<?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/j2ee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" id="WebApp_ID"
version="2.4">
<servlet>
<servlet-name>welcome</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>welcome</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
index.jsp
<html>
<body>
<form action="add">
<input type="text" name="one"/><br>
<input type="text" name="two"/><br>
<input type="submit"/>
</form>
</body>
</html>
welcome-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"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="com.ashish.springMVC" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
controller
package com.ashish.springMVC;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
#Controller
public class Java4sController {
#RequestMapping("/*")
public ModelAndView helloWorld() {
System.out.println("hello....");
String message = "Welcome to Java4s.com Spring MVC 3.2.x Sessions";
message += "<br>You Did it....!";
return new ModelAndView("welcomePage.jsp", "welcomeMessage", message);
}//ModelAndView closed
}
welcomePage
<html>
<body>
<font face="verdana" size="2">
${welcomeMessage}
</font>
</body>
</html>
I want to run this but the code is accessing DispatcherServlet, behaving like JSP.
I tried executing this but it gives 404- no resource /add found error. Please suggests some edit to make it run correctly.
The way you about it is to analyze the problem scenario and try to minimize the problem area
First check if the request is reaching the controller.
if the request is not reaching the controller then you need to figure out what could be the reason like is the welcome-servlet.xml placed in the correct location
If the request is reaching the controller then check if there is something going wrong inside the helloWorld() for things like you returning welcomePage.jsp in
new ModelAndView("welcomePage.jsp", "welcomeMessage", message); which should be new ModelAndView("welcomePage", "welcomeMessage", message); as the internalResourceViewResolver just needs the name.
Related
I am trying to get started with Spring MVC & Tomcat, however I don't seem to be able to create single handler to render a minimalistic page.
The following files have been created:
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="springapp" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd
http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<servlet-name>springapp</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/springapp-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springapp</servlet-name>
<url-pattern>*.jsp</url-pattern>
</servlet-mapping>
<display-name>Spring MVC Framework Test</display-name>
</web-app>
springapp-servlet.xml
<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/cache"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:cache="http://www.springframework.org/schema/c"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd">
<!--<mvc:annotation-driven />-->
<context:component-scan base-package="springapp.web.*"/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/"/>
<property name="suffix" value=".jsp"/>
</bean>
<bean name="/hello.jsp" class="springapp.web.HelloController"/>
</beans>
hello.jsp
<%# page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>JSP Title</title>
</head>
<body>
${message}
</body>
</html>
HelloController.java
package springapp.web;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
#Controller
public class HelloController {
#RequestMapping(value="/hello", method=RequestMethod.GET)
public String printHello(ModelMap model) {
model.addAttribute("message", "Hello Spring MVC Framework!");
return "hello";
}
}
Folder structure:
My attempts at finding the handler:
16-Aug-2016 16:31:18.867 WARNING [http-nio-8080-exec-8] org.springframework.web.servlet.PageNotFound.noHandlerFound No mapping found for HTTP request with URI [/springapp/hello.jsp] in DispatcherServlet with name 'springapp'
16-Aug-2016 16:31:22.991 WARNING [http-nio-8080-exec-9] org.springframework.web.servlet.PageNotFound.noHandlerFound No mapping found for HTTP request with URI [/springapp/web/hello.jsp] in DispatcherServlet with name 'springapp'
16-Aug-2016 16:31:23.023 WARNING [http-nio-8080-exec-10] org.springframework.web.servlet.PageNotFound.noHandlerFound No mapping found for HTTP request with URI [/springapp/web/hello.jsp] in DispatcherServlet with name 'springapp'
Can someone please tell me what I am doing wrong?
Your code should be like this :
Also you should run it using /springapp/hello instead of /springapp/hello.jsp
Controller :
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.ui.ModelMap;
#Controller
#RequestMapping("/hello")
public class HelloController{
#RequestMapping(method = RequestMethod.GET)
public String printHello(ModelMap model) {
model.addAttribute("message", "Hello Spring MVC Framework!");
return "hello";
}
}
web.xml
<web-app id="WebApp_ID" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Spring MVC Application</display-name>
<servlet>
<servlet-name>springapp</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springapp</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
HelloWeb-servlet.xml
<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"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="springapp.web" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
your jsp
<%# page contentType="text/html; charset=UTF-8" %>
<html>
<head>
<title>Hello World</title>
</head>
<body>
<h2>${message}</h2>
</body>
</html>
As I can see your folder structure and the springapp-servlet.xml, I think you have to put hello.jsp file inside of WEB-INF folder because it could be the reason why can't find the page (Maybe show this type of error 404). According with springapp-servlet.xml you are indicating your jsp file should be inside WEB-INF folder.
This is the error message:-
This is my project structure:-
Following is my code:-
HelloController.java
package com.home.pack;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.ui.ModelMap;
#Controller
#RequestMapping("/hello")
public class HelloController{
#RequestMapping(method = RequestMethod.GET)
public String printHello(ModelMap model) {
model.addAttribute("message", "Hello Spring MVC Framework!");
return "hello";
}
}
web.xml
<web-app id="WebApp_ID" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Spring MVC Application</display-name>
<servlet>
<servlet-name>HelloWeb</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>HelloWeb</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
HelloWeb-servlet.xml
<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"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="com.home.pack" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
hello.jsp
<%# page contentType="text/html; charset=UTF-8" %>
<html>
<head>
<title>Hello World</title>
</head>
<body>
<h2>${message}</h2>
</body>
</html>
I am following this tutorial -> http://www.tutorialspoint.com/spring/spring_mvc_hello_world_example.htm but I am not able to get it to work. It seems that I am missing something here and would really appreciate if anybody points that out. Thanks.
You are trying to show the page "hello"? Spring probably see it as the controller since you did #RequestMapping("/hello")... So I guess here you're trying to show the controller as a page, that will surely show 404 error.
Try to change your method as fallow:
#RequestMapping(value = "/hello", method = RequestMethod.GET)
public String printHello(ModelMap model) {
model.addAttribute("message", "Hello Spring MVC Framework!");
return "hello";
}
And remove the request mapping on the controller
I guess it would work better...
Or let the request mapping on your controller and change your request mapping of the method for something else and acces it by adding .../hello/yourMethodValue
i have created a war file and kept it inside webapps directory in tomcat and starting the tomcat but when i am hitting http://localhost:8181/HelloWeb/hello i am getting 404 error. i am new to spring mvc any help will be appreciated. Below are my files (doing the example given in http://www.tutorialspoint.com/spring/spring_mvc_hello_world_example.htm.
HelloController.java
package dummyPackageOne;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
#Controller
#RequestMapping("/hello")
public class HelloController {
#RequestMapping(method=RequestMethod.GET)
public String printHello(ModelMap modelMap){
modelMap.addAttribute("message", "this is the message");
return "hello";
}
}
this is my hello.jsp
<%# page contentType="text/html; charset=UTF-8" %>
<html>
<head>
<title>Hello World</title>
</head>
<body>
<h2>${message}</h2>
</body>
</html>
HelloWeb-Servlet.xml
<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"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="dummyPackageOne" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
web.xml
<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 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>springTest</display-name>
<servlet>
<servlet-name>HelloWeb</servlet-name>
<servlet-class> org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>HelloWeb</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
Try adding <mvc:annotation-driven> after your <context:component-scan base-package="dummyPackageOne" />. This is required to register HandlerMapping and HandlerAdapter.
Also make sure your war/exploded war name matches your web context.
I've created a basic Spring MVC web app with Maven. However, I've been struggling with getting constant 404 errors when I'm accessing the /login URL.
The /login URL should be mapped to the AuthController servlet and the createLoginForm() method, but unfortunately it fails and I'm ending up with a 404 error.
I'm trying to figure out what is issue that is causing 404 errors and why the /login URL cannot be mapped to the servlet.
Is the problem located in bad configuration of the web.xml or spring-dispatcher-servlet.xml files that prevent the URL to be mapped?
When I'm accessing the / URL, then the index.jsp file is mapped and it's is working fine
The login.jsp file is put outside the WEB-INF directory, in the webapp one as well as the index.jsp file.
Thanks in advance.AuthController.java
package com.github.wjoz.springmvcreview.auth;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
#Controller
public class AuthController {
#RequestMapping(value="/login", method=RequestMethod.GET)
public ModelAndView createLoginForm() {
ModelAndView model = new ModelAndView("login");
return model;
}
}
web.xml
<?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>springmvcreview</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<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>
</web-app>
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"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.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">
<mvc:default-servlet-handler/>
<context:component-scan base-package="main.java.com.github.wjoz.springmvcreview.auth" />
<mvc:annotation-driven />
<!-- Tells the location of the view in the project -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver" >
<property name="prefix">
<value>/WEB-INF/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
</beans>
login.jsp
<%# page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE>
<html>
<head>
<title>Welcome to our application. Sign in.</title>
</head>
<body>
<form action="/springmvcreview/login" method="post">
<div>
<label for="username">Username</label>
<input type="text" name="username" id="username">
<label for="password">Password</label>
<input type="password" name="password" id="password">
<button type="submit">Sign in</button>
</div>
</form>
</body>
</html>
This is in addition to Shazin's answer
First, put your JSP files inside WEB-INF. There is no reason to have them outside of it, since you're deliberately breaking your view rendering functionality.
Second,
<servlet-mapping>
<servlet-name>spring-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
means that the URL www.somedomain.com/ will load the index page, and all other URLs will start with that. However, your form
<form action="/springmvcreview/login" method="post">
is hitting the URL www.somedomain.com/springmvcreview/login. This does not match up with the controller URL mapping
#RequestMapping(value="/login", method=RequestMethod.GET)
public ModelAndView createLoginForm() {
does not contain a mapping for the form action. So either remove /springmvcreview from the form action, or modify #RequstMapping value to /springmvcreview/login
You don't have the contextConfigLocation for your DispatcherServlet. You need that to tell context:component-scan to scan the com.github.wjoz.springmvcreview.auth package and load the AuthController.
<servlet>
<servlet-name>spring-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value><PATH_TO>/spring-dispatcher-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
I saw one more issue. You don't need the main.java part in the following;
<context:component-scan base-package="com.github.wjoz.springmvcreview.auth" />
I am making simple example hello but I am getting error resource not found.
The requested resource (/Spring3MVC/hello) is not available.
this are my file
<?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"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>Spring3MVC</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>*</url-pattern>
</servlet-mapping>
</web-app>
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<context:component-scan
base-package="net.viralpatel.spring3.controller" />
<mvc:annotation-driven />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
package net.viralpatel.spring3.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
#Controller
public class HelloWorldController {
#RequestMapping("/hello")
public ModelAndView helloWorld() {
String message = "Hello World, Spring 3.0!";
System.out.println(message);
return new ModelAndView("hello", "message", message);
}
}
hello.jsp
Spring 3.0 MVC Series: Hello World - ViralPatel.net
${message}
index.jsp
<html>
<head>
<title>Spring 3.0 MVC Series: Index - ViralPatel.net</title>
</head>
<body>
Say Hello
</body>
</html>
The dispatcher servlet is mapped to an invalid url, * is not a valid servlet mapping, change the mapping to:
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
In general the url-pattern must start or end with a * (.jsp, /resources/ or /*)or be a fixed string like /hello.
Also you will need to change the href attribute to prefix the context root:
Say Hello