下载导出
import com.hpay.admin.api.vo.Message;
import com.hpay.admin.dubbo.IConfigDubboService;
import com.hpay.admin.dubbo.IFileExportLogDubboService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletResponse;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;
/**
* 文件公共操作
* @author Garcia
*/
@Controller
@RequestMapping("/file")
@Slf4j
public class FileCommonController {
private static final String FILE_SEPARATOR = System.getProperties().getProperty("file.separator");
private static final String TXT = "txt";
private static final String CSV = "csv";
private static final String XLS = "xls";
private static final String XLSX = "xlsx";
@Autowired
private IConfigDubboService configService;
@Resource
private IFileExportLogDubboService fileExportLogDubboService;
/**
* 下载Excel
*
* @param response
* @param excName
*/
@RequestMapping("downExcel")
public void downExcel(HttpServletResponse response, String excName,String fileType,String downFileName) {
if (StringUtils.isBlank(excName)) {
log.warn("文件名为空");
return;
}
if (StringUtils.isBlank(fileType)) {
log.warn("文件类型为空");
return;
}
String path = configService.getProperty("tempExcelPath");
String fileName = downFileName + "-" + excName;
if (TXT.equals(fileType)||CSV.equals(fileType)){
writeTxt(response,excName,path,fileName);
}else if(XLS.equals(fileType) || XLSX.equals(fileType)){
writeExcel(response,excName,path,fileName);
}
}
private void writeTxt(HttpServletResponse response, String excName,String path,String fileName){
//设置文件路径
File file = new File(path + FILE_SEPARATOR + excName);
if (file.exists()) {
response.setContentType("application/binary; charset=UTF-8");
response.setCharacterEncoding("UTF-8");
try {
response.setHeader("Content-Disposition", "attachment; filename="+ URLEncoder.encode(fileName,StandardCharsets.UTF_8));
} catch (UnsupportedEncodingException e) {
log.error("其他错误！", e);
}
byte[] buffer = new byte[1024];
FileInputStream fis = null;
BufferedInputStream bis = null;
try {
fis = new FileInputStream(file);
bis = new BufferedInputStream(fis);
OutputStream os = response.getOutputStream();
int i = bis.read(buffer);
while (i != -1) {
os.write(buffer, 0, i);
i = bis.read(buffer);
}
} catch (Exception e) {
log.error("写出文本文件错误！", e);
} finally {
if (bis != null) {
try {
bis.close();
} catch (IOException e) {
log.error("关闭流错误！", e);
}
}
if (fis != null) {
try {
fis.close();
} catch (IOException e) {
log.error("关闭流错误！", e);
}
}
delexcel(excName);
}
}
}
private void writeExcel(HttpServletResponse response, String excName,String path,String fileName){
File file = new File(path + FILE_SEPARATOR + excName);
if (file.exists()) {
HSSFWorkbook wb = null;
try {
InputStream is = new FileInputStream(file);
wb = new HSSFWorkbook(is);
} catch (Exception e) {
log.error("读取Excel文件错误！", e);
}
response.setContentType("application/binary; charset=UTF-8");
response.setCharacterEncoding("UTF-8");
try {
response.setHeader("Content-Disposition", "attachment; filename="
+ URLEncoder.encode(fileName,StandardCharsets.UTF_8));
} catch (UnsupportedEncodingException e) {
log.error("其他错误！", e);
}
OutputStream os = null;
try {
os = response.getOutputStream();
if (wb != null) {
wb.write(os);
}
if (os != null) {
os.flush();
}
} catch (IOException e) {
log.error("写出Excel文件错误！", e);
} finally {
if (os != null) {
try {
os.close();
} catch (IOException e) {
log.error("关闭流错误！", e);
}
}
delexcel(excName);
}
}
}
/**
* 删除服务器Excel文件
*
* @param excName
* @return
*/
@RequestMapping("delExcel")
@ResponseBody
public Message delexcel(String excName) {
String path = configService.getProperty("tempExcelPath");
