上一篇我主要介紹dwr的概況。這一篇我用dwr做了個可以不刷新頁面就更新的表格。
運行環境：
windows xp pro sp2
j2sdk1.2.4_03
weblogic8.1
struts1.2.4
開發工具eclipse3.0
其實dwr和struts沒有什么關系，只不過最近我們項目組在用struts作東西。我就順便用把我的程序建立在Struts上。
主要文件。
dwr.jar--dwr的類庫包
struts的類庫包，具體我不說了，這東西誰都知道。
jdts0.9.jar--數據庫SQLServer的驅動程序包。
以上jar包放在WebContent\WEB-INF\lib下
web.xml--誰都知道這東西干嘛用的吧。
struts-config.xml --這個也不說了。
dwr.xml -- dwr的配置文件
weblogic.xml -- weblogic模塊配置文件。
還有一個struts的tld就不說了
以上文件放在WebContent\WEB-INF下面。
login.jsp -- 登陸界面，這里我也用到了dwr
showtable.jsp --登陸成功會轉到這個頁面，一個ajax表格。
showtable.js -- showtable.jsp中用到的javascript
main.css -- 不說了
還有 *.gif界面要到的圖片
以上文件放在WebContent下
剩下的就是java類了。
LoginAction.java --Struts的Action，負責登陸
TableAction.java --Struts的Action，負責表格內容初始化
UserLogic.java --負責驗證用戶
TableRowConverter.java -- 繼承于dwr的BeanConverter，負責將一個對象轉成javascript能用的東西。
LoginForm.java --Struts的Form，負責登陸信息
TableModelBean.java --TableModel一部分給struts用一部分給dwr用。
TableRowBean.java 用戶存放行信息的Bean。
ModelOneDAO.java --隨便取的名字，有點惡（三聲）。負責從數據庫操作的。
這個例子還需要一個數據庫，我用的是SQLServer。
下面是建表的SQL語句。輸入數據的SQL就不貼了太長了。我會弄個源碼下載的。
接下來是寫業務邏輯
Login.java
/*
?*?Created?on?2005-7-29
?*
?*?TODO?To?change?the?template?for?this?generated?file?go?to
?*?Window?-?Preferences?-?Java?-?Code?Style?-?Code?Templates
?
*/
package?org.mstar.strutsajax.action;
import?javax.servlet.http.HttpServletRequest;
import?javax.servlet.http.HttpServletResponse;
import?org.apache.struts.action.Action;
import?org.apache.struts.action.ActionForm;
import?org.apache.struts.action.ActionForward;
import?org.apache.struts.action.ActionMapping;
import?org.mstar.strutsajax.ajax.UserLogic;
import?org.mstar.strutsajax.form.LoginForm;
/*
*
?*?@author?matianyi
?*
?*?TODO?To?change?the?template?for?this?generated?type?comment?go?to
?*?Window?-?Preferences?-?Java?-?Code?Style?-?Code?Templates
?
*/
public
?
class
?LoginAction?extends?Action?
{
????
/*
?(non-Javadoc)
?????*?@see?org.apache.struts.action.Action#execute(org.apache.struts.action.ActionMapping,?org.apache.struts.action.ActionForm,?javax.servlet.http.HttpServletRequest,?javax.servlet.http.HttpServletResponse)
?????
*/
????
public
?ActionForward?execute(ActionMapping?mapping,?ActionForm?form,
????????????HttpServletRequest?request,?HttpServletResponse?response)?throws?Exception?
{
????????
if
(validateUser((LoginForm)form))
{
????????????
return
?mapping.findForward(
"
success
"
);????????????
????????}
?
else
?
{
????????????
return
?mapping.findForward(
"
failure
"
);
????????}
????????
????}
????
????
private
?boolean?validateUser(LoginForm?form)
{
????????UserLogic?userLogic?
=
?
new
?UserLogic();
????????
return
?userLogic.validate(form.getUsername(),form.getPassword());????????
????}
}
UserLogic.java
package?org.mstar.strutsajax.ajax;
/*
*
?*?@author?matianyi
?*
?*?TODO?To?change?the?template?for?this?generated?type?comment?go?to
?*?Window?-?Preferences?-?Java?-?Code?Style?-?Code?Templates
?
