Springboot獲取文件內(nèi)容如何將MultipartFile轉(zhuǎn)File
更新時(shí)間：2024年01月08日 16:42:28 作者：Alex_81D
本文給大家介紹Springboot獲取文件內(nèi)容,將MultipartFile轉(zhuǎn)File方法,本文結(jié)合示例代碼給大家介紹的非常詳細(xì),感興趣的朋友一起看看吧
文件上傳以前是噩夢(mèng)一樣的存在，覺得很少麻煩，后來仔細(xì)研究后發(fā)現(xiàn)通過前端傳文件去調(diào)取后端接口并不是特別復(fù)雜，接下來我詳細(xì)說一下通過接口的方式接收前端傳過來的文件，并且解析文件中內(nèi)容的方法
話不多說，開整代碼
@RestController
@RequestMapping("/api/invoice")
public class InvoiceController {
private static Logger logger = LoggerUtil.getLogger();
@Autowired
private InvoiceService invoiceService;
@RequestMapping(value = "/getInvoiceInfo", method = RequestMethod.POST)
@ResponseBody
private String getInvoiceInfo(@RequestParam("file") MultipartFile file) {
logger.info("/getInvoiceInfo接口調(diào)用");
return invoiceService.getInvoiceInfo(file);
}
}剩下的寫業(yè)務(wù)層，就不多謝業(yè)務(wù)了，主要寫一下怎么轉(zhuǎn)換并獲取內(nèi)容
/**
* 將MultipartFile轉(zhuǎn)換為File
* @param multiFile
* @return
*/
public File multipartFileToFile(MultipartFile multiFile) {
// 獲取文件名
String fileName = multiFile.getOriginalFilename();
// 獲取文件后綴(.xml)
String suffix = fileName.substring(fileName.lastIndexOf("."));
// 若要防止生成的臨時(shí)文件重復(fù),需要在文件名后添加隨機(jī)碼
try {
//"tmp", ".txt"
//fileName這塊可以根據(jù)自己的業(yè)務(wù)需求進(jìn)行修改，我這里沒有做任何處理
File file = File.createTempFile(fileName, suffix);
multiFile.transferTo(file);
return file;
} catch (Exception e) {
logger.error("MultipartFile轉(zhuǎn)File失敗",e);
}
return null;
}//在業(yè)務(wù)側(cè)寫代碼時(shí)記得處理掉這個(gè)臨時(shí)文件
if (file!=null){
file.deleteOnExit();
}以上代碼就是將MultipartFile轉(zhuǎn)換為File的相關(guān)代碼
再說說怎么把txt文件內(nèi)容和excel讀取出來處理
上代碼：讀取txt
@RequestMapping(value = "/uploadFileTxt", method = RequestMethod.POST)
@ResponseBody
private AjaxResult uploadFileTxt(@RequestParam("file") MultipartFile file) throws Exception {
System.out.println("uploadFileTxt");
telephoneService.uploadFileTxt(file);
return AjaxResult.success();
}@Override
public void uploadFileTxt(MultipartFile txtFile) {
Set<String> txtFileSet = new HashSet<>();
String fileName = txtFile.getOriginalFilename();
try {
txtFileSet = uploadRtnMap(txtFile);
}catch (IOException e){
e.printStackTrace();
}
//業(yè)務(wù)代碼
//remove(new QueryWrapper<>());
// txtMapper.deleteTxtdata();
// for(String txt:txtFileSet){
// TxtVO txtVO = new TxtVO();
// txtVO.setTelephone(txt);
// txtVO.setFilename(fileName);
// txtVO.setCreateTime(new Date());
// save(txtVO);
// }
}
public static Set<String> uploadRtnMap(MultipartFile file) throws IOException {
InputStream is = null;
InputStreamReader isReader = null;
BufferedReader br = null;
Set<String> phoneList = new HashSet<String>();
try {
is = file.getInputStream();
isReader = new InputStreamReader(is, StandardCharsets.UTF_8);
br = new BufferedReader(isReader);
//循環(huán)逐行讀取
String str;
while ((str = br.readLine()) != null) {
System.out.println(str);
phoneList.add(str);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (is != null) {
is.close();
}
if (isReader != null) {
isReader.close();
}
if (br != null) {
br.close();
}
}
return phoneList;
}讀取excel
@Override
public void uploadFileExcel(MultipartFile excelFile) {
ExcelUtil<ExcelVO> util = new ExcelUtil<ExcelVO>(ExcelVO.class);
List<ExcelVO> excelList = new ArrayList<>();
try{
//excel里面的內(nèi)容
excelList = util.importExcel(excelFile.getInputStream());
} catch (Exception e) {
e.printStackTrace();
}
// 業(yè)務(wù)
// excelService.saveExcel(excelList);
}提供幾個(gè)工具類給大家
ExcelVO對(duì)象
@Data
@TableName("exceldata")
public class ExcelVO {
//id
@TableId(type= IdType.AUTO)
private String id;
//手機(jī)號(hào)
@Excel(name = "手機(jī)號(hào)")
private String telephone;
//QQ號(hào)
@Excel(name = "QQ號(hào)")
private String qq;
//創(chuàng)建時(shí)間
private Date createTime;
}ExcelUtil.java工具類
import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.RegExUtils;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ooxml.POIXMLDocumentPart;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.ss.util.CellRangeAddressList;
import org.apache.poi.util.IOUtils;
import org.apache.poi.xssf.streaming.SXSSFWorkbook;
import org.apache.poi.xssf.usermodel.*;
import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTMarker;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.*;
import java.util.stream.Collectors;
/**
