这是webstorm.upload.single上的服务器代码给出了未解决的错误我已经安装了multer模块但仍然给出错误,即使我不使用upload.single req.files在console.log
时给出undefinedvar express = require('express');
var logger = require('morgan');
var bodyParser = require('body-parser');
var request = require('request');
var multer = require('multer');
**var upload = multer({ dest: 'uploads/' });**
var app = express();
var port = process.env.PORT || 8080;
var config = require("./config");
var requests = require("./model")(config);
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
app.post('/uploadimage',**upload.single('img')**,function(req,res){
console.log(req.file);
});
这是客户端代码
public class filterpic extends AppCompatActivity {
File filePath;
String photoPath;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.filter_page);
Toolbar toolbar = (Toolbar) findViewById(R.id.appbar0);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
Bundle extras = getIntent().getExtras();
**photoPath = extras.getString("photoPath");
filePath = getFileStreamPath(photoPath);**
Bitmap bitmap = BitmapFactory.decodeFile(String.valueOf(filePath));
ImageView imgView = (ImageView) findViewById(R.id.imagebyte);
imgView.setImageBitmap(bitmap);
}
public void upload(View view){
new HttpUpload(this,String.valueOf(filePath)).execute();
}
}
public class HttpUpload extends AsyncTask<Void, Integer, Integer> {
private Context context;
private String imgPath;
int serverResponseCode = 0;
public HttpUpload(Context context, String imgPath) {
super();
this.context = context;
this.imgPath = imgPath;
}
@Override
protected Integer doInBackground(Void... params) {
String upLoadServerUri = "http://192.168.10.182:8080/uploadimage";
HttpURLConnection conn = null;
DataOutputStream dos = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
File sourceFile = new File(imgPath);
if (!sourceFile.isFile()) {
Log.e("uploadFile", "Source File Does not exist");
return 0;
}
try { // open a URL connection to the Servlet
FileInputStream fileInputStream = new FileInputStream(sourceFile);
Log.i("uploadFile", "" + fileInputStream);
URL url = new URL(upLoadServerUri);
conn = (HttpURLConnection) url.openConnection(); // Open a HTTP connection to the URL
conn.setDoInput(true); // Allow Inputs
conn.setDoOutput(true); // Allow Outputs
conn.setUseCaches(false); // Don't use a Cached Copy
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("ENCTYPE", "multipart/form-data");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
conn.setRequestProperty("uploaded_file",imgPath );
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""+ imgPath + "\"" + lineEnd);
dos.writeBytes(lineEnd);
bytesAvailable = fileInputStream.available(); // create a buffer of maximum size
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// read file and write it into form...
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
// send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// Responses from the server (code and message)
serverResponseCode = conn.getResponseCode();
String serverResponseMessage = conn.getResponseMessage();
Log.i("uploadFile", "HTTP Response is : " + serverResponseMessage + ": " + serverResponseCode);
//close the streams //
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
ex.printStackTrace();
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
} catch (Exception e) {
e.printStackTrace();
Log.e("Upload file to server Exception", "Exception : " + e.getMessage(), e);
}
return null;
}
}
答案 0 :(得分:1)
在暴风雨之后回答,但谷歌搜索这个问题,这是最初的结果之一。安装multer的类型定义可以解决Webstorm中未解决的错误。
import React from 'react';
import Home from "./components/Home";
import Chat from "./components/Chat";
import {
Router,
Scene
} from "react-native-router-flux";
class App extends React.Component {
render() {
return {
<Router>
<Scene key="root">
<Scene key="home" component={Home} title="Home" />
<Scene key="home" component={Home} title="Chat" />
</Scene>
</Router>
};
}
}
export default App
答案 1 :(得分:0)
您的节点服务器正在查找名为(int?)null
的文件字段,但您的Java代码正在使用img
。更改一个或另一个它应该工作(假设Java客户端正确格式化请求)。