一.上傳單個文件
//通過指定header和body來創建HttpEntity
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.MULTIPART_FORM_DATA);
MultiValueMap<String, Object> body = new LinkedMultiValueMap<>();
// FileSystemResource有多個構造返方法
body.add("file", new FileSystemResource(filePath));
HttpEntity<MultiValueMap<String, Object>> requestEntity = new HttpEntity<>(body, headers);
//調用restTemplate.postForEntity( )完成連接建立併發送文件到服務器
String serverUrl = "http://localhost:8082/springrest/fileserver/singlefileupload/";
RestTemplate restTemplate = new RestTemplate();
ResponseEntity<String> response = restTemplate.postForEntity(serverUrl, requestEntity, String.class);
二、上傳多個文件
MultiValueMap<String, Object> body = new LinkedMultiValueMap<>();
body.add("files", new FileSystemResource(filePath1));
body.add("files", new FileSystemResource(filePath2));
body.add("files", new FileSystemResource(filePath3));
HttpEntity<MultiValueMap<String, Object>> requestEntity
= new HttpEntity<>(body, headers);
String serverUrl = "http://localhost:8082/springrest/fileserver/multiplefileupload/";
RestTemplate restTemplate = new RestTemplate();
ResponseEntity<String> response = restTemplate.postForEntity(serverUrl, requestEntity, String.class);