Servlet URL pattern to match all URL - spring

I'm current using Spring MVC to do a project. I having problem using the url-pattern to direct my jsp page. Everytime I create a new jsp page, I have to hardcode the jsp name into the web.xml.
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" version="3.0">
<display-name>ShoppingCart</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- Once DispatcherServlet is initialized will look for file name [servlet-name]-servlet.xml, dispatcher-servlet.xml -->
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- all request matches with <url-pattern> will be handled by DispatcherServlet instance named dispatcher -->
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/register.jsp</url-pattern>
<url-pattern>/login.jsp</url-pattern>
<url-pattern>/update.jsp</url-pattern>
</servlet-mapping>
</web-app>
Image below is my folder structure
folder structure

Specify your servlet general url-mapping on web.xml and then handle its sub URLS on your controllers
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
Configure an InternalResourceViewResolver bean on your dispatcher-context.xml
<beans:bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="prefix" value="/WEB-INF/views/" />
<beans:property name="suffix" value=".jsp" />
</beans:bean>
On your Controller :
#Controller
#RequestMapping("/")
public class ControllerRegister{
#RequestMapping("register")
public String goToRegisterPage(){
return "register";
}
}
this will serve register.jsp under folder WEB-INF/views/ wehn calling URL:
http://yourHost:port/yourApp/register

Related

Why can't Tomcat and Spring see my jsp file?

I started learning Spring MVC.I connected all required dependencies with maven and downloaded Tomcat.But when i run Tomcat my jsp file is not opening. What the problem? Annotations seem to be correct
My applicationContext.xml:
<?xml version="1.0" encoding="UTF-8"?>
<context:component-scan base-package="com.ildar" />
<mvc:annotation-driven/>
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".jsp" />
</bean>
Web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
id="WebApp_ID" version="3.1">
<display-name>spring-cource-mvc</display-name>
<absolute-ordering />
<servlet>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
Controller class:
#Controller
public class MyController {
#RequestMapping("/")
public String showMyView(){
return "first-view";
}
}
And when I run Tomcat , i just see eror 404 not found in browser

Page not found 404 using spring mvc

Im trying to show the .jsp page, i have set the Controller class and the web.xml and servlet.xml. When i run it shows "404 page not found". Can you help me find mistake, step by step.
Im using intellij idea 2019, tomcat 9
#Controller
public class HomeController {
#RequestMapping("/")
public String showHome(){
return "nesto";
}
}
This is web.xml and servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
id="WebApp_ID" version="3.1">
<display-name>spring-mvc-demo</display-name>
<!-- Spring MVC Configs -->
<!-- Step 1: Configure Spring MVC Dispatcher Servlet -->
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring-mvc-demo-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- Step 2: Set up URL mapping for Spring MVC Dispatcher Servlet -->
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
<context:component-scan base-package="com.luv2code.springdemo" />
<mvc:annotation-driven/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
Change
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
to
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
You missed id="viewResolver"
adding this property to your "InternalResourceViewResolver" bean might help you
<property name="order" value="1"/>

Call index.html in Tomcat

I'm trying to run an application in Tomcat. I create an application that generates a war file that I put on the Tomcat to run the application but when I try to run
http://localhost:8080/AppletTest/
it gives me error:
HTTP Status 404 -
type Status report
message
description The requested resource is not available.
Apache Tomcat/8.0.28
And more detailed:
06-Nov-2015 16:35:07.052 WARNING [http-nio-8080-exec-51] org.springframework.web.servlet.PageNotFound.noHandlerFound No mapping found for HTTP request with URI [/AppletTest/] in DispatcherServlet with name 'mvc-dispatcher'
In the dir installation of tomcat my app resides on
~/apache-tomcat-8.0.28/webapps/
and the index.html and the other files are on the
~/apache-tomcat-8.0.28/webapps/AppletTest/WEB-INF/pages/index.html
.
I'm making any error?
My files:
web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app
version="3.0"
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_3_0.xsd">
<display-name>Test</display-name>
<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>/WEB-INF/mvc-dispatcher-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>mvc-dispatcher</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup></load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>mvc-dispatcher</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/mvc-dispatcher-servlet.xml</param-value>
</context-param>
</web-app>
mvc-dispatcher-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.something.controller" />
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/pages/</value>
</property>
<property name="suffix">
<value>.html</value>
</property>
</bean>
</beans>
You have created a Spring application.
On your Web.xml you have mapped all requests (/*) to your Spring Servlet.
Now, you have to create a controller that will listen to your URL.
Example:
#Controller
public class IndexController {
#RequestMapping(value = "", method=RequestMethod.GET)
public String index(Model m) {
return "index/index";
}
}
Now this method will listen the {context}/ url and will return the index.html view.