try{
File file = new File(path + FILE_SEPARATOR + excName);
long len = file.length();
Thread.sleep(3000);
if (len!=file.length()){
return Message.error("当前文件正在操作，请稍后再删");
}
file.delete();
fileExportLogDubboService.deleteByName(excName);
}catch (Exception e){
log.error("文件删除异常",e);
}
return Message.success();
}生成Excel文章来源：https://uudwc.com/A/DN9aR
String []titles = new String[]{"",""};
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet=generateContentSheet(wb,titles);
createRow(wb,sheet,rowList);
private void createRow(HSSFWorkbook wb,HSSFSheet sheet, List<List<Object>> warnlist) throws ClassCastException{
HSSFRow row =null;
HSSFCellStyle style = wb.createCellStyle();
style.setWrapText(true);
for (List<Object> value : warnlist) {
row = sheet.createRow(sheet.getLastRowNum() + 1);
for (int i = 0; i < value.size(); i++) {
Cell cell = row.createCell(i);
cell.setCellStyle(style);
if(value.get(i) instanceof String){
cell.setCellValue((String)value.get(i));
}else if(value.get(i) instanceof Integer){
cell.setCellValue((Integer)value.get(i));
}else if(value.get(i) instanceof Double){
cell.setCellValue((Double)value.get(i));
}else if(value.get(i) instanceof Boolean){
cell.setCellValue((Boolean)value.get(i));
}else if(value.get(i) instanceof Date){
cell.setCellValue((Date)value.get(i));
}else if(value.get(i) instanceof Calendar){
cell.setCellValue((Calendar)value.get(i));
}else if(value.get(i) instanceof RichTextString){
cell.setCellValue((RichTextString)value.get(i));
}else if(value.get(i) instanceof Long){
cell.setCellValue((Long)value.get(i));
}else if(value.get(i) instanceof BigDecimal){
cell.setCellValue(value.get(i).toString());
}else if(value.get(i)==null){
cell.setCellValue("");
}else{
log.error("不支持导出类型:{},{}",value.get(i).getClass(),value.get(i));
throw new ClassCastException("不支持导出类型:"+value.get(i).getClass()+","+value.get(i));
}
}
}
}
private HSSFSheet generateContentSheet(HSSFWorkbook workbook,String[] titles){
HSSFSheet sheet = null;
sheet = workbook.createSheet("审评报告");
HSSFRow row = sheet.createRow(0);
sheet.autoSizeColumn(0);
sheet.setColumnWidth(0,sheet.getColumnWidth(0)*17/10);
sheet.autoSizeColumn(1);
sheet.setColumnWidth(1,sheet.getColumnWidth(1)*27/10);
sheet.autoSizeColumn(2);
sheet.setColumnWidth(2,sheet.getColumnWidth(2)*17/10);
sheet.autoSizeColumn(3);
sheet.setColumnWidth(3,sheet.getColumnWidth(3)*17/10);
sheet.autoSizeColumn(4);
sheet.setColumnWidth(4,sheet.getColumnWidth(4)*17/10);
CellStyle style;
Font headerFont = workbook.createFont();
// headerFont.setBoldweight(Font.BOLDWEIGHT_BOLD);
style = createBorderedStyle(workbook);
// style.setAlignment(CellStyle.ALIGN_CENTER);
// style.setFillForegroundColor(IndexedColors.LIGHT_CORNFLOWER_BLUE.getIndex());
// style.setFillPattern(BorderStyle.SOLID_FOREGROUND);
// style.setFont(headerFont);
for (int i = 0; i < titles.length; i++) {
HSSFCell cell = row.createCell(i);
cell.setCellValue(titles[i]);
cell.setCellStyle(style);
}
return sheet;
}
/**
* 生产单元格样式
* @param wb
* @return
*/
private static CellStyle createBorderedStyle(Workbook wb) {
CellStyle style = wb.createCellStyle();
// style.setBorderRight(BorderStyle.THIN);
// style.setRightBorderColor(IndexedColors.BLACK.getIndex());
// style.setBorderBottom(BorderStyle.THIN);
// style.setBottomBorderColor(IndexedColors.BLACK.getIndex());
// style.setBorderLeft(BorderStyle.THIN);
// style.setLeftBorderColor(IndexedColors.BLACK.getIndex());
// style.setBorderTop(BorderStyle.THIN);
// style.setTopBorderColor(IndexedColors.BLACK.getIndex());
return style;
}文章来源地址https://uudwc.com/A/DN9aR
