Java Spring MVC控制器一次单击即可工作2次

我正在尝试使用Spring MVC进行分页。我的控制器通过ajax接收2个参数： -每页显示多少个元素（行） -选择了哪个页面

@Controller
public class SymptomController {

@Autowired
private SymptomService symptomService;

@RequestMapping(value = "/symptoms", method = RequestMethod.GET)
public String symptomPage(
    @RequestParam(required = false, value = "rows") Integer rows,
    @RequestParam(required = false, value = "page") Integer tabNumber,
    Model model) {
Page<Symptom> page = null;
if ((rows == null) && (tabNumber == null)) {
    page = symptomService.findSymptomsByPage(0, 10);
    System.out.println(1);
} else {
    page = symptomService.findSymptomsByPage(tabNumber - 1, rows);
    System.out.println(rows + "  " + tabNumber);
}
int currentPage = page.getNumber() + 1;
int first = Math.max(1, currentPage - 3);
int last = Math.min(currentPage + 2, page.getTotalPages());

model.addAttribute("symptom", new Symptom());
model.addAttribute("symptomPage", page);
model.addAttribute("currentPage", currentPage);
model.addAttribute("first", first);
model.addAttribute("last", last);
return "symptoms";
}

---

这就解释了控制器在一次点击时工作两次。请告诉我如何使控制器正常工作。

我认为浏览器发送了两次相同的请求：

• 一旦使用您编写的javascript代码
• 使用

  上的本机单击事件
  
  
  $（文档）.ready（函数（事件）{
  event.preventDefault（）；
  var pads=$（'ul.pagination'）.children（）；
  pads.click（函数（）{
  $.ajax({
  键入：“GET”，
  url:“/hospital/Symps”，
  数据：{rows:parseInt（$（'#select'）.text（）），page:parseInt（$（this.text（））}，
  });
  });
  });
  我通过在parrent标记上使用.on函数解决了这个问题，将arrguments'click'、'li>span'，function（）{}作为arrguments。现在很好用。但我感谢你的回答。我也会尝试这种方法。
  <table id="table-methods-table"
          class="table table-hover table-bordered">
          <thead>
              <tr style="background-color: #F5F5F5">
                  <th data-field="state" data-checkbox="false" data-align="center"></th>
                  <th data-field="editBtn" data-align="center"><spring:message
                          code="label.editsymptom" /></th>
                  <th data-field="name" data-sortable="true" data-align="left"><spring:message
                          code="label.symptoms" /></th>
                  <th data-field="description" data-sortable="true" data-align="left"><spring:message
                          code="label.descpiption" /></th>
                  <!--<th data-field="operate" data-formatter="operateFormatter" data-events="operateEvents">Delete</th>-->
              </tr>
          </thead>
          <tbody id="tbody">
              <c:forEach items="${symptomPage.content}" var="symptom">
                  <tr>
                      <td class="bs-checkbox"><input name="SelectItem"
                          type="checkbox"></td>
                      <td><a href="#edit" data-toggle="modal"> <i
                              class="fa fa-pencil-square-o"></i></a></td>
                      <td>${symptom.name}</td>
                      <td><i>${symptom.description}</i></td>
                  </tr>
              </c:forEach>
          </tbody>
      </table>
  </div>
  <ul class="pagination no-margin pull-right">
      <c:choose>
          <c:when test="${currentPage == 1}">
              <li class="inactive"><a href="#">&laquo;</a></li>
              <li class="inactive"><a href="#">&lt;</a></li>
          </c:when>
          <c:otherwise>
              <li><a href="${firstURL}">&laquo;</a></li>
              <li><a href="${prevURL}">&lt;</a></li>
          </c:otherwise>
      </c:choose>
      <c:forEach var="i" begin="${first}" end="${last}">
          <c:url var="pageUrl" value="/symptoms" />
          <c:choose>
              <c:when test="${i == currentPage}">
                  <li class="active"><a href="${pageUrl}"><c:out value="${i}"></c:out></a></li>
              </c:when>
              <c:otherwise>
                  <li><a href="${pageUrl}"><c:out value="${i}"></c:out></a></li>
              </c:otherwise>
          </c:choose>
      </c:forEach>
      <c:choose>
          <c:when test="${currentPage != last}">
              <li><a href="${nextURL}">&gt;</a></li>
              <li><a href="${lastURL}">&raquo;</a></li>
          </c:when>
          <c:otherwise>
              <li class="inactive"><a href="#">&gt;</a></li>
              <li class="inactive"><a href="#">&raquo;</a></li>
          </c:otherwise>
      </c:choose>
  </ul>
  <select id="select" class="form-control"
      style="width: 80px; margin-top: 18px;">
      <option selected="selected">10</option>
      <option>25</option>
      <option>50</option>
      <option>100</option>
  </select>
  <script>
      $(document).ready(function() {
      var pads = $('ul.pagination').children();
      pads.click(function() {
          $.ajax({
              type: 'GET',
              url : "/hospital/symptoms",
              data: {rows: parseInt($('#select').text()), page: parseInt($(this).text())},
          });
      });
      });
  </script>
  
      Hibernate: select count(symptom0_.id) as col_0_0_ from symptoms symptom0_
  Hibernate: select symptom0_.id as id16_, symptom0_.symptom_description as symptom2_16_, symptom0_.symptom_name as symptom3_16_ from symptoms symptom0_ limit ?, ?
  10  3
  Hibernate: select count(symptom0_.id) as col_0_0_ from symptoms symptom0_
  Hibernate: select symptom0_.id as id16_, symptom0_.symptom_description as symptom2_16_, symptom0_.symptom_name as symptom3_16_ from symptoms symptom0_ limit ?
  1
  Hibernate: select count(symptom0_.id) as col_0_0_ from symptoms symptom0_
  Hibernate: select symptom0_.id as id16_, symptom0_.symptom_description as symptom2_16_, symptom0_.symptom_name as symptom3_16_ from symptoms symptom0_ limit ?, ?
  10  2
  Hibernate: select count(symptom0_.id) as col_0_0_ from