* Excel相關(guān)處理
*/
public class ExcelUtil<T>
{
private static final Logger log = LoggerFactory.getLogger(ExcelUtil.class);
public static final String FORMULA_REGEX_STR = "=|-|\\+|@";
public static final String[] FORMULA_STR = { "=", "-", "+", "@" };
/**
* Excel sheet最大行數(shù)，默認(rèn)65536
*/
public static final int sheetSize = 65536;
/**
* 工作表名稱
*/
private String sheetName;
/**
* 導(dǎo)出類型（EXPORT:導(dǎo)出數(shù)據(jù)；IMPORT：導(dǎo)入模板）
*/
private Type type;
/**
* 工作薄對(duì)象
*/
private Workbook wb;
/**
* 工作表對(duì)象
*/
private Sheet sheet;
/**
* 樣式列表
*/
private Map<String, CellStyle> styles;
/**
* 導(dǎo)入導(dǎo)出數(shù)據(jù)列表
*/
private List<T> list;
/**
* 注解列表
*/
private List<Object[]> fields;
/**
* 當(dāng)前行號(hào)
*/
private int rownum;
/**
* 標(biāo)題
*/
private String title;
/**
* 最大高度
*/
private short maxHeight;
/**
* 統(tǒng)計(jì)列表
*/
private Map<Integer, Double> statistics = new HashMap<Integer, Double>();
/**
* 數(shù)字格式
*/
private static final DecimalFormat DOUBLE_FORMAT = new DecimalFormat("######0.00");
/**
* 實(shí)體對(duì)象
*/
public Class<T> clazz;
/**
* 需要排除列屬性
*/
public String[] excludeFields;
public ExcelUtil(Class<T> clazz)
{
this.clazz = clazz;
}
/**
* 隱藏Excel中列屬性
*
* @param fields 列屬性名 示例[單個(gè)"name"/多個(gè)"id","name"]
* @throws Exception
*/
public void hideColumn(String... fields)
{
this.excludeFields = fields;
}
public void init(List<T> list, String sheetName, String title, Type type)
{
if (list == null)
{
list = new ArrayList<T>();
}
this.list = list;
this.sheetName = sheetName;
this.type = type;
this.title = title;
createExcelField();
createWorkbook();
createTitle();
}
/**
* 創(chuàng)建excel第一行標(biāo)題
*/
public void createTitle()
{
if (StringUtils.isNotEmpty(title))
{
Row titleRow = sheet.createRow(rownum == 0 ? rownum++ : 0);
titleRow.setHeightInPoints(30);
Cell titleCell = titleRow.createCell(0);
titleCell.setCellStyle(styles.get("title"));
titleCell.setCellValue(title);
sheet.addMergedRegion(new CellRangeAddress(titleRow.getRowNum(), titleRow.getRowNum(), titleRow.getRowNum(),
this.fields.size() - 1));
}
}
/**
* 對(duì)excel表單默認(rèn)第一個(gè)索引名轉(zhuǎn)換成list
*
* @param is 輸入流
* @return 轉(zhuǎn)換后集合
*/
public List<T> importExcel(InputStream is) throws Exception
{
return importExcel(is, 0);
}
/**
* 對(duì)excel表單默認(rèn)第一個(gè)索引名轉(zhuǎn)換成list
*
* @param is 輸入流
* @param titleNum 標(biāo)題占用行數(shù)
* @return 轉(zhuǎn)換后集合
*/
public List<T> importExcel(InputStream is, int titleNum) throws Exception
{
return importExcel(StringUtils.EMPTY, is, titleNum);
}
/**
* 對(duì)excel表單指定表格索引名轉(zhuǎn)換成list
*
* @param sheetName 表格索引名
* @param titleNum 標(biāo)題占用行數(shù)
* @param is 輸入流
* @return 轉(zhuǎn)換后集合
*/
public List<T> importExcel(String sheetName, InputStream is, int titleNum) throws Exception
{
this.type = Excel.Type.IMPORT;
this.wb = WorkbookFactory.create(is);
List<T> list = new ArrayList<T>();
// 如果指定sheet名,則取指定sheet中的內(nèi)容 否則默認(rèn)指向第1個(gè)sheet
Sheet sheet = StringUtils.isNotEmpty(sheetName) ? wb.getSheet(sheetName) : wb.getSheetAt(0);
if (sheet == null)
{
throw new IOException("文件sheet不存在");
}
boolean isXSSFWorkbook = !(wb instanceof HSSFWorkbook);
Map<String, PictureData> pictures;
if (isXSSFWorkbook)
{
pictures = getSheetPictures07((XSSFSheet) sheet, (XSSFWorkbook) wb);
}
else
{
pictures = getSheetPictures03((HSSFSheet) sheet, (HSSFWorkbook) wb);
}
// 獲取最后一個(gè)非空行的行下標(biāo)，比如總行數(shù)為n，則返回的為n-1
int rows = sheet.getLastRowNum();
if (rows > 0)
{
// 定義一個(gè)map用于存放excel列的序號(hào)和field.
Map<String, Integer> cellMap = new HashMap<String, Integer>();
// 獲取表頭
Row heard = sheet.getRow(titleNum);
for (int i = 0; i < heard.getPhysicalNumberOfCells(); i++)
{
Cell cell = heard.getCell(i);
if (StringUtils.isNotNull(cell))
{
String value = this.getCellValue(heard, i).toString();
cellMap.put(value, i);
}
else
{
cellMap.put(null, i);
}
}
// 有數(shù)據(jù)時(shí)才處理 得到類的所有field.
List<Object[]> fields = this.getFields();
Map<Integer, Object[]> fieldsMap = new HashMap<Integer, Object[]>();
for (Object[] objects : fields)
{
Excel attr = (Excel) objects[1];
Integer column = cellMap.get(attr.name());
if (column != null)
{
fieldsMap.put(column, objects);
}
}
for (int i = titleNum + 1; i <= rows; i++)
{
// 從第2行開始取數(shù)據(jù),默認(rèn)第一行是表頭.
