Jquery getJSON 不适用于 Spring MVC

发布于 2024-11-30 09:09:59 字数 1723 浏览 4 评论 0原文

以下代码无法将请求提交到服务器，我无法弄清楚为什么。

这是我的jsp页面的一部分

 $(document).ready(function() {
    $('#firstName').change(function() {
        if(('#firstName').val().length >= 2){
                $.getJSON(
                   "getPSPersons.html", 
                   { firstName: $('#firstName').val(), lastName: $('#lastName').val()},
                   function(data) {
                     buildTable(data);
                   }
                );
         }
     });
  });
   -------------------------------
 <form:form name="addperson" method="GET">
      <label for="firstName">First Name</label> &nbsp;
      <input type="text" name="firstName" id="firstName" size="15"/>  &nbsp; &nbsp;
      <label for="lastName">Last Name</label> &nbsp;
      <input type="text" name="lastName" id="lastName" size="15"/>
  </form:form>

，Spring控制器类功能

   @RequestMapping(value="getPSPersons.html", method = RequestMethod.GET)
   public @ResponseBody List<Person> getPersonsWithNames(
         @RequestParam("firstName") String firstName, @RequestParam("lastName") String lastName) 
   {
       List<Person> personList = new ArrayList<Person>();
          if(firstName.length()>=2 || lastName.length() >=2)
    {
                 personList = personService.getPersonsWithName(firstName, lastName);
    }
          return personList;
    }

要求是，当用户在“名字”输入框中输入多个字符时，应向服务器提交一个AJAx请求以获取名字以这些字母开头的所有人员...但是这里的 get 请求永远不会调用这个函数..我很确定 JQuery 请求端出了问题，但我找不到它是什么..

-----更新---------

发现错误..在第 3 行，它应该是 if($('#firstName').val().length >= 2){ 开头的 $ 丢失了

原文

Following code is not able to submit the request to server and I am unable to figure out why.

here is part of my jsp page

 $(document).ready(function() {
    $('#firstName').change(function() {
        if(('#firstName').val().length >= 2){
                $.getJSON(
                   "getPSPersons.html", 
                   { firstName: $('#firstName').val(), lastName: $('#lastName').val()},
                   function(data) {
                     buildTable(data);
                   }
                );
         }
     });
  });
   -------------------------------
 <form:form name="addperson" method="GET">
      <label for="firstName">First Name</label>  
      <input type="text" name="firstName" id="firstName" size="15"/>     
      <label for="lastName">Last Name</label>  
      <input type="text" name="lastName" id="lastName" size="15"/>
  </form:form>

And the Spring controller class function

   @RequestMapping(value="getPSPersons.html", method = RequestMethod.GET)
   public @ResponseBody List<Person> getPersonsWithNames(
         @RequestParam("firstName") String firstName, @RequestParam("lastName") String lastName) 
   {
       List<Person> personList = new ArrayList<Person>();
          if(firstName.length()>=2 || lastName.length() >=2)
    {
                 personList = personService.getPersonsWithName(firstName, lastName);
    }
          return personList;
    }

requirement is that when the user enter more than one character in "firstname" input box, an AJAx request should be submitted to the server to get all persons whose firstname starts with those letters...but here the get request never calls this functions.. I am pretty sture something's wrong on JQuery request side but I can't find what it is..

-----update---------

found the error.. on line 3 it should have been
if($('#firstName').val().length >= 2){
that $ at the beginning was missing

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