从 Ajax 下载文件(有点)

问题描述

我的 GSP 中有这个 ajax 调用:

I have this ajax call in my GSP:

$.ajax({
    url: '${request.contextPath + '/Ticket/passAll'}',
    type: 'POST',
    data: data,
    success: function() {
        alert("Success");
    }
});

这是来自我的控制器操作的代码块:

This is code block from my controller action:

response.setHeader("Content-disposition", "attachment; filename=sample.csv")
response.contentType = "application/vnd.ms-excel"

def outs = response.outputStream
def cols = [:]

tickets.each() {
    outs << it.ticketNo + ";" + it.subject
    outs << "
"
}

outs.flush()
outs.close()

我从通过 $.Ajax 方法从视图传递的数据中获取票证列表.比我将该数据格式化为 CSV 并且我想将该数据导出为 CSV 文件但没有任何反应.数据被发送到客户端，但没有文件可供下载，因为内容配置格式不正确.我错过了什么?我试过做这样的事情:

I get tickets list from data that I pass from view via $.Ajax method. Than I format that data as CSV and than I want to export that data as CSV file but nothing happens. The data is send to client but there is no file for download as content-disposition is not well formed. What am I missing?I've tried to do something like:

$.ajax({
    url: '${request.contextPath + '/Ticket/passAll'}',
    type: 'POST',
    data: aoData,
    dataType: 'text',
    success: function(result) {
        var uri = 'data:application/csv;charset=UTF-8,' + encodeURIComponent(result);
        window.open(uri, 'tiketi.csv');
    }
});

并且在控制器中我生成纯字符串，但是这样我得到一个没有扩展名的文件，这是不可接受的.

and in controller I generate plain string, but that way I get a file without extension which is unacceptable.

我怎样才能做到这一点?谢谢.

How can I achieve this? Thank you.

推荐答案

你不需要通过 ajax 来做.该页面不会重定向文件下载.

You dont need to do it via ajax. The page will not redirect for file downloads.

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