Row row = sheet.getRow(i);
// 判斷當(dāng)前行是否是空行
if (isRowEmpty(row))
{
continue;
}
T entity = null;
for (Map.Entry<Integer, Object[]> entry : fieldsMap.entrySet())
{
Object val = this.getCellValue(row, entry.getKey());
// 如果不存在實(shí)例則新建.
entity = (entity == null ? clazz.newInstance() : entity);
// 從map中得到對(duì)應(yīng)列的field.
Field field = (Field) entry.getValue()[0];
Excel attr = (Excel) entry.getValue()[1];
// 取得類型,并根據(jù)對(duì)象類型設(shè)置值.
Class<?> fieldType = field.getType();
if (String.class == fieldType)
{
String s = Convert.toStr(val);
if (StringUtils.endsWith(s, ".0"))
{
val = StringUtils.substringBefore(s, ".0");
}
else
{
String dateFormat = field.getAnnotation(Excel.class).dateFormat();
if (StringUtils.isNotEmpty(dateFormat))
{
val = parseDateToStr(dateFormat, val);
}
else
{
val = Convert.toStr(val);
}
}
}
else if ((Integer.TYPE == fieldType || Integer.class == fieldType) && StringUtils.isNumeric(Convert.toStr(val)))
{
val = Convert.toInt(val);
}
else if ((Long.TYPE == fieldType || Long.class == fieldType) && StringUtils.isNumeric(Convert.toStr(val)))
{
val = Convert.toLong(val);
}
else if (Double.TYPE == fieldType || Double.class == fieldType)
{
val = Convert.toDouble(val);
}
else if (Float.TYPE == fieldType || Float.class == fieldType)
{
val = Convert.toFloat(val);
}
else if (BigDecimal.class == fieldType)
{
val = Convert.toBigDecimal(val);
}
else if (Date.class == fieldType)
{
if (val instanceof String)
{
val = DateUtils.parseDate(val);
}
else if (val instanceof Double)
{
val = DateUtil.getJavaDate((Double) val);
}
}
else if (Boolean.TYPE == fieldType || Boolean.class == fieldType)
{
val = Convert.toBool(val, false);
}
if (StringUtils.isNotNull(fieldType))
{
String propertyName = field.getName();
if (StringUtils.isNotEmpty(attr.targetAttr()))
{
propertyName = field.getName() + "." + attr.targetAttr();
}
else if (StringUtils.isNotEmpty(attr.readConverterExp()))
{
val = reverseByExp(Convert.toStr(val), attr.readConverterExp(), attr.separator());
}
/*else if (StringUtils.isNotEmpty(attr.dictType()))
{
val = reverseDictByExp(Convert.toStr(val), attr.dictType(), attr.separator());
}*/
else if (!attr.handler().equals(ExcelHandlerAdapter.class))
{
val = dataFormatHandlerAdapter(val, attr);
}
else if (ColumnType.IMAGE == attr.cellType() && StringUtils.isNotEmpty(pictures))
{
PictureData image = pictures.get(row.getRowNum() + "_" + entry.getKey());
if (image == null)
{
val = "";
}
else
{
byte[] data = image.getData();
//val = FileUtils.writeImportBytes(data);
}
}
ReflectUtils.invokeSetter(entity, propertyName, val);
}
}
list.add(entity);
}
}
return list;
}
/**
* 對(duì)list數(shù)據(jù)源將其里面的數(shù)據(jù)導(dǎo)入到excel表單
*
* @param list 導(dǎo)出數(shù)據(jù)集合
* @param sheetName 工作表的名稱
* @return 結(jié)果
*/
public AjaxResult exportExcel(List<T> list, String sheetName)
{
return exportExcel(list, sheetName, StringUtils.EMPTY);
}
/**
* 對(duì)list數(shù)據(jù)源將其里面的數(shù)據(jù)導(dǎo)入到excel表單
*
* @param list 導(dǎo)出數(shù)據(jù)集合
* @param sheetName 工作表的名稱
* @param title 標(biāo)題
* @return 結(jié)果
*/
public AjaxResult exportExcel(List<T> list, String sheetName, String title)
{
this.init(list, sheetName, title, Type.EXPORT);
return exportExcel();
}
/**
* 對(duì)list數(shù)據(jù)源將其里面的數(shù)據(jù)導(dǎo)入到excel表單
*
* @param response 返回?cái)?shù)據(jù)
* @param list 導(dǎo)出數(shù)據(jù)集合
* @param sheetName 工作表的名稱
* @return 結(jié)果
*/
public void exportExcel(HttpServletResponse response, List<T> list, String sheetName)
{
exportExcel(response, list, sheetName, StringUtils.EMPTY);
}
/**
* 對(duì)list數(shù)據(jù)源將其里面的數(shù)據(jù)導(dǎo)入到excel表單
*
* @param response 返回?cái)?shù)據(jù)
* @param list 導(dǎo)出數(shù)據(jù)集合
* @param sheetName 工作表的名稱
* @param title 標(biāo)題
* @return 結(jié)果
*/
public void exportExcel(HttpServletResponse response, List<T> list, String sheetName, String title)
{
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
response.setCharacterEncoding("utf-8");
this.init(list, sheetName, title, Type.EXPORT);
exportExcel(response);
}
/**
* 對(duì)list數(shù)據(jù)源將其里面的數(shù)據(jù)導(dǎo)入到excel表單
*
* @param sheetName 工作表的名稱
* @return 結(jié)果
*/
public AjaxResult importTemplateExcel(String sheetName)
{
return importTemplateExcel(sheetName, StringUtils.EMPTY);
}
/**
* 對(duì)list數(shù)據(jù)源將其里面的數(shù)據(jù)導(dǎo)入到excel表單
*
* @param sheetName 工作表的名稱
* @param title 標(biāo)題
* @return 結(jié)果
*/
public AjaxResult importTemplateExcel(String sheetName, String title)
{
this.init(null, sheetName, title, Type.IMPORT);
return exportExcel();
}
/**
* 對(duì)list數(shù)據(jù)源將其里面的數(shù)據(jù)導(dǎo)入到excel表單
