I deploy my project on my server and it works right on the index.jsp:
but when I click on 以游客身份访问, it shows 404:
I found that I can visit jsp file without error:
but when the page need .java file it shows 404.
Here are my project structure deploy on my server:
Servletvisitor.java:
package Controller;
import Model.Blog;
import Model.UserService;
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;
import java.util.List;
@WebServlet(name = "ServletVisitor", urlPatterns = "/ServletVisitor")
public class ServletVisitor extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
List<Blog> blogs = UserService.showBlog();
req.setAttribute("blogs", blogs);
req.getRequestDispatcher("visitor.jsp").forward(req, resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req, resp);
}
}
index.jsp
<%@ page import="java.util.List" %>
<%@ page import="java.util.Iterator" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>欢迎</title>
</head>
<body>
<div align="center">
<h1>登录</h1>
<%
List<String> info = (List<String>) request.getAttribute("info"); //得到结果
String s;
//若用户有登录操作，则信息不为空
if(info != null) {
Iterator<String> iterator = info.iterator();
while(iterator.hasNext()) {
s = iterator.next();
//若登录成功则跳转到首页
if (s.equals("登录成功")) {
response.sendRedirect("/ServletVIP");
}
//登录不成功提示错误
else {
%>
<%--显示错误--%>
<h4><%=s%></h4>
<%
}
}
}
%>
<form action="/ServletLogin" method="post">
账号：<input type="text" name="account"><br>
<br>
密码：<input type="password" name="password"><br>
<br>
<input type="submit" value="登录">
</form>
<a href="register.jsp">还不是会员？</a><br>
<br>
<a href="/ServletVisitor">以游客身份访问</a>
</div>
</body>
</html>
My project structure:
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_4_0.xsd"
version="4.0">
<context-param>
<param-name>JDBC_DRIVER</param-name>
<param-value>com.mysql.cj.jdbc.Driver</param-value>
</context-param>
<context-param>
<param-name>DB_URL</param-name>
<param-value>jdbc:mysql://localhost/account?serverTimezone=GMT%2B8&useSSL=false</param-value>
</context-param>
<context-param>
<param-name>USER</param-name>
<param-value>root</param-value>
</context-param>
<context-param>
<param-name>PASS</param-name>
<param-value>password</param-value>
</context-param>
<jsp-config>
<jsp-property-group>
<url-pattern>*.jsp</url-pattern>
<page-encoding>UTF-8</page-encoding>
<default-content-type>text/html</default-content-type>
</jsp-property-group>
</jsp-config>
The project works well on localhost.
I think the error is about the path, but I don't know how to solve it.
