ADD file via upload

main/java/com/example/musicwork/freeModel/FileServiceDownload.java

@@ -0,0 +1,111 @@
+package com.example.musicwork.freeModel;
+
+import android.os.Environment;
+import android.util.Log;
+
+import org.apache.commons.io.IOUtils;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.net.HttpURLConnection;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLConnection;
+import java.net.URLEncoder;
+import java.util.HashMap;
+
+public class FileServiceDownload {
+
+    public static boolean downloadForm(String filename) throws IOException {
+        //String downloadDir = Environment.getExternalStorageDirectory();
+        // 普通参数
+        //String filename="111.txt";
+        String urlStr = "http://10.0.2.2:8080/Manager/readfil-servlet";
+        MyThread_filedownload myThread = new MyThread_filedownload(filename,urlStr);
+        try
+        {
+            myThread.start();
+            myThread.join();
+        }
+        catch (InterruptedException e)
+        {
+            e.printStackTrace();
+        }
+
+        return myThread.getResult();
+    }
+
+
+}
+class MyThread_filedownload extends Thread {
+
+    private String urlStr;
+    private String filename;
+    private String downloadDir;
+    public boolean result=false;
+
+    public MyThread_filedownload(String filename, String urlStr) {
+        this.urlStr = urlStr;
+        this.filename = filename;
+    }
+    @Override
+    public void run() {
+        try {
+            URL url = new URL(urlStr);
+            URLConnection urlConnection = url.openConnection();
+            HttpURLConnection httpURLConnection = (HttpURLConnection) urlConnection;
+            httpURLConnection.setRequestMethod("POST");
+            httpURLConnection.setRequestProperty("Charset", "UTF-8");
+            String data = "filename=" + URLEncoder.encode(filename, "utf-8");//设置数据
+            httpURLConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");//设置响应类型
+            httpURLConnection.setRequestProperty("Content-Length", data.length() + "");//设置内容长度
+            httpURLConnection.setDoOutput(true);//允许输出
+            OutputStream outputStream = httpURLConnection.getOutputStream();
+            outputStream.write(data.getBytes("utf-8"));//写入数据
+            httpURLConnection.connect();
+            // 文件大小
+            int fileLength = httpURLConnection.getContentLength();
+            URLConnection con = url.openConnection();
+            InputStream bin = new BufferedInputStream(httpURLConnection.getInputStream());
+            BufferedReader in = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream(), "utf-8"));
+
+            Log.e("download filename:",filename);
+            String filepath=Environment.getExternalStorageDirectory().getPath();
+            File file=new File(filepath,"/Music/"+filename);
+            if (!file.getParentFile().exists()) {
+                file.getParentFile().mkdirs();
+            }
+            OutputStream out = new FileOutputStream(file);
+            int size = 0;
+            byte[] buf = new byte[1024];
+            while ((size = bin.read(buf)) != -1) {
+                out.write(buf, 0, size);
+            }
+            IOUtils.copy(bin, out);
+            if(file.length()!=0){
+                result=true;
+            }
+            bin.close();
+            out.close();
+        } catch (MalformedURLException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+    public boolean getResult() {
+        return result;
+    }
+
+
+}
+