使用.NET框架、Web service实现Android的文件上传（一）

上面是上传结果的展示，下面具体讲一下实现过程。

一、Web Service (.NET)

namespace VedioPlayerWebService.service.vedios
{
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    [System.Web.Script.Services.ScriptService]
    [SoapDocumentService(RoutingStyle = SoapServiceRoutingStyle.RequestElement)]
    public class GetVedios : System.Web.Services.WebService
    {
        [WebMethod(EnableSession = true, Description = "上传文件")]
        public int FileUploadByBase64String(string base64string, string fileName1)
        {
            try
            {
                string fileName = "D:\\VedioPlayerWeb\\videos\\" + fileName1;
                // 取得文件夹
                string dir = fileName.Substring(0, fileName.LastIndexOf("\\"));
                //如果不存在文件夹，就创建文件夹
                if (!Directory.Exists(dir))
                    Directory.CreateDirectory(dir);
                byte[] bytes = Convert.FromBase64String(base64string);
                MemoryStream memoryStream = new MemoryStream(bytes, 0, bytes.Length);
                memoryStream.Write(bytes, 0, bytes.Length);
                // 写入文件
                File.WriteAllBytes(fileName, memoryStream.ToArray());
                if (File.Exists(fileName))
                {
                    FileStream fsSource = new FileStream(fileName, FileMode.Open, FileAccess.Read);
                    fsSource.Close();
                }
                //返回数据如果是1，上传成功！
                return 1;
            }
            catch (Exception ex)
            {
                //返回如果是-1，上传失败
                return -1;
            }
        }

    }
}

二、工具类(Android)

1、将要上传的文件转换成经过处理的Base64字符串

 /**
  *得到经过处理的Base64字符串
  * Created by WFZ on 2015/12/7.
  */
 public class Base64Util {
     public static String getBase64String(String path) {
         byte[] byteArray = null;
         byteArray = Fileutil.readFileToByteArray(new File(path));
         String strBase64 = new String(Base64.encode(byteArray,0));
         return strBase64;
     }
 }

2、读取文件的工具类

 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 /**
  * 读取文件的工具类
  * Created by WFZ on 2015/12/7.
  */
 public class Fileutil {
     public static byte[] readFileToByteArray(File file) {
         FileInputStream fileInputStream = null;
         ByteArrayOutputStream byteArrayOutputStream = null;
         try {
             fileInputStream = new FileInputStream(file);
             byteArrayOutputStream = new ByteArrayOutputStream();
             byte[] bt = new byte[1024];
             int len = 0;
             while ((len = fileInputStream.read(bt)) != -1) {
                 byteArrayOutputStream.write(bt, 0, len);
             }
             return byteArrayOutputStream.toByteArray();
         } catch (FileNotFoundException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         } catch (IOException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         } finally {
             if (fileInputStream != null) {
                 try {
                     fileInputStream.close();
                 } catch (IOException e) {
                     // TODO Auto-generated catch block
                     e.printStackTrace();
                 }
             }
             if (byteArrayOutputStream != null) {
                 try {
                     byteArrayOutputStream.close();
                 } catch (IOException e) {
                     // TODO Auto-generated catch block
                     e.printStackTrace();
                 }
             }
         }
         return null;
     }
 }

3、上传文件的工具类，这里需要soap的jar包

 import org.ksoap2.SoapEnvelope;
 import org.ksoap2.serialization.SoapObject;
 import org.ksoap2.serialization.SoapSerializationEnvelope;
 import org.ksoap2.transport.HttpTransportSE;

 /**
  *
  * Created by WFZ on 2015/12/7.
  */
 public class QueryUploadUtil {
     private String filename, base64string;

     public QueryUploadUtil(String base64str, String fileName) {
         this.filename = fileName;
         this.base64string = base64str;
     }
     // 需要实现Callable的Call方法
     public String call(String wsdl,String url) throws Exception {
         String str = "上传失败";
         // TODO Auto-generated method stub
         try {
             //创建SoapObject对象，并指定WebService的命名空间和调用的方法名
             SoapObject rpc = new SoapObject("http://tempuri.org/",
                     "FileUploadByBase64String");
             //设置WebService方法的参数
             rpc.addProperty("base64string", base64string);
             rpc.addProperty("fileName1", filename);
             //第3步：创建SoapSerializationEnvelope对象，并指定WebService的版本
             SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                     SoapEnvelope.VER11);
             // 设置bodyOut属性
             envelope.bodyOut = rpc;
             envelope.dotNet = true;
             envelope.setOutputSoapObject(rpc);
             //创建HttpTransportSE对象，并指定WSDL文档的URL
             /**
              * 创建WSDL文档有三种方法：
              * 在.NET中有三种方式生成WSDL：
              * 1．在Web Service的URL后面加上WDSL需求，如下：
              *  http://localhost/webExamples/simpleService.asmx?WSDL
              * 2．使用disco.exe。在命令行中写下如下的命令：
              *  disco http://localhost/webExamples/simpleService.asmx
              *3．使用System.Web.Services.Description命名空间下提供的类
              * */
             HttpTransportSE ht = new HttpTransportSE(wsdl);
             ht.debug = false;
             //调用WebService
             ht.call(url, envelope);
             //使用getResponse方法获得WebService方法的返回结果
             String result = String.valueOf(envelope.getResponse());
             //这个地方是我自己设置的从webservice返回的结果，“1”表示上传成功。
             if (result.toString().equals("1"))
                 str = "上传成功";
         } catch (Exception e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
             str = "上传错误";
         }
         return str;
     }
 }