Spring Static Resource Mapping

I have been followed by this error since I started using Spring
I can't handle static content
My dispatcher-servlet configuration
<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:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<import resource="applicationContext.xml"/>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/"
p:suffix=".jsp" />
<mvc:resources mapping="/captcha/*" location="/resources/captcha/" />
<mvc:annotation-driven />
<mvc:default-servlet-handler/>
</beans>
My web configuration
<?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://java.sun.com/xml/ns/javaee/web-app_3_0.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>
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>/WEB-INF/log4j.properties</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</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>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.css</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.js</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.js</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.gif</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.jpg</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.PNG</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>Login.jsp</welcome-file>
</welcome-file-list>
</web-app>
Finally the image I want to add is
<img src="<c:url value="/resources/captcha/13.PNG"/>"/>
But my log displays this:
01:19:10,801 DEBUG RequestMappingHandlerMapping:220 - Looking up handler method for path /resources/captcha/35.png
01:19:10,803 DEBUG RequestMappingHandlerMapping:230 - Did not find handler method for [/resources/captcha/35.png]
01:19:10,803 DEBUG SimpleUrlHandlerMapping:169 - Matching patterns for request [/resources/captcha/35.png] are [/**]
01:19:10,804 DEBUG SimpleUrlHandlerMapping:194 - URI Template variables for request [/resources/captcha/35.png] are {}
01:19:10,805 DEBUG SimpleUrlHandlerMapping:124 - Mapping [/resources/captcha/35.png] to HandlerExecutionChain with handler [org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler#eea824] and 1 interceptor
01:19:10,805 DEBUG DispatcherServlet:912 - Last-Modified value for [/project/resources/captcha/35.png] is: -1
01:19:10,805 DEBUG DispatcherServlet:999 - Null ModelAndView returned to DispatcherServlet with name 'dispatcher': assuming HandlerAdapter completed request handling
01:19:10,806 DEBUG DispatcherServlet:966 - Successfully completed request
Am I missing more configuration?
Thanks
When you try to access
/resources/captcha/13.PNG
It is mapped to default servlet by virtue of
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.PNG</url-pattern>
</servlet-mapping>
It is not mapped to /resources/captcha/ because the resources looks for paths which have the pattern of type http://localhost:8080/captcha/* and not the ones with http://localhost:8080/resources/captcha/* so to handle such requests, you need to have a view resolver to respond to /resources/* pattern
something like
#RequestMapping(path = '/resources/*')
public Object handler(){...}
My guess is you want to render the PNG image as a static resource and you should probably have <img src="<c:url value="/resources/captcha/13.PNG"/>"/>.
NOTE: I am not sure what I suggested works or not. I am answering solely based on my memory and have not tested any of the situations you mentioned.

How to configure mapping in Spring MVC and Tomcat

im trying configure SpringMVC project and i have error when compile
WARN : org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/test/home.jsp] in DispatcherServlet with name 'appServlet'
I have a jsp page here: /test/src/main/webapp/WEB-INF/views/home.jsp
This is my code:
/test/src/main/webapp/WEB-INF/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">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring/root-context.xml
</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<filter>
<filter-name>charsetFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>charsetFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
/test/src/main/webapp/WEB-INF/spring/appServlet/servlet-context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans"
xsi:schemaLocation="
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<annotation-driven />
<resources mapping="/resources/**" location="/resources/" />
<beans:bean
name="test"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="prefix" value="/WEB-INF/views/" />
<beans:property name="suffix" value=".jsp" />
</beans:bean>
<beans:import resource="controllers.xml" />
</beans:beans>
don't use jsp extension directly map it as html for example
<display-name>appServlet</display-name>
<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
and then in your controller map file without extention:
#RequestMapping(value="/home.html", method=RequestMethod.GET)
public ModelAndView indexView(){
ModelAndView mv = new ModelAndView("test/home");
return mv;
}
in this example as soon as the user hits /home.html Dispatcher servlet will resolve it and retrieve /test/home.jsp
Hope it helps.

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