1、目录结构
2、各文件内容
index.jsp
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<%@ 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
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<?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
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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()..."); }} |
正常运行后运行后，server控制台会出现输出“dopost()...”字符
3、当未配置web.xml时，出现的错误提示
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<?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> |
解决方法：在web.xml中配置相关信息，或在servlet.java注解中添加内容：
@webservlet(name = "servlet",urlpatterns = "/servlet")
4、配置web.xml文件但未覆写doget()和dopost()方法，或未覆写相对应的方法出现的错误提示
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package web.servlet;@webservlet(name = "servlet")public class servlet extends httpservlet { } |
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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()..."); }} |
以上这篇基于创建web项目运行时出错的解决方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持服务器之家。
原文链接：http://www.cnblogs.com/gdwkong/archive/2017/08/29/7442697.html
