java程序上傳excel文件，保存數據到數據庫中

前端代碼：

<!--導入數據開始-->
<div class='container-fluid' style="color: white;">
    <div class='row-fluid' id='content-wrapper' style="display: block;">
        <div class="modal-add hide fade in" id="modal-addsubject" role="dialog" aria-hidden="false" style="display:none;height:20%;">
            <div class="modal-header" style="border-bottom:0;">
                <button class="close" data-dismiss="modal" type="button" style="color:white;opacity:1;">×</button>
                <h3 style="color: white;"><div class="icon-edit"></div> 導入數據</h3>
            </div>
            <div class="modal-body" id="add_modify_subject">
                <form id='upload' enctype='multipart/form-data' action='' method='post' style='text-align:left;'>
                    <input name="fileBuildInfo1" id='fileBuildInfo1' class='big' type='file' mutiple="multiple" />
                </form>
            </div>
            <div class="modal-footer" style="border-top:0;box-shadow:none;-webkit-box-shadow:none;">
                <button class="btn btn-primary" style="background-color:#09abeb;border-style:solid;border-width:0.2px;border-color:#7cf8ff;" onclick="uploadFile()"><i class="icon-save"></i> 保存</button>
            </div>
        </div>
    </div>
</div>
<!--導入數據結束-->

js方法：

//上傳excel數據文件
function uploadFile(){
    $('#upload').ajaxSubmit({
        url: "/UploadFiles/uploadexcelfile",
        data: {
            'filetype': "excel表格",
            'type':case_type
        },
        cache: false,
        dataType: 'json',
        success: function(data) {
            if (data.result == "success") {
                layer.msg('上傳成功！', {
                    icon: 1
                });
            } else {
                layer.msg('上傳失敗！', {
                    icon: 2
                });
            }
        },
        error: function() {
            layer.msg('錯誤！', {
                icon: 2
            });
        }
    });
    if(case_type=="ms"){
        select_btn(1);
    }else if(case_type=="xs"){
        select_btn(2);
    }else{
        select_btn(3);
    }
    $("#modal-addsubject").modal("hide");
}

后台代碼：

package controllers;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.io.FilenameUtils;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellValue;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
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 models.ResultInfo;
import play.Play;
import play.data.Upload;
import play.libs.Files;

/**
 * @author 32  * @date 2018年6月7日 上午9:01:52
 * @Description
 */
public class UploadFiles extends BaseController {

    // Excel 2003
    private final static String XLS = "xls";
    // Excel 2007
    private final static String XLSX = "xlsx";
    // 分隔符
    private final static String SEPARATOR = "|";

    static String projectpath = Play.applicationPath.getPath().toString();
    static String path = projectpath + "\\public\\Filebakup\\excelfile\\";
    static int pagesize = 15;
    static int errcount = 0;
    static String rownum = "";

    // 上傳excel數據
    public static void uploadexcelfile(String type, String filetype)
            throws IOException {
        List<Upload> files = null;
        errcount = 0;
        rownum = "";
        while (true) {
            files = (List<Upload>) request.args.get("__UPLOADS");
            if (files != null) {
                break;
            }
        }
        List<String> filepaths = new ArrayList<String>();
        int sign = 0;
        for (Upload upload : files) {
            if (upload.getSize() > 0) {
                File f = upload.asFile();
                String fileName = f.getName();
                File storeFile = new File(path + fileName);
                String allpath = path + fileName;
                filepaths.add(allpath);
                Files.copy(f, storeFile);
                List<String> list = null;
                list = exportListFromExcel(new File(allpath), 0, type);
                if (list.size() > 0) {
                    sign += 1;
                }
            }
        }
        ResultInfo result = new ResultInfo();
        if (sign > 0) {
            renderJSON(result.success("success", refreshExpire()));
        } else {
            renderJSON(result.error("error", refreshExpire()));
        }
    }

    public static List<String> exportListFromExcel(File file, int sheetNum,
            String type) throws IOException {
        return exportListFromExcel(new FileInputStream(file),
                FilenameUtils.getExtension(file.getName()), sheetNum, type);
    }