*
* @param sheetName 工作表的名稱
* @return 結(jié)果
*/
public void importTemplateExcel(HttpServletResponse response, String sheetName)
{
importTemplateExcel(response, sheetName, StringUtils.EMPTY);
}
/**
* 對(duì)list數(shù)據(jù)源將其里面的數(shù)據(jù)導(dǎo)入到excel表單
*
* @param sheetName 工作表的名稱
* @param title 標(biāo)題
* @return 結(jié)果
*/
public void importTemplateExcel(HttpServletResponse response, String sheetName, String title)
{
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
response.setCharacterEncoding("utf-8");
this.init(null, sheetName, title, Type.IMPORT);
exportExcel(response);
}
/**
* 對(duì)list數(shù)據(jù)源將其里面的數(shù)據(jù)導(dǎo)入到excel表單
*
* @return 結(jié)果
*/
public void exportExcel(HttpServletResponse response)
{
try
{
writeSheet();
wb.write(response.getOutputStream());
}
catch (Exception e)
{
log.error("導(dǎo)出Excel異常{}", e.getMessage());
}
finally
{
IOUtils.closeQuietly(wb);
}
}
/**
* 對(duì)list數(shù)據(jù)源將其里面的數(shù)據(jù)導(dǎo)入到excel表單
*
* @return 結(jié)果
*/
public AjaxResult exportExcel()
{
OutputStream out = null;
try
{
writeSheet();
String filename = encodingFilename(sheetName);
out = new FileOutputStream(getAbsoluteFile(filename));
wb.write(out);
return AjaxResult.success(filename);
}
catch (Exception e)
{
log.error("導(dǎo)出Excel異常{}", e.getMessage());
//throw new UtilException("導(dǎo)出Excel失敗，請(qǐng)聯(lián)系網(wǎng)站管理員！");
AjaxResult.success("導(dǎo)出Excel失敗，請(qǐng)聯(lián)系網(wǎng)站管理員！");
}
finally
{
IOUtils.closeQuietly(wb);
IOUtils.closeQuietly(out);
return AjaxResult.success("導(dǎo)出Excel失敗，請(qǐng)聯(lián)系網(wǎng)站管理員！");
}
}
/**
* 創(chuàng)建寫入數(shù)據(jù)到Sheet
*/
public void writeSheet()
{
// 取出一共有多少個(gè)sheet.
int sheetNo = Math.max(1, (int) Math.ceil(list.size() * 1.0 / sheetSize));
for (int index = 0; index < sheetNo; index++)
{
createSheet(sheetNo, index);
// 產(chǎn)生一行
Row row = sheet.createRow(rownum);
int column = 0;
// 寫入各個(gè)字段的列頭名稱
for (Object[] os : fields)
{
Excel excel = (Excel) os[1];
this.createCell(excel, row, column++);
}
if (Type.EXPORT.equals(type))
{
fillExcelData(index, row);
addStatisticsRow();
}
}
}
/**
* 填充excel數(shù)據(jù)
*
* @param index 序號(hào)
* @param row 單元格行
*/
public void fillExcelData(int index, Row row)
{
int startNo = index * sheetSize;
int endNo = Math.min(startNo + sheetSize, list.size());
for (int i = startNo; i < endNo; i++)
{
row = sheet.createRow(i + 1 + rownum - startNo);
// 得到導(dǎo)出對(duì)象.
T vo = (T) list.get(i);
int column = 0;
for (Object[] os : fields)
{
Field field = (Field) os[0];
Excel excel = (Excel) os[1];
this.addCell(excel, row, vo, field, column++);
}
}
}
/**
* 創(chuàng)建表格樣式
*
* @param wb 工作薄對(duì)象
* @return 樣式列表
*/
private Map<String, CellStyle> createStyles(Workbook wb)
{
// 寫入各條記錄,每條記錄對(duì)應(yīng)excel表中的一行
Map<String, CellStyle> styles = new HashMap<String, CellStyle>();
CellStyle style = wb.createCellStyle();
style.setAlignment(HorizontalAlignment.CENTER);
style.setVerticalAlignment(VerticalAlignment.CENTER);
Font titleFont = wb.createFont();
titleFont.setFontName("Arial");
titleFont.setFontHeightInPoints((short) 16);
titleFont.setBold(true);
style.setFont(titleFont);
styles.put("title", style);
style = wb.createCellStyle();
style.setAlignment(HorizontalAlignment.CENTER);
style.setVerticalAlignment(VerticalAlignment.CENTER);
style.setBorderRight(BorderStyle.THIN);
style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
style.setBorderLeft(BorderStyle.THIN);
style.setLeftBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
style.setBorderTop(BorderStyle.THIN);
style.setTopBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
style.setBorderBottom(BorderStyle.THIN);
style.setBottomBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
Font dataFont = wb.createFont();
dataFont.setFontName("Arial");
dataFont.setFontHeightInPoints((short) 10);
style.setFont(dataFont);
styles.put("data", style);
style = wb.createCellStyle();
style.setAlignment(HorizontalAlignment.CENTER);
style.setVerticalAlignment(VerticalAlignment.CENTER);
Font totalFont = wb.createFont();
totalFont.setFontName("Arial");
totalFont.setFontHeightInPoints((short) 10);
style.setFont(totalFont);
styles.put("total", style);
styles.putAll(annotationHeaderStyles(wb, styles));
styles.putAll(annotationDataStyles(wb));
return styles;
}
/**
* 根據(jù)Excel注解創(chuàng)建表格頭樣式
*
* @param wb 工作薄對(duì)象
* @return 自定義樣式列表
*/
private Map<String, CellStyle> annotationHeaderStyles(Workbook wb, Map<String, CellStyle> styles)
{
Map<String, CellStyle> headerStyles = new HashMap<String, CellStyle>();
for (Object[] os : fields)
{
Excel excel = (Excel) os[1];
String key = StringUtils.format("header_{}_{}", excel.headerColor(), excel.headerBackgroundColor());
if (!headerStyles.containsKey(key))
{
CellStyle style = wb.createCellStyle();
style = wb.createCellStyle();
style.cloneStyleFrom(styles.get("data"));
style.setAlignment(HorizontalAlignment.CENTER);
style.setVerticalAlignment(VerticalAlignment.CENTER);
style.setFillForegroundColor(excel.headerBackgroundColor().index);
style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
Font headerFont = wb.createFont();
headerFont.setFontName("Arial");
headerFont.setFontHeightInPoints((short) 10);
headerFont.setBold(true);
headerFont.setColor(excel.headerColor().index);
style.setFont(headerFont);
headerStyles.put(key, style);
}
}
return headerStyles;
}
/**
* 根據(jù)Excel注解創(chuàng)建表格列樣式
*
* @param wb 工作薄對(duì)象
* @return 自定義樣式列表
*/
private Map<String, CellStyle> annotationDataStyles(Workbook wb)
{
Map<String, CellStyle> styles = new HashMap<String, CellStyle>();
for (Object[] os : fields)
{
Excel excel = (Excel) os[1];
String key = StringUtils.format("data_{}_{}_{}", excel.align(), excel.color(), excel.backgroundColor());
if (!styles.containsKey(key))
{
CellStyle style = wb.createCellStyle();
style = wb.createCellStyle();
style.setAlignment(excel.align());
style.setVerticalAlignment(VerticalAlignment.CENTER);
style.setBorderRight(BorderStyle.THIN);
style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
style.setBorderLeft(BorderStyle.THIN);
style.setLeftBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
style.setBorderTop(BorderStyle.THIN);
style.setTopBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
style.setBorderBottom(BorderStyle.THIN);
style.setBottomBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
style.setFillForegroundColor(excel.backgroundColor().getIndex());
Font dataFont = wb.createFont();
dataFont.setFontName("Arial");
dataFont.setFontHeightInPoints((short) 10);
dataFont.setColor(excel.color().index);
style.setFont(dataFont);
styles.put(key, style);
}
}
return styles;
}
/**
* 創(chuàng)建單元格
*/
public Cell createCell(Excel attr, Row row, int column)
{
// 創(chuàng)建列
Cell cell = row.createCell(column);
// 寫入列信息
cell.setCellValue(attr.name());
setDataValidation(attr, row, column);
cell.setCellStyle(styles.get(StringUtils.format("header_{}_{}", attr.headerColor(), attr.headerBackgroundColor())));
return cell;
}
/**
* 設(shè)置單元格信息
*
* @param value 單元格值
* @param attr 注解相關(guān)
* @param cell 單元格信息
*/
public void setCellVo(Object value, Excel attr, Cell cell)
{
if (Excel.ColumnType.STRING == attr.cellType())
{
String cellValue = Convert.toStr(value);
// 對(duì)于任何以表達(dá)式觸發(fā)字符 =-+@開頭的單元格，直接使用tab字符作為前綴，防止CSV注入。
if (StringUtils.startsWithAny(cellValue, FORMULA_STR))
{
cellValue = RegExUtils.replaceFirst(cellValue, FORMULA_REGEX_STR, "\t$0");
}
cell.setCellValue(StringUtils.isNull(cellValue) ? attr.defaultValue() : cellValue + attr.suffix());
}
else if (Excel.ColumnType.NUMERIC == attr.cellType())
{
if (StringUtils.isNotNull(value))
{
cell.setCellValue(StringUtils.contains(Convert.toStr(value), ".") ? Convert.toDouble(value) : Convert.toInt(value));
}
}
/*else if (Excel.ColumnType.IMAGE == attr.cellType())
{
ClientAnchor anchor = new XSSFClientAnchor(0, 0, 0, 0, (short) cell.getColumnIndex(), cell.getRow().getRowNum(), (short) (cell.getColumnIndex() + 1), cell.getRow().getRowNum() + 1);
String imagePath = Convert.toStr(value);
if (StringUtils.isNotEmpty(imagePath))
{
byte[] data = ImageUtils.getImage(imagePath);
getDrawingPatriarch(cell.getSheet()).createPicture(anchor,
cell.getSheet().getWorkbook().addPicture(data, getImageType(data)));
}
}*/
}
/**
* 獲取畫布
*/
public static Drawing<?> getDrawingPatriarch(Sheet sheet)
{
if (sheet.getDrawingPatriarch() == null)
{
sheet.createDrawingPatriarch();
}
return sheet.getDrawingPatriarch();
}
/**
* 獲取圖片類型,設(shè)置圖片插入類型
*/
/*public int getImageType(byte[] value)
{
String type = FileTypeUtils.getFileExtendName(value);
if ("JPG".equalsIgnoreCase(type))
{
return Workbook.PICTURE_TYPE_JPEG;
}
else if ("PNG".equalsIgnoreCase(type))
{
return Workbook.PICTURE_TYPE_PNG;
}
return Workbook.PICTURE_TYPE_JPEG;
}*/
/**
* 創(chuàng)建表格樣式
*/
public void setDataValidation(Excel attr, Row row, int column)
{
if (attr.name().indexOf("注：") >= 0)
{
sheet.setColumnWidth(column, 6000);
}
else
{
// 設(shè)置列寬
sheet.setColumnWidth(column, (int) ((attr.width() + 0.72) * 256));
}
if (StringUtils.isNotEmpty(attr.prompt()) || attr.combo().length > 0)
{
// 提示信息或只能選擇不能輸入的列內(nèi)容.
