Android想服务器传图片，透过流的方式。还有读取服务器图片（文件），也通过流的方式。

时间：2022-08-14 04:58:47

/**

 * Created by Administrator on 2016/7/19.

 */

import android.util.Log;

import com.gtercn.asPolice.net.HttpsTrustManager;

import java.io.DataOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.InputStream;

import java.net.MalformedURLException;

import java.net.URL;

import java.security.KeyManagementException;

import java.security.NoSuchAlgorithmException;

import java.security.SecureRandom;

import java.util.UUID;

import javax.net.ssl.HostnameVerifier;

import javax.net.ssl.HttpsURLConnection;

import javax.net.ssl.SSLContext;

import javax.net.ssl.SSLSession;

import javax.net.ssl.SSLSocketFactory;

import javax.net.ssl.TrustManager;

/**

 *

 * 上传头像工具类

 * Https协议的

 * @author spring sky Email:vipa1888@163.com QQ:840950105 MyName:石明政

 */

public class UpdateImage {

    private static final String TAG = "uploadFile";

    private static final int TIME_OUT =  * ; // 超时时间

    private static final String CHARSET = "utf-8"; // 设置编码

    /**

     * Android上传文具到服务端

     *

     * @param file

     *            需要上传的文件

     * @param RequestURL

     *            请求的rul

     * @return 返回响应的内容

     */

    public static String uploadFile(File file, String RequestURL) {

        String result = null;

        String BOUNDARY = UUID.randomUUID().toString(); // 边界标识 随机生成

        String PREFIX = "--", LINE_END = "\r\n";

        String CONTENT_TYPE = "multipart/form-data"; // 内容类型

        try {

            URL url = new URL(RequestURL);

            HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();

            conn.setSSLSocketFactory(getSocketFactoryCertificate());

            conn.setHostnameVerifier(getHostnameVerifier());

            conn.setReadTimeout(TIME_OUT);

            conn.setConnectTimeout(TIME_OUT);

            conn.setDoInput(true); // 允许输入流

            conn.setDoOutput(true); // 允许输出流

            conn.setUseCaches(false); // 不允许使用缓存

            conn.setRequestMethod("POST"); // 请求方式

            conn.setRequestProperty("Charset", CHARSET); // 设置编码

            conn.setRequestProperty("connection", "keep-alive");

            conn.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary="

                    + BOUNDARY);

            conn.setRequestProperty("api-version", "1.0");

            if (file != null) {

                /**

                 * 当文件不为空，把文件包装并且上传

                 */

                Log.e("======","====DataOutputStream===");

                DataOutputStream dos = new DataOutputStream(conn.getOutputStream());

                StringBuffer sb = new StringBuffer();

                sb.append(PREFIX);

                sb.append(BOUNDARY);

                sb.append(LINE_END);

                /**

                 * 这里重点注意： name里面的值为服务端需要key 只有这个key 才可以得到对应的文件

                 * filename是文件的名字，包含后缀名的 比如:abc.png

                 */

                sb.append("Content-Disposition: form-data; name=\"avatar\"; filename=\""

                        + file.getName() + "\"" + LINE_END);

                        sb.append("Content-Type: application/octet-stream; charset="

                                + CHARSET + LINE_END);

                sb.append(LINE_END);

                dos.write(sb.toString().getBytes());

                InputStream is = new FileInputStream(file);

                byte[] bytes = new byte[];

                int len = ;

                while ((len = is.read(bytes)) != -) {

                    dos.write(bytes, , len);

                }

                is.close();

                dos.write(LINE_END.getBytes());

                byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINE_END)

                        .getBytes();

                dos.write(end_data);

                dos.flush();

                Log.e("======","====flush===");

                /**

                 * 获取响应码 200=成功 当响应成功，获取响应的流

                 */

                int res = conn.getResponseCode();

                Log.e("========", "response code:" + res);

                 if(res==)

                 {

                Log.e(TAG, "request success");

                InputStream input = conn.getInputStream();

                StringBuffer sb1 = new StringBuffer();

                int ss;

                while ((ss = input.read()) != -) {

                    sb1.append((char) ss);

