初學 Java Web(四) ServletConfig介面獲取Servlet初始化引數
阿新 • • 發佈:2019-01-22
通過重寫public void init(ServletConfig config)函式,實現獲取Servlet初始化的引數,並從控制檯輸出。
Servlet1.java
import java.io.IOException; import javax.servlet.ServletConfig; import javax.servlet.ServletException; import javax.servlet.annotation.WebInitParam; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * Servlet implementation class Servlet1 */ @WebServlet(name = "/Servlet1", urlPatterns = { "/Servlet1" }, initParams = { @WebInitParam(name = "name", value = "guosiqi"), }) public class Servlet1 extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public Servlet1() { super(); // TODO Auto-generated constructor stub } public void init(ServletConfig config) { String name1 = config.getInitParameter("name"); System.out.println(name1); protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse * response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub doGet(request, response); } }