jQuery网格中的Spring请求映射

Question

我想在jquery网格脚本的POJO类中调用方法。

jQuery("#list2").jqGrid({

    datatype: "json",
    url:"/showStudent.do",
    type:"",
    colNames:['Student Name','Age', 'Mobile'],
    colModel:[
        {name:'name',index:'id', width:55,formatter:custom_func},
        {name:'age', width:90},
        {name:'mobile', width:100},
        ],
    rowNum:10,
    rowList:[10,20,30],

    sortname: 'id',
    viewrecords: true,
    sortorder: "desc",
    caption:"Student List"
});

因此，以上默认情况下查找get方法，但目标类没有该方法

@RequestMapping("/showStudent.do")
public String showEnrolledStudent(Model model)
{
    PersistenceManager pm=PMF.get().getPersistenceManager();
    Query query=pm.newQuery(Student.class);
    JSONArray studentListJson=new JSONArray();
    try
    {
        List<Student> listOfStudent=(List<Student>) query.execute(); 
        for(Student student:listOfStudent)
        {
            JSONObject jsonObject=new JSONObject();
            jsonObject.put("name", student.getName());
            jsonObject.put("age", student.getAge());
            jsonObject.put("mobile", student.getMobile());
            studentListJson.put(jsonObject);

        }
    }
    catch (Exception e) {
    }
    System.out.println("hi");
    System.out.println(studentListJson);
    return studentListJson.toString();
}

那么如何使jquery网格url之间的绑定调用showEnrolledStudent（）方法。

Answer 1

如果要按原样返回JSON，则应使用@ResponseBody批注。 否则， DispatcherServlet会尝试识别View ，而他无法做到这一点。

@RequestMapping("/showStudent.do")
@ResponseBody
public String showEnrolledStudent(Model model){
...

Answer 2

用于具有Http get请求和http Post请求方法属性的请求映射注释的映射方法

@RequestMapping(method=RequestMethod.GET,value="/showStudent.do")
@ResponseBody
public String showEnrolledStudent()
{
    //This will get persistence manager for datastore interaction
    PersistenceManager pm=PMF.get().getPersistenceManager();
    //Query for selecting list of student enrolled
    Query query=pm.newQuery(Student.class);
    //Json array holds the json objects.
    JSONArray studentListJson=new JSONArray();
    try
    {
        List<Student> listOfStudent=(List<Student>) query.execute();
        //Loop to create the list of student in json format
        for(Student student:listOfStudent)
        {
            JSONObject jsonObject=new JSONObject();
            jsonObject.put("key", student.getKey().getId());
            jsonObject.put("name", student.getName());
            jsonObject.put("age", student.getAge());
            jsonObject.put("mobile", student.getMobile());
            studentListJson.put(jsonObject);

        }
    }
    catch (Exception e) {
    }
        return studentListJson.toString();
}

}