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Java spring mvc jsp excel 導入
pom文件添加
<!-- poi jar 解析excel -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.12</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
artifactId>commons-fileupload</artifactId>
</dependency>
spring配置
<!-- 文件上傳表單的視圖解析器 -->
<bean
>
</bean>
jsp頁麵代碼
<button name="importBtn" type="button"><i ></i> 批量導入</button>
......
<!-- excel上傳 -->
<form method="post" enctype="multipart/form-data">
<input type="file" name="uploadFile" />
</form>
js代碼
$(".addExcelBtn").unbind('click');
$(".addExcelBtn").click(function() {
$(".import").unbind('click');
$(".import").click(function() {
$('input[type="file"][name="uploadFile"]').click();
});
$('input[type="file"]').unbind("change");
$('input[type="file"]').change(function () {
uploadFile();
$('input[type="file"][name="uploadFile"]').val("");
});
});
function uploadFile() {
var fileName = $('input[type="file"][name="uploadFile"]').val();
if (fileName === '') {
frameModal.hitModal("請選擇文件");
return;
}
var fileType = (fileName.substring(fileName
.lastIndexOf(".") + 1, fileName.length))
.toLowerCase();
if (fileType !== 'xls' && fileType !== 'xlsx') {
frameModal.hitModal("文件格式不正確，excel文件！");
return;
}
$(".fileForm").ajaxSubmit({
dataType : "json",
data: {'1': 1},
type: "POST",
url: 'url',
success : function(data, textStatus) {
console.log(data);
},
error: function () {
frameModal.hitModal('操作失敗');
}
});
};
controller代碼
@RequestMapping(value = "/uploadExcel.action", method = RequestMethod.POST)
@ResponseBody
public ResponseVo uploadExcel(HttpServletRequest request) {
// 創建一個通用的多部分解析器
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(
request.getSession().getServletContext());
// 判斷 request 是否有文件上傳,即多部分請求
if (multipartResolver.isMultipart(request)) {
// 轉換成多部分request
MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;
MultipartFile file = multiRequest.getFile("uploadFile");
try {
//excelUtil工具類
List<String[]> res = ExcelUtil.readExcel(file);
if (res != null && res.size() > 0) {
//存庫或者其他處理邏輯
}
} catch (IOException e) {
}
}
return null;
}
excelUtil工具類
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.List;
import org.apache.log4j.Logger;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.multipart.MultipartFile;
/**
* @ClassName: ExcelUtil
* @Description: Excel導入導出工具類
*/
public class ExcelUtil {
private static Logger logger = Logger.getLogger(ExcelUtil.class);
private final static String xls = "xls";
private final static String xlsx = "xlsx";
/**
* 讀入excel文件，解析後返回
* @param file
* @throws IOException
*/
public static List<String[]> readExcel(MultipartFile file) throws IOException{
//檢查文件
checkFile(file);
//獲得Workbook工作薄對象
Workbook workbook = getWorkBook(file);
//創建返回對象，把每行中的值作為一個數組，所有行作為一個集合返回
List<String[]> list = new ArrayList<String[]>();
if(workbook != null){
for(int sheetNum = 0;sheetNum < workbook.getNumberOfSheets();sheetNum++){
//獲得當前sheet工作表
Sheet sheet = workbook.getSheetAt(sheetNum);
if(sheet == null){
continue;
}
//獲得當前sheet的開始行
int firstRowNum = sheet.getFirstRowNum();
//獲得當前sheet的結束行
int lastRowNum = sheet.getLastRowNum();
//循環除了第一行的所有行
//for(int rowNum = firstRowNum+1;rowNum <= lastRowNum;rowNum++){
int firstColumn = 0;
for(int rowNum = firstRowNum;rowNum <= lastRowNum;rowNum++){
//獲得當前行
Row row = sheet.getRow(rowNum);
if(row == null){
continue;
}
//獲得當前行的開始列
//int firstCellNum = row.getFirstCellNum();
int firstCellNum = 0;
//獲得當前行的列數
int lastCellNum = row.getPhysicalNumberOfCells();
if (rowNum == firstRowNum) {
firstColumn = lastCellNum;
}
String[] cells = new String[firstColumn];
//循環當前行
for(int cellNum = firstCellNum; cellNum < firstColumn;cellNum++){
Cell cell = row.getCell(cellNum);
cells[cellNum] = getCellValue(cell);
}
list.add(cells);
}
}
workbook.close();
}
return list;
}
public static void checkFile(MultipartFile file) throws IOException{
//判斷文件是否存在
if(null == file){
logger.error("文件不存在！");
throw new FileNotFoundException("文件不存在！");
}
//獲得文件名
String fileName = file.getOriginalFilename();
//判斷文件是否是excel文件
if(!fileName.endsWith(xls) && !fileName.endsWith(xlsx)){
logger.error(fileName + "不是excel文件");
throw new IOException(fileName + "不是excel文件");
}
}
public static Workbook getWorkBook(MultipartFile file) {
//獲得文件名
String fileName = file.getOriginalFilename();
//創建Workbook工作薄對象，表示整個excel
Workbook workbook = null;
try {
//獲取excel文件的io流
InputStream is = file.getInputStream();
//根據文件後綴名不同(xls和xlsx)獲得不同的Workbook實現類對象
if(fileName.endsWith(xls)){
//2003
workbook = new HSSFWorkbook(is);
}else if(fileName.endsWith(xlsx)){
//2007
workbook = new XSSFWorkbook(is);
}
} catch (IOException e) {
logger.info(e.getMessage());
}
return workbook;
}
public static String getCellValue(Cell cell){
DecimalFormat df = new DecimalFormat("#");
String cellValue = "";
if(cell == null){
return "";
}
//把數字當成String來讀，避免出現1讀成1.0的情況
if(cell.getCellType() == Cell.CELL_TYPE_NUMERIC){
cell.setCellType(Cell.CELL_TYPE_STRING);
}
//判斷數據的類型
switch (cell.getCellType()){
case Cell.CELL_TYPE_NUMERIC: //數字
//cellValue = String.valueOf(cell.getNumericCellValue());
//double c = cell.getNumericCellValue();
//cellValue = df.format(c);
//BigDecimal big = new BigDecimal(cell.getNumericCellValue());
double c = cell.getNumericCellValue();
cellValue = df.format(c);
break;
case Cell.CELL_TYPE_STRING: //字符串
//cellValue = String.valueOf(cell.getStringCellValue());
cellValue = cell.getStringCellValue().toString();
break;
case Cell.CELL_TYPE_BOOLEAN: //Boolean
cellValue = String.valueOf(cell.getBooleanCellValue());
break;
case Cell.CELL_TYPE_FORMULA: //公式
cellValue = String.valueOf(cell.getCellFormula());
break;
case Cell.CELL_TYPE_BLANK: //空值
cellValue = "";
break;
case Cell.CELL_TYPE_ERROR: //故障
cellValue = "非法字符";
break;
default:
cellValue = "未知類型";
break;
}
return cellValue;
}
}
注意：
1.excel中如果有長數字如果在getCellValue時不把類型轉換為字符串類型，可能會導致數字損失精度
2.工具類原方法中解析excel是根據每行中的列數去獲取，修改了工具類，如果列獲取不到數值，就返回空。
最後更新：2017-07-26 11:33:25
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