                }

                result = sb1.toString();

                Log.e(TAG, "result : " + result);

                 }

                 else{

                 Log.e(TAG, "request error");

                 }

            }

        } catch (MalformedURLException e) {

            e.printStackTrace();

        } catch (IOException e) {

            e.printStackTrace();

        }

        return result;

    }

    private static SSLSocketFactory getSocketFactoryCertificate(){

//        String keyStoreType = "BKS";

//        int keyStoreResId = R.raw.cert;

        try {

/*            CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");

            // cert is under R.raw.cert

            InputStream inputStream = ContextService.getInstance().getContext().

                    getResources().openRawResource(keyStoreResId);//(R.raw.cert);

            Certificate certificate = certificateFactory.generateCertificate(inputStream);

            inputStream.close();

            if(keyStoreType == null || keyStoreType.length() == 0){

                keyStoreType = KeyStore.getDefaultType();

            }

            //BKS

            KeyStore trustStore = KeyStore.getInstance(keyStoreType);

            trustStore.load(null, null);

            trustStore.setCertificateEntry("ca",certificate);

            String tmfAlgorithm = TrustManagerFactory.getDefaultAlgorithm();

            TrustManagerFactory tmf = TrustManagerFactory.getInstance(tmfAlgorithm);

            tmf.init(trustStore);

//            TrustManager[] trustManagers = new TrustManager[]{new HttpsTrustManager(tmf.getTrustManagers())};

            TrustManager[] trustManagers = getWrappedTrustManagers(tmf.getTrustManagers());*/

            TrustManager[] trustManagers = new TrustManager[]{new HttpsTrustManager()};

            SSLContext ssLContext = SSLContext.getInstance("TLS");

            ssLContext.init(null, trustManagers, new SecureRandom());

            return ssLContext.getSocketFactory();

        } catch (NoSuchAlgorithmException e) {

            e.printStackTrace();

        } catch (KeyManagementException e) {

            e.printStackTrace();

        }

        return null;

    }

    private static HostnameVerifier getHostnameVerifier() {

        return new HostnameVerifier() {

            @Override

            public boolean verify(String hostname, SSLSession session) {

                //return true; // verify always returns true, which could cause insecure network traffic due to trusting TLS/SSL server certificates for wrong hostnames

                HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier();

                return true;//hv.verify("localhost", session);

            }

        };

    }

}
import android.util.Log;

import com.gtercn.asPolice.net.HttpsTrustManager;

import java.io.DataOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.InputStream;

import java.net.MalformedURLException;

import java.net.URL;

import java.security.KeyManagementException;

import java.security.NoSuchAlgorithmException;

import java.security.SecureRandom;

import java.util.UUID;

import javax.net.ssl.HostnameVerifier;

import javax.net.ssl.HttpsURLConnection;

import javax.net.ssl.SSLContext;

import javax.net.ssl.SSLSession;

import javax.net.ssl.SSLSocketFactory;

import javax.net.ssl.TrustManager;

/**

 *

 * 上传头像工具类

 *Http协议的

 * @author spring sky Email:vipa1888@163.com QQ:840950105 MyName:石明政

 */

public class UpdateImage {

    private static final String TAG = "uploadFile";

    private static final int TIME_OUT = 10 * 1000; // 超时时间

    private static final String CHARSET = "utf-8"; // 设置编码

    /**

     * Android上传文具到服务端

     *

     * @param file

     *            需要上传的文件

     * @param RequestURL

     *            请求的rul

     * @return 返回响应的内容

     */

    public static String uploadFile(File file, String RequestURL) {

        String result = null;

        String BOUNDARY = UUID.randomUUID().toString(); // 边界标识 随机生成

        String PREFIX = "--", LINE_END = "\r\n";

        String CONTENT_TYPE = "multipart/form-data"; // 内容类型

        try {

            URL url = new URL(RequestURL);

