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下面这个网站提供免费的api调用服务,只需要在java代码中构造简易的请求即可返回所需要的天气数据,直接进入该网站注册即可,每个用户免费的调用额度是3000条
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contoller

package warren.femalepowersystem.Controller;  import com.fasterxml.jackson.databind.JsonNode;  
import org.springframework.beans.factory.annotation.Autowired;  
import org.springframework.web.bind.annotation.*;  import warren.femalepowersystem.R.R;  
import warren.femalepowersystem.Service.WeatherService;  /**  * <p>  *  前端控制器  * </p>  * * @author * @since 2025-04-13 */@RestController  
@RequestMapping("/weather")  
public class WeatherController {  @Autowired  private WeatherService weatherService;  /**  * 根据城市获取天气  * @param city  * @return  */    @GetMapping  public R<JsonNode> getWeather(@RequestParam String city) {  return R.success(weatherService.getWeatherByCity(city));  }  
}

service

• 由于返回的原始天气数据格式很乱,我这里使用JsonNode进行了格式化,使得数据格式更加美观

package warren.femalepowersystem.Service;  import com.fasterxml.jackson.databind.JsonNode;  
import com.fasterxml.jackson.databind.ObjectMapper;  
import com.fasterxml.jackson.databind.node.ObjectNode;  
import org.springframework.beans.factory.annotation.Value;  
import org.springframework.stereotype.Service;  
import org.springframework.web.client.RestTemplate;  @Service  
public class WeatherService {  //读取配置文件中的appid@Value("${weather.appid}")  String appid ;  //读取配置文件中的appsecret@Value("${weather.appsecret}")  String appsecret;  private final RestTemplate restTemplate = new RestTemplate();  // 建议使用单例模式管理 ObjectMapper    private final ObjectMapper objectMapper = new ObjectMapper();  public JsonNode getWeatherByCity(String city) {  String url = String.format("http://v1.yiketianqi.com/api?unescape=1&version=v91&appid=%s&appsecret=%s&city=%s", appid, appsecret, city);  try {  // 获取原始 JSON 数据（外层是一个 JSON 对象，但 "data" 字段依然是一个字符串）  String response = restTemplate.getForObject(url, String.class);  // 将外层 JSON 字符串转换为 JsonNode            JsonNode rootNode = objectMapper.readTree(response);  // 检查 "data" 字段是否为字符串且内容不为空  if (rootNode.has("data") && rootNode.get("data").isTextual()) {  String dataString = rootNode.get("data").asText();  // 再次解析 "data" 字段，使其成为一个 JSON 对象  JsonNode dataNode = objectMapper.readTree(dataString);  // 将解析后的 dataNode 设置回 rootNode 中，需要强制转换为 ObjectNode                if (rootNode instanceof ObjectNode) {  ((ObjectNode) rootNode).set("data", dataNode);  }  }  // 返回的 JsonNode 经过 Jackson 自动转换为格式化后的 JSON 字符串（前提是你已经在配置中启用了 Pretty Print，  // 或者调用 writerWithDefaultPrettyPrinter() 进行格式化）  return rootNode;  } catch (Exception e) {  // 出现异常时，输出日志并返回原始内容，以免影响程序继续执行  e.printStackTrace();  return objectMapper.createObjectNode().put("error", "数据处理异常");  }  }  
}

