1、首先需要引入dwr.jar包到工程中的lib中；2、在web.xml中配置dwr，如下：<！―― DWR配置 ――>
<servlet>
<servlet-name>dwr-invoker</servlet-name>
<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
<init-param>
<param-name>scriptCompressed</param-name>
<param-value>false</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>dwr-invoker</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
3、然后在WEB-INF下创建一个dwr.xml，并在里面将调用处理类配置，例如：<dwr> <allow> <convert match="com.po.OneSearchDto" converter="bean"> <param name="include" value="resname，resid"></param> </convert>
<create javascript="GetDataBaseRes" creator="new"> <param name="class" value="com.util.GetDataBaseRes"></param> <include method="getDataBaseRes"/> </create>
</allow> </dwr>
4、然后在需要调用的jsp中，将调用处理js类引入，如下：<% String contextPath = request.getContextPath（）；%> <script type=text/javascript src=<%=contextPath %>/dwr/interface/GetDataBaseRes.js></script> <script type=text/javascript src=<%=contextPath %>/dwr/engine.js></script> <script type=text/javascript src=<%=contextPath %>/dwr/util.js></script>
调用的js例子如下：function query（）{ var keyWord = document.getElementById（"keyWord"）。value；var dataStr = ""；var arr = document.getElementsByName（"checkboxData"）；for（var i=0；i<arr.length；i++）{ if（arr[i].checked）{ dataStr+="，"+arr[i].value；} GetDataBaseRes.getDataBaseRes（keyWord，dataStr，disPoseRes）；
}
function disPoseRes（str）{ alert（str）；}
5、如果需要在dwr调用类中获得session，或者request，如下：org.directwebremoting.WebContext wc = org.directwebremoting.WebContextFactory.get（）；HttpSession session = wc.getSession（）；HttpServletRequest request = wc.getHttpServletRequest（）；