    public static List<String> exportListFromExcel(InputStream is,
            String extensionName, int sheetNum, String type) throws IOException {
        Workbook workbook = null;
        if (extensionName.toLowerCase().equals(XLS)) {
            workbook = new HSSFWorkbook(is);
        } else if (extensionName.toLowerCase().equals(XLSX)) {
            workbook = new XSSFWorkbook(is);
        }
        return exportListFromExcel(workbook, sheetNum, type);
    }

    private static List<String> exportListFromExcel(Workbook workbook,
            int sheetNum, String type) {
        Date uploadtime = new Date();
        Sheet sheet = workbook.getSheetAt(sheetNum);
        // 解析公式結果
        FormulaEvaluator evaluator = workbook.getCreationHelper()
                .createFormulaEvaluator();
        List<String> list = new ArrayList<String>();
        int minRowIx = sheet.getFirstRowNum() + 1;
        if (!"".equals(type) && type != null && type.equals("qlqd")) {
            minRowIx = minRowIx + 1;
        }
        int maxRowIx = sheet.getLastRowNum();
        for (int rowIx = minRowIx; rowIx <= maxRowIx; rowIx++) {
            Row row = sheet.getRow(rowIx);
            int mnnumber = rowIx - 1;
            String mnnbs = "";
            if (mnnumber < 10) {
                mnnbs = "000" + mnnumber;
            } else if (mnnumber >= 10 && mnnumber < 100) {
                mnnbs = "00" + mnnumber;
            } else if (mnnumber >= 100 && mnnumber < 1000) {
                mnnbs = "0" + mnnumber;
            } else if (mnnumber >= 1000) {
                mnnbs = "" + mnnumber;
            }
            StringBuilder sb = new StringBuilder();
            short minColIx = (short) (row.getFirstCellNum());
            short maxColIx = row.getLastCellNum();
            for (short colIx = minColIx; colIx <= maxColIx; colIx++) {
                Cell cell = row.getCell(new Integer(colIx));
                CellValue cellValue = evaluator.evaluate(cell);
                String cellstr = "";
                if (cellValue == null) {
                    sb.append(SEPARATOR + " ");
                    continue;
                }
                // 經過公式解析，最后只存在Boolean、Numeric和String三種數據類型，此外就是Error了
                // 其余數據類型，根據官方文檔，完全可以忽略http://poi.apache.org/spreadsheet/eval.html
                switch (cellValue.getCellType()) {
                case Cell.CELL_TYPE_BOOLEAN:
                    sb.append(SEPARATOR + cellValue.getBooleanValue());
                    break;
                case Cell.CELL_TYPE_NUMERIC:
                    // 這里的日期類型會被轉換為數字類型，需要判別后區分處理
                    if (DateUtil.isCellDateFormatted(cell)) {
                        sb.append(SEPARATOR
                                + util.DateUtil.date2String(cell
                                        .getDateCellValue()));
                    } else {
                        sb.append(SEPARATOR + new DecimalFormat("#").format(cellValue.getNumberValue()));
                    }
                    break;
                case Cell.CELL_TYPE_STRING:
                    sb.append(SEPARATOR + cellValue.getStringValue());
                    break;
                case Cell.CELL_TYPE_FORMULA:
                    break;
                case Cell.CELL_TYPE_BLANK:
                    break;
                case Cell.CELL_TYPE_ERROR:
                    break;
                default:
                    break;
                }
            }
            if (!sb.toString()
                    .trim()
                    .equals("| | | | | | | | | | | | | | | | | | | | | | | | | | | |")) {
                if (!"".equals(type) && type != null && type.equals("ms")) {
                    MSCaseInfoController.addmscase(sb.toString(), uploadtime);
                } else if (!"".equals(type) && type != null
                        && type.equals("xs")) {
                    XSCaseInfoController.addxscase(sb.toString(), uploadtime);
                } else if (!"".equals(type) && type != null
                        && type.equals("ks")) {
                    KSCaseInfoController.addkscase("部門受案號", sb.toString(),
                            uploadtime);
                } else {
                    PowerListController.addPowerList(sb.toString());
                }
            }
            list.add(sb.toString());
        }
        return list;
    }

}