Java 利用poi 导出excel表格 如何在导出时自由选择路径?

Question

能导出成功，知识代码把路径写死了，想要实现自己选择保存路径。

Answer 1

导出时自由选择路径的代码如下：

1、后台输出Excel文件代码：

OutputStream output = response.getOutputStream();

response.reset();

response.setHeader("Content-disposition", "attachment; filename=" + path);

response.setContentType("Content-Type:application/vnd.ms-excel ");

wb.write(output);

output.close();

2、前端代码：

window.open("getExcelList","_blank");

导出excel数据

* @param id

* @param m

* @return

*/

@RequestMapping("/exportExcel")

public void exportExcel(@RequestParam("id") Integer id, Model m,HttpServletRequest req, HttpServletResponse resp) {

try {

ExportExcel<P2pLoanPlanVo> ex = new ExportExcel<P2pLoanPlanVo>();

String[] headers = {"最迟还款日", "还款金额","剩余几天","逾期几天", "罚息","是否垫付","状态","是否发放收益"};

List<P2pLoanPlanVo> dataset = new ArrayList<P2pLoanPlanVo>();

List<P2pLoanPlan> plans = this.planService.getListByLoan(id);

for (int i = 0; i < plans.size(); i++) {

P2pLoanPlanVo p2pLoanPlanVo = new P2pLoanPlanVo();

p2pLoanPlanVo.setRepayDate(plans.get(i).getRepayDate());

p2pLoanPlanVo.setRepayAmount(plans.get(i).getRepayAmount());

if(plans.get(i).getRepayDays() >= 0 && plans.get(i).getStatus() == 0){

p2pLoanPlanVo.setRepayDays(plans.get(i).getRepayDays());

}else{

p2pLoanPlanVo.setRepayDays(0);

}

if(plans.get(i).getRepayDays() < 0 && plans.get(i).getStatus() == 0){

p2pLoanPlanVo.setRepayYqDays(-plans.get(i).getRepayDays());

}else{

p2pLoanPlanVo.setRepayYqDays(0);

}

Answer 2

主要代码如下：
后台输出Excel文件代码：
OutputStream output = response.getOutputStream();
response.reset();
response.setHeader("Content-disposition", "attachment; filename=" + path);
response.setContentType("Content-Type:application/vnd.ms-excel ");
wb.write(output);
output.close();
前端代码：window.open("getExcelList","_blank");

Answer 3

做个临时文件，在重定向到这个临时文件，浏览器就会选择下载

追问

我不明白，没学这个多久，望耐心解释~十分感谢~

追答

在servlet中，

//把上边的改成
try{
    wb.write(response.getOutputStream());
}

Answer 4

可以用pageoffice导出excel. pageoffice 调用的是本地的office,导出excel可以弹出另存的对话框,用户可以选择自己想要的位置进行保存.