Java. Lang. classnotfoundexception: org. springframework. Web. Context. contextloaderservlet

Check whether there is any exception: Java. Lang. classnotfoundexception: org. springframework. Web. Context. contextloaderservlet

Therefore, contextloaderservlet is not loaded successfully, leading to failure in building spring containers in Web. xml! Therefore, when you reference webapplicationcontextutils, java. Lang. noclassdeffounderror: ORG/springframework/web/Context/support/webapplicationcontextutils appears.

Scenario 1: webapplicationcontext wctx = webapplicationcontextutils. getrequiredwebapplicationcontext (servletcontext );

My spring-web.jsr package has been added, why can't the webapplicationcontextutils class be found while the program is running?

In one tutorial, I don't understand what it means: "An application context is obtained during action initialization. Reuse spring's webapplicationcontextutils class. If there is no available context, this action will not be correctly initialized ".

Case 2: (most of them are here and we are hit! Haha)

Your project packages may all be referenced. You need to manually copy them to the project!

Case 3:

The Spring framework has its own internal ing mechanism. The main problem is that the corresponding ing bean reference is not found!

<Context-param>
<Param-Name> contextconfiglocation </param-Name>
<Param-value> COM/wenjing/hibernate/test/wenjing-servlet.xml </param-value>
</Context-param>
This paragraph for a try, can be written to the spring-servlet.xml reference
The content is as follows:
Bean id = "newbaseaction" class = "DB. pbaseaction">
<Property name = "View"> <value> newbaseaction </value> </property>
</Bean>
Case 4:

You are using hibernate3.0! But not in your spring configuration file

<Bean id = "sessionfactory" class = "org. springframework. Orm. hibernate. localsessionfactorybean">

It should be:
<Bean id = "sessionfactory" class = "org. springframework. Orm. hibernate3.localsessionfactorybean">

Try it!

Case 5:

Keywords: Spring and Web Application Integration Method details

1. Copy the jar package of spring to the WEB-INF/lib directory of the Web application.

2. modify web. xml so that the application server can automatically load spring beanfactory objects.

<Context-param>

<Param-Name> contextconfiglocation </param-Name>

<Param-value>/WEB-INF/applicationcontext-*. XML, classpath *: applicationcontext-*. xml </param-value>

</Context-param>

<Listener>

<Listener-class> org. springframework. Web. Context. contextloaderlistener </listener-class>

</Listener>

3. You can use the webapplicationcontextutils tool class in Web components.

An instance that obtains the beanfactory object. It owns the beanfactory object.

The container management capability of spring.

Explanation:

The result of this configuration is that spring uses contextloaderlistener to set the webapplicationcontext object

(Beanfactory subclass) put in servletcontext and get the value named a static variable:

Webapplicationcontext. root_web_application_context_attribute

* The webapplicationcontextutils. getapplicationcontext () method is used to obtain the webapplicationcontext.

Object Value

* You can also use request. getsession (). getservletcontext (). getattribute (webapplicationcontext. root_web_applicat