仅仅是之前收集的代码备存，后续在展开

代码思路：

1、HTML构建一个form表单

2、form表单里面动态填充需要输出的内容

3、然后form表单submit提交

4、ctrl层（后台）捕获内容并根据数据要求做相应的输出

HTML

JS：

function formPostDown(fileType, data) {
    $("#form_data").attr("action", globalPhyPath + "/ctrl/site/outputData");
    $("#txtFormData_data").val(data);
    $("#txtFormData_fileType").val(fileType);
    $("#form_data").submit();
}

CTRL：

/**
 * 
/ctrl/site/outputData
 *
 * @param request
 * @param response
 * @return
 */
@PostMapping("outputData")
public void outputData(HttpServletRequest request, HttpServletResponse response) {

    try {
        String name = request.getParameter("name");
        String fileType = request.getParameter("fileType");
        String data = request.getParameter("data");

        String fileName = null;

        name = name.replace(":", "");
        name = name.replace("\\", "");
        name = name.replace("/", "");
        name = name.replace("|", "");
        name = name.replace("<", name='name.replace("'>", "");
        name = name.replace("?", "");
        name = name.replace("*", "");
        name = name.replace("\"", "");
        name = name.replace("'", "");

        if (StrUniUtil.strIsTrimEmpty(fileType)) {
            fileName = name + "_" + DateUtil.nowToLinkShow();
        } else {
            fileName = name + "_" + DateUtil.nowToLinkShow() + "." + fileType.trim();
        }

        byte[] buffer = data.getBytes("UTF-8");

        // 清空response
        response.reset();
        // 设置response的Header
        response.setCharacterEncoding("UTF-8");
        //Content-Disposition的作用：告知浏览器以何种方式显示响应返回的文件，用浏览器打开还是以附件的形式下载到本地保存
        //attachment表示以附件方式下载   inline表示在线打开   "Content-Disposition: inline; filename=文件名.mp3"
        // filename表示文件的默认名称，因为网络传输只支持URL编码的相关支付，因此需要将文件名URL编码后进行传输,前端收到后需要反编码才能获取到真正的名称
        response.addHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
        // 告知浏览器文件的大小
        // response.addHeader("Content-Length", "" + file.length());
        OutputStream outputStream = new BufferedOutputStream(response.getOutputStream());
        response.setContentType("application/octet-stream");
        outputStream.write(buffer);
        outputStream.flush();
    } catch (IOException ex) {
        ex.printStackTrace();
    }
}


/**
 * 
/ctrl/site/actionOutputData
 *
 * @param request
 * @param response
 * @return
 */
@PostMapping("actionOutputData")
public void actionOutputData(HttpServletRequest request, HttpServletResponse response) {

    try {
        String name = request.getParameter("name");
        String fileType = request.getParameter("fileType");
        String action = request.getParameter("action");
        String reqData = request.getParameter("data");
        String data = "";
        SaveOutFileBs outFileBs = null;
        SaveOutFileBaseCp cp = null;

        switch (action) {
            case "saveOutCsvFile":
                outFileBs = new SaveOutFileBs();
                cp = JSON.toJavaObject(JSON.parseObject(reqData), SaveOutFileBaseCp.class);
                data = outFileBs.toCsvSaveOutFile(cp);
                break;
            default:
                data = reqData;
                break;
        }

        String fileName = null;

        name = name.replace(":", "");
        name = name.replace("\\", "");
        name = name.replace("/", "");
        name = name.replace("|", "");
        name = name.replace("<", name='name.replace("'>", "");
        name = name.replace("?", "");
        name = name.replace("*", "");
        name = name.replace("\"", "");
        name = name.replace("'", "");

        if (StrUniUtil.strIsTrimEmpty(fileType)) {
            fileName = name + "_" + DateUtil.nowToLinkShow();
        } else {
            fileName = name + "_" + DateUtil.nowToLinkShow() + "." + fileType.trim();
        }

        byte[] buffer = data.getBytes("UTF-8");

        // 清空response
        response.reset();
        // 设置response的Header
        response.setCharacterEncoding("UTF-8");
        //Content-Disposition的作用：告知浏览器以何种方式显示响应返回的文件，用浏览器打开还是以附件的形式下载到本地保存
        //attachment表示以附件方式下载   inline表示在线打开   "Content-Disposition: inline; filename=文件名.mp3"
        // filename表示文件的默认名称，因为网络传输只支持URL编码的相关支付，因此需要将文件名URL编码后进行传输,前端收到后需要反编码才能获取到真正的名称
        response.addHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
        // 告知浏览器文件的大小
        // response.addHeader("Content-Length", "" + file.length());
        OutputStream outputStream = new BufferedOutputStream(response.getOutputStream());
        response.setContentType("application/octet-stream");
        outputStream.write(buffer);
        outputStream.flush();
    } catch (IOException ex) {
        ex.printStackTrace();
    }
}