setPromptOrValidation(sheet, attr.combo(), attr.prompt(), 1, 100, column, column);
}
}
/**
* 添加單元格
*/
public Cell addCell(Excel attr, Row row, T vo, Field field, int column)
{
Cell cell = null;
try
{
// 設(shè)置行高
row.setHeight(maxHeight);
// 根據(jù)Excel中設(shè)置情況決定是否導(dǎo)出,有些情況需要保持為空,希望用戶填寫這一列.
if (attr.isExport())
{
// 創(chuàng)建cell
cell = row.createCell(column);
cell.setCellStyle(styles.get(StringUtils.format("data_{}_{}_{}", attr.align(), attr.color(), attr.backgroundColor())));
// 用于讀取對(duì)象中的屬性
Object value = getTargetValue(vo, field, attr);
String dateFormat = attr.dateFormat();
String readConverterExp = attr.readConverterExp();
String separator = attr.separator();
String dictType = attr.dictType();
if (StringUtils.isNotEmpty(dateFormat) && StringUtils.isNotNull(value))
{
cell.setCellValue(parseDateToStr(dateFormat, value));
}
else if (StringUtils.isNotEmpty(readConverterExp) && StringUtils.isNotNull(value))
{
cell.setCellValue(convertByExp(Convert.toStr(value), readConverterExp, separator));
}
/*else if (StringUtils.isNotEmpty(dictType) && StringUtils.isNotNull(value))
{
cell.setCellValue(convertDictByExp(Convert.toStr(value), dictType, separator));
}*/
else if (value instanceof BigDecimal && -1 != attr.scale())
{
cell.setCellValue((((BigDecimal) value).setScale(attr.scale(), attr.roundingMode())).toString());
}
else if (!attr.handler().equals(ExcelHandlerAdapter.class))
{
cell.setCellValue(dataFormatHandlerAdapter(value, attr));
}
else
{
// 設(shè)置列類型
setCellVo(value, attr, cell);
}
addStatisticsData(column, Convert.toStr(value), attr);
}
}
catch (Exception e)
{
log.error("導(dǎo)出Excel失敗{}", e);
}
return cell;
}
/**
* 設(shè)置 POI XSSFSheet 單元格提示或選擇框
*
* @param sheet 表單
* @param textlist 下拉框顯示的內(nèi)容
* @param promptContent 提示內(nèi)容
* @param firstRow 開始行
* @param endRow 結(jié)束行
* @param firstCol 開始列
* @param endCol 結(jié)束列
*/
public void setPromptOrValidation(Sheet sheet, String[] textlist, String promptContent, int firstRow, int endRow,
int firstCol, int endCol)
{
DataValidationHelper helper = sheet.getDataValidationHelper();
DataValidationConstraint constraint = textlist.length > 0 ? helper.createExplicitListConstraint(textlist) : helper.createCustomConstraint("DD1");
CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
DataValidation dataValidation = helper.createValidation(constraint, regions);
if (StringUtils.isNotEmpty(promptContent))
{
// 如果設(shè)置了提示信息則鼠標(biāo)放上去提示
dataValidation.createPromptBox("", promptContent);
dataValidation.setShowPromptBox(true);
}
// 處理Excel兼容性問題
if (dataValidation instanceof XSSFDataValidation)
{
dataValidation.setSuppressDropDownArrow(true);
dataValidation.setShowErrorBox(true);
}
else
{
dataValidation.setSuppressDropDownArrow(false);
}
sheet.addValidationData(dataValidation);
}
/**
* 解析導(dǎo)出值 0=男,1=女,2=未知
*
* @param propertyValue 參數(shù)值
* @param converterExp 翻譯注解
* @param separator 分隔符
* @return 解析后值
*/
public static String convertByExp(String propertyValue, String converterExp, String separator)
{
StringBuilder propertyString = new StringBuilder();
String[] convertSource = converterExp.split(",");
for (String item : convertSource)
{
String[] itemArray = item.split("=");
if (StringUtils.containsAny(separator, propertyValue))
{
for (String value : propertyValue.split(separator))
{
if (itemArray[0].equals(value))
{
propertyString.append(itemArray[1] + separator);
break;
}
}
}
else
{
if (itemArray[0].equals(propertyValue))
{
return itemArray[1];
}
}
}
return StringUtils.stripEnd(propertyString.toString(), separator);
}
/**
* 反向解析值 男=0,女=1,未知=2
*
* @param propertyValue 參數(shù)值
* @param converterExp 翻譯注解
* @param separator 分隔符
* @return 解析后值
*/
public static String reverseByExp(String propertyValue, String converterExp, String separator)
{
StringBuilder propertyString = new StringBuilder();
String[] convertSource = converterExp.split(",");
for (String item : convertSource)
{
String[] itemArray = item.split("=");
if (StringUtils.containsAny(separator, propertyValue))
{
for (String value : propertyValue.split(separator))
{
if (itemArray[1].equals(value))
{
propertyString.append(itemArray[0] + separator);
break;
}
}
}
else
{
if (itemArray[1].equals(propertyValue))
{
return itemArray[0];
}
}
}
return StringUtils.stripEnd(propertyString.toString(), separator);
}
/**
* 解析字典值
*
* @param dictValue 字典值
* @param dictType 字典類型
* @param separator 分隔符
* @return 字典標(biāo)簽
*/
/*public static String convertDictByExp(String dictValue, String dictType, String separator)
{
return DictUtils.getDictLabel(dictType, dictValue, separator);
}*/
/**
* 反向解析值字典值
*
* @param dictLabel 字典標(biāo)簽
