java自定义模板导出excel

excel模板先设置批注（就是对应一个list在excel中  循环取值）

html页面（简单块）

    
       导出
     


余额汇总表

js代码（涉及重点）

function excelExportAll() {

    //类型选中得值
    var selectVal = $('#code').val();
    //关键字
    var sq = $("#sqSearch").val();
    var end = $("#endPicker").val();
    window.location.href = BaseUtil.getCxtPath() + "/flow/export?code=" + selectVal + "&sq=" + sq + "&end=" + end;

}

ChangePage.prototype.init = function () {
        $('.change_infor').click(function () {
            $('#exporta').show();
            $('.rjz_wrepper').show();
            $('.change_infor').css({'background': '#2d7ec4'})
        })
    }
    new ChangePage();

后台Java代码

@RequestMapping(value = "/export")
    public void export(String code, String sq, String end, HttpServletRequest request, HttpServletResponse response) {
        log.info("Parameter---{}---{}---Method---export", code, sq);
        User currentUser = LoginUtil.getCurrentUser(request);
        String currentUserName = currentUser.getUserLoginName();

        CompanyVo companyVo = rpcCompanyService.get(sq);
        String sign = "";
        List authCodeList = new ArrayList<>();
        SignVo codeAuthList = this.getCodeAuthList(request);
        if(!ObjectUtils.isEmpty(codeAuthList)) {
            sign = codeAuthList.getSign();
            authCodeList = codeAuthList.getAuthCodeList();
        }
        List>  excelInfoList = this.rpcFlowService.buildExcelInfo(currentUserName, end, sq, code, authCodeList, sign);

        Map map1 = new HashMap<>();
        map1.put("sq", companyVo.getPlazaShortName());
        try {
            String path = GetResource.class.getClassLoader().getResource("excel/uplist/bD.xls").getPath();
            JxlsUtils.exportExcel(path, "余额汇总表统计.xls",excelInfoList, map1, response, request);
        } catch (ExcelException e) {
            e.printStackTrace();
        }
    }

JxlsUtils工具类中方法

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;

import org.jxls.common.Context;
import org.jxls.expression.JexlExpressionEvaluator;
import org.jxls.transform.Transformer;
import org.jxls.util.JxlsHelper;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;

import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.*;

@Slf4j
public class JxlsUtils {


/**
     * 

     * 自定义excel模板导出excel-浏览器导出

     * 
     * 

     *
     * @param templateExcelURL
     *            excel模板路径(包含至excel文件名)
     * @param customeExcelName
     *            自定义导出的excel文件名称(默认名称:Excel+年月日时分秒)
     * @param list
     *            导出数据的List>, 不批量导出时可传入null,excel中取值遍历示例:
     *            jx:each(items="list" var = "temp" lastCell = "H12")->H12是指A12-H12行往下遍历
     *            jx:area(lastCell="H13")->H13是指表格范围A1-H13
     * @param param
     *            导出数据的Map,可传入null,
     *            excel中取值时示例(${param.参数名称}):${param.name}
     * @param response
     *            HttpServletResponse
     * @throws ExcelException
     *             自定义异常,成功无返回,无异常 void,失败异常返回错误原因(e.getMessage())
     * 
     */
    public static void exportExcel(String templateExcelURL, String customeExcelName,List> list, Map param,
                                   HttpServletResponse response, HttpServletRequest request) throws ExcelException {
        if (StringUtils.isBlank(templateExcelURL)) {
            throw new ExcelException("Excel模板URL不能为空");
        }

        File file = new File(templateExcelURL);

        if (file.isDirectory()) {
            throw new ExcelException("Excel导出模板路径需包含模板文件名称");
        }

        if (!file.exists()) {
            throw new ExcelException("Excel导出模板文件不存在,请联系管理人员添加模板");
        }

        if (StringUtils.isBlank(customeExcelName)) {
            try {
                SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmmss");
                customeExcelName = "Excel" + simpleDateFormat.format(new Date()) + ".xls";
            } catch (Exception e) {
                throw new ExcelException("Excel新建默认名称日期转换异常,请重试");
            }
        } else {
            if (!customeExcelName.contains(".xls")) {
                customeExcelName += ".xls";
            }
        }


        Context context = new Context();
        context.putVar("list", list);
        context.putVar("param", param);

        InputStream inputStream = null;
        OutputStream outputStream = null;
        log.info("***************导入Excel模板开始***************");
        try {
        	String header = request.getHeader("User-Agent").toUpperCase();
            if (header.contains("MSIE") || header.contains("TRIDENT") || header.contains("EDGE")) {
            	customeExcelName = URLEncoder.encode(customeExcelName, "utf-8");
            	customeExcelName = customeExcelName.replace("+", "%20");    //IE下载文件名空格变+号问题
            } else {
            	customeExcelName = new String(customeExcelName.getBytes("utf-8"), "ISO8859-1"); 
            }
        	
            // 设置响应
            response.setHeader("Content-Disposition", "attachment;filename=\""
                    + customeExcelName + "\"");
            response.setContentType("application/vnd.ms-excel");

            //将模板放在项目中
            //InputStream in = ExportExcel.class.getResourceAsStream("/template/" + templateName);
            inputStream = new BufferedInputStream(new FileInputStream(templateExcelURL));
            outputStream = response.getOutputStream();
            JxlsHelper jxlsHelper = JxlsHelper.getInstance();
            Transformer transformer  = jxlsHelper.createTransformer(inputStream, outputStream);

            /*-------------------- 给模板添加自定义功能 ----------------------------*/
            JexlExpressionEvaluator evaluator = (JexlExpressionEvaluator)transformer.getTransformationConfig().getExpressionEvaluator();
            Map funcs = new HashMap();
            //eg：${utils:dateFmt(date,"yyyy-MM-dd")}-格式化日期
            funcs.put("utils", new JxlsUtils());
            evaluator.getJexlEngine().setFunctions(funcs);

            jxlsHelper.processTemplate(context, transformer);
            outputStream.flush();
        } catch (Exception e) {
            e.printStackTrace();
            throw new ExcelException("Excel导出异常,请重试");
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    throw new ExcelException("Excel导出异常,inputStream.close异常");
                }
            }
            if (outputStream != null) {
                try {
                    outputStream.close();
                } catch (IOException e) {
                    throw new ExcelException("Excel导出异常,outputStream.close异常");
                }
            }
        }
    }
}

模板导出功能记录（zijin）