i <= 5; i++) {
HSSFRow row = mySheet.createRow(++rowNomber);
HSSFCell cellfirst = row.createCell((short) 0);
HSSFCell cellsecond = row.createCell((short) 1);
if (i == 1) {
cellfirst.setCellValue("定价项目");
cellsecond.setCellValue(prTaskDetail.getName());
}
else if (i == 2) {
cellfirst.setCellValue("定价单位");
cellsecond.setCellValue(prTaskDetail.getUnitName());
}
else if (i == 3) {
cellfirst.setCellValue("定价时间");
if(prTaskDetail.getFinishTime()!=null)
{
HSSFCellStyle dateCellStyle=workBook.createCellStyle();
short df=workBook.createDataFormat().getFormat("yyyy-mm-dd");
dateCellStyle.setDataFormat(df);
String temp= new SimpleDateFormat("yyyy-MM-dd").format(prTaskDetail.getFinishTime());
cellsecond.setCellValue(temp);
}
}
else if (i == 4) {
cellfirst.setCellValue("定价文件编号");
cellsecond.setCellValue(prTaskDetail.getReferenceNumber());
}
else if (i == 5) {
cellfirst.setCellValue("保存期限");
cellsecond.setCellValue("20年");
}
}
workBook.write(out);
out.close();
}
catch (Exception e) {
e.printStackTrace();
}
}
//生成Excel
public void createLogExcel(String filename, List<taskFilesVO> filesList) {
try {
//设置输出到本地的excel文件的名字和路径
FileOutputStream out = new FileOutputStream(filename);
//生成excel文档对象
HSSFWorkbook workBook = new HSSFWorkbook();
//创建工作簿
HSSFSheet mySheet = workBook.createSheet();
//设置工作簿的名字
workBook.setSheetName(0, "catalog");
//创建第一行，标题行
int rowNomber=-1;
HSSFRow myRow = mySheet.createRow(++rowNomber);
HSSFCellStyle style = workBook.createCellStyle();
//设置字体样式
HSSFFont font = workBook.createFont();
font.setFontName("宋体");
font.setFontHeightInPoints((short) 10);
style.setFont(font);
//设置标题行，每一列的标题
HSSFCell cell = myRow.createCell((short) 0);
cell.setCellStyle(style);
cell.setCellValue("序号");
cell = myRow.createCell((short) 1);
cell.setCellStyle(style);
cell.setCellValue("材料名称");
cell = myRow.createCell((short) 2);
cell.setCellStyle(style);
cell.setCellValue("页码");
cell = myRow.createCell((short) 3);
cell.setCellStyle(style);
cell.setCellValue("备注");
for(int i = 1; i <= filesList.size(); i++){
HSSFRow row = mySheet.createRow(++rowNomber);
taskFilesVO file = filesList.get(i-1);
//创建行中的列，并赋值
HSSFCell cellfirst = row.createCell((short) 0);
cellfirst.setCellValue(i);
HSSFCell cellsecond = row.createCell((short) 1);
cellsecond.setCellValue(file.getWorkStepName());
}
//写文件到本地
workBook.write(out);
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
//删除本地文件及目录
public boolean delFile(File file) {
if (!file.exists()) {
return false;
}
if (file.isDirectory()) {
File[] files = file.listFiles();
for (File f : files) {
delFile(f);
}
}
return file.delete();
}
//下载代码到本地
public byte[] downloadFile(String fileUrl) throws IOException {
String group = fileUrl.substring(0, fileUrl.indexOf("/"));
String path = fileUrl.substring(fileUrl.indexOf("/") + 1);
DownloadByteArray downloadByteArray = new DownloadByteArray();
byte[] bytes = fastFileStorageClient.downloadFile(group, path, downloadByteArray);
return bytes;
}
压缩工具类
package com.panchina.util;
import java.io.*;
import java.util.List;
import java.util.zip.*;
