互聯網 - 大數據

/**
 * All actions may implement this interface, which exposes
 * the execute() method. However, as of XWork 1.1, this is
 * not required and is only here to assist users. You are
 * free to create POJOs that honor the same contract
 * defined by this interface without actually implementing
 * the interface.
 */
public interface Action {

    /**
     * Where the logic of the action is executed.
     *
     * @return a string representing the logical result of the execution.
     *         See constants in this interface for a list of standard result values.
     * @throws Exception thrown if a system level exception occurs.
     *                   Application level exceptions should be handled by returning
     *                   an error value, such as Action.ERROR.
     */
    public String execute() throws Exception;
}

public class Index implements Action {

	private static final long serialVersionUID = -1070481751569420550L;

	/* (non-Javadoc)
	 * @see com.opensymphony.xwork2.Action#execute()
	 */
	public String execute() throws Exception {
	    // write your logic here
	    return SUCCESS;
	}
}

public interface ActionProxy {

    /**
     * Called after all dependencies are set
     */
    void prepare() throws Exception;
    
    /**
     * @return the Action instance for this Proxy
     */
    Object getAction();

    /**
     * @return the alias name this ActionProxy is mapped to
     */
    String getActionName();

    /**
     * @return the ActionConfig this ActionProxy is built from
     */
    ActionConfig getConfig();

    /**
     * Sets whether this ActionProxy should also execute the Result after executing the Action
     *
     * @param executeResult
     */
    void setExecuteResult(boolean executeResult);

    /**
     * @return the status of whether the ActionProxy is set to execute the Result after the Action is executed
     */
    boolean getExecuteResult();

    /**
     * @return the ActionInvocation associated with this ActionProxy
     */
    ActionInvocation getInvocation();

    /**
     * @return the namespace the ActionConfig for this ActionProxy is mapped to
     */
    String getNamespace();

    /**
     * Execute this ActionProxy. This will set the ActionContext from the ActionInvocation into the ActionContext
     * ThreadLocal before invoking the ActionInvocation, then set the old ActionContext back into the ThreadLocal.
     *
     * @return the result code returned from executing the ActionInvocation
     * @throws Exception
     * @see ActionInvocation
     */
    String execute() throws Exception;

    /**
     * Sets the method to execute for the action invocation. If no method is specified, the method provided by
     * in the action's configuration will be used.
     *
     * @param method the string name of the method to invoke
     */
    void setMethod(String method);

    /**
     * Returns the method to execute, or null if no method has been specified (meaning "execute" will be invoked)
     */
    String getMethod();
    
}

<struts>
    <bean class="com.opensymphony.xwork2.ObjectFactory" name="xwork" />
    <bean type="com.opensymphony.xwork2.ObjectFactory" name="struts" class="org.apache.struts2.impl.StrutsObjectFactory" />

    <bean type="com.opensymphony.xwork2.ActionProxyFactory" name="xwork" class="com.opensymphony.xwork2.DefaultActionProxyFactory"/>
    <bean type="com.opensymphony.xwork2.ActionProxyFactory" name="struts" class="org.apache.struts2.impl.StrutsActionProxyFactory"/>
    
    <!-- 省略了其他的bean節點的定義 -->

    <!--  Only have static injections -->
    <bean class="com.opensymphony.xwork2.ObjectFactory" static="true" />
    <bean class="com.opensymphony.xwork2.util.XWorkConverter" static="true" />
    
     <!-- 省略了其他的靜態注入的定義 -->
  
    <package name="struts-default" abstract="true">
        <result-types>
            <result-type name="chain" class="com.opensymphony.xwork2.ActionChainResult"/>
            <result-type name="dispatcher" class="org.apache.struts2.dispatcher.ServletDispatcherResult" default="true"/>
            <result-type name="redirect" class="org.apache.struts2.dispatcher.ServletRedirectResult"/>

            <!-- 省略了其他的ResultType的定義 -->
 
        </result-types>

        <interceptors>
            <interceptor name="autowiring" class="com.opensymphony.xwork2.spring.interceptor.ActionAutowiringInterceptor"/>
            <interceptor name="params" class="com.opensymphony.xwork2.interceptor.ParametersInterceptor"/>

