404 error on a simple spring mvc aplication - spring

Question

Project Folder structureI have gone through most of the question on this site related to 404 resource not found error on Sring mvc application. I tried all solutions and still ended up with no resolution for over two days. I am new to spring MVC and tried out a sample application from the link
Simple Spring MVC app
My code is exactly as mentioned on the site above. But no matter what change I make, still get a 404 error.
Here's my web.xml section
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>abc</display-name>
<welcome-file-list>
<welcome-file>/</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>sdnext</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name><param-value>/WEB-INF/config/sdnext-servlet.xml</param-value></init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>sdnext</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
The controller file,
EmployeeController.java
#Controller
public class EmployeeController {
#RequestMapping(value = "/employee", method = RequestMethod.GET)
public ModelAndView employee() {
return new ModelAndView("employeeForm", "command", new Employee());
}
#RequestMapping(value = "/addEmployee", method = RequestMethod.POST)
public String addEmployee(#ModelAttribute("SpringWeb")Employee employee, ModelMap model) {
model.addAttribute("name", employee.getName());
model.addAttribute("age", employee.getAge());
model.addAttribute("empId", employee.getEmpId());
model.addAttribute("salary", employee.getSalary());
return "employeeDetail";
}
}
where Employee is my POJO class with setter and getter methods.
Here is my employeeForm.jsp
<form:form action="/addEmployee" method="POST">
<table><tbody>
<tr> <td><form:label path="empId">Employee :</form:label></td> <td><form:input path="empId"></form:input></td> </tr>
<tr> <td><form:label path="name">EmployeeName:/form:label></form:label></td> <td><form:input path="name"></form:input></td> </tr>
<tr> <td><form:label path="age">Employee Age:</form:label></td> <td><form:input path="age"></form:input></td> </tr>
<tr> <td><form:label path="salary">Employee Salary:</form:label></td> <td><form:input path="salary"></form:input></td> </tr>
<tr> <td colspan="2"><input type="submit" value="Submit"/> </td> </tr>
</tbody></table>
</form:form>
here is my sdnext-servlet.xml
<context:component-scan base-package="com.dineshonjava.emp.controller">
</context:component-scan>
<context:annotation-config/>
<bean
class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="viewResolver">
<property name="prefix" value="/WEB-INF/views/"></property>
<property name="suffix" value=".jsp"></property>

Answer 1

You are doing a fundamental mistake. Say your project name is bunbub-proj, so the url to access is localhost:8080/bunbub-proj. When you POST to /addEmployee, you are actually hitting localhost:8080/addEmployee instead of localhost:8080/bunbub-proj/addEmployee
The fix is to simply append a . to all of your links/urls. E.g. <form:form action="./addEmployee" method="POST">
Note: Browser considers localhost:8080 as the base url or the host
url.