*/
public
?
class
?UserLogic?
{
????
public
?boolean?validate(String?username,String?password)
{
????????
if
(
"
mty
"
.equals(username)
&&
"
123
"
.equals(password))
{
????????????
return
?
true
;
????????}
?
else
?
{
????????????
return
?
false
;
????????}
????}
}
LoginForm.java
package?org.mstar.strutsajax.form;
import?org.apache.struts.action.ActionForm;
/*
*
?*?@author?matianyi
?*
?*?TODO?To?change?the?template?for?this?generated?type?comment?go?to
?*?Window?-?Preferences?-?Java?-?Code?Style?-?Code?Templates
?
*/
public
?
class
?LoginForm?extends?ActionForm?
{
????
private
?String?username;
????
private
?String?password;
????
/*
*
?????*?@return?Returns?the?password.
?????
*/
????
public
?String?getPassword()?
{
????????
return
?password;
????}
????
/*
*
?????*?@param?password?The?password?to?set.
?????
*/
????
public
?
void
?setPassword(String?password)?
{
????????
this
.password?
=
?password;
????}
????
/*
*
?????*?@return?Returns?the?username.
?????
*/
????
public
?String?getUsername()?
{
????????
return
?username;
????}
????
/*
*
?????*?@param?username?The?username?to?set.
?????
*/
????
public
?
void
?setUsername(String?username)?
{
????????
this
.username?
=
?username;
????}
}
TableRowBean.java
package?org.mstar.strutsajax.form;
/*
*
?*?@author?matianyi
?*
?*?TODO?To?change?the?template?for?this?generated?type?comment?go?to
?*?Window?-?Preferences?-?Java?-?Code?Style?-?Code?Templates
?
*/
public
?
class
?TableRowBean
{
????
private
?String?col1Value;
????
private
?String?col2Value;
????
private
?String?col3Value;
????
????
/*
*
?????*?@return?Returns?the?col1Value.
?????
*/
????
public
?String?getCol1Value()?
{
????????
return
?col1Value;
????}
????
/*
*
?????*?@param?col1Value?The?col1Value?to?set.
?????
*/
????
public
?
void
?setCol1Value(String?col1Value)?
{
????????
this
.col1Value?
=
?col1Value;
????}
????
/*
*
?????*?@return?Returns?the?col2Value.
?????
*/
????
public
?String?getCol2Value()?
{
????????
return
?col2Value;
????}
????
/*
*
?????*?@param?col2Value?The?col2Value?to?set.
?????
*/
????
public
?
void
?setCol2Value(String?col2Value)?
{
????????
this
.col2Value?
=
?col2Value;
????}
????
/*
*
?????*?@return?Returns?the?col3Value.
?????
*/
????
public
?String?getCol3Value()?
{
????????
return
?col3Value;
????}
????
/*
*
?????*?@param?col3Value?The?col3Value?to?set.
?????
*/
????
public
?
void
?setCol3Value(String?col3Value)?
{
????????
this
.col3Value?
