package priv.lwx.javaex.servlet_demo.web.servletcontext; /*** 獲取MIME類型** @author liaowenxiong* @date 2022/1/12 15:34*/import javax.servlet.*; import javax.servlet.http.*; import javax.servlet.annotation.*; import java.io.File; import java.io.IOException;@WebServlet("/servlet_context_demo01") public class ServletContextDemo01 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 {File file = new File("druid.properties");String name = file.getName();System.out.println(name);ServletContext context = this.getServletContext();String mimeType = context.getMimeType(name);System.out.println(mimeType); // 結果為null，properties文件沒有對應的MIME類型String name1 = "a.jpeg";String mimeType1 = context.getMimeType(name1);System.out.println(mimeType1); // 結果為image/jpeg} }

總結

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