三、布局文件

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
     tools:context=".MainActivity">
     <TextView
         android:id="@+id/tv1"
         android:layout_width="match_parent"
         android:layout_height="wrap_content" />
     <TextView
         android:id="@+id/tv2"
         android:layout_width="match_parent"
         android:layout_height="wrap_content" />
     <Button
         android:id="@+id/btn"
         android:layout_width="match_parent"
         android:text="上传"
         android:layout_height="wrap_content" />
     <ImageView
         android:id="@+id/iv"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content" />
     <TextView
         android:id="@+id/tv3"
         android:layout_width="match_parent"
         android:layout_height="wrap_content" />
 </LinearLayout>

四、MainActivity文件

 import android.content.DialogInterface;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.os.Handler;
 import android.os.Message;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.Button;
 import android.widget.ImageView;
 import android.widget.TextView;
 import android.widget.Toast;

 import com.lhgj.wfz.uploadfiles.utils.Base64Util;
 import com.lhgj.wfz.uploadfiles.utils.Fileutil;
 import com.lhgj.wfz.uploadfiles.utils.QueryUploadUtil;

 import java.io.File;

 public class MainActivity extends AppCompatActivity {
     private TextView tv1 = null;//上传的文件地址
     private TextView tv2 = null;//上传的文件名称
     private TextView tv3 = null;//上传是否成功提示
     private Button btn = null;//上传按钮
     private ImageView img = null;//图片
     private  String filePath="/data/data/com.lhgj.wfz.uploadfiles/";//手机中文件存储的位置
     private String fileName ="temp.jpg";//上传的图片
     private String wsdl ="http://192.168.15.4:1122/service/vedios/GetVedios.asmx?WSDL";//WSDL
     private String url ="http://192.168.15.4:1122/service/vedios/GetVedios.asmx/FileUploadByBase64String";//与webservice交互的地址

     /**
      * 由于上传文件是一个耗时操作，需要开一个异步，这里我们使用handle
      * */
     private Handler handler = new Handler() {
         public void handleMessage(android.os.Message msg) {
             String string = (String) msg.obj;
             Toast.makeText(MainActivity.this, string, Toast.LENGTH_LONG).show();;
             tv3.setText(string);
         };
     };

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         initView();
     }

     /**
      * 初始化view
      * */
     private void initView(){
         tv1 = (TextView) findViewById(R.id.tv1);
         tv2 = (TextView) findViewById(R.id.tv2);
         tv3 = (TextView) findViewById(R.id.tv3);
         btn = (Button) findViewById(R.id.btn);
         img = (ImageView) findViewById(R.id.iv);

         //设置显示的图片
         byte[] byteArray = null;
         byteArray = Fileutil.readFileToByteArray(new File(filePath+fileName));
         Bitmap bitmap = BitmapFactory.decodeByteArray(byteArray, 0,
                 byteArray.length);
         img.setImageBitmap(bitmap);

         //设置显示的文本
         tv1.setText("文件位置：" + filePath);
         tv2.setText("文件名称" + fileName);

         btn.setOnClickListener(new BtnOnclickListener());
     }

     /**
      * ImageView的事件响应
      * */
     private class BtnOnclickListener implements View.OnClickListener{

         @Override
         public void onClick(View v) {
             new Thread(new Runnable() {

                 @Override
                 public void run() {
                     // TODO Auto-generated method stub
                     Message message = Message.obtain();
                     String result="";
                     try {
                         QueryUploadUtil quu = new QueryUploadUtil(Base64Util.getBase64String(filePath+fileName), "temp.png");
                         result= quu.call(wsdl,wsdl);
                     } catch (Exception e) {
                         // TODO Auto-generated catch block
                         e.printStackTrace();
                     }
                     message.obj=result;
                     handler.sendMessage(message);
                 }
             }).start();
         }
     }
 }

---

可以去我的github上下载Demo，两个文件：一个Android客户端，一个服务端。下载地址：https://github.com/weifengzz/UploadFile_1