=
?col3Value;
????}
}
上面的代碼都比較簡單，不用說大家也都知道是干什么用的。
下面就是主要的內容了。預知后事如何，且聽下回分解。
運行環境：
windows xp pro sp2
j2sdk1.2.4_03
weblogic8.1
struts1.2.4
開發工具eclipse3.0
其實dwr和struts沒有什么關系，只不過最近我們項目組在用struts作東西。我就順便用把我的程序建立在Struts上。
主要文件。
dwr.jar--dwr的類庫包
struts的類庫包，具體我不說了，這東西誰都知道。
jdts0.9.jar--數據庫SQLServer的驅動程序包。
以上jar包放在WebContent\WEB-INF\lib下
web.xml--誰都知道這東西干嘛用的吧。
struts-config.xml --這個也不說了。
dwr.xml -- dwr的配置文件
weblogic.xml -- weblogic模塊配置文件。
還有一個struts的tld就不說了
以上文件放在WebContent\WEB-INF下面。
login.jsp -- 登陸界面，這里我也用到了dwr
showtable.jsp --登陸成功會轉到這個頁面，一個ajax表格。
showtable.js -- showtable.jsp中用到的javascript
main.css -- 不說了
還有 *.gif界面要到的圖片
以上文件放在WebContent下
剩下的就是java類了。
LoginAction.java --Struts的Action，負責登陸
TableAction.java --Struts的Action，負責表格內容初始化
UserLogic.java --負責驗證用戶
TableRowConverter.java -- 繼承于dwr的BeanConverter，負責將一個對象轉成javascript能用的東西。
LoginForm.java --Struts的Form，負責登陸信息
TableModelBean.java --TableModel一部分給struts用一部分給dwr用。
TableRowBean.java 用戶存放行信息的Bean。
ModelOneDAO.java --隨便取的名字，有點惡（三聲）。負責從數據庫操作的。
這個例子還需要一個數據庫，我用的是SQLServer。
下面是建表的SQL語句。輸入數據的SQL就不貼了太長了。我會弄個源碼下載的。
/*
==============================================================
*/
/* ?DBMS?name:??????Microsoft?SQL?Server?2000???????????????????? */
/* ?Created?on:?????2005-8-1?13:21:33???????????????????????????? */
/* ============================================================== */
if ? exists ?( select ? 1
???????????? from ??sysobjects
??????????? where ??id? = ? object_id ( ' AJAX_MODEL_ONE ' )
???????????? and ???type? = ? ' U ' )
??? drop ? table ?AJAX_MODEL_ONE
go
/* ============================================================== */
/* ?Table:?AJAX_MODEL_ONE???????????????????????????????????????? */
/* ============================================================== */
create ? table ?AJAX_MODEL_ONE?(
???col1????????????????? int ?????????????????? not ? null ,
???col2????????????????? int ?????????????????? not ? null ,
???col3????????????????? int ?????????????????? not ? null ,
??? constraint ?PK_AJAX_MODEL_ONE? primary ? key ??(col1)
)
go
/* ?DBMS?name:??????Microsoft?SQL?Server?2000???????????????????? */
/* ?Created?on:?????2005-8-1?13:21:33???????????????????????????? */
/* ============================================================== */
if ? exists ?( select ? 1
???????????? from ??sysobjects
??????????? where ??id? = ? object_id ( ' AJAX_MODEL_ONE ' )
???????????? and ???type? = ? ' U ' )
??? drop ? table ?AJAX_MODEL_ONE
go
/* ============================================================== */
/* ?Table:?AJAX_MODEL_ONE???????????????????????????????????????? */
/* ============================================================== */
create ? table ?AJAX_MODEL_ONE?(
???col1????????????????? int ?????????????????? not ? null ,
???col2????????????????? int ?????????????????? not ? null ,
???col3????????????????? int ?????????????????? not ? null ,
??? constraint ?PK_AJAX_MODEL_ONE? primary ? key ??(col1)
)
go
Login.java
/*
?*?Created?on?2005-7-29
?*
?*?TODO?To?change?the?template?for?this?generated?file?go?to
?*?Window?-?Preferences?-?Java?-?Code?Style?-?Code?Templates
?
*/
package?org.mstar.strutsajax.action;
import?javax.servlet.http.HttpServletRequest;
import?javax.servlet.http.HttpServletResponse;
import?org.apache.struts.action.Action;
import?org.apache.struts.action.ActionForm;
import?org.apache.struts.action.ActionForward;
import?org.apache.struts.action.ActionMapping;
import?org.mstar.strutsajax.ajax.UserLogic;
import?org.mstar.strutsajax.form.LoginForm;
/*
*
?*?@author?matianyi
?*
?*?TODO?To?change?the?template?for?this?generated?type?comment?go?to
?*?Window?-?Preferences?-?Java?-?Code?Style?-?Code?Templates
?
*/
public
?
class
?LoginAction?extends?Action?
{
????
/*
?(non-Javadoc)
????
