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這篇文章主要介紹Android如何實(shí)現(xiàn)多參數(shù)文件和數(shù)據(jù)上傳,文中介紹的非常詳細(xì),具有一定的參考價(jià)值,感興趣的小伙伴們一定要看完!
具體內(nèi)容如下
上代碼:
/** * 可傳入多張圖片和參數(shù) * * @param actionUrl * 發(fā)送地址 * @param params * 文本參數(shù) * @param files * 文件參數(shù) * @return * @throws IOException */ public static String mulpost(String actionUrl, Map<String, String> params, Map<String, File> files) throws IOException { String result = ""; String BOUNDARY = java.util.UUID.randomUUID().toString(); String PREFIX = "--", LINEND = "\r\n"; String MULTIPART_FROM_DATA = "multipart/form-data"; String CHARSET = "UTF-8"; URL uri = new URL(actionUrl); HttpURLConnection conn = (HttpURLConnection) uri.openConnection(); conn.setReadTimeout(5 * 1000); conn.setDoInput(true);// 允許輸入 conn.setDoOutput(true);// 允許輸出 conn.setUseCaches(false); conn.setRequestMethod("POST"); // Post方式 conn.setRequestProperty("connection", "keep-alive"); conn.setRequestProperty("Charsert", "UTF-8"); conn.setRequestProperty("Content-Type", MULTIPART_FROM_DATA + ";boundary=" + BOUNDARY); // 首先組拼文本類型的參數(shù) StringBuilder sb = new StringBuilder(); for (Map.Entry<String, String> entry : params.entrySet()) { sb.append(PREFIX); sb.append(BOUNDARY); sb.append(LINEND); sb.append("Content-Disposition: form-data; name=\"" + entry.getKey() + "\"" + LINEND); sb.append("Content-Type: text/plain; charset=" + CHARSET + LINEND); sb.append("Content-Transfer-Encoding: 8bit" + LINEND); sb.append(LINEND); sb.append(entry.getValue()); sb.append(LINEND); } DataOutputStream outStream = new DataOutputStream( conn.getOutputStream()); outStream.write(sb.toString().getBytes()); // 發(fā)送文件數(shù)據(jù) if (files != null) for (Map.Entry<String, File> file : files.entrySet()) { StringBuilder sb1 = new StringBuilder(); sb1.append(PREFIX); sb1.append(BOUNDARY); sb1.append(LINEND); sb1.append("Content-Disposition: form-data; name=\"file\"; filename=\"" + file.getKey() + "\"" + LINEND); sb1.append("Content-Type: application/octet-stream; charset=" + CHARSET + LINEND); sb1.append(LINEND); outStream.write(sb1.toString().getBytes()); InputStream is = new FileInputStream(file.getValue()); byte[] buffer = new byte[1024]; int len = 0; while ((len = is.read(buffer)) != -1) { outStream.write(buffer, 0, len); } is.close(); outStream.write(LINEND.getBytes()); } // 請(qǐng)求結(jié)束標(biāo)志 byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINEND).getBytes(); outStream.write(end_data); outStream.flush(); InputStream is = conn.getInputStream(); InputStreamReader isr = new InputStreamReader(is, "utf-8"); BufferedReader br = new BufferedReader(isr); result = br.readLine(); outStream.close(); conn.disconnect(); return result; }
方法就是這樣的。
使用時(shí)可封裝在自己的類里直接調(diào)用即可,記得加網(wǎng)絡(luò)訪問和讀取系統(tǒng)文件的權(quán)限哦。
<uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
由于上傳是耗時(shí)操作,必須得要弄在另一個(gè)線程中調(diào)用才可以。
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