Ajax 框架之SSM整合框架實現ajax校驗

來源：懂視網責編：小采時間：2020-11-27 22:51:39

Ajax 框架之SSM整合框架實現ajax校驗

Ajax 框架之SSM整合框架實現ajax校驗:剛學習了ssm框架,ajax校驗成功,分享下 1.導入jar包 2.配置spring-servlet.xml <bean class=org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter> <property na

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導讀Ajax 框架之SSM整合框架實現ajax校驗:剛學習了ssm框架,ajax校驗成功,分享下 1.導入jar包 2.配置spring-servlet.xml <bean class=org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter> <property na

剛學習了ssm框架,ajax校驗成功,分享下

1.導入jar包

2.配置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>

3.控制器中用@ResponseBody實現返回json數據格式

@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;
 }

4.頁面中接收查詢到的結果

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

實現結果就是以下這樣的: