ActionProxy相关实现类

package com.opensymphony.xwork2;

import com.opensymphony.xwork2.config.Configuration;
import com.opensymphony.xwork2.config.ConfigurationException;
import com.opensymphony.xwork2.config.RuntimeConfiguration;
import com.opensymphony.xwork2.config.entities.ActionConfig;
import com.opensymphony.xwork2.inject.Inject;
import com.opensymphony.xwork2.util.LocalizedTextUtil;
import com.opensymphony.xwork2.util.logging.Logger;
import com.opensymphony.xwork2.util.logging.LoggerFactory;
import com.opensymphony.xwork2.util.profiling.UtilTimerStack;
import java.io.Serializable;
import java.util.Locale;
import org.apache.commons.lang3.StringEscapeUtils;
import org.apache.commons.lang3.StringUtils;

public class DefaultActionProxy
  implements ActionProxy, Serializable
{
  private static final long serialVersionUID = 3293074152487468527L;
  private static final Logger LOG = LoggerFactory.getLogger(DefaultActionProxy.class);
  protected Configuration configuration;
  protected ActionConfig config;
  protected ActionInvocation invocation;
  protected UnknownHandlerManager unknownHandlerManager;
  protected String actionName;
  protected String namespace;
  protected String method;
  protected boolean executeResult;
  protected boolean cleanupContext;
  protected ObjectFactory objectFactory;
  protected ActionEventListener actionEventListener;
  private boolean methodSpecified = true;

  protected DefaultActionProxy(ActionInvocation inv, String namespace, String actionName, String methodName, boolean executeResult, boolean cleanupContext)
  {
    this.invocation = inv;
    this.cleanupContext = cleanupContext;
    if (LOG.isDebugEnabled()) {
      LOG.debug("Creating an DefaultActionProxy for namespace [#0] and action name [#1]", new String[] { namespace, actionName });
    }

    this.actionName = StringEscapeUtils.escapeHtml4(actionName);
    this.namespace = namespace;
    this.executeResult = executeResult;
    this.method = StringEscapeUtils.escapeEcmaScript(StringEscapeUtils.escapeHtml4(methodName));
  }

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

  @Inject
  public void setConfiguration(Configuration config) {
    this.configuration = config;
  }

  @Inject
  public void setUnknownHandler(UnknownHandlerManager unknownHandlerManager) {
    this.unknownHandlerManager = unknownHandlerManager;
  }

  @Inject(required=false)
  public void setActionEventListener(ActionEventListener listener) {
    this.actionEventListener = listener;
  }

  public Object getAction() {
    return this.invocation.getAction();
  }

  public String getActionName() {
    return this.actionName;
  }

  public ActionConfig getConfig() {
    return this.config;
  }

  public void setExecuteResult(boolean executeResult) {
    this.executeResult = executeResult;
  }

  public boolean getExecuteResult() {
    return this.executeResult;
  }

  public ActionInvocation getInvocation() {
    return this.invocation;
  }

  public String getNamespace() {
    return this.namespace;
  }

  public String execute() throws Exception {
    ActionContext nestedContext = ActionContext.getContext();
    ActionContext.setContext(this.invocation.getInvocationContext());

    String retCode = null;

    String profileKey = "execute: ";
    try {
      UtilTimerStack.push(profileKey);

      retCode = this.invocation.invoke();
    } finally {
      if (this.cleanupContext) {
        ActionContext.setContext(nestedContext);
      }
      UtilTimerStack.pop(profileKey);
    }

    return retCode;
  }

  public String getMethod()
  {
    return this.method;
  }

  private void resolveMethod()
  {
    if (StringUtils.isEmpty(this.method)) {
      this.method = this.config.getMethodName();
      if (StringUtils.isEmpty(this.method)) {
        this.method = "execute";
      }
      this.methodSpecified = false;
    }
  }

  protected void prepare() {
    String profileKey = "create DefaultActionProxy: ";
    try {
      UtilTimerStack.push(profileKey);
      this.config = this.configuration.getRuntimeConfiguration().getActionConfig(this.namespace, this.actionName);

      if ((this.config == null) && (this.unknownHandlerManager.hasUnknownHandlers())) {
        this.config = this.unknownHandlerManager.handleUnknownAction(this.namespace, this.actionName);
      }
      if (this.config == null) {
        throw new ConfigurationException(getErrorMessage());
      }

      resolveMethod();

      if (!this.config.isAllowedMethod(this.method)) {
        throw new ConfigurationException("Invalid method: " + this.method + " for action " + this.actionName);
      }

      this.invocation.init(this);
    }
    finally {
      UtilTimerStack.pop(profileKey);
    }
  }

  protected String getErrorMessage() {
    if ((this.namespace != null) && (this.namespace.trim().length() > 0)) {
      return LocalizedTextUtil.findDefaultText("xwork.exception.missing-package-action", Locale.getDefault(), new String[] { this.namespace, this.actionName });
    }

    return LocalizedTextUtil.findDefaultText("xwork.exception.missing-action", Locale.getDefault(), new String[] { this.actionName });
  }

  public boolean isMethodSpecified()
  {
    return this.methodSpecified;
  }
}

******************************************分割线**********************************

package org.apache.struts2.impl;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.DefaultActionProxy;
import com.opensymphony.xwork2.util.LocalizedTextUtil;
import java.util.Locale;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts2.ServletActionContext;

public class StrutsActionProxy extends DefaultActionProxy
{
  private static final long serialVersionUID = -2434901249671934080L;

  public StrutsActionProxy(ActionInvocation inv, String namespace, String actionName, String methodName, boolean executeResult, boolean cleanupContext)
  {
    super(inv, namespace, actionName, methodName, executeResult, cleanupContext);
  }

  public String execute() throws Exception {
    ActionContext previous = ActionContext.getContext();
    ActionContext.setContext(this.invocation.getInvocationContext());
    try
    {
      return this.invocation.invoke();
    } finally {
      if (this.cleanupContext)
        ActionContext.setContext(previous);
    }
  }

  protected void prepare()
  {
    super.prepare();
  }

  protected String getErrorMessage()
  {
    if ((this.namespace != null) && (this.namespace.trim().length() > 0)) {
      String contextPath = ServletActionContext.getRequest().getContextPath();
      return LocalizedTextUtil.findDefaultText("struts.exception.missing-package-action.with-context", Locale.getDefault(), new String[] { this.namespace, this.actionName, contextPath });
    }

    return super.getErrorMessage();
  }
}