MusicWork/main/java/recognition

package recognition;

import android.util.Log;

import com.example.musicwork.SignIn;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;

public class Image {
    public static boolean uploadImage(String filepath,String filename) throws IOException {
        String fileFormName="MIDI";
        String newFileName=filename;
        File uploadFile = new File(filepath);

        //Log.e("filelegth:",String.valueOf(uploadFile.length()));
        // 普通参数
        HashMap<String , String> params = new HashMap<>();
        params.put("username", SignIn.author_name);
        params.put("filename", filename);
        String urlStr = "http://42.193.97.132:8080/youhua/uploadfile-servlet";
        MyThread_fileImage myThread = new MyThread_fileImage(fileFormName,newFileName,uploadFile,params,urlStr);
        try
        {
            myThread.start();
            myThread.join();
        }
        catch (InterruptedException e)
        {
            e.printStackTrace();
        }

        return myThread.getResult();
    }


}
class MyThread_fileImage extends Thread {
    private static final String BOUNDARY = "----WebKitFormBoundaryT1HoybnYeFOGFlBR";

    private String fileFormName;
    private String newFileName;
    private String urlStr;
    private File uploadFile;
    private HashMap<String, String> params;
    HttpURLConnection httpURLConnection;
    public boolean result=false;

    public MyThread_fileImage(String fileFormName, String newFileName, File uploadFile, HashMap<String, String> params, String urlStr) {
        this.fileFormName = fileFormName;
        this.newFileName = newFileName;
        this.urlStr = urlStr;
        this.uploadFile = uploadFile;
        this.params = params;
    }


    @Override
    public void run() {
        try {
            StringBuilder sb = new StringBuilder();
            /**
             * 普通的表单数据
             */
            if (params != null) {
                for (String key : params.keySet()) {
                    sb.append("--" + BOUNDARY + "\r\n");
                    sb.append("Content-Disposition: form-data; name=\"" + key + "\"" + "\r\n");
                    sb.append("\r\n");
                    sb.append(params.get(key) + "\r\n");
                }
            }

            /**
             * 上传文件的头
             */
            sb.append("--" + BOUNDARY + "\r\n");
            sb.append("Content-Disposition: form-data; name=\"" + fileFormName + "\"; filename=\"" + newFileName + "\""
                    + "\r\n");
            //sb.append("Content-Type: image/jpeg" + "\r\n");// 如果服务器端有文件类型的校验，必须明确指定ContentType
            sb.append("\r\n");

            byte[] headerInfo = sb.toString().getBytes("UTF-8");
            Log.e("sb:",sb.toString());
            byte[] endInfo = ("\r\n--" + BOUNDARY + "--\r\n").getBytes("UTF-8");
            URL url = new URL(urlStr);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("POST");
            // 设置传输内容的格式，以及长度
            conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
            conn.setRequestProperty("Content-Length",
                    String.valueOf(headerInfo.length + uploadFile.length() + endInfo.length));
            conn.setDoOutput(true);
            //out = (DataOutputStream) conn.getOutputStream();
            Log.e("file legth",String.valueOf(uploadFile.length()));
            InputStream in = new FileInputStream(uploadFile);
            OutputStream out = conn.getOutputStream();
            // 写入头部 （包含了普通的参数，以及文件的标示等）
            out.write(headerInfo);
            // 写入文件
            byte[] buf = new byte[1024];
            int len;
            while ((len = in.read(buf)) != -1) {
                out.write(buf, 0, len);
            }
            Log.e("file legth",String.valueOf(uploadFile.length()));
            // 写入尾部
            out.write(endInfo);
            in.close();
            out.close();
            if (conn.getResponseCode() == 200) {
                result=true;
                // System.out.println("文件上传成功");
                Log.e("res",String.valueOf(result));
            }else{
                Log.e("res",String.valueOf(conn.getResponseCode()));
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public boolean getResult() {
        return result;
    }

    public HttpURLConnection gethttpURLConnection() {
        return httpURLConnection;

    }
}