嗨,我是android的新手!
我想将图像文件从android客户端上传到服务器(服务器制作缩略图,并返回缩略图的url)。
但是我仍然停留在此错误消息中。
{"errorMessage":"RequestId: 8e2a21b8-e62e-11e8-8585-d9b6fdfec9b9 Process exited before completing request"}!
我试图在stackoverflow中找到此错误代码,但找不到Android的答案。
请帮助或给我链接,我可以在那里解决这个问题...
这是服务器代码。
const AWS = require('aws-sdk');
const multipart = require("parse-multipart");
const s3 = new AWS.S3();
const bluebird = require('bluebird');
exports.handler = function(event, context) {
let result = [];
const bodyBuffer = new Buffer(event['body-json'].toString(), 'base64');
const boundary = multipart.getBoundary(event.params.header['Content-Type']);
const parts = multipart.Parse(bodyBuffer, boundary);
const files = getFiles(parts);
return bluebird.map(files, file => {
console.log('UploadCall');
return upload(file)
.then(
data => {
result.push({
'bucket': data.Bucket,
'key': data.key,
'fileUrl': file.uploadFile.fullPath })
console.log( `DATA => ${JSON.stringify(data, null, 2 )}`);
},
err => {
console.log(`S3 UPLOAD ERR => ${err}`);
}
)
})
.then(_=> {
return context.succeed(result);
});
}
let upload = function(file) {
console.log('PutObject Call')
return s3.upload(file.params).promise();
};
let getFiles = function(parts) {
let files = [];
parts.forEach(part => {
const buffer = part.data
const fileName = part.filename;
const fileFullName = fileName;
const originBucket = 'dna-edge/images';
const filefullPath = `https://s3.ap-northeast-2.amazonaws.com/${originBucket}/${fileFullName}`;
const params = {
Bucket: originBucket,
Key: fileFullName,
Body: buffer
};
const uploadFile = {
size: buffer.toString('ascii').length,
type: part.type,
name: fileName,
fullPath: filefullPath
};
files.push({ params, uploadFile })
});
return files;
};
这是客户端代码。(imgURL看起来像/storage/emulated/0/DCIM/img/1493742568136.jpg)
public static String requestHttpPostLambda(String url, String imgURL){
/*
await axios.post(`${AWS_LAMBDA_API_URL}?type=${type}`, formData,
{ headers: { 'Content-Type': 'multipart/form-data' }})
.then((response) => {result = response});
*/
String result=null;
try {
HttpClient client = new DefaultHttpClient();
String postURL = url;
HttpPost post = new HttpPost(postURL);
post.setHeader("Content-Type", "multipart/form-data");
File file = new File(imgURL);
MultipartEntityBuilder builder = MultipartEntityBuilder.create();
builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
builder.addPart("image", new FileBody(file));
post.setEntity(builder.build());
HttpResponse responsePOST = client.execute(post);
Log.e("HttpResponse", responsePOST.getStatusLine()+"");
HttpEntity resEntity = responsePOST.getEntity();
if (resEntity != null) {
result = EntityUtils.toString(resEntity);
}
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
答案 0 :(得分:0)
欢迎来到stackoverflow。
由于某种原因,AWS不太适合更新文档,请不要使用context.succeed,请使用作为第三个参数传递的回调。
我也将转移到Node 8.10运行时,因为那样的话,您可以使用async / await而不是使用promise / then模式。
export default(event, context, callback) => {
try {
// do some stuff
callback(null, SOME_VALID_HTTP_RESPONSE)
} catch(e){
callback(e, null)
}
}
Lambda失败的原因有很多,如果该过程在完成之前退出,要么崩溃要么您没有返回有效的HTTP响应(如果您的lambda位于API网关后面)
两种解决方案-首先要看的地方是cloudwatch,找到您的lambda函数名称,并检查最新日志以查找错误消息。
第二步-签出我的答案here,因此当函数成功执行时,您需要向API网关返回有效的HTTP响应,因此从本质上讲,如果您从那里使用我的代码,则可以执行以下操作:
callback(null, responder.success({someJson: someValue}))
任何问题都让我知道:-)
编辑:我正在更新这个问题,我只是在为将多个文件上传到S3做一个例子!