?????*?@see?org.apache.struts.action.Action#execute(org.apache.struts.action.ActionMapping,?org.apache.struts.action.ActionForm,?javax.servlet.http.HttpServletRequest,?javax.servlet.http.HttpServletResponse)
?????
*/
????
public
?ActionForward?execute(ActionMapping?mapping,?ActionForm?form,
????????????HttpServletRequest?request,?HttpServletResponse?response)?throws?Exception?
{
????????
if
(validateUser((LoginForm)form))
{
????????????
return
?mapping.findForward(
"
success
"
);????????????
????????}
?
else
?
{
????????????
return
?mapping.findForward(
"
failure
"
);
????????}
????????
????}
????
????
private
?boolean?validateUser(LoginForm?form)
{
????????UserLogic?userLogic?
=
?
new
?UserLogic();
????????
return
?userLogic.validate(form.getUsername(),form.getPassword());????????
????}
}
package?org.mstar.strutsajax.ajax;
/*
*
?*?@author?matianyi
?*
?*?TODO?To?change?the?template?for?this?generated?type?comment?go?to
?*?Window?-?Preferences?-?Java?-?Code?Style?-?Code?Templates
?
*/
public
?
class
?UserLogic?
{
????
public
?boolean?validate(String?username,String?password)
{
????????
if
(
"
mty
"
.equals(username)
&&
"
123
"
.equals(password))
{
????????????
return
?
true
;
????????}
?
else
?
{
????????????
return
?
false
;
????????}
????}
}
package?org.mstar.strutsajax.form;
import?org.apache.struts.action.ActionForm;
/*
*
?*?@author?matianyi
?*
?*?TODO?To?change?the?template?for?this?generated?type?comment?go?to
?*?Window?-?Preferences?-?Java?-?Code?Style?-?Code?Templates
?
*/
public
?
class
?LoginForm?extends?ActionForm?
{
????
private
?String?username;
????
private
?String?password;
????
/*
*
?????*?@return?Returns?the?password.
?????
*/
????
public
?String?getPassword()?
{
????????
return
?password;
????}
????
/*
*
?????*?@param?password?The?password?to?set.
?????
*/
????
public
?
void
?setPassword(String?password)?
{
????????
this
.password?
=
?password;
????}
????
/*
*
?????*?@return?Returns?the?username.
?????
*/
????
public
?String?getUsername()?
{
????????
return
?username;
????}
????
/*
*
?????*?@param?username?The?username?to?set.
?????
*/
????
public
?
void
?setUsername(String?username)?
{
????????
this
.username?
=
?username;
????}
}
package?org.mstar.strutsajax.form;
/*
*
?*?@author?matianyi
?*
?*?TODO?To?change?the?template?for?this?generated?type?comment?go?to
?*?Window?-?Preferences?-?Java?-?Code?Style?-?Code?Templates
?
*/
public
?
class
?TableRowBean
{
????
private
?String?col1Value;
????
private
?String?col2Value;
????
private
?String?col3Value;
????
????
/*
*
?????*?@return?Returns?the?col1Value.
?????
*/
????
public
?String?getCol1Value()?
{
????????
return
?col1Value;
????}
????
/*
*
?????*?@param?col1Value?The?col1Value?to?set.
?????
*/
????
public
?
void
?setCol1Value(String?col1Value)?
{
????????
this
.col1Value?
=
?col1Value;
????}
????
/*
*
?????*?@return?Returns?the?col2Value.
?????
*/
????
public
?String?getCol2Value()?
{
????????
return
?col2Value;
????}
????
/*
*
?????*?@param?col2Value?The?col2Value?to?set.
?????
*/
????
public
?
void
?setCol2Value(String?col2Value)?
{
????????
this
.col2Value?
=
?col2Value;
????}
????
/*
*
?????*?@return?Returns?the?col3Value.
?????
*/
????
public
?String?getCol3Value()?
{
????????
return
?col3Value;
????}
????
/*
*
?????*?@param?col3Value?The?col3Value?to?set.
?????
*/
????
public
?
void
?setCol3Value(String?col3Value)?
{
????????
this
.col3Value?
=
?col3Value;
????}
}
下面就是主要的內容了。預知后事如何，且聽下回分解。
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