package priv.lwx.javaex.servlet_demo.web.servletcontext; /*** 獲取文件在服務器主機的真實路徑** @author liaowenxiong* @date 2022/1/12 15:34*/import javax.servlet.ServletContext; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import java.io.IOException; import java.net.URL;@WebServlet("/servlet_context_demo02") public class ServletContextDemo02 extends HttpServlet {@Overrideprotected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {this.doPost(request, response);}@Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {ServletContext context = this.getServletContext();// 通過ServletContext對象獲取文件的真實路徑String realPath = context.getRealPath("/WEB-INF/classes/druid.properties");System.out.println(realPath); // /Users/liaowenxiong/Documents/IdeaProjects/java-exercises/out/artifacts/servlet_demo_war_exploded/WEB-INF/classes/druid.properties// 通過類加載器獲取文件的真實路徑URL url = ServletContextDemo02.class.getClassLoader().getResource("druid.properties");System.out.println(url);String path = url.getPath();System.out.println(path);} }

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