RestTemplate方式post、get请求实例

1、pom.xml引用spring-web

 <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-web</artifactId>
         <version>5.0.10.RELEASE</version>
  </dependency>

2、java代码层面

  i、入参包含其他入参，post请求，返回值是dto（单个）

  @Autowired
  RestTemplate restTemplate;

                        TreeMap<String, Object> mainMap = Maps.newTreeMap();

                        JSONObject queryJsonSearch = new JSONObject();
                        queryJsonSearch.put("a", a);
                        JSONObject reqDataJsonSearch = new JSONObject();
                        reqDataJsonSearch.put("b", b);
                        queryJsonSearch.put("reqData", reqDataJsonSearch);

                        String postUrl = url;
                        String objectInfo = "";

                        try {
                                objectInfo = restTemplate.postForObject(postUrl, queryJsonSearch, String.class);

                                String data = "";

                                if (!"".equals(objectInfo)) {
                                        JSONObject jsonObject = JSON.parseObject(objectInfo);
                                        String code = ParamBasicVolidation.paramConvertNull(jsonObject.getString("code"));

                                        if ("0".equals(code)) {
                                                data = ParamBasicVolidation.paramConvertNull(jsonObject.getString("data"));

                                                if (!"".equals(data)) {
                                                        mainMap = JSONObject.parseObject(data, TreeMap.class);
                                                        String c= ParamBasicVolidation.paramConvertNull(mainMap.get("c"));
                                                        String d= ParamBasicVolidation.paramConvertNull(mainMap.get("d"));            
                                                }
                                        }
                                }
                        } catch (Exception e) {
                             
                        }

ii、入参包含其他入参，get请求，返回值是dto（单个）

 String objectInfo = "";

  objectInfo = restTemplate.getForObject(amountUrl, String.class);

                                        if (!"".equals(objectInfo)) {
                                                JSONObject jsonObject = JSON.parseObject(objectInfo);
                                                String code = ParamBasicVolidation.paramConvertNull(jsonObject.getString("code"));

                                                if ("100000".equals(code)) {
                                                        String date = ParamBasicVolidation.paramConvertNull(jsonObject.getString("data"));
                                                }
                                        }

iii、入参包含其他入参，post请求，返回值是List<dto>（多个dto）

  JSONObject queryJsonSearch = new JSONObject();
   queryJsonSearch.put("a", a);
  JSONObject reqDataJsonSearch = new JSONObject();
  reqDataJsonSearch.put("b", b);
  queryJsonSearch.put("reqData", reqDataJsonSearch);

   String postUrl = url;
  String objectInfo = "";

 objectInfo = restTemplate.postForObject(postUrl, queryJsonSearch, String.class);
 

if (!"".equals(objectInfo)) {
                                JSONObject jsonObject = JSON.parseObject(objectInfo);
                                String code = ParamBasicVolidation.paramConvertNull(jsonObject.getString("code"));

                                if ("0".equals(code)) {
                                        data = ParamBasicVolidation.paramConvertNull(jsonObject.getString("data"));
                                        JSONArray jsonArray = JSONArray.parseArray(data);

                                        if (jsonArray.size() > 0) {
                                                for (int i = 0; i < jsonArray.size(); i++) {
                                                        JSONObject infoDetail = jsonArray.getJSONObject(i);
                                                        String c= ParamBasicVolidation.paramConvertNull(infoDetail.get("c"));
                                                        String d= ParamBasicVolidation.paramConvertNull(infoDetail.get("d"));
                                                }
                                        }
                                }
                        }
                }