Menu
Im new in java and spring. I'm trying to make hello world app and don't get what i'm doing wrong.
here is my directory structure:
test_app
-pom.xml
-src
--main
---java
----com.example.web
-----IndexController.java
---webapp
----static
-----img
------example.jpg
----WEB-INF
-----web.xml
-----dispatcher-servlet.xml
-----jsp
------index.jsp
and sources: web.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<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>Movie Reminder WebApp</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>WEB-INF/dispatcher-servlet.xml</param-value>
</context-param>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
</web-app>
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: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.xsd">
<context:annotation-config/>
<context:component-scan base-package="com.example.web"/>
<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>
IndexController.java
package com.example.web;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
@Controller
public class IndexController {
@RequestMapping(value = "/")
public ModelAndView index() {
return new ModelAndView("index");
}
}
index.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<title>Hello Spring!</title>
</head>
<body>
<img src="<c:url value="/static/img/example.jpg" />" />
</body>
</html>
when i deploy my app and request , i get 404 on image request
http://localhost:8081/ --- http 200 ok
http://localhost:8081/static/img/example.jpg - http 404 not found
when i add mvc:resources to dispatcher-servlet.xml
<context:annotation-config/>
<context:component-scan base-package="com.example.web"/>
<mvc:resources mapping="/static/**" location="/static/" />
and recompile im getting 404 to / request
http://localhost:8081/ --- http 404 not foundok
http://localhost:8081/static/img/example.jpg - http 200 ok
Help me please to figure out what i'm doing wrong
250
Spring Boot comes with a pre-configured implementation of ResourceHttpRequestHandler to facilitate serving static resources. By default, this handler serves static content from any of the /static, /public, /resources, and /META-INF/resources directories that are on the classpath.
This mechanism is built into java and will allow you to store your data files in the same place you store your class files (so, generally, on the classpath, and usually in a jar file). getResource returns a URL instance; many APIs that require a complete resource will accept these.
In your node application, you can use node-static module to serve static resources. The node-static module is an HTTP static-file server module with built-in caching.
Step 1: Move images folder from src/main/resources/static/images to src/main/webapp/WEB-INF/images. Step 2: Look up SpringBootMainApplication. java add code @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { // Register resource handler for images registry.
Just add both these lines to your dispatcher-servlet.xml
<mvc:resources mapping="/static/**" location="/static/" />
<mvc:default-servlet-handler />
Here is what the documentation for default-servlet-handler says:
Configures a handler for serving static resources by forwarding to the Servlet container's default Servlet. Use of this handler allows using a "/" mapping with the
DispatcherServletwhile still utilizing the Servlet container to serve static resources. This handler will forward all requests to the default Servlet. Therefore it is important that it remains last in the order of all other URL HandlerMappings. That will be the case if you use the "annotation-driven" element or alternatively if you are setting up your customized HandlerMapping instance be sure to set its "order" property to a value lower than that of theDefaultServletHttpRequestHandler, which isInteger.MAX_VALUE.
91
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
