HttpClient4.x 文件上传

演示

gradle项目

compile group: 'org.apache.httpcomponents', name: 'httpclient', version: '4.5.3'

maven项目

<dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.5.3</version> </dependency>

上传

HttpClient HTTP_CLIENT = HttpClients.createDefault(); HttpPost httpPost = new HttpPost("http://localhost/file/upload"); try { final MultipartEntityBuilder multipartEntity = MultipartEntityBuilder.create(); multipartEntity.setCharset(Charset.forName("utf-8")); multipartEntity.setMode(HttpMultipartMode.BROWSER_COMPATIBLE); //for (String[] nameValue : datas) {//普通data字段 // multipartEntity.addPart(nameValue[0], new StringBody(nameValue[1], ContentType.APPLICATION_JSON)); //} multipartEntity.addBinaryBody("file", file);//文件字段 httpPost.setEntity(multipartEntity.build()); //httpPost.setHeader("token", token);//设置请求头 String result = EntityUtils.toString(HTTP_CLIENT.execute(httpPost).getEntity()); } catch (IOException e) { e.printStackTrace(); }