restTemplate 发送http post请求带有文件流、参数

String httpMethod = "";
RestTemplate restTemplate = new RestTemplate();
String args = "";
MultiValueMap paramMap = new LinkedMultiValueMap<>();
paramMap.add("args", args);
paramMap.add("sign", ""); File file=new File("D:\\5a658c98Nd0abcb82.jpg"); byte[] bytesArray = new byte[(int) file.length()]; FileInputStream fis = new FileInputStream(file); fis.read(bytesArray); //read file into bytes[] fis.close(); ByteArrayResource contentsAsResource = new ByteArrayResource(bytesArray) { @Override public String getFilename() { return "img"; } }; paramMap.add("img", contentsAsResource);
JSONObject json = restTemplate.postForObject(httpMethod, paramMap, JSONObject.class);
System.out.println("post json : " + json);