I am a newbie to Spring framework especially Spring MVC.
I am writing a code which takes in a Name in a form and displays it on the page. So index.jsp is the form class in which on hitting the sayHello button the request should get forwarded to another page hello.jsp and prints the message. But on clicking the button it is giving 404 error. According to me all the names and configurations are fine but it just doesn't go and prints the message.
index.jsp
<h2>Form</h2>
<form action="./hello.html">
Name: <input type="text" name="name"/><br>
<input type="submit" value="sayHello"/>
</form>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name>HelloWorld</display-name>
<servlet>
<servlet-name>helloworld</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>helloworld</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
</web-app>
HelloController.java
package com.spring.mvc.controllers;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
#Controller
public class HelloController {
#RequestMapping(value = "/hello.html")
public String testMVC(Model model) {
model.addAttribute("message", "Anshul !!");
return "hello";
}
}
helloworld-servlet.xml
<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
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-3.2.xsd">
<mvc:annotation-driven/>
<context:component-scan base-package="com.spring.mvc.controllers" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
hello.jsp
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<h1>${message}</h1>
</body>
</html>
The issue got resolved.
I think the issue was with my system or eclipse itself.
Ran the code on other machine and it worked just fine.
Thanks for replying #alex.b
Check with your directory
make sure that you have build path for required jar files
if it is correct it should work
Related
i am a newbie in the Java EE Spring MVC coding area. When i configured my first Spring MVC 3.0 site, i got a strange question that i have to manually type the MVC named url route to make it work.
The complete url route in my example is:
http://localhost:8080/SpringMVC/hello.jsp
i wanted to send a word to the controller and display it on the view.
But when i click return, the error page said:
HTTP Status 404 - /hello.do
type Status report
message /hello.do
description The requested resource is not available.
Apache Tomcat/7.0.85
So the url route was then: http://localhost:8080/hello.do
And i have to type the complete route :
http://localhost:8080/SpringMVC/hello.do to make it work.
i think there must be some errors in my web.xml and SpringMVC-servlet.xml configurations. i post all of my code below and welcome any suggestions.
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>SpringMVC</display-name>
<welcome-file-list>
<welcome-file>hello.jsp</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>SpringMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
SpringMVC-servlet.xml:
<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
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">
<!-- 配置上传文件的参数 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="209715200" />
<property name="defaultEncoding" value="UTF-8" />
<property name="resolveLazily" value="true" />
</bean>
<!-- 配置Controller -->
<bean name="/hello.do" class="com.yyy.controller.HelloController"></bean>
<!-- 配置视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
HelloController.java:
package com.yyy.controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;
public class HelloController extends AbstractController{
protected ModelAndView handleRequestInternal(HttpServletRequest request,
HttpServletResponse response) throws Exception {
String hello = request.getParameter("hello");
System.out.println("------:" + hello);
ModelAndView mav = new ModelAndView("index");
mav.addObject("helloworld", "hello "+hello);
return mav;
}
}
hello.jsp
<%# page language="java" contentType="text/html; charset=utf-8"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
<form action="hello.do" method="post">
hello:<input type="text" name="hello"/>
<input type="submit" value="submit">
</form>
</body>
</html>
And the index.jsp:
<%# page language="java" contentType="text/html; charset=utf-8"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>index.jsp</title>
</head>
<body>
<h1>${helloworld} </h1>
</body>
</html>
You can change the <form action> like below. This is a better approach.
<form action="${pageContext.request.contextPath}/hello.do">
My flow is not forwarded to my controller..And I am getting a warning like:
org.springframework.web.servlet.DispatcherServlet noHandlerFound
WARNING: No mapping found for HTTP request with URI [/Spectrum_Inverntory/hello] in DispatcherServlet with name 'dispatcher'
-This is my 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_2_5.xsd" id="WebApp_ID"
version="2.5">
<display-name>Spectrum_Inventory</display-name>
<welcome-file-list>
<welcome-file>welcome.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-
class>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
-And this is dispatcher-servlet.xml
<?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:context="http://www.springframework.org/schema/context"
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:annotation-driven/>
<context:component-scan base-package="com.spectrum" />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass">
<value>org.springframework.web.servlet.view.JstlView</value>
</property>
<property name="prefix"><value>/</value></property>
<property name="suffix"><value>.jsp</value></property>
</bean>
<bean id="properties"
class="org.springframework.beans.factory.config.
PropertyPlaceholderConfigurer">
<property name="location">
<value>WEB-INF/mysql.properties</value>
</property>
</bean>
</beans>
**
- InventoryController.java
**
package com.spectrum.controller;
import javax.servlet.http.HttpServletRequest;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
#Controller
#RequestMapping(value = "/Spectrum_Inverntory")
public class InventoryController {
#RequestMapping(value="/hello")
public String viewProducts(Model model,HttpServletRequest request){
return "index";
}
}
welcome.jsp
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>index here</title>
</head>
<body>
hiiiii
<jsp:forward page="hello"></jsp:forward>
</body>
</html>
It is going upto
but not hitting my controller... Please help
I am unable to know the exact reason for it.
