实现多图片上传加上多参数上传
Posted lingzsj
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---- 昨天的上传到接口没有考虑到图片的上传,现在改正以下喔,话不多说上代码....
@SuppressWarnings("rawtypes") public static String formUpload(String urlStr, Map<String, String> textMap, String [] fileMap,String contentType) { String res = ""; sun.net.www.protocol.http.HttpURLConnection conn = null; // boundary就是request头和上传文件内容的分隔符 String BOUNDARY = "---------------------------123821742118716"; try { URL url = new URL(urlStr); conn = (sun.net.www.protocol.http.HttpURLConnection) url.openConnection(); conn.setConnectTimeout(5000); conn.setReadTimeout(30000); conn.setDoOutput(true); conn.setDoInput(true); conn.setUseCaches(false); conn.setRequestMethod("POST"); conn.setRequestProperty("Connection", "Keep-Alive"); conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.6)"); conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY); OutputStream out = new DataOutputStream(conn.getOutputStream()); // text if (textMap != null) { StringBuffer strBuf = new StringBuffer(); Iterator iter = textMap.entrySet().iterator(); while (iter.hasNext()) { Map.Entry entry = (Map.Entry) iter.next(); String inputName = (String) entry.getKey(); String inputValue = (String) entry.getValue(); if (inputValue == null) { continue; } strBuf.append(" ").append("--").append(BOUNDARY) .append(" "); strBuf.append("Content-Disposition: form-data; name="" + inputName + "" "); strBuf.append(inputValue); } out.write(strBuf.toString().getBytes()); } // file if (fileMap != null) { for (int i = 0; i <fileMap.length ; i++) { File file = new File(fileMap[i]); String filename = file.getName(); //没有传入文件类型,同时根据文件获取不到类型,默认采用application/octet-stream contentType = new MimetypesFileTypeMap().getContentType(file); //contentType非空采用filename匹配默认的图片类型 if(!"".equals(contentType)){ if (filename.endsWith(".png")) { contentType = "image/png"; }else if (filename.endsWith(".jpg") || filename.endsWith(".jpeg") || filename.endsWith(".jpe")) { contentType = "image/jpeg"; }else if (filename.endsWith(".gif")) { contentType = "image/gif"; }else if (filename.endsWith(".ico")) { contentType = "image/image/x-icon"; } } if (contentType == null || "".equals(contentType)) { contentType = "application/octet-stream"; } StringBuffer strBuf = new StringBuffer(); strBuf.append(" ").append("--").append(BOUNDARY) .append(" "); strBuf.append("Content-Disposition: form-data; name="" + "pictures" + ""; filename="" + filename + "" "); strBuf.append("Content-Type:" + contentType + " "); out.write(strBuf.toString().getBytes()); DataInputStream in = new DataInputStream( new FileInputStream(file)); int bytes = 0; byte[] bufferOut = new byte[1024]; while ((bytes = in.read(bufferOut)) != -1) { out.write(bufferOut, 0, bytes); } in.close(); } } byte[] endData = (" --" + BOUNDARY + "-- ").getBytes(); out.write(endData); out.flush(); out.close(); // 读取返回数据 StringBuffer strBuf = new StringBuffer(); BufferedReader reader = new BufferedReader(new InputStreamReader( conn.getInputStream())); String line = null; while ((line = reader.readLine()) != null) { strBuf.append(line).append(" "); } res = strBuf.toString(); reader.close(); reader = null; } catch (Exception e) { System.out.println("发送POST请求出错。" + urlStr); e.printStackTrace(); } finally { if (conn != null) { conn.disconnect(); conn = null; } } return res; }
---- 举个应用下例子喔~~
public static void main(String[] args) throws Exception { String uri ="接口...."; Map<String, String> map = new HashMap<>(); map.put("key", "测试单号"); map.put("title", "测试任务"); //当前时间 map.put("createTime", TimeUtils.currentTime()); //当前时间往后延长num天数 map.put("limitTime", TimeUtils.plusDay(5)); map.put("reachId", "12568"); //调用百度地图api获取到的经纬度,为了方便测试直接传了 map.put("point", "POINT(11.11111 12.22222)"); map.put("desc", "测试任务"); map.put("content", "测试内容"); String[] file ={"F:\xx\141f74027edd0462867bfad0cb530e45.jpg","F:\xx\50097c4f7e180741919337ba1244ceb6.jpg","F:\xx\tfa.jpg"}; //上传的图片... String contentType="image/jpg"; String s1 = formUpload(uri, map, file,contentType); System.out.println(s1); }
ps:该方法是我本地数据测试成功的明天再具体测试下,发现问题会修改的,如果各位打来发现有啥问题可以告诉我下谢谢啦~~~
同时上面的方法还可以优化~比如boundary= ----可以优化为自定生成的uuid(String boundary = UUID.randomUUID().toString())
参考连接:https://blog.csdn.net/Icywind1/article/details/85628099
最后写的拉闸也别喷我哈QVQ
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