umount
。要卸载一个名为 /mnt/mydrive
的挂载点,可以使用以下命令:,,``bash,sudo umount /mnt/mydrive,
``bash,sudo apt-get remove --purge mongodb-org*,sudo apt-get autoremove,sudo rm -rf /var/log/mongodb,sudo rm -rf /var/lib/mongodb,
``java,import java.io.BufferedReader;,import java.io.InputStreamReader;,import java.net.HttpURLConnection;,import java.net.URL;,import org.json.JSONObject;,,public class JsonFetcher {, public JSONObject fetchJsonFromUrl(String urlString) throws Exception {, URL url = new URL(urlString);, HttpURLConnection connection = (HttpURLConnection) url.openConnection();, connection.setRequestMethod("GET");, BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));, StringBuilder response = new StringBuilder();, String line;, while ((line = reader.readLine()) != null) {, response.append(line);, }, reader.close();, return new JSONObject(response.toString());, },},
`,,这段代码创建了一个名为
JsonFetcher的类,其中包含一个方法
fetchJsonFromUrl`,该方法接受一个URL字符串作为参数,并返回解析后的JSON对象。Powered By Z-BlogPHP 1.7.3