dwr dwr配置

1.项目目录\WebRoot\WEB-INF\lib下方dwr.jar

2.项目目录\WebRoot\WEB-INF下建立dwr.xml
dwr.xml内容:

<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN" "http://www.getahead.ltd.uk/dwr//dwr20.dtd">

<dwr>
    <allow>
        <create creator="new" javascript="TestDwr">
            <param name="class" value="dwr.TestDwr"/>
        </create>
    </allow>
</dwr>

3.web.xml里配置

<servlet>
	<servlet-name>dwr-invoker</servlet-name>
	<servlet-class>uk.ltd.getahead.dwr.DWRServlet</servlet-class>
	<init-param>
		<param-name>debug</param-name>
		<param-value>false</param-value>
	</init-param>
	<init-param>
		<param-name>logLevel</param-name>
		<param-value>WARN</param-value>
	</init-param>
</servlet>
<servlet-mapping>
	<servlet-name>dwr-invoker</servlet-name>
	<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>

4.建立一个TestDwr.java

TestDwr.java内容

package dwr;

public class TestDwr {
	public String getStr(String str)
	{
		return str;
	}
}

5.建立一个testDwr.jsp

testDwr.jsp内容

<script src='/dwr/interface/TestDwr.js'> </script>
<script src='/dwr/engine.js'> </script>
<script src='/dwr/util.js'> </script>
<script type="text/javascript">
function getDwr(){
    TestDwr.getStr("helloDwr!",alertStr);
}
function alertStr(str){
    alert(str);
}
</script>

<input type="button" onclick="getDwr()" value="测试dwr"/>

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