Please do not reject this question as I have gone through many related questions and couldn't find the specific problem I am trying to solve. Pardom me for any shortcomings in the post as I have only started to post questions. I am facing an issue with URL's submitting a form or navigating from one page to another causing error 404. I am using glassfish server 4.1.1. I have a welcome page containing a hyperlink/form at :
`http://localhost:8080/2_ReadingFormData`.
When I try to Navigate to another page by manually typing the url as follows it works :
`http://localhost:8080/2_ReadingFormData/showForm`
But when I try to navigate to the page using a hyperlink/form, the URL doesn't include my project directory resulting 404 error :
`http://localhost:8080/showForm`
I wasn't able to find the reason why this occurs. In some cases of form submission it seems to work fine. In this particular example, the form does work but the hyperlink doesn't because of the reason described above. What is the reason behind this odd behavior?
FormController.java
package spmvcform;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
@RequestMapping("/")
public class FormController {
@RequestMapping //or @RequestMapping("/")
public String showMainPage()
{
return "mainpage";
}
@RequestMapping("/showForm")
public String showForm()
{
return "myform";
}
@RequestMapping("/processForm")
public String processForm()
{
return "helloworld";
}
}
mainpage.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<h1>This is the main page</h1>
<a href="showForm">Next</a>
</body>
</html>
myform.jsp
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<h1>Form Page</h1><br/>
<form action="processForm" method="get">
<input type="text" name="uname"
placeholder="what's your name?"/>
<input type="submit" name="Next"/>
</form>
</body>
</html>
helloworld.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Hello World</title>
</head>
<body>
<h1>Student name : ${param.uname}</h1>
</body>
</html>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1" 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">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
</web-app>
dispatcher-servlet.xml
<?xml version='1.0' encoding='UTF-8' ?>
<!-- was: <?xml version="1.0" encoding="UTF-8"?> -->
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="index.htm">indexController</prop>
</props>
</property>
</bean>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/"
p:suffix=".jsp" />
<!--
The index controller.
-->
<bean name="indexController"
class="org.springframework.web.servlet.mvc.ParameterizableViewController"
p:viewName="index" />
</beans>
applicationContext.xml
<?xml version='1.0' encoding='UTF-8' ?>
<!-- was: <?xml version="1.0" encoding="UTF-8"?> -->
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc">
<!-- Add support for component scanning-->
<context:component-scan base-package="spmvcform"/>
<!-- Add support for conversion, formatting and validation support-->
<mvc:annotation-driven/>
</beans>
I am using netbeans 8.2 with Glassfish server 4.1.1.
This is happening because you are giving relative path instead of absolute path.so adding slash before showForm like <a href="/showForm">Next</a> should work fine.
OR
You can add context path like below.
<a href="${pageContext.request.contextPath}/showForm">Next</a>
OR
put context path in one variable and use it throughout the page like below.
// somewhere on the top of your JSP
<c:set var="contextPath" value="${pageContext.request.contextPath}"/>
...
<a href="${contextPath}/showForm">Next</a>