commandrequest.java

java实现的可配置的工作流引擎,采用jsp+javabean实现

package com.hongsoft.res.dispatcher;

import javax.servlet.http.HttpServletRequest;

import com.hongsoft.res.formbean.UserSessionBean;
import com.hongsoft.res.util.ParameterUtil;

public class CommandRequest {
  private HttpServletRequest request;

  public CommandRequest(HttpServletRequest request){
    this.request = request;
  }
  /**
   * @return Command名称,参见pmes_command.map
   */
  public String getCommandName(){
    String name = getParameter(BaseParamName.COMMAND_NAME);
    if(name==null)
      name = (String)getAttribute(BaseParamName.COMMAND_NAME);
    return name;
  }
  /**
   * @return Command类型,不同的Command的类型意义有所不同
   */
  public String getCommandType(){
    String type = getParameter(BaseParamName.COMMAND_TYPE);
    if(type==null)
      type = (String)getAttribute(BaseParamName.COMMAND_TYPE);
    return type;
  }
  /**
   * 获取session中保存的相关用户信息
   * @return UserSessionBean对象
   */
  public UserSessionBean getUserSessionBean() {
    return (UserSessionBean)request.getSession().getAttribute(BaseParamName.SESSION_USER);
  }

  public void setUserSessionBean(UserSessionBean user){
    request.getSession(true).setAttribute(BaseParamName.SESSION_USER,user);
  }

  /**
   * @return 返回视图的Url,参见pmes_view.map
   */
  public String getReturnView(){
    String view = getParameter(BaseParamName.RETURN_VIEW);
    if(view==null)
      view = (String)getAttribute(BaseParamName.RETURN_VIEW);
    return view;
  }
  public HttpServletRequest getRequest() {
    return request;
  }
  /**
   * Gets a parameter as a string.
   * @param name The name of the parameter you want to get
   * @return The value of the parameter or null if the parameter was not
   *      found.
   */
  public String getParameter(String name){
    return ParameterUtil.getParameter(request, name);
  }
  /**
   * Gets a parameter as a string.
   * @param name The name of the parameter you want to get
   * @return The value of the parameter or null if the parameter was not
   *      found.
   */
  public Object getAttribute(String name) {
    return request.getAttribute(name);
  }
  /**
   * 设置Attribute
   * @param name The name of the Attribute you want to get
   * @param value The value of the Attribute.
   */
  public void setAttribute(String name,Object value){
    request.setAttribute(name,value);
  }
}