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