首先加載Jsoup庫：

第一步：下載Jsoup 庫下載地址

（學(xué)習(xí)視頻分享：java教學(xué)視頻）

下載核心庫即可

第二步：

在項目下面新建文件夾命名如下，將下載好的 jar 包拖動到該文件中

第三步：

右鍵 jar 包選擇 Build Path——>Add to…

若在 Referenced Libraries出現(xiàn) 相對應(yīng)的 jar 包，則加載成功

實現(xiàn)效果：

實現(xiàn)代碼：

import java.io.IOException;
import java.net.URL;
import java.util.Scanner;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

public class dataGet {
	private static Scanner in;

	public static void main(String[] args) throws IOException {
		in = new Scanner(System.in);
		System.out.println("請輸入想要查詢的省會城市天氣：");
		String City = in.nextLine();

		Wea(City);// 省會城市未來七天天氣
	}

	public static void Wea(String City) throws IOException {

		String[] Cities = { "蘭州", "101160101", "西寧", "101150101", "西安", "101110101", "鄭州", "101180101", "濟南",
				"101120101", "太原", "101100101", "合肥", "101220101", "長沙", "101250101", "武漢", "101200101", "南京",
				"101190101", "貴陽", "101260101", "成都", "101270101", "昆明", "101290101", "臺北", "101340101", "長春",
				"101060101", "沈陽", "101070101", "福州", "101230101", "杭州", "101210101", "南昌", "101240101", "廣州",
				"101280101", "海口", "101310101", "哈爾濱", "101050101", "石家莊", "101090101", };//對應(yīng)城市編碼，參照 中國天氣網(wǎng)
        Boolean tem=false;//判斷是否為省會城市
		String keyword = new String();
		for (int i = 0; i < 46; i += 2) {
			if (Cities[i].equals(City)) {
				keyword = Cities[i + 1];
				tem=true;
				break;
			}
		}
		if (!tem) {
			System.out.println("查無此城！");
			return;
		}
		String url = "http://www.weather.com.cn/weather/" + keyword + ".shtml";
		Document document = Jsoup.parse(new URL(url), 3000);

		// 天氣獲取

		Element element = document.getElementById("7d");
		Elements elements = element.getElementsByTag("li");
		for (Element el : elements) {

			Elements date = el.getElementsByTag("h1");
			String Date = City + "：" + date;
			String weather = el.getElementsByClass("wea").eq(0).text();
			String temperature = el.getElementsByClass("tem").eq(0).text();

			String Weather = Date + weather + temperature;
			if (Weather.length() > 5)
				System.out.println(Weather);

		}
	}
}

相關(guān)推薦：java入門教程

以上是java利用Jsoup庫爬取天氣的詳細內(nèi)容。更多信息請關(guān)注PHP中文網(wǎng)其他相關(guān)文章！