Spring+dwr

Spring+dwr

Spring配置

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">

<beans>
 
 <bean id="empService" class="com.hibernate.dao.EmpService" autowire="byName"></bean>
 
</beans>

 

dwr.xml

<?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="EmpService">
 <param name="class"  value="com.hibernate.dao.EmpService" ></param>
 <include method="checkName" /> <!--  只公布该方法 -->
</create>

<!-- 与Spring框架集成 -->
<create creator="spring" javascript="empService">
 <param name="beanName"  value="empService" /> 
 <include method="checkName" />
</create>

</allow>
</dwr>

web.xml

<!-- DWR   -->
 <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>

 <context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>
   /WEB-INF/classes/applicationContext.xml
  </param-value>
 </context-param>
 <listener>
  <listener-class>
   org.springframework.web.context.ContextLoaderListener
  </listener-class>
 </listener>

 

 

DAO:EmpService.java

public boolean checkName(String userName) {

  String hql = "from ZzEmployee e where e.empName='"+userName+"'";
  List list_emp = getHibernateTemplate().find(hql);
  if (list_emp != null & !list_emp.isEmpty()) {
   return true;
  } else {
   return false;
  }
 }

 

页面

<script type="text/javascript"  src="prototype.js"></script>
<script type="text/javascript"  src="dwr/engine.js"></script>
<script type="text/javascript"  src="dwr/util.js"></script>
<script type="text/javascript"  src="dwr/interface/EmpService.js"></script>
<script type="text/javascript">
  function callback(str){
   if(str==true){
    $('msg').innerHTML = "用户名已存在！";
   }else{
    $('msg').innerHTML = "用户名可用！";
   }
   
   
  }
  function callService(){
      var fmsg = $('empName').value;  
   EmpService.checkName(fmsg,callback);
  }
 </script>

<html:text property="empName" onblur="callService()"/><div id="msg"></div>