Java Web中的DWR开发步骤

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DWR开发步骤

1. 加jar包,把jar包粘贴到lib里

2. 在web.xml中配置DWR

       <servlet>

              <servlet-name>LeeMyDWR</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>LeeMyDWR</servlet-name>

              <url-pattern>/dwr/*</url-pattern>

       </servlet-mapping>

3.创建一个普通的类,当作DWR的服务类  示:com.fs.dwr.UserDWR.java

4.配置DWR的服务类

       (1)在WEB-INF中创建dwr.xml文件

       (2)内容示例:

              <?xml version="1.0"encoding="UTF-8"?>

              <!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="userDWR">

            <param name="class"value="com.fs.dwr.UserDWR" />

       </create>   

   </allow>

</dwr>

5.测试   可省...

  (1)发布项目,打开tomcat

  (2)输入测试网址进入测试网页.....

     http://ip:port/项目名/dwr

6.在jsp中使用DWR

       (1)在jsp的<head>标签中导入js文件,示例

              <script type='text/javascript'src='/DWR5_2/dwr/interface/userDWR.js'></script>

              <script type='text/javascript'src='/DWR5_2/dwr/engine.js'></script>

              <script type='text/javascript'src='/DWR5_2/dwr/util.js'></script>


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