public class ZipFilesUtil {
private static final int BUFFER_SIZE = 2 * 1024;
/**
* 压缩成ZIP 方法1
*
* @param srcDir
* 压缩文件夹路径
* @param out
* 压缩文件输出流
* @param KeepDirStructure
* 是否保留原来的目录结构,true:保留目录结构;
* false:所有文件跑到压缩包根目录下(注意：不保留目录结构可能会出现同名文件,会压缩失败)
* @throws RuntimeException
* 压缩失败会抛出运行时异常
*/
public static void toZip(String srcDir, OutputStream out, boolean KeepDirStructure){
ZipOutputStream zos = null;
try {
zos = new ZipOutputStream(out);
File sourceFile = new File(srcDir);
compress(sourceFile, zos, sourceFile.getName(), KeepDirStructure);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (zos != null) {
try {
zos.close();//最后必须关闭ZipOutputStream,否则可能压缩文件数据格式不正确
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
*
* 递归压缩方法
*
* @param sourceFile
* 源文件
*
* @param zos
* zip输出流
*
* @param name
* 压缩后的名称
*
* @param KeepDirStructure
* 是否保留原来的目录结构,true:保留目录结构;
*
* false:所有文件跑到压缩包根目录下(注意：不保留目录结构可能会出现同名文件,会压缩失败)
*
* @throws Exception
*
*/
private static void compress(File sourceFile, ZipOutputStream zos, String name,
boolean KeepDirStructure) {
byte[] buf = new byte[BUFFER_SIZE];
try {
if (sourceFile.isFile()) {
// 向zip输出流中添加一个zip实体，构造器中name为zip实体的文件的名字
zos.putNextEntry(new ZipEntry(name));
// copy文件到zip输出流中
int len;
FileInputStream in = new FileInputStream(sourceFile);
while ((len = in.read(buf)) != -1) {
zos.write(buf, 0, len);
}
// Complete the entry
zos.closeEntry();
in.close();
} else {
File[] listFiles = sourceFile.listFiles();
if (listFiles == null || listFiles.length == 0) {
// 需要保留原来的文件结构时,需要对空文件夹进行处理
if (KeepDirStructure) {
// 空文件夹的处理
zos.putNextEntry(new ZipEntry(name + "/"));
// 没有文件，不需要文件的copy
zos.closeEntry();
}
} else {
for (File file : listFiles) {
// 判断是否需要保留原来的文件结构
if (KeepDirStructure) {
// 注意：file.getName()前面需要带上父文件夹的名字加一斜杠,
// 不然最后压缩包中就不能保留原来的文件结构,即：所有文件都跑到压缩包根目录下了
compress(file, zos, name + "/" + file.getName(), KeepDirStructure);
} else {
compress(file, zos, file.getName(), KeepDirStructure);
}
}
}
}
}catch(Exception e){
e.printStackTrace();
}
}
}
前端vue调用下载接口
downloadAll() {
axios({
method: "GET",
url: "/price/api/electronicFiles/downloadZip",
params: {
taskId: this.$route.query.id
},
responseType: "blob"
})
.then(res => {
// console.log(res);
/*let blob = new Blob([res.data], {
type: "application/zip"
});
let url = window.URL.createObjectURL(blob);
window.location.href = url;*/
const fileName = res.headers["content-disposition"]
.split("=")[1]
.split(".");
const _res = res.data;
let blob = new Blob([_res]);
let downloadName =
decodeURIComponent(fileName[0]) + "." + fileName[1]; //下载后文件名
if ("msSaveOrOpenBlob" in navigator) {
window.navigator.msSaveOrOpenBlob(blob, downloadName);//IE中使用Blob生成的是不带域名的blob链接,Google等浏览器生成的是带域名。所以在IE下通过a标签的href来下载是不行的。
} else {
let downloadElement = document.createElement("a");
let href = window.URL.createObjectURL(blob); //创建下载的链接
downloadElement.href = href;
downloadElement.download = downloadName;
downloadElement.click(); //点击下载
window.URL.revokeObjectURL(href); //释放掉blob对象
}
})
.catch(error => this.$message.error(error));
})