            <!-- 省略了其他的Interceptor的定義 -->

            <!-- Basic stack -->
            <interceptor-stack name="basicStack">
                <interceptor-ref name="exception"/>
                <interceptor-ref name="servletConfig"/>
                <interceptor-ref name="prepare"/>
                <interceptor-ref name="checkbox"/>
                <interceptor-ref name="params"/>
                <interceptor-ref name="conversionError"/>
            </interceptor-stack>

            <!-- A complete stack with all the common interceptors in place.
                 Generally, this stack should be the one you use, though it
                 may do more than you need. Also, the ordering can be
                 switched around (ex: if you wish to have your servlet-related
                 objects applied before prepare() is called, you'd need to move
                 servlet-config interceptor up.

                 This stack also excludes from the normal validation and workflow
                 the method names input, back, and cancel. These typically are
                 associated with requests that should not be validated.
                 -->
            <interceptor-stack name="defaultStack">
                <interceptor-ref name="exception"/>
                <interceptor-ref name="alias"/>
                <interceptor-ref name="servletConfig"/>
                <interceptor-ref name="prepare"/>
                <interceptor-ref name="i18n"/>
                <interceptor-ref name="chain"/>
                <interceptor-ref name="debugging"/>
                <interceptor-ref name="profiling"/>
                <interceptor-ref name="scopedModelDriven"/>
                <interceptor-ref name="modelDriven"/>
                <interceptor-ref name="fileUpload"/>
                <interceptor-ref name="checkbox"/>
                <interceptor-ref name="staticParams"/>
                <interceptor-ref name="params">
                  <param name="excludeParams">dojo\..*</param>
                </interceptor-ref>
                <interceptor-ref name="conversionError"/>
                <interceptor-ref name="validation">
                    <param name="excludeMethods">input,back,cancel,browse</param>
                </interceptor-ref>
                <interceptor-ref name="workflow">
                    <param name="excludeMethods">input,back,cancel,browse</param>
                </interceptor-ref>
            </interceptor-stack>

            <!-- 省略了其他的interceptor-stack節點的定義 -->

       </interceptors>

        <default-interceptor-ref name="defaultStack"/>

    </package>

</struts>

模塊化管理配置文件

<struts>

    <include file="struts-default.xml"/>
    <include file="web/struts-config.xml"/>
    <include file="web/struts-action.xml"/>
	
</struts>

簡單的IoC

<bean class="com.opensymphony.xwork2.ObjectFactory" name="xwork" />
<bean type="com.opensymphony.xwork2.ObjectFactory" name="struts" class="org.apache.struts2.impl.StrutsObjectFactory" />

@Inject("xwork")
protected ObjectFactory objectFactory;

public LightURLUnknownHandler(@Inject ObjectFactory objectFactory) {
    this.objectFactory = objectFactory;
}

@Inject
public void setObjectFactory(ObjectFactory factory) {
    this.objectFactory = factory;
}

@Inject(required=false)
public void setUnknownHandler(UnknownHandler handler) {
    this.unknownHandler = handler;
}

public interface Container extends Serializable {

  /**
   * Default dependency name.
   */
  String DEFAULT_NAME = "default";

  /**
   * Injects dependencies into the fields and methods of an existing object.
   */
  void inject(Object o);

  /**
   * Creates and injects a new instance of type {@code implementation}.
   */
  <T> T inject(Class<T> implementation);

  /**
   * Gets an instance of the given dependency which was declared in
   * {@link com.opensymphony.xwork2.inject.ContainerBuilder}.
   */
  <T> T getInstance(Class<T> type, String name);

  /**
   * Convenience method.&nbsp;Equivalent to {@code getInstance(type,
   * DEFAULT_NAME)}.
   */
  <T> T getInstance(Class<T> type);
  
  /**
   * Gets a set of all registered names for the given type
   * @param type The instance type
   * @return A set of registered names
   */
  Set<String> getInstanceNames(Class<?> type);

  /**
   * Sets the scope strategy for the current thread.
   */
  void setScopeStrategy(Scope.Strategy scopeStrategy);

  /**
   * Removes the scope strategy for the current thread.
   */
  void removeScopeStrategy();
}

package節點詳解

參考文檔