java导出服务器已经配置好的excel模板

采用springboot的项目架构。

目录结构

 

1. 前台代码（设置一个按钮）

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>导出excel模板</title>
    <script th:src="@{|/js/jquery-2.1.4.min.js|}"></script>
    <script>
        $(function () {

            $("#exportExcelModel").bind("click",function () {
                window.location.href = "/exportExcelModel";
            })

        })
    </script>
</head>
<body>
    <button id="exportExcelModel">导出excel模板</button>
</body>
</html>

2. 后台代码

package com.bjpowernode.excel.exportExcelModel.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

/**
 * ClassName:ExportExcelModelController
 * Package:com.bjpowernode.excel.exportExcelModel.controller
 * Description:
 *
 * @Date:2019/2/23 15:21
 * @Author: 郑军
 */
@Controller
public class ExportExcelModelController {

    @RequestMapping("/toExportExcelModel")
    public String toExportExcelModel() {
        return "exportExcelModel";
    }

    @RequestMapping("/exportExcelModel")
    public void exportExcelModel(HttpServletRequest request,
                                 HttpServletResponse response) {
        // 模板名称
        String fileName = "失信.xlsx";
        String excelName = "失信";

        InputStream inputStream = null;
        OutputStream outputStream = null;

        try {

            /**
             * 设置excel文件导出的时候，浏览器响应头
             */
            response.setContentType("application/vnd.ms-excel;charset=UTF-8");
            response.setHeader("Content-disposition", "attachment;fileName=" + new String(excelName.getBytes("utf-8"), "iso-8859-1") + ".xlsx");

            // 读取服务器中配置好的excel模板
            inputStream = ExportExcelModelController.class.getClassLoader().
                    getResourceAsStream(fileName);

            /**
             * 读取excel中的数据，然后通过outputStream输出流输出
             */
            outputStream = response.getOutputStream();
            byte[] bytes = new byte[1024];
            int length = inputStream.read(bytes);
            while (length > 0) {
                outputStream.write(bytes, 0, length);
                length = inputStream.read(bytes);
            }

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

            if (outputStream != null) {
                try {
                    outputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

    }


}

 

posted @ 2019-02-23 16:37  Java半路人生  阅读(1594)  评论(0)  编辑  收藏  举报