📄 day05_2.txt
字号:
</tr>
<input type="hidden" name="prductId"
value='<%=p.getProductId()%>'>
</form>
<%
}
}
%>
</table>
<br>
<a href = "addProduct.do" >add a product</a>
</body>
</html>
==========================================================
15 为addProduct.do 创建Action
file --> new --> web --> action
package : ec_port_web
Action : AddProductAction
--> next
action path : addProduct
formbean name :
scope ：
validate ：
input jsp ：
==========================================================
16,修改 perform() 方法
package ec_port_web;
import org.apache.struts.action.*;
import javax.servlet.http.*;
import java.util.Collection;
import javax.ejb.CreateException;
import javax.ejb.FinderException;
import exceptions.ServiceLocatorException;
import dto.CategoryDTO;
import delegates.ProductMgmDelegate;
public class AddProductAction extends Action {
public ActionForward perform(
ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest request,
HttpServletResponse httpServletResponse) {
try{
ProductMgmDelegate pd = new ProductMgmDelegate();
Collection col = pd.getAllCategory();
request.getSession().
setAttribute( "ALL_CATEGORY" , col );
return actionMapping.findForward( "success" );
}catch( ServiceLocatorException se ){
se.printStackTrace();
return actionMapping.findForward( "systemError" );
}
catch( FinderException fe ){
fe.printStackTrace();
return actionMapping.findForward( "systemError" );
}
catch( CreateException ce ){
ce.printStackTrace();
return actionMapping.findForward( "systemError" );
}
}
}
==========================================================
17， 为AddProductAction 创建forward
a) when get all category success
path : /addProduct.jsp
name : success
b) when some exception be caught
path : /
name : systemError
=========================================================
18, 创建addProduct.jsp
<%@ page contentType="text/html; charset=GBK" %>
<%@page import = "java.util.*,dto.CategoryDTO"%>
<html>
<head>
<title>
addProduct
</title>
</head>
<%
Collection col =
(Collection)session.getAttribute( "ALL_CATEGORY" );
%>
<body bgcolor="#ffffff">
<form action="addPrductSubmit.do" method="post">
<%
Iterator i = col.iterator();
%>
<p align=center>
<table width="600" border="0" cellspacing="1"
cellpadding="4" bgcolor="3399ff">
<tr>
<td colspan="2" align="center">
<font color="#ffffff" class="title">
添加产品</font>
</td>
</tr>
<tr>
<td bgcolor="#ececec" >产品类别</td>
<td bgcolor="#ececec" >
<select name="category">
<%
while( i.hasNext() ){
CategoryDTO category= (CategoryDTO)i.next();
%>
<option value='<%=category.getId()%>' selected>
<%=category.getName()%>
</option>
<%
}
%>
</select>
</td>
</tr>
<tr>
<td bgcolor="#ececec" >产品名称</td>
<td bgcolor="#ececec" >
<input type="text" name="name"></td>
</tr>
<tr>
<td bgcolor="#ececec" >产品单价</td>
<td bgcolor="#ececec" >
<input type="text" name="basePrice"></td>
</tr>
<tr>
<td bgcolor="#ececec" >详细信息</td>
<td bgcolor="#ececec" >
<textarea name="desc"></textarea></td>
</tr>
<tr>
<td colspan="2" bgcolor="#ececec" align="center">
<input type="submit" value="添加"></td>
</tr>
</table>
</form>
</body>
</html>
==========================================================
19, 为addProduct.jsp 创建ActionForm
file --> new --> web --> Action Form
package : ec_port_web
ActionForm : AddProductSubmitForm
---> add from jsp --> addProduct.jsp
---> add
name: category
type: java.lang.String
---> finish
==========================================================
package ec_port_web;
import org.apache.struts.action.*;
import javax.servlet.http.*;
public class AddPrductSubmitForm extends ActionForm {
private String category;
private String desc;
private String basePrice;
private String name;
public String getCategory() {
return category;
}
public void setCategory(String category) {
this.category = category;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getbasePrice() {
return basePrice;
}
public void setBasePrice(String basePrice) {
this.basePrice = basePrice;
}
public ActionErrors validate(ActionMapping actionMapping, HttpServletRequest httpServletRequest) {
/**@todo: finish this method, this is just the skeleton.*/
return null;
}
public void reset(ActionMapping actionMapping, HttpServletRequest httpServletRequest) {
}
}
==========================================================
20, 为addProduct.jsp创建Action
file --> new --> web --> action
package : ec_port_web
Action : AddProductSubmitAction
--> next
action path : /addPrductSubmit
formbean name : addProductSubmitForm
scope : session
validate : true
input jsp : addProduct.jsp
---> finish
==========================================================
21, 修改perform方法
package ec_port_web;
import org.apache.struts.action.*;
import javax.servlet.http.*;
import delegates.ProductMgmDelegate;
import javax.ejb.CreateException;
import javax.ejb.FinderException;
import exceptions.*;
import dto.*;
import java.util.Collection;
public class AddPrductSubmitAction extends Action {
public ActionForward perform(
ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest request,
HttpServletResponse httpServletResponse) {
AddPrductSubmitForm form =
(AddPrductSubmitForm) actionForm;
try{
ProductMgmDelegate pd = new ProductMgmDelegate();
CategoryDTO category = new CategoryDTO(
new Integer(form.getCategory()),
null,null);
ProductDTO product = new ProductDTO(
null,
form.getName(),
Double.parseDouble(form.getbasePrice()),
form.getDesc(),category);
pd.addProduct( product );
Collection col = pd.getAllCategory();
Collection pCol = pd.getAllProduct();
request.getSession()
.setAttribute( "ALL_CATEGORY" , col );
request.getSession()
.setAttribute( "ALL_PRODUCT" ,pCol);
return actionMapping.findForward( "success" );
}catch( ServiceLocatorException se ){
se.printStackTrace();
return actionMapping.findForward( "systemError" );
}
catch( CreateException ce ){
ce.printStackTrace();
return actionMapping.findForward( "systemError" );
}
catch( FinderException fe ){
fe.printStackTrace();
return actionMapping.findForward( "systemError" );
}
}
}
==========================================================
22,为AddProductSubmitAction 添加 forward
a) when success
path : /productMgm.jsp
name : success
b) when some exceptions be caught
path : /fail.jsp
name : systemError
==========================================================
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