My flow is not going in my controller..And I am getting a warning like :
org.springframework.web.servlet.DispatcherServlet noHandlerFound
WARNING: No mapping found for HTTP request with URI [/Spectrum_Inverntory/hello] in DispatcherServlet with name 'dispatcher'
I've seen this question a lot but however I am still unable to fix my problem. Hope you will be able to guide me.'
I get the following exception when i try to run my super simple spring web app
Mar 24, 2016 9:17:31 AM org.springframework.web.servlet.PageNotFound noHandlerFound
WARNING: No mapping found for HTTP request with URI [/51SpringWebMaven/] in DispatcherServlet with name 'offers'
Please find my codebase below
OffersController Class
package com.sharat.web.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
#Controller
public class OffersController {
#RequestMapping("/")
public String showHome(){
return "home";
}
}
offers-servlet.xml
<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
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-4.2.xsd">
<context:component-scan base-package="com.sharat.web.controller"></context:component-scan>
<mvc:annotation-driven></mvc:annotation-driven>
<bean id="jspViewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsps/"></property>
<property name="suffix" value=".jsp"></property>
</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" 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>50SpringBasicWeb</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<description></description>
<display-name>offers</display-name>
<servlet-name>offers</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>offers</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
home.jsp
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>JSP Page</title>
</head>
<body>
First JSP Home Page
</body>
</html>
Please guide me to get past this issue. I can't seem to find out what is wrong.
Thanks,
Sharat
It worked without me changing anything after some time. I do not understand why this is unreliable :(
Is there some best practice ?
Thanks,
Sharat
I am trying to learn spring mvc and facing a problem (which seems to be a common one). I have searched a lot of solutions but nothing is helping me out...
My web.xml is:
<?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>Spring Hello World</display-name>
<welcome-file-list>
<welcome-file>hello.jsp</welcome-file>
</welcome-file-list>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>chatbooster</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>chatbooster</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
My chatbooster-servlet.xml is :
<?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:context="http://www.springframework.org/schema/context"
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.controller" />
<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/" />
<property name="suffix" value=".jsp" />
</bean>
When I try to run hello.jsp, the error is the requested resource is not available.
Hello.jsp:
<%#page contentType="text/html" pageEncoding="UTF-8"%>
<%#taglib prefix="i" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
<html>
<head>
<title>Home</title>
</head>
<body>
<h1>Hello World!</h1>
<hr/>
<form action="hi">
Name: <input type="text" name="name"> <input type="submit" value="Submit">
</form>
</body>
</html>
HelloWorldController.ava
#Controller
public class HelloWorldController {
#RequestMapping("/")
public String hello() {
return "hello";
}
#RequestMapping(value = "/hi", method = RequestMethod.GET)
public String hi(#RequestParam("name") String name, Model model) {
String message = "Hi " + name + "!";
model.addAttribute("message", message);
return "hi";
}
}
Edit1:
The problem is occurring because of tomcat server as my simple html page is also not running and it is throwing the same exception. I am using tomcat server version 7. Can anyone hint me out the cause of this exception?
Tomcat doesn't know about hello.jsp since it is inside WEB-INF.
Change
<welcome-file-list>
<welcome-file>hello.jsp</welcome-file>
</welcome-file-list>
to
<welcome-file-list>
<welcome-file>/</welcome-file>
</welcome-file-list>
It will work.
This could be a the case of Hello.jsp. The first letter of Hello.jsp is capitalized yet in your controller you are returning a lower case hello. If you change your controller to return the string "Hello" it should work.
Thank you everyone for your answers. Actually I was able to solve my issue by just changing the location of html and jsp pages from web inf folder to web content folder. I dont know why it worked but pages are being run by the server now.
Hello I am new to Spring and stuck on my jsp mapping - my pages give out the 404 - Page not found error.
My Project Structure is
WebContent
+ META-INF
- WEB-INF
- jsp
index.jsp
login.jsp
+lib
springMVC-servlet.xml
web.xml
Web.xml
<display-name>spring</display-name>
<servlet>
<servlet-name>springMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
springMVC-servlet.xml
<?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:context="http://www.springframework.org/schema/context"
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-3.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">
<context:component-scan
base-package="web.controller" />
<!-- Enabling Spring MVC configuration through annotations -->
<mvc:annotation-driven />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
HomeController
#RequestMapping(method=RequestMethod.GET, value="/")
public String index(){
return "index";
}
#RequestMapping(value="/login")
public String login() {
return "login";
}
I am able to load the http://localhost:8080/Spring3/
The index.jsp has the following code -
<%# taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%# taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%# page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<html>
<head>
<title>Login</title>
</head>
<body>
<c:url value="login.jsp" var="somevar" />
<h1>Click here to </h1> Login
</body>
</html>
However when I click the link to the login page - I get the 404 page.
I am not sure what is going wrong - Can anyone help me identify where my mapping is going wrong.
in index.jsp you should write <c:url value="login" var="somevar" /> as your controler having mapping #RequestMapping(value="/login")