返回示例

{"code": 1,"msg": null,"data": {"cityid": "101031100","city": "滨海新区","cityEn": "binhaixinqu","country": "中国","countryEn": "China","update_time": "2025-04-13 13:22:12","data": [{"day": "13日（星期日）","date": "2025-04-13","week": "星期日","wea": "多云","wea_img": "yun","wea_day": "多云","wea_day_img": "yun","wea_night": "多云","wea_night_img": "yun","tem": "12.9","tem1": "14","tem2": "9","humidity": "15%","visibility": "30km","pressure": "998","win": ["西北风","西北风"],"win_speed": "5-6级","win_meter": "36km/h","sunrise": "05:35","sunset": "18:44","air": "86","air_level": "良","air_tips": "","phrase": "多云时有风","narrative": "少云有大风。 最高 13°C。 西北偏北 风 40 到 55 每 km / h 。","moonrise": "19:09","moonset": "05:26","moonPhrase": "满月","rain": "6","uvIndex": "6","uvDescription": "强","rain_pcpn": "0.0","alarm": []},{"day": "14日（星期一）","date": "2025-04-14","week": "星期一","wea": "多云转晴","wea_img": "yun","wea_day": "多云","wea_day_img": "yun","wea_night": "晴","wea_night_img": "qing","tem": "20","tem1": "20","tem2": "10","humidity": "36%","visibility": "","pressure": "","win": ["西北风","西南风"],"win_speed": "4-5级转<3级","win_meter": "","sunrise": "05:33","sunset": "18:45","air": "53","air_level": "良","air_tips": "","phrase": "多云时有风","narrative": "少云有大风。 最高 20°C。 西北偏北 风 30 到 50 每 km / h 。","moonrise": "20:10","moonset": "05:48","moonPhrase": "亏凸月","rain": "2","uvIndex": "7","uvDescription": "强","rain_pcpn": "0.0"},{"day": "15日（星期二）","date": "2025-04-15","week": "星期二","wea": "晴","wea_img": "qing","wea_day": "晴","wea_day_img": "qing","wea_night": "晴","wea_night_img": "qing","tem": "28","tem1": "28","tem2": "15","humidity": "44%","visibility": "","pressure": "","win": ["西南风","东北风"],"win_speed": "3-4级转4-5级","win_meter": "","sunrise": "05:32","sunset": "18:46","air": "62","air_level": "良","air_tips": "","phrase": "大部地区晴朗","narrative": "大部晴朗。 最高 22°C。 西 风转向为 南 风 15 到 30 每 km / h 。","moonrise": "21:12","moonset": "06:13","moonPhrase": "亏凸月","rain": "1","uvIndex": "7","uvDescription": "强","rain_pcpn": "0.0"},{"day": "16日（星期三）","date": "2025-04-16","week": "星期三","wea": "多云转晴","wea_img": "yun","wea_day": "多云","wea_day_img": "yun","wea_night": "晴","wea_night_img": "qing","tem": "21","tem1": "21","tem2": "10","humidity": "59%","visibility": "","pressure": "","win": ["东北风","东北风"],"win_speed": "4-5级","win_meter": "","sunrise": "05:30","sunset": "18:46","air": "62","air_level": "良","air_tips": "","phrase": "局部多云","narrative": "少云。 最高 17°C。 东 风 15 到 30 每 km / h 。","moonrise": "22:14","moonset": "06:44","moonPhrase": "亏凸月","rain": "2","uvIndex": "7","uvDescription": "强","rain_pcpn": "1.0"},{"day": "17日（星期四）","date": "2025-04-17","week": "星期四","wea": "晴","wea_img": "qing","wea_day": "晴","wea_day_img": "qing","wea_night": "晴","wea_night_img": "qing","tem": "17","tem1": "17","tem2": "10","humidity": "66%","visibility": "","pressure": "","win": ["西北风","东北风"],"win_speed": "3-4级","win_meter": "","sunrise": "05:29","sunset": "18:47","air": "61","air_level": "良","air_tips": "","phrase": "局部多云","narrative": "少云。 最高 16°C。 东 风 10 到 15 每 km / h 。","moonrise": "23:15","moonset": "07:21","moonPhrase": "亏凸月","rain": "17","uvIndex": "6","uvDescription": "强","rain_pcpn": "0.0"},{"day": "18日（星期五）","date": "2025-04-18","week": "星期五","wea": "多云转阴","wea_img": "yun","wea_day": "多云","wea_day_img": "yun","wea_night": "阴","wea_night_img": "yin","tem": "17","tem1": "17","tem2": "10","humidity": "67%","visibility": "","pressure": "","win": ["南风","南风"],"win_speed": "3-4级转<3级","win_meter": "","sunrise": "05:28","sunset": "18:48","air": "47","air_level": "优","air_tips": "","phrase": "局部多云","narrative": "少云。 最高 17°C。 东 风 15 到 30 每 km / h 。","moonrise": "","moonset": "08:06","moonPhrase": "亏凸月","rain": "24","uvIndex": "6","uvDescription": "强","rain_pcpn": "0.0"},{"day": "19日（星期六）","date": "2025-04-19","week": "星期六","wea": "晴","wea_img": "qing","wea_day": "晴","wea_day_img": "qing","wea_night": "晴","wea_night_img": "qing","tem": "16","tem1": "16","tem2": "13","humidity": "64%","visibility": "","pressure": "","win": ["无持续风向","无持续风向"],"win_speed": "<3级","win_meter": "","sunrise": "05:26","sunset": "18:49","air": "57","air_level": "良","air_tips": "","phrase": "局部多云","narrative": "少云。 最高 17°C。 西北 风转向为 东南 风 15 到 25 每 km / h 。","moonrise": "00:11","moonset": "08:59","moonPhrase": "亏凸月","rain": "24","uvIndex": "7","uvDescription": "强","rain_pcpn": "0.0"}],"nums": 0,"aqi": {"update_time": "13:09","cityid": "101031100","city": "","cityEn": "","country": "","countryEn": "","air": "40","air_level": "优","air_tips": "各类人群可多参加户外活动，多呼吸一下清新的空气。","pm25": "16","pm25_desc": "优","pm10": "40","pm10_desc": "优","o3": "92","o3_desc": "","no2": "4","no2_desc": "","so2": "4","so2_desc": "","co": "0.4","co_desc": "","kouzhao": "不用佩戴口罩","yundong": "适宜运动","waichu": "适宜外出","kaichuang": "适宜开窗","jinghuaqi": "不需要打开"}},"map": {}}