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瀹冨彲浠ヨ浣犲湪嫻忚鍣ㄤ腑鐨凧avascript浠ｇ爜璋冪敤Web鏈嶅姟鍣ㄤ笂鐨凧ava 浠ｇ爜錛屽氨鍍忓湪Java浠ｇ爜灝卞湪嫻忚鍣ㄤ腑涓鏍楓?
DWR鍖呭惈 2涓富瑕侀儴鍒嗭細
涓涓繍琛屽湪鏈嶅姟鍣ㄧ鐨凧ava Servlet錛屽畠澶勭悊璇鋒眰騫朵笖鍚戞祻瑙堝櫒鍙戝洖鍝嶅簲銆?/span>
涓涓繍琛屽湪嫻忚鍣ㄧ鐨凧avaScript錛屽畠鍙戦佽姹傝屼笖榪樿兘鍔ㄦ佹洿鏂扮綉欏點?
DWR宸ヤ綔鍘熺悊鏄氳繃鍔ㄦ佹妸Java綾葷敓鎴愪負Javascript銆傚畠鐨勪唬鐮佸氨鍍廇jax欖旀硶涓鏍鳳紝浣犳劅瑙夎皟鐢ㄥ氨鍍忓彂
鐢熷湪嫻忚鍣ㄧ錛屼絾鏄疄闄呬笂浠ｇ爜璋冪敤鍙戠敓鍦ㄦ湇鍔″櫒绔紝DWR璐熻矗鏁版嵁鐨勪紶閫掑拰杞崲銆傝繖縐嶄粠Java 鍒?/span>
JavaScript鐨勮繙紼嬭皟鐢ㄥ姛鑳界殑鏂瑰紡浣緿WR鐢ㄨ搗鏉ユ湁縐嶉潪甯稿儚RMI鎴栬匰OAP鐨勫父瑙凴PC鏈哄埗錛岃屼笖DWR
鐨勪紭鐐瑰湪浜庝笉闇瑕佷換浣曠殑緗戦〉嫻忚鍣ㄦ彃浠跺氨鑳借繍琛屽湪緗戦〉涓娿?
Java浠庢牴鏈笂璁叉槸鍚屾鏈哄埗錛岀劧 AJAX鍗存槸寮傛鐨勩傛墍浠ヤ綘璋冪敤榪滅▼鏂規硶鏃訛紝褰撴暟鎹凡緇忎粠緗戠粶涓婅繑鍥?/span>
鐨勬椂鍊欙紝浣犺鎻愪緵鏈夊弽璋?錛坈allback錛?鍔熻兘鐨凞WR銆?/span>
絎?1涓?DWR 渚嬪瓙錛欻ello World
1) 浠庡畼鏂圭綉绔欎笅杞絛wr.jar鍖呫傜劧鍚庡皢瀹冩斁鍦ㄤ綘 webapp 鐨?WEB-INF/lib鐩綍涓嬨?/span>
2) 淇敼web.xml,濡備笅
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app id="dwr">
<display-name>DWR (Direct Web Remoting)</display-name>
<description>A Simple Demo DWR</description>
<servlet>
<servlet-name>dwr-invoker</servlet-name>
<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>dwr-invoker</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
</web-app>
3) 鍦╓EB-INF涓嬫柊寤篸wr.xml,鍐呭濡備笅
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN" "http://getahead.org/dwr/dwr20.dtd">
<dwr>
<allow>
<create creator="new" javascript="service">
<param name="class"
value="helloworld.Service"/>
</create>
</allow>
</dwr>
4) 鍚姩web鏈嶅姟鍣紝璁塊棶http://localhost/宸ョ▼/dwr ,欏甸潰緇撴灉鏄劇ず涓?/span>
Classes known to DWR:
* service (helloworld.Service)
5) 鐐瑰嚮榪涘叆 *service,鐪嬪埌鎻愮ず....
Methods For: service (helloworld.Service)
To use this class in your javascript you will need the following script includes:
<script type='text/javascript' src='/TestDWR/dwr/interface/service.js'></script>
<script type='text/javascript' src='/TestDWR/dwr/engine.js'></script>
In addition there is an optional utility script:
<script type='text/javascript' src='/TestDWR/dwr/util.js'></script>
Replies from DWR are shown with a yellow background if they are simple or in an alert box otherwise.
The inputs are evaluated as Javascript so strings must be quoted before execution.
