我是 Node js 新手,现在我想做图像上传。所以我下载了 Express 框架来处理上传。请帮助我如何在服务器端处理该上传。
我创建了这样的表单,如何在后端 Node js中处理这个问题
<form method="post" enctype="multipart/form-data" action="/file-upload">
<input type="text" name="username">
<input type="password" name="password">
<input type="file" name="thumbnail">
<input type="submit">
最佳答案
使用此方法上传
app.post('/upload', function(req, res) {
// get the temporary location of the file
var tmp_path = req.files.thumbnail.path;
// set where the file should actually exists - in this case it is in the "images" directory
target_path = '/tmp/' + req.files.thumbnail.name;
// move the file from the temporary location to the intended location
fs.rename(tmp_path, target_path, function(err) {
if (err) throw err;
// delete the temporary file, so that the explicitly set temporary upload dir does not get filled with unwanted files
fs.unlink(tmp_path, function() {
if (err) throw err;
});
});
});
检索时在此方法中显示该路径
fs.readFile(target_path, "binary", function(error, file) {
if(error) {
res.writeHead(500, {"Content-Type": "text/plain"});
res.write(error + "\n");
res.end();
} else {
res.writeHead(200, {"Content-Type": "image/png"});
res.write(file, "binary");
}
});
关于node.js - Node.js中的图片上传,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/12524804/