Spring MVC Controller working but not creating the specified response URL ,It is creating the url from request mapping string - spring

Question

I am studying spring MVC based webapps. So I created a project in spring mvc and I have chosen eclipse IDE.Apache tomcat 8 server and jre1.8 the version of spring package is 4.2.5. In my project I created the login and that worked fine after login the I redirected the page to another jsp called 'branchinsert.jsp' that placed in an another folder (login.jsp and branchinsert.jsp are from different folders). In Branchinsert.jsp Spring MVC Controller is working but not create the specified response URL ,It is creating the url from request mapping string that means if I am giving the pattern like bellow mentioned,
#RequestMapping(value="/branchsubmitinsert.travel", method=RequestMethod.POST)
public ModelAndView submitBranchInsert(#ModelAttribute BranchModel branchModel){
ModelAndView modelAndView = new ModelAndView("/branch/branchinsert");
return modelAndView;
}
showing 404 error for the url /ProjectName/modules/branch/branchsubmitinsert.jsp
Actually the url i expected is /branch/branchinsert.jsp(this is what usually happens) but here created /branch/branchsubmitinsert.jsp url. why????
this is my code
web.xml
<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>CalicutTravels</display-name>
<servlet>
<servlet-name>spring-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet
</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>spring-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<listener><listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
ApplicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context = "http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.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.xsd">
<context:component-scan base-package="com.classes.controller">
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
</beans>
spring-dispatcher-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context = "http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.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.xsd">
<context:annotation-config />
<context:component-scan base-package="com.classes.controller">
</context:component-scan>
<mvc:annotation-driven/>
<mvc:resources mapping="/resources/**" location="/resources/" />
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/modules/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
<!-- declare beans -->
<bean id="userDaoImplementation"
class="com.classes.dao.login.UserDaoImplementation" />
<bean id="userServiceImplementation"
class="com.classes.service.login.UserServiceImplementation" />
<!-- declare datasource bean "jdbc:postgresql://hostname:port
/dbname","username", "password");-->
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="org.postgresql.Driver" />
<property name="url" value="jdbc:postgresql://localhost:5432
/db_enterpricer_travel" />
<property name="username" value="vishnu" />
<property name="password" value="root" />
</bean>
</beans>
branchinsert.jsp's form field
<form action='branchsubmitinsert.travel' id='brach_submit' method='post' >
<fieldset class="well the-fieldset">
<legend class="the-legend"> INSERT </legend>
<table>
<tr>
<th> Branch Name :</th>
<td> <input type="text" name='branchName' id='branchName' /></td>
</tr>
<tr>
<td colspan="2" align="right"><input type="button" class="btn btn-default" value='INSERT' onclick='return validateBranchInsert()'/></td>
</tr>
</table>
</fieldset>
</form>
The controller class BranchController.java
package com.classes.controller.branch;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.portlet.ModelAndView;
import com.classes.service.branch.BranchModel;
/**
* #author vishnu
*
*/
#Controller
#RequestMapping("/branch")
public class BranchController {
#RequestMapping(value="/branchinsert.travel", method=RequestMethod.GET)
public ModelAndView getBranchInsert(){
ModelAndView modelAndView = new ModelAndView("/branch/branchinsert");
return modelAndView;
}
#RequestMapping(value="/branchupdate.travel", method=RequestMethod.GET)
public ModelAndView getBranchUpdate(){
ModelAndView modelAndView = new ModelAndView("/branch/branchupdate");
return modelAndView;
}
#RequestMapping(value="/branchshow.travel", method=RequestMethod.GET)
public ModelAndView getBranchShow(){
ModelAndView modelAndView = new ModelAndView("/branch/branchshow");
return modelAndView;
}
#RequestMapping(value="/branchdelete.travel", method=RequestMethod.GET)
public ModelAndView getBranchDelete(){
ModelAndView modelAndView = new ModelAndView("/branch/branchdelete");
return modelAndView;
}
#RequestMapping(value="/branchsubmitinsert.travel",
method=RequestMethod.POST)
public ModelAndView submitBranchInsert(#ModelAttribute BranchModel
branchModel){
ModelAndView modelAndView = new ModelAndView("/branch/branchinsert");
modelAndView.addObject("branch",branchModel);
return modelAndView;
}
}

Answer 1

I changed the return type of method submitBranchInsert as String as follows
#RequestMapping(value="/branchsubmitinsert.travel", method=RequestMethod.POST)
public String submitBranchInsert(ModelMap model,#ModelAttribute BranchModel branchModel){
//ModelAndView modelAndView = new ModelAndView("/branch/branchinsert");
//modelAndView.addObject("branch",branchModel);
//return modelAndView;
model.addAttribute("branch", branchModel);
return "/branch/branchinsert";
}
now its ok but why i can't use ModelAndView here instead of Model in String ,
may be my sound dumb to the experts in Spring MVC.
I just want to know when should use ModelAndView instead of Model in String?
I don't want to ask this question as separately that is why I am asking this with my answer itself.
anybody can help me?

Answer 2

Since you mentioned modules folder in the prefix of viewResolver it is working like that..
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/modules/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
Which means return "branch/branchInsert" will find jsp in /modules/branch/branchInsert.jsp.
If you use just string to return means it's just an path from the jsp where you are sending the requset.So for that viewResolver wont add prefix folder.
But if you use ModelAndView the viewResolver will add the prefix and suffix.