Android原生HttpURLConnection上传图片方案

创建上传方法

object FormUploader {private val BOUNDARY = "Boundary-" + System.currentTimeMillis()private const val LINE_FEED = "\r\n"@Throws(IOException::class)fun uploadImage(url: String, imageFile: File, params: MutableMap<String?, String?>): String {val connection = URL(url).openConnection() as HttpURLConnectionconnection.setRequestMethod("POST")connection.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY)connection.setDoOutput(true)connection.getOutputStream().use { outputStream ->DataOutputStream(outputStream).use { writer ->// 写入文本参数for (entry in params.entries) {writer.writeBytes("--" + BOUNDARY + LINE_FEED)writer.writeBytes("Content-Disposition: form-data; name=\"" + entry.key + "\"" + LINE_FEED)writer.writeBytes(LINE_FEED)writer.writeBytes(entry.value + LINE_FEED)}// 写入文件数据writer.writeBytes("--" + BOUNDARY + LINE_FEED)writer.writeBytes("Content-Disposition: form-data; name=\"file\"; filename=\"" + imageFile.getName() + "\"" + LINE_FEED)writer.writeBytes("Content-Type: image/*" + LINE_FEED)writer.writeBytes(LINE_FEED)Files.copy(imageFile.toPath(), outputStream)writer.writeBytes(LINE_FEED)writer.writeBytes("--" + BOUNDARY + "--" + LINE_FEED)}}// 处理响应return readResponse(connection)}@Throws(IOException::class)private fun readResponse(connection: HttpURLConnection): String {BufferedReader(InputStreamReader(connection.getInputStream())).use { reader ->val response = StringBuilder()var line: String?while ((reader.readLine().also { line = it }) != null) {response.append(line)}return response.toString()}}

调用上传图片方法

 viewModelScope.launch(Dispatchers.IO) {LogUtils.w("开始上传了……………………")val map = mutableMapOf<String?, String?>()map.put("appKey", "123456")map.put("token", "eyJhbGciOiJIUzUxMiJ9.eyJzdWIiOiIxNzg3Mzg0NTA4OSIsImxvZ2luX3VzZXJfa2V5IjoiZjFkMGRkODEtNzg2ZC00YzE1LWE4ZmYtYmQxZWM1Njk2M2I5")map.put("timestamp", "2025-08-26 17:01:15")map.put("ver", "1.0")map.put("sign", "0ecbff7239c7650b75637522683ec7d")val result = FormUploader.uploadImage("https://dms.t.hxqcgf.com/gatewayApi/sign/common/commonDeal/upload",intent.file,map)LogUtils.w("上传完成结果：$result")