            HttpURLConnection conn = (HttpURLConnection) url.openConnection();

            conn.setReadTimeout(TIME_OUT);

            conn.setConnectTimeout(TIME_OUT);

            conn.setDoInput(true); // 允许输入流

            conn.setDoOutput(true); // 允许输出流

            conn.setUseCaches(false); // 不允许使用缓存

            conn.setRequestMethod("POST"); // 请求方式

            conn.setRequestProperty("Charset", CHARSET); // 设置编码

            conn.setRequestProperty("connection", "keep-alive");

            conn.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary="

                    + BOUNDARY);

            conn.setRequestProperty("api-version", "1.0"); //请求头，根据要求要还是不要

            if (file != null) {

                /**

                 * 当文件不为空，把文件包装并且上传

                 */

                Log.e("======","====DataOutputStream===");

                DataOutputStream dos = new DataOutputStream(conn.getOutputStream());

                StringBuffer sb = new StringBuffer();

                sb.append(PREFIX);

                sb.append(BOUNDARY);

                sb.append(LINE_END);

                /**

                 * 这里重点注意： name里面的值为服务端需要key 只有这个key 才可以得到对应的文件

                 * filename是文件的名字，包含后缀名的 比如:abc.png

                 */

                sb.append("Content-Disposition: form-data; name=\"avatar\"; filename=\""

                        + file.getName() + "\"" + LINE_END);

                        sb.append("Content-Type: application/octet-stream; charset="

                                + CHARSET + LINE_END);

                sb.append(LINE_END);

                dos.write(sb.toString().getBytes());

                InputStream is = new FileInputStream(file);

                byte[] bytes = new byte[1024];

                int len = 0;

                while ((len = is.read(bytes)) != -1) {

                    dos.write(bytes, 0, len);

                }

                is.close();

                dos.write(LINE_END.getBytes());

                byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINE_END)

                        .getBytes();

                dos.write(end_data);

                dos.flush();

                Log.e("======","====flush===");

                /**

                 * 获取响应码 200=成功 当响应成功，获取响应的流

                 */

                int res = conn.getResponseCode();

                Log.e("========", "response code:" + res);

                 if(res==200)

                 {

                Log.e(TAG, "request success");

                InputStream input = conn.getInputStream();

                StringBuffer sb1 = new StringBuffer();

                int ss;

                while ((ss = input.read()) != -1) {

                    sb1.append((char) ss);

                }

                result = sb1.toString();

                Log.e(TAG, "result : " + result);

                 }

                 else{

                 Log.e(TAG, "request error");

                 }

            }

        } catch (MalformedURLException e) {

            e.printStackTrace();

        } catch (IOException e) {

            e.printStackTrace();

        }

        return result;

    }

下载

import android.util.Log;

import java.io.File;

import java.io.FileOutputStream;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.URL;

/**

 * Created by Administrator on 2016/7/20.

 */

public class DownloadPicture {

    //加载图片

    public static File getdFile(String path, String filepath) throws Exception {

        URL url = new URL(path);//

        HttpURLConnection connection = (HttpURLConnection) url.openConnection();//从网络获得链接

        connection.setRequestMethod("GET");//获得

        connection.setConnectTimeout(5000);//设置超时时间为5s

        connection.setRequestProperty("api-version", "1.0");

        if (connection.getResponseCode() == 200)//检测是否正常返回数据请求 详情参照http协议

        {

            InputStream is = connection.getInputStream();//获得输入流

            File file = new File(filepath);//新建一个file文件

            FileOutputStream fos = new FileOutputStream(file);//对应文件建立输出流

            byte[] buffer = new byte[1024];//新建缓存  用来存储 从网络读取数据 再写入文件

            int len = 0;

            while ((len = is.read(buffer)) != -1) {//当没有读到最后的时候

                fos.write(buffer, 0, len);//将缓存中的存储的文件流秀娥问file文件

            }

            fos.flush();//将缓存中的写入file

            fos.close();

            is.close();//将输入流 输出流关闭

            Log.e("========", "++++++file++++" + file);

            return file;

        }else{

            Log.e("======","-----getResponseCode----"+connection.getResponseCode());

            return null;

        }

    }

}

相关文章