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This article shows you how to get data by calling third-party interfaces in Java. The content is concise and easy to understand. It will definitely make your eyes shine. I hope you can gain something through the detailed introduction of this article.

1. First process url, because the interface is a Get request, it means that it cannot accept too many concatenation parameters, and can only be divided into multiple urls and put into the list.

//Add the segmented url to the list collection String URL = "http://www.gugo.com/open/getListByIds? ";public List urls(List ids) { List list = new ArrayList(); StringBuilder stringBuilder = new StringBuilder(URL); //50 int pointsDataLimit = 50;for (int i = 0; i

< ids.size(); i++) { pointsDataLimit--; stringBuilder.append("pids=").append(ids.get(i)).append("&"); String newUrl = stringBuilder.substring(0, stringBuilder.length() - 1);if (pointsDataLimit == 0 || i == ids.size() - 1) { list.add(newUrl); stringBuilder = new StringBuilder(URL); pointsDataLimit = 50; } }return list;} 2.利用上面那个工具类获取数据后利用(记得配置一下)RestTemplate请求数据，取出数据处理放入redis。 public void refreshCache() { List pids = projectMapper.getAllPids(); List urls = listUtil.urls(pids); HashMap redisMap = new HashMap(); for (String url : urls) { //由于那边接口返回的是响应体类，所以要ParameterizedTypeReference不然你的对象接收不了参数 ResponseEntity results = restTemplate.exchange(url, HttpMethod.POST, null, new ParameterizedTypeReference() {}); JsonBean strs = results.getBody(); List dtoList = strs.getData(); dtoList.forEach(map ->

{ redisMap.put("Pid_" + map.get("id"), map.get("totalPeople") + ""); }); } redisDao.multiSet(redisMap);} The above is how to get data by calling third-party interfaces in Java. Have you learned any knowledge or skills? If you want to learn more skills or enrich your knowledge reserves, please pay attention to the industry information channel.

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