java浏览器不生成文件下载对话框
我当前的场景是JavaScript客户端有一组数据,我将这些数据发布到服务器以处理/转换为不同的格式(例如CSV),现在我想将转换后的数据从服务器发送到客户端
我设置了响应的内容类型,但浏览器不生成文件对话框
以下是我的控制器的外观:
@RequestMapping(value="/exportBoxes/{type}/{filename:.+}", method=RequestMethod.POST)
public String exportBoxes(@RequestBody String body, @PathVariable String type,
@PathVariable String filename, HttpServletResponse response) throws IOException
{
JsonObject jsonObject = new JsonParser().parse(body).getAsJsonObject();
//grab the data from the JSONobject
String data = jsonObject.get("JSONdata").getAsString();
//create output stream writer
PrintWriter p = new PrintWriter(response.getOutputStream());
//set response type and print header
if(type.equals("csv"))
{
response.setContentType("text/csv");
response.setHeader("Content-Disposition", "attachment; filename=\"" + filename + "\"");
}
//print the points to the file
for(int i = 0; i < splitPoints.length; i++)
{
//print remainder of CSV file - abstracted
}
p.flush(); //flush the stream
response.flushBuffer();
p.close(); //close the stream
return "success";
}
下面是发布数据的客户端函数:
DAService.prototype.exportBoxes = function(type, filename, data) {
var path = 'api/rest/da/exportBoxes/' + type + '/' + filename
var url = (this.connection) ? this.connection + path : path;
var JSONdata = '';
var returnType = ''
//create JSON string to pass to Java controller
if(type == 'csv')
{
JSONdata = '{ "JSONdata" : "' + data.replace(/ /g, '') + '" }';
returnType = 'text/csv';
}
else
{
throw "Invalid export format " + type;
}
$j.ajax({
url: url,
contentType: 'application/json',
type: 'POST',
dataType: returnType,
data: JSONdata,
success: function(returnedData){
console.log("exportBox successful");
},
error: function(x,y,z) {
console.log("exportBox failed with error '" + y + "'");
},
complete: function(empty, textStatus){
console.log("exportBox complete textStatus='" + textStatus + "'");
}
});
};
此代码不会生成错误,服务器的响应中包含CSV文件,我无法让客户端生成下载对话框
有一件我没有看到的东西,有人能帮我吗
# 1 楼答案
您可能希望尝试发布表单,而不是使用
$.ajax
:(我还没有测试过。)关键是,当你真的发布表单时,浏览器知道如何解释响应主体,它应该注意到你的附件