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1、目錄結(jié)構(gòu)
2、各文件內(nèi)容
index.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>$Title$</title> </head> <body> <form action="/Servlet" method="post"> <input type="submit" value="提交"> </form> </body> </html>
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1"> <servlet> <servlet-name>Servlet</servlet-name> <servlet-class>web.servlet.Servlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>Servlet</servlet-name> <url-pattern>/Servlet</url-pattern> </servlet-mapping> </web-app>
Servlet.java
package web.servlet; 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 java.io.IOException; @WebServlet(name = "Servlet") public class Servlet extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("doPost()..."); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("doGet()..."); } }
正常運(yùn)行后運(yùn)行后,Server控制臺(tái)會(huì)出現(xiàn)輸出“doPost()...”字符
3、當(dāng)未配置web.xml時(shí),出現(xiàn)的錯(cuò)誤提示
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1"> </web-app>
解決方法:在web.xml中配置相關(guān)信息,或在Servlet.java注解中添加內(nèi)容:
@WebServlet(name = "Servlet",urlPatterns = "/Servlet")
4、配置web.xml文件但未覆寫doGet()和doPost()方法,或未覆寫相對(duì)應(yīng)的方法出現(xiàn)的錯(cuò)誤提示
package web.servlet; @WebServlet(name = "Servlet") public class Servlet extends HttpServlet { }
package web.servlet; 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 java.io.IOException; @WebServlet(name = "Servlet") public class Servlet extends HttpServlet { protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("doGet()..."); } }
以上這篇基于創(chuàng)建Web項(xiàng)目運(yùn)行時(shí)出錯(cuò)的解決方法就是小編分享給大家的全部?jī)?nèi)容了,希望能給大家一個(gè)參考,也希望大家多多支持億速云。
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