There are 10 declared methods:
* sayHello( );
* hashCode( );
(Warning: hashCode() is excluded: Methods defined in java.lang.Object are not accessible. See below)
* getClass( );
(Warning: No Converter for java.lang.Class. See below)
(Warning: getClass() is excluded: Methods defined in java.lang.Object are not accessible. See below)
* wait( );
(Warning: overloaded methods are not recommended. See below)
(Warning: wait() is excluded: Methods defined in java.lang.Object are not accessible. See below)
* wait( , );
(Warning: overloaded methods are not recommended. See below)
(Warning: wait() is excluded: Methods defined in java.lang.Object are not accessible. See below)
* wait( );
(Warning: overloaded methods are not recommended. See below)
(Warning: wait() is excluded: Methods defined in java.lang.Object are not accessible. See below)
* equals( );
(Warning: No Converter for java.lang.Object. See below)
(Warning: equals() is excluded: Methods defined in java.lang.Object are not accessible. See below)
* notify( );
(Warning: notify() is excluded: Methods defined in java.lang.Object are not accessible. See below)
* notifyAll( );
(Warning: notifyAll() is excluded: Methods defined in java.lang.Object are not accessible. See below)
* toString( );
(Warning: toString() is excluded: Methods defined in java.lang.Object are not accessible. See below)
6)鍒涘緩jsp錛屽唴瀹瑰涓?/span>
<%@ page language="java" pageEncoding="UTF-8"%>
<html>
<head>
<script type='text/javascript' src='dwr/interface/service.js'></script>
<script type='text/javascript' src='dwr/engine.js'></script>
<script type='text/javascript' src='dwr/util.js'></script>
</script>
<script type="text/javascript">
function firstDwr(){
service.sayHello(" Test ",callBackHello);
}
function callBackHello(data){
alert(data);
}
</script>
</head>
<body>
<input type="button" name="button" value="嫻嬭瘯" onclick="firstDwr()">
</body>
</html>
褰撶偣鍑?嫻嬭瘯"鏃訛紝灝卞嚭鐜扮粨鏋滀簡.
鎬葷粨:
1.鍦╳eb.xml涓姞鍏wr servlet
2.鍦╠rw.xml涓寚鏄庝綘瑕佽皟鐢ㄧ殑綾?騫舵寚鏄庣敓鎴愮殑javascript鍚?/span>
<create creator="new" javascript="service">
<param name="class" value="helloworld.Service"/>
</create>
3.瀹屾垚瀵瑰簲鐨勭被
4.鍦╤tml/jsp涓啓javascript鍑芥暟錛岃皟鐢╦ava鏈嶅姟鍣ㄧ鐨勬柟娉曪紝騫跺啓澶勭悊緇撴灉鐨勫洖璋冨嚱鏁?/span>
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鍏朵腑涓嶅皯閮芥槸澶у皬鍐欍侀厤緗枃浠剁殑璁劇疆涓嶅綋瀵艱嚧 , 涓嬮潰灝辨葷粨涓涓嬩粖澶╅亣鍒扮殑闂鍙婅В鍐沖姙娉?/span> .
涓 鍩烘湰姝ラ濡備笅 ( 鏂囨。涓凡緇忔彁鍒?/span> )
1. 鏍規嵁 Hibernate Tools 鐢熸垚瀵瑰簲鐨?/span> domain 瀵硅薄
2. 淇敼 dataAccessContext-hibernate.xml, 灝嗕綘鐨勬柊 domain 瀵硅薄鍔犲叆
< property name = "annotatedClasses" > 涓?/span>
3. 鐢熸垚瀵硅薄鐨?/span> xxxManager 綾誨悗 , 涓瀹氳娉ㄦ剰綾諱腑鐨勬硾褰?/span> , 騫朵笖娉ㄦ剰鐢熸垚鏂規硶鐨勫悕縐?/span>
4. 鐢熸垚瀵硅薄鐨?/span> xxxManagerTest 綾?/span> ,
5. 淇敼 src/recources/spring / serviceContext.xml, 鍔犲叆 xxxManager, 鐢變簬浣跨敤 byName 榪涜鐨勬敞鍏ワ紝鎵浠ラ厤緗枃浠舵瘮杈冪畝鍗?/span>
6. 鐢熸垚 web 涓婄殑 xxxAction, 涓瀹氳娉ㄦ剰娉涘艦 , 騫朵笖娉ㄦ剰鐢熸垚鏂規硶鐨勫悕縐?/span>
7. 淇敼 struts-config(-module).xml, 娣誨姞鐢熸垚鐨?/span> xxxAction
浜?/span> 甯歌閿欒
1. 濡傛灉閰嶇疆鏂囦歡鍐欑殑鏈夐棶棰橈紝涓鑸細鎻愮ず ”nested Exception” 鐨勯敊璇?/span>
2. 閰嶇疆 ServiceContext.xml 鏃訛紝涓瀹氳娉ㄦ剰澶у皬鍐欓棶棰?/span>
<
bean
id
=
"orderManager"
class
=
"org.wl.service.OrderManager"
/>
浠婂ぉ灝辨妸
id
鐨勫煎啓鎴愪簡綾誨悕縐?/span>
OrderManager,
緇撴灉鎻愮ず閿欒
”Error Create Bean……”
3. 鎴戜嬌鐢ㄧ殑 mysql, 鐢ㄦ埛涓?/span> root, 浣嗘槸灝?/span> Jdbc.properties 閰嶇疆鏂囦歡涓敤鎴峰悕鍐欐垚浜?/span> sa,
緇撴灉鍙互璁塊棶鏁版嵁搴擄紝褰撳湪 web 鐣岄潰涓婄偣鍑?/span> save 錛屾彁浜ゅ悗鎻愮ず “no row with the given identifier exists”
4. 濡傛灉闇瑕佷嬌鐢?/span> extremeTable, 璁板緱鍦?/span> jsp 涓紩鐢?/span>
<%@ taglib uri="http://www.extremecomponents.org" prefix="ec" %>
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