restTemplate多文件请求

restTemplate多文件请求
重点注意：
请求的头 headers.setContentType(MediaType.MULTIPART_FORM_DATA);

List<MultipartFile> files = reqContractCreateBean.getFiles();
//获取临时文件目录
String tempDir = appConfigProperties.getTempDir();

// 创建临时文件
File storgePath = Paths.get(tempDir).toFile();
if (!storgePath.exists()) {
	storgePath.mkdirs();
}
//清除临时文件的内容
File[] subFile = storgePath.listFiles();
for (int i = 0; i < subFile.length; i++) {
	subFile[i].delete();
}

HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.MULTIPART_FORM_DATA);

MultiValueMap<String, Object> map = new LinkedMultiValueMap<String, Object>();
map.add("name", "影片A");
FileSystemResource resource = null;
for (int i = 0; i < files.size(); i++) {
	MultipartFile f = files.get(i);
	String originalFilename = f.getOriginalFilename();
	File dest = Paths.get(storgePath.getPath(), originalFilename).toFile();
	f.transferTo(dest);
	resource = new FileSystemResource(dest);
	// 读取目录下文件
	map.add("files", resource);
}
HttpEntity<MultiValueMap<String, Object>> request = new HttpEntity<MultiValueMap<String, Object>>(map, headers);

ResultBean response = restTemplate.postForObject(agentProperties.getBcos_contract_install(), request,
		ResultBean.class);

说明： for循环下 map.add(“files”, resource);不会覆盖

源码：