android手机客户端上传文件，java servlet服务器端接收并保存到服务器

来源：互联网发布：傲剑坐骑数据编辑：程序博客网时间：2024/05/01 09:16

android客户端代码：

Java代码  
public class MainActivity extends Activity  
{  
    private TextView uploadInfo;  
  
    @Override  
    protected void onCreate(Bundle savedInstanceState)  
    {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_main);  
          
        uploadInfo = (TextView) findViewById(R.id.upload_info);  
  
        uploadFile();  
    }  
  
    public void uploadFile()  
    {  
        //服务器端地址  
        String url = "http://192.168.0.108:8080/UploadFileServer/upload";  
        //手机端要上传的文件，首先要保存你手机上存在该文件  
        String filePath = Environment.getExternalStorageDirectory()  
                + "/1/power.apk";  
  
        AsyncHttpClient httpClient = new AsyncHttpClient();  
  
        RequestParams param = new RequestParams();  
        try  
        {  
            param.put("file", new File(filePath));  
            param.put("content", "liucanwen");  
              
            httpClient.post(url, param, new AsyncHttpResponseHandler()  
            {  
                @Override  
                public void onStart()  
                {  
                    super.onStart();  
                      
                    uploadInfo.setText("正在上传...");  
                }  
                  
                @Override  
                public void onSuccess(String arg0)  
                {  
                    super.onSuccess(arg0);  
  
                    Log.i("ck", "success>" + arg0);  
                      
                    if(arg0.equals("success"))  
                    {  
                        Toast.makeText(MainActivity.this, "上传成功！", 1000).show();  
                    }  
                      
                    uploadInfo.setText(arg0);  
                }  
                  
                @Override  
                public void onFailure(Throwable arg0, String arg1)  
                {  
                    super.onFailure(arg0, arg1);  
                      
                    uploadInfo.setText("上传失败！");  
                }  
            });  
              
        } catch (FileNotFoundException e)  
        {  
            e.printStackTrace();  
            Toast.makeText(MainActivity.this, "上传文件不存在！", 1000).show();  
        }  
    }  
}  

服务器端代码：

Java代码  
public class UploadFileServlet extends HttpServlet  
{  
  
    public void doPost(HttpServletRequest request, HttpServletResponse response)  
            throws ServletException, IOException  
    {  
        response.setContentType("text/html");  
        PrintWriter out = response.getWriter();  
  
        // 创建文件项目工厂对象  
        DiskFileItemFactory factory = new DiskFileItemFactory();  
  
        // 设置文件上传路径  
        String upload = this.getServletContext().getRealPath("/upload/");  
        // 获取系统默认的临时文件保存路径，该路径为Tomcat根目录下的temp文件夹  
        String temp = System.getProperty("java.io.tmpdir");  
        // 设置缓冲区大小为 5M  
        factory.setSizeThreshold(1024 * 1024 * 5);  
        // 设置临时文件夹为temp  
        factory.setRepository(new File(temp));  
        // 用工厂实例化上传组件,ServletFileUpload 用来解析文件上传请求  
        ServletFileUpload servletFileUpload = new ServletFileUpload(factory);  
  
        // 解析结果放在List中  
        try  
        {  
            List<FileItem> list = servletFileUpload.parseRequest(request);  
  
            for (FileItem item : list)  
            {  
                String name = item.getFieldName();  
                InputStream is = item.getInputStream();  
  
                if (name.contains("content"))  
                {  
                    System.out.println(inputStream2String(is));  
                } else if(name.contains("file"))  
                {  
                    try  
                    {  
                        inputStream2File(is, upload + "\\" + item.getName());  
                    } catch (Exception e)  
                    {  
                        e.printStackTrace();  
                    }  
                }  
            }  
              
            out.write("success");  
        } catch (FileUploadException e)  
        {  
            e.printStackTrace();  
            out.write("failure");  
        }  
  
        out.flush();  
        out.close();  
    }  
  
    // 流转化成字符串  
    public static String inputStream2String(InputStream is) throws IOException  
    {  
        ByteArrayOutputStream baos = new ByteArrayOutputStream();  
        int i = -1;  
        while ((i = is.read()) != -1)  
        {  
            baos.write(i);  
        }  
        return baos.toString();  
    }  
  
    // 流转化成文件  
    public static void inputStream2File(InputStream is, String savePath)  
            throws Exception  
    {  
        System.out.println("文件保存路径为:" + savePath);  
        File file = new File(savePath);  
        InputStream inputSteam = is;  
        BufferedInputStream fis = new BufferedInputStream(inputSteam);  
        FileOutputStream fos = new FileOutputStream(file);  
        int f;  
        while ((f = fis.read()) != -1)  
        {  
            fos.write(f);  
        }  
        fos.flush();  
        fos.close();  
        fis.close();  
        inputSteam.close();  
          
    }  
  
}  

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