* @param dictType 字典類型
* @param separator 分隔符
* @return 字典值
*/
/*public static String reverseDictByExp(String dictLabel, String dictType, String separator)
{
return DictUtils.getDictValue(dictType, dictLabel, separator);
}*/
/**
* 數(shù)據(jù)處理器
*
* @param value 數(shù)據(jù)值
* @param excel 數(shù)據(jù)注解
* @return
*/
public String dataFormatHandlerAdapter(Object value, Excel excel)
{
try
{
Object instance = excel.handler().newInstance();
Method formatMethod = excel.handler().getMethod("format", new Class[] { Object.class, String[].class });
value = formatMethod.invoke(instance, value, excel.args());
}
catch (Exception e)
{
log.error("不能格式化數(shù)據(jù) " + excel.handler(), e.getMessage());
}
return Convert.toStr(value);
}
/**
* 合計(jì)統(tǒng)計(jì)信息
*/
private void addStatisticsData(Integer index, String text, Excel entity)
{
if (entity != null && entity.isStatistics())
{
Double temp = 0D;
if (!statistics.containsKey(index))
{
statistics.put(index, temp);
}
try
{
temp = Double.valueOf(text);
}
catch (NumberFormatException e)
{
}
statistics.put(index, statistics.get(index) + temp);
}
}
/**
* 創(chuàng)建統(tǒng)計(jì)行
*/
public void addStatisticsRow()
{
if (statistics.size() > 0)
{
Row row = sheet.createRow(sheet.getLastRowNum() + 1);
Set<Integer> keys = statistics.keySet();
Cell cell = row.createCell(0);
cell.setCellStyle(styles.get("total"));
cell.setCellValue("合計(jì)");
for (Integer key : keys)
{
cell = row.createCell(key);
cell.setCellStyle(styles.get("total"));
cell.setCellValue(DOUBLE_FORMAT.format(statistics.get(key)));
}
statistics.clear();
}
}
/**
* 編碼文件名
*/
public String encodingFilename(String filename)
{
filename = UUID.randomUUID().toString() + "_" + filename + ".xlsx";
return filename;
}
/**
* 獲取下載路徑
*
* @param filename 文件名稱
*/
public String getAbsoluteFile(String filename)
{
String downloadPath ="";
File desc = new File(downloadPath);
if (!desc.getParentFile().exists())
{
desc.getParentFile().mkdirs();
}
return downloadPath;
}
/**
* 獲取bean中的屬性值
*
* @param vo 實(shí)體對(duì)象
* @param field 字段
* @param excel 注解
* @return 最終的屬性值
* @throws Exception
*/
private Object getTargetValue(T vo, Field field, Excel excel) throws Exception
{
Object o = field.get(vo);
if (StringUtils.isNotEmpty(excel.targetAttr()))
{
String target = excel.targetAttr();
if (target.contains("."))
{
String[] targets = target.split("[.]");
for (String name : targets)
{
o = getValue(o, name);
}
}
else
{
o = getValue(o, target);
}
}
return o;
}
/**
* 以類的屬性的get方法方法形式獲取值
*
* @param o
* @param name
* @return value
* @throws Exception
*/
private Object getValue(Object o, String name) throws Exception
{
if (StringUtils.isNotNull(o) && StringUtils.isNotEmpty(name))
{
Class<?> clazz = o.getClass();
Field field = clazz.getDeclaredField(name);
field.setAccessible(true);
o = field.get(o);
}
return o;
}
/**
* 得到所有定義字段
*/
private void createExcelField()
{
this.fields = getFields();
this.fields = this.fields.stream().sorted(Comparator.comparing(objects -> ((Excel) objects[1]).sort())).collect(Collectors.toList());
this.maxHeight = getRowHeight();
}
/**
* 獲取字段注解信息
*/
public List<Object[]> getFields()
{
List<Object[]> fields = new ArrayList<Object[]>();
List<Field> tempFields = new ArrayList<>();
tempFields.addAll(Arrays.asList(clazz.getSuperclass().getDeclaredFields()));
tempFields.addAll(Arrays.asList(clazz.getDeclaredFields()));
for (Field field : tempFields)
{
if (!ArrayUtils.contains(this.excludeFields, field.getName()))
{
// 單注解
if (field.isAnnotationPresent(Excel.class))
{
Excel attr = field.getAnnotation(Excel.class);
if (attr != null && (attr.type() == Type.ALL || attr.type() == type))
{
field.setAccessible(true);
fields.add(new Object[] { field, attr });
}
}
// 多注解
if (field.isAnnotationPresent(Excels.class))
{
Excels attrs = field.getAnnotation(Excels.class);
Excel[] excels = attrs.value();
for (Excel attr : excels)
{
if (attr != null && (attr.type() == Type.ALL || attr.type() == type))
{
field.setAccessible(true);
fields.add(new Object[] { field, attr });
}
}
}
}
}
return fields;
}
/**
* 根據(jù)注解獲取最大行高
*/
public short getRowHeight()
{
double maxHeight = 0;
for (Object[] os : this.fields)
{
Excel excel = (Excel) os[1];
maxHeight = Math.max(maxHeight, excel.height());
}
return (short) (maxHeight * 20);
}
/**
* 創(chuàng)建一個(gè)工作簿
*/
public void createWorkbook()
{
this.wb = new SXSSFWorkbook(500);
this.sheet = wb.createSheet();
wb.setSheetName(0, sheetName);
this.styles = createStyles(wb);
}
/**
* 創(chuàng)建工作表
*
* @param sheetNo sheet數(shù)量
* @param index 序號(hào)
*/
public void createSheet(int sheetNo, int index)
{
// 設(shè)置工作表的名稱.
