在写之前先看看
以前用<logic:iterate>实现把数据库中的数据展现:
[MainForm.jsp文件]
public class MainForm extends
...
{ private List list; private String bookname; private String bookauther; private String publish; ........}
[BookAction.java文件]
mainForm.setList(list);
......
[view.jsp文件]//展现数据库信息
.....
<
logic:iterate id
=
"
list
"
name
=
"
mainForm
"
property
=
"
list
"
>
<
tr
>
<
td
><
bean:write name
=
"
list
"
property
=
"
bookname
"
/></
td
>
<
td
><
bean:write name
=
"
list
"
property
=
"
bookauther
"
/></
td
>
<
td
><
bean:write name
=
"
list
"
property
=
"
publish
"
/></
td
>
</
tr
>
</
logic:iterate
>
.....
改进后----------------
[MainForm.jsp文件]
public
class
MainForm
extends
...
{ private String bookname; private String bookauther; private String publish; ........}
[BookAction.java文件]
...... ArrayList
<
MainForm
>
list
=
new
ArrayList
<
MainForm
>
();
while
(rs.next())
...
{ MainForm dataView=new MainForm();//在这Form中不存在list属性 dataView.setBookname(rs.getString(1)); dataView.setBookauther(rs.getString(2)); dataView.setPublish(rs.getString(3)); list.add(dataView); }
request.setAttribute(
"
list
"
,list);......
[view.jsp文件]//展现数据库信息
.....
<
logic:iterate id
=
"
q1
"
name
=
"
list
"
type
=
"
com.songbx.struts.form.MainForm
"
>
<
tr
>
<
td
><
bean:write name
=
"
q1
"
property
=
"
bookname
"
/></
td
>
<
td
><
bean:write name
=
"
q1
"
property
=
"
bookauther
"
/></
td
>
<
td
><
bean:write name
=
"
q1
"
property
=
"
publish
"
/></
td
>
</
tr
>
</
logic:iterate
>
.....
总结:<logic:iterate>标签中的name属性首先从Form中取值,若没有,则request,接下来是session等
在此另注意一点:在用request传值时,在<forward>中一定不能是redirect="true",否则找不到list
