Ajax framework's SSM integration framework implements ajax verification-JS Tutorial-php.cn

Ajax framework's SSM integration framework implements ajax verification

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Release： 2018-05-22 15:49:28

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This article mainly introduces the SSM integration framework of the Ajax framework to implement ajax verification. Friends who need it can refer to it

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1. Import jar package

2. Configure spring-servlet.xml

<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> 
       <property name="messageConverters"> 
         <list> 
           <ref bean="mappingJackson2HttpMessageConverter" /> 
         </list> 
       </property> 
     </bean> 
     <bean id="mappingJackson2HttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> 
       <property name="supportedMediaTypes"> 
         <list> 
           <value>text/html;charset=UTF-8</value> 
           <value>text/json;charset=UTF-8</value> 

       <value>application/json;charset=UTF-8</value>          </list> 
       </property> 
     </bean>

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3. Use @ResponseBody in the controller to implement the returned json data format

@ResponseBody
   @RequestMapping(value="queryByUser", method=RequestMethod.POST,produces="application/json;charset=UTF-8") 
   public User queryByName(User user,HttpServletRequest request){
     User u = userBiz.queryByName(user);
     return u;
   }

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4. Receive the query results on the page

function checkUser(){
     var username=$("#username").val();
     
     $.ajax({
       url:"queryByUser",
       type:"post",
       data:{"username":username},
       dataType:"json",
      success:function(data){
         if (data!=null ) {
         $("#userSpan").text("用户名已存在");
         $("#username").val(&#39;&#39;);
       }else if(data==null && username !=&#39;&#39;){
         $("#userSpan").text("用户名可用");
       }
      }
     });
   }

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The implementation result is as follows Like this:

#The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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