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This article is to share with you about how to analyze the integration method of WebWork and Spring, the editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article.

Integration of WebWork2.1 and Spring

There are two ways:

Method 1: first WebWork and then Spring (using webwork2-spring.jar integration)

The execution order of this method is first WebWork and then Spring in the process of integration of WeWork and Spring.

That is, first find the action to be executed in xwork.xml, and if the action depends on other bean, then look for the dependent bean in applicationContext.xml.

The IoC function implementation of WebWork2 is to specify the dependencies of the action class with other bean in xwork.xml. That is:

(1) xwork.xml file

MyDAO / success.jsp

(2) applicationContext.xml file

The specific steps for integrating Webwork with Spring are as follows:

1. Download the following file: http://www.ryandaigle.com/pebble/images/webwork2-spring.jar

two。 Configure xwork.xml

2.1 when defining action in xwork.xml, external-ref is used to specify the dependent spring bean

SomeDao / success.jsp

2.2 specify an external reference parser in

The function of SpringServletContextReferenceResolver is to resolve externally referenced bean in applicationContext.xml

2.3 add an interceptor to allow references to be resolved as external resources

3. External parsers that configure Spring and XWork in web.xml work in the same Web Context

ContextConfigLocation classpath:/applicationContext.xml org.springframework.web. Context.ContextLoaderListener com.atlassian.xwork.ext. ResolverSetupServletContextListener

* A listener is required by spring and must be defined regardless of whether it is integrated with WebWork or not; the second listener is needed by an external parser and is used to extract the ApplicationContext of Spring through ServletContext as a bridge between WebWork and Spring.

The storage path of 4.applicationContext.xml file and xwork.xml file is under classpath.

Define the referenced bean in applicationContext.xml

Description:

If you do not use WebWork2, use Spring completely to achieve the above effect, and adopt a similar definition in applicationContext.xml:

Method 2: first Spring and then WebWork (using spring-xwork-integration.jar integration)

The order in which this method is executed in the integration of WebWork and Spring is first Spring, then WebWork. That is, first Spring is responsible for all the dependencies of wire, and then XWork executes action.

Note: because XWork generates a new class instance for each action call, action should be configured as prototype in Spring's applicationContext.xml.

1. Configure SpringObjectFactory

(0) download https://xwork-optional.dev.java.net/files/documents/1475/11992/spring-xwork-integration.jar

(1) can be configured in web.xml

Org.springframework.web. Context.ContextLoaderListener com.opensymphony.xwork.spring. SpringObjectFactoryListener

(2) or: configure in applicationContext.xml

You can choose either of the above two methods for integrating WebWork and Spring.

two。 Define bean in applicationContext.xml

3. Define action in xwork.xml (note that the class of action is the same as the id of bean)

View.jsp

Description:

This method is basically the same as that in WebWork 2.2.

Part two: the integration of WebWork2.2 and Spring

Spring is an IoC container supported by * in WebWork2.2.

1 configure the webwork.properties file, specifying spring as the IoC container for webwork

Webwork.objectFactory = spring

(1) the default autowiring mode is by name

That is, if the bean id in the applicationContext.xml file is the same as the action name in the xwork.xml file

(2) if you want to change to another mode:

Webwork.objectFactory.spring.autoWire = name | type | auto | constructor

2 configure the web.xml file to start the Spring listener

Org.springframework.web. Context.ContextLoaderListener

3 add the applicationContext.xml file to the WEB-INF directory

Example:

...

4 initialize the action by Spring

4.1 configure bean (that is, the action class) in the applicationContext.xml file of Spring

4.2 change the class property of action in xwork.xml from the class name to the bean name defined in Spring

For example:

(1) in applicationContext.xml, define bean id as bar

...

(2) in xwork.xml, the class= "bar" of action instead of the usual class name

Bar.ftl above is how to analyze the integration of WebWork and Spring. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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