实例介绍
【实例截图】
【核心代码】
下面是服务器端核心代码:
/// <summary> /// ProPicUpload 的摘要说明 /// </summary> public class ProPicUpload : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "text/plain"; context.Response.Charset = "utf-8"; HttpPostedFile file = context.Request.Files["Filedata"]; if (context.Request["type"] == "android") { if (file != null) { //上传图片方法就不贴了 //通过file就可以保存到服务器 context.Response.Write("/upload/" "," "文件名.jpg"); } } } public bool IsReusable { get { return false; } } }
下面是客户端代码
package com.spring.sky.image.upload.network; import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.util.Iterator; import java.util.Map; import java.util.UUID; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.HttpStatus; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.mime.MultipartEntity; import org.apache.http.entity.mime.content.FileBody; import org.apache.http.entity.mime.content.StringBody; import org.apache.http.impl.client.DefaultHttpClient; import com.spring.sky.image.upload.CustomMultipartEntity; import com.spring.sky.image.upload.CustomMultipartEntity.ProgressListener; import android.util.Log; /** * * 上传工具类 * * @author spring sky<br> * Email :vipa1888@163.com<br> * QQ: 840950105<br> * 支持上传文件和参数 */ public class UploadUtil { private static UploadUtil uploadUtil; private static final String BOUNDARY = UUID.randomUUID().toString(); // 边界标识 // 随机生成 private static final String PREFIX = "--"; private static final String LINE_END = "\r\n"; private static final String CONTENT_TYPE = "multipart/form-data"; // 内容类型 private UploadUtil() { } /** * 单例模式获取上传工具类 * * @return */ public static UploadUtil getInstance() { if (null == uploadUtil) { uploadUtil = new UploadUtil(); } return uploadUtil; } private static final String TAG = "UploadUtil"; private int readTimeOut = 10 * 1000; // 读取超时 private int connectTimeout = 10 * 1000; // 超时时间 /*** * 请求使用多长时间 */ private static int requestTime = 0; private static final String CHARSET = "utf-8"; // 设置编码 /*** * 上传成功 */ public static final int UPLOAD_SUCCESS_CODE = 1; /** * 文件不存在 */ public static final int UPLOAD_FILE_NOT_EXISTS_CODE = 2; /** * 服务器出错 */ public static final int UPLOAD_SERVER_ERROR_CODE = 3; protected static final int WHAT_TO_UPLOAD = 1; protected static final int WHAT_UPLOAD_DONE = 2; /** * android上传文件到服务器 * * @param filePath * 需要上传的文件的路径 * @param fileKey * 在网页上<input type=file name=xxx/> xxx就是这里的fileKey * @param RequestURL * 请求的URL */ public void uploadFile(String filePath, String fileKey, String RequestURL, Map<String, String> param) { if (filePath == null) { sendMessage(UPLOAD_FILE_NOT_EXISTS_CODE, "文件不存在"); return; } try { File file = new File(filePath); uploadFile(file, fileKey, RequestURL, param); } catch (Exception e) { sendMessage(UPLOAD_FILE_NOT_EXISTS_CODE, "文件不存在"); e.printStackTrace(); return; } } /** * android上传文件到服务器 * * @param file * 需要上传的文件 * @param fileKey * 在网页上<input type=file name=xxx/> xxx就是这里的fileKey * @param RequestURL * 请求的URL */ public void uploadFile(final File file, final String fileKey, final String RequestURL, final Map<String, String> param) { if (file == null || (!file.exists())) { sendMessage(UPLOAD_FILE_NOT_EXISTS_CODE, "文件不存在"); return; } Log.i(TAG, "请求的URL=" RequestURL); Log.i(TAG, "请求的fileName=" file.getName()); Log.i(TAG, "请求的fileKey=" fileKey); new Thread(new Runnable() { // 开启线程上传文件 @Override public void run() { toUploadFile(file, fileKey, RequestURL, param); } }).start(); } private void toUploadFile(File file, String fileKey, String RequestURL, Map<String, String> param) { String result = null; requestTime = 0; long requestTime = System.currentTimeMillis(); long responseTime = 0; try { URL url = new URL(RequestURL); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setReadTimeout(readTimeOut); conn.setConnectTimeout(connectTimeout); 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("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)"); conn.setRequestProperty("Content-Type", CONTENT_TYPE ";boundary=" BOUNDARY); // conn.setRequestProperty("Content-Type", // "application/x-www-form-urlencoded"); /** * 当文件不为空,把文件包装并且上传 */ DataOutputStream dos = new DataOutputStream(conn.getOutputStream()); StringBuffer sb = null; String params = ""; /*** * 以下是用于上传参数 */ if (param != null && param.size() > 0) { Iterator<String> it = param.keySet().iterator(); while (it.hasNext()) { sb = null; sb = new StringBuffer(); String key = it.next(); String value = param.get(key); sb.append(PREFIX).append(BOUNDARY).append(LINE_END); sb.append("Content-Disposition: form-data; name=\"") .append(key).append("\"").append(LINE_END) .append(LINE_END); sb.append(value).append(LINE_END); params = sb.toString(); Log.i(TAG, key "=" params "##"); dos.write(params.getBytes()); // dos.flush(); } } sb = null; params = null; sb = new StringBuffer(); /** * 这里重点注意: name里面的值为服务器端需要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(PREFIX).append(BOUNDARY).append(LINE_END); sb.append("Content-Disposition:form-data; name=\"" fileKey "\"; filename=\"" file.getName() "\"" LINE_END); sb.append("Content-Type:image/pjpeg" LINE_END); // 这里配置的Content-type很重要的 // ,用于服务器端辨别文件的类型的 sb.append(LINE_END); params = sb.toString(); sb = null; Log.i(TAG, file.getName() "=" params "##"); dos.write(params.getBytes()); /** 上传文件 */ InputStream is = new FileInputStream(file); onUploadProcessListener.initUpload((int) file.length()); byte[] bytes = new byte[1024]; int len = 0; int curLen = 0; while ((len = is.read(bytes)) != -1) { curLen = len; dos.write(bytes, 0, len); onUploadProcessListener.onUploadProcess(curLen); } is.close(); dos.write(LINE_END.getBytes()); byte[] end_data = (PREFIX BOUNDARY PREFIX LINE_END) .getBytes(); dos.write(end_data); dos.flush(); // // dos.write(tempOutputStream.toByteArray()); /** * 获取响应码 200=成功 当响应成功,获取响应的流 */ int res = conn.getResponseCode(); responseTime = System.currentTimeMillis(); this.requestTime = (int) ((responseTime - requestTime) / 1000); Log.e(TAG, "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); sendMessage(UPLOAD_SUCCESS_CODE, "上传结果:" result); return; } else { Log.e(TAG, "request error"); sendMessage(UPLOAD_SERVER_ERROR_CODE, "上传失败:code=" res); return; } } catch (MalformedURLException e) { sendMessage(UPLOAD_SERVER_ERROR_CODE, "上传失败:error=" e.getMessage()); e.printStackTrace(); return; } catch (IOException e) { sendMessage(UPLOAD_SERVER_ERROR_CODE, "上传失败:error=" e.getMessage()); e.printStackTrace(); return; } } /** * 发送上传结果 * * @param responseCode * @param responseMessage */ private void sendMessage(int responseCode, String responseMessage) { onUploadProcessListener.onUploadDone(responseCode, responseMessage); } /** * 下面是一个自定义的回调函数,用到回调上传文件是否完成 * * @author shimingzheng * */ public interface OnUploadProcessListener { /** * 上传响应 * * @param responseCode * @param message */ void onUploadDone(int responseCode, String message); /** * 上传中 * * @param uploadSize */ void onUploadProcess(int uploadSize); /** * 准备上传 * * @param fileSize */ void initUpload(int fileSize); } private static OnUploadProcessListener onUploadProcessListener; public void setOnUploadProcessListener( OnUploadProcessListener onUploadProcessListener) { this.onUploadProcessListener = onUploadProcessListener; } public int getReadTimeOut() { return readTimeOut; } public void setReadTimeOut(int readTimeOut) { this.readTimeOut = readTimeOut; } public int getConnectTimeout() { return connectTimeout; } public void setConnectTimeout(int connectTimeout) { this.connectTimeout = connectTimeout; } /** * 获取上传使用的时间 * * @return */ public static int getRequestTime() { return requestTime; } public static interface uploadProcessListener { } private static long totalSize = 0; /** * 提交参数里有文件的数据 * * @param url * 服务器地址 * @param param * 参数 * @return 服务器返回结果 * @throws Exception */ public String uploadSubmit(String url, Map<String, String> param, File file, String fileKey) throws Exception { HttpPost post = new HttpPost(url); // MultipartEntity entity = new MultipartEntity(); CustomMultipartEntity entity = new CustomMultipartEntity( new ProgressListener() { @Override public void transferred(long num) { onUploadProcessListener .onUploadProcess((int) ((num / (float)totalSize) * 100)); } }); if (param != null && !param.isEmpty()) { for (Map.Entry<String, String> entry : param.entrySet()) { if (entry.getValue() != null && entry.getValue().trim().length() > 0) { entity.addPart(entry.getKey(), new StringBody(entry.getValue())); } } } // 添加文件参数 if (file != null && file.exists()) { entity.addPart(fileKey, new FileBody(file)); } totalSize = entity.getContentLength(); post.setEntity(entity); HttpClient httpClient = new DefaultHttpClient(); HttpResponse response = httpClient.execute(post); int stateCode = response.getStatusLine().getStatusCode(); StringBuffer sb = new StringBuffer(); if (stateCode == HttpStatus.SC_OK) { HttpEntity result = response.getEntity(); if (result != null) { InputStream is = result.getContent(); BufferedReader br = new BufferedReader( new InputStreamReader(is)); String tempLine; while ((tempLine = br.readLine()) != null) { sb.append(tempLine); } } } post.abort(); return sb.toString(); } }
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