if (sheetNo > 1 && index > 0)
{
this.sheet = wb.createSheet();
this.createTitle();
wb.setSheetName(index, sheetName + index);
}
}
/**
* 獲取單元格值
*
* @param row 獲取的行
* @param column 獲取單元格列號(hào)
* @return 單元格值
*/
public Object getCellValue(Row row, int column)
{
if (row == null)
{
return row;
}
Object val = "";
try
{
Cell cell = row.getCell(column);
if (StringUtils.isNotNull(cell))
{
if (cell.getCellType() == CellType.NUMERIC || cell.getCellType() == CellType.FORMULA)
{
val = cell.getNumericCellValue();
if (DateUtil.isCellDateFormatted(cell))
{
val = DateUtil.getJavaDate((Double) val); // POI Excel 日期格式轉(zhuǎn)換
}
else
{
if ((Double) val % 1 != 0)
{
val = new BigDecimal(val.toString());
}
else
{
val = new DecimalFormat("0").format(val);
}
}
}
else if (cell.getCellType() == CellType.STRING)
{
val = cell.getStringCellValue();
}
else if (cell.getCellType() == CellType.BOOLEAN)
{
val = cell.getBooleanCellValue();
}
else if (cell.getCellType() == CellType.ERROR)
{
val = cell.getErrorCellValue();
}
}
}
catch (Exception e)
{
return val;
}
return val;
}
/**
* 判斷是否是空行
*
* @param row 判斷的行
* @return
*/
private boolean isRowEmpty(Row row)
{
if (row == null)
{
return true;
}
for (int i = row.getFirstCellNum(); i < row.getLastCellNum(); i++)
{
Cell cell = row.getCell(i);
if (cell != null && cell.getCellType() != CellType.BLANK)
{
return false;
}
}
return true;
}
/**
* 獲取Excel2003圖片
*
* @param sheet 當(dāng)前sheet對(duì)象
* @param workbook 工作簿對(duì)象
* @return Map key:圖片單元格索引（1_1）String，value:圖片流PictureData
*/
public static Map<String, PictureData> getSheetPictures03(HSSFSheet sheet, HSSFWorkbook workbook)
{
Map<String, PictureData> sheetIndexPicMap = new HashMap<String, PictureData>();
List<HSSFPictureData> pictures = workbook.getAllPictures();
if (!pictures.isEmpty())
{
for (HSSFShape shape : sheet.getDrawingPatriarch().getChildren())
{
HSSFClientAnchor anchor = (HSSFClientAnchor) shape.getAnchor();
if (shape instanceof HSSFPicture)
{
HSSFPicture pic = (HSSFPicture) shape;
int pictureIndex = pic.getPictureIndex() - 1;
HSSFPictureData picData = pictures.get(pictureIndex);
String picIndex = String.valueOf(anchor.getRow1()) + "_" + String.valueOf(anchor.getCol1());
sheetIndexPicMap.put(picIndex, picData);
}
}
return sheetIndexPicMap;
}
else
{
return sheetIndexPicMap;
}
}
/**
* 獲取Excel2007圖片
*
* @param sheet 當(dāng)前sheet對(duì)象
* @param workbook 工作簿對(duì)象
* @return Map key:圖片單元格索引（1_1）String，value:圖片流PictureData
*/
public static Map<String, PictureData> getSheetPictures07(XSSFSheet sheet, XSSFWorkbook workbook)
{
Map<String, PictureData> sheetIndexPicMap = new HashMap<String, PictureData>();
for (POIXMLDocumentPart dr : sheet.getRelations())
{
if (dr instanceof XSSFDrawing)
{
XSSFDrawing drawing = (XSSFDrawing) dr;
List<XSSFShape> shapes = drawing.getShapes();
for (XSSFShape shape : shapes)
{
if (shape instanceof XSSFPicture)
{
XSSFPicture pic = (XSSFPicture) shape;
XSSFClientAnchor anchor = pic.getPreferredSize();
CTMarker ctMarker = anchor.getFrom();
String picIndex = ctMarker.getRow() + "_" + ctMarker.getCol();
sheetIndexPicMap.put(picIndex, pic.getPictureData());
}
}
}
}
return sheetIndexPicMap;
}
/**
* 格式化不同類型的日期對(duì)象
*
* @param dateFormat 日期格式
* @param val 被格式化的日期對(duì)象
* @return 格式化后的日期字符
*/
public String parseDateToStr(String dateFormat, Object val)
{
if (val == null)
{
return "";
}
String str;
if (val instanceof Date)
{
str = DateUtils.parseDateToStr(dateFormat, (Date) val);
}
else if (val instanceof LocalDateTime)
{
str = DateUtils.parseDateToStr(dateFormat, DateUtils.toDate((LocalDateTime) val));
}
else if (val instanceof LocalDate)
{
str = DateUtils.parseDateToStr(dateFormat, DateUtils.toDate((LocalDate) val));
}
else
{
str = val.toString();
}
return str;
}
}本來想多上傳幾個(gè)工具類和枚舉類，但是csdn這個(gè)編輯文字一多就卡住了，只能先寫這里，剩下的枚舉后面有機(jī)會(huì)繼續(xù)上傳，大家有需要可以私信博主
到此這篇關(guān)于Springboot獲取文件內(nèi)容，將MultipartFile轉(zhuǎn)File方法的文章就介紹到這了,更多相關(guān)Springboot MultipartFile轉(zhuǎn)File內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！
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