ADD file via upload

main/java/recognition/Image.java

@@ -0,0 +1,137 @@
+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;
+
+    }
+}