Spring boot RestTemplate post请求

最近遇到项目需要使用post请求，传的参数中包含map和字符串，在这里记录下

public boolean startPrinter(HashMap<String, Object> map, String templateName, String printerIp, Integer copy) {
        try {
            String stringMap = JSON.toJSONString(map);
            String url = "http://"+jasperIp+":8080/startPrinter";//访问地址
            Map<String, Object> params = new HashMap<>();
            params.put("map", stringMap);
            params.put("templateName", templateName);
            params.put("printerIp", printerIp);
            params.put("copy", copy);
            HttpHeaders headers = new HttpHeaders();
            MediaType type = MediaType.parseMediaType("application/json; charset=UTF-8");
            headers.setContentType(type);
            HttpEntity<Map<String, Object>> httpEntity = new HttpEntity<>(params, headers);
            SimpleClientHttpRequestFactory requestFactory = new SimpleClientHttpRequestFactory();
            requestFactory.setConnectTimeout(10000);
            requestFactory.setReadTimeout(10000);
            RestTemplate restTemplate = new RestTemplate(requestFactory);
            String re = restTemplate.postForObject(url, httpEntity, String.class);
            return re.equals("true");
        } catch (Exception e){
            log.error("请求接口异常："+ e.getMessage());
            return false;
        }
    }