busboy 收不到上传的文件

busboy won't receive uploaded files

我的表格很简单。它使用 ng-flow 来处理文件上传:

<form class="form-horizontal" enctype="multipart/form-data">
    <div flow-init="{target: '/test', testChunks: false, query: {'_csrf': '{{csrf}}', 'somestring': 'teststring'} }"
         flow-files-submitted="data.flow.upload()"
         flow-name="data.flow">

         <input type="file" flow-btn/>
    </div>
</form>

一旦选择了图像,ng-flow 将对目标路线执行 POST。似乎图像已发送,因为请求有效负载有一堆类似的东西:

1048576
------WebKitFormBoundaryw2YAG9m602ICPd0Q
Content-Disposition: form-data; name="flowCurrentChunkSize"

图像不是很大 (~1MB)

在 nodejs 端(使用 express):

var busboy = require('connect-busboy')({
    limits: {
        fileSize: 10 * 1024 * 1024
    }
});
router.post('/test', busboy, function(req, res) {
    console.log('test called');
    console.log(req.busboy);
    if (req.busboy) {
        req.busboy.on('file', function(fieldname, file, filename, encoding, mimetype) {
            console.log("this is fieldname: " + fieldname);
        });
        req.busboy.on('field', function(fieldname, val, fieldnameTruncated, valTruncated) {
            console.log('Field [' + fieldname + ']: value: ' + inspect(val));
        });
    }

    res.json();
});

req.busboy returns 一个充满东西的对象,但是 req.busboy.on('file'...req.busboy.on('field'...) 永远不会触发。

为什么服务员看不到我的字符串和图像?

您需要将请求通过管道传递给 busboy,以便它可以解析表单:

req.pipe(req.busboy);