直接撸代码
@PostMapping("/certificate") public String certificate(String verSummary) throws JsonProcessingException { String url = "http://10.xx.xxx.xx:xxxx/SignServer/Sign"; List list = new ArrayList(); list.add(verSummary); Map req = new HashMap(); req.put("VerSummary",list); String json = this.ObjectToJson(req); System.out.println("json is " + json); HttpHeaders headers = new HttpHeaders(); headers.set("Content-Type","application/json"); HttpEntity httpEntity = new HttpEntity(json,headers); ResponseEntity<Map> res = this.restTemplate.exchange(url, HttpMethod.POST, httpEntity, Map.class); //ResponseEntity<Map> res = restTemplate.postForEntity( url, httpEntity , Map.class ); Map cerResult = res.getBody(); System.out.println("cerResult "+cerResult); String resultCode = (String)cerResult.get("ResultCode"); return resultCode; }其中，object转json的实现如下：
private final static ObjectMapper mapper = new ObjectMapper(); public String ObjectToJson(Object o) throws JsonProcessingException { ObjectWriter ow = mapper.writer().withDefaultPrettyPrinter(); String json = ow.writeValueAsString(o); return json; }