SSM整合框架实现ajax校验
刚学习了ssm框架,ajax校验成功,分享下
1.导入jar包
2.配置spring-servlet.xml
1 <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> 2 <property name="messageConverters"> 3 <list> 4 <ref bean="mappingJackson2HttpMessageConverter" /> 5 </list> 6 </property> 7 </bean> 8 <bean id="mappingJackson2HttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> 9 <property name="supportedMediaTypes"> 10 <list> 11 <value>text/html;charset=UTF-8</value> 12 <value>text/json;charset=UTF-8</value> 13 <value>application/json;charset=UTF-8</value> 14 </list> 15 </property> 16 </bean>
3.控制器中用@ResponseBody实现返回json数据格式
1 @ResponseBody2@RequestMapping(value="queryByUser", method=RequestMethod.POST,produces="application/json;charset=UTF-8") 3public User queryByName(User user,HttpServletRequest request){4 User u = userBiz.queryByName(user);5 return u;6}
4.页面中接收查询到的结果
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('');}else if(data==null && username !=''){$("#userSpan").text("用户名可用");}}});}
实现结果就是以下这样的:
