WCS学习笔记(第四天) - 使用data bean从MyNewControllerCmd 向 MyNewView传递信息

本文链接：https://blog.youkuaiyun.com/jeff06143132/article/details/12706695

本文介绍如何在WebSphere Commerce中通过创建新的数据Bean和控制器实现数据交互。包括编写Controller接口及其实现，修改JSP页面以显示数据Bean中的信息，并提供了测试步骤。

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1. 编写Controller接口和实现：
a.WebSphereCommerceServerExtensionsLogic >src >com.ibm.commerce.sample.databeans 新建MyNewDataBean.java (可从IBM教程获取)，方法体主要对callingCommandName和calledByControllerCmd的set、get方法

 /// Section 1 /////////////////////////////////////////////
/// create fields and accessors (setter/getter methods) 

  private java.lang.String callingCommandName = null;
  private boolean calledByControllerCmd = false;
  
  
  public java.lang.String getCallingCommandName() {
    return callingCommandName;
  }
  
  public void setCallingCommandName(java.lang.String newCallingCommandName) 
  {
    callingCommandName = newCallingCommandName;
  }
  
  public boolean getCalledByControllerCmd() {
    return calledByControllerCmd;
  }
  
  public void setCalledByControllerCmd(boolean newCalledByControllerCmd) 
  {
    calledByControllerCmd = newCalledByControllerCmd;
  }
  
/// End of Section 1 ////////////////////////////////////

b. 修改WebSphereCommerceServerExtensionsLogic> src > com.ibm.commerce.sample.commands.MyNewControllerCmdImpl.java控制实现:

导入data bean

/// Import Section 1 ///////////////////////////////
import com.ibm.commerce.sample.databeans.MyNewDataBean;
/// End of Import Section 1 ////////////////////////

修改performExecute方法，分别对bean中callingCommandName和calledByControllerCmd赋值，并rspProp.put于mndbInstance，代码实现如下：

/// Section 3A/////////////////////////////////////////

  /// instantiate the MyNewDataBean databean and set the properties, 
  ///  then add the instance to resProp for response
  
  MyNewDataBean mndb = new MyNewDataBean();
  mndb.setCallingCommandName(this.getClass().getName());
  mndb.setCalledByControllerCmd(true);

/// end of section 3A/////////////////////////////////////////

/// Section 3B/////////////////////////////////////////
  rspProp.put("mndbInstance", mndb);

/// end of section 3B/////////////////////////////////////////

2. 修改JSP页面：

a. 在MyNewJSPTemplate.jsp的SECTION 5中增加下面代码，用于判断和显示bean传递的信息：

<!-- SECTION 5 -->

<c:if test="${mndbInstance.calledByControllerCmd}">
   <fmt:message key="Example" bundle="${tutorial}" /> <br />
   <fmt:message key="CalledByControllerCmd" bundle="${tutorial}" /> 
      <br />
   <fmt:message key="CalledByWhichControllerCmd" bundle="${tutorial}" /> 
   <b><c:out value="${mndbInstance.callingCommandName}" /></b> <br /> 
      <br />
</c:if>

<!-- END OF SECTION 5 -->

3. 测试：

a. 启动server

b. 访问: http://localhost/webapp/wcs/stores/servlet/MyNewControllerCmd (注：由于缓存可在url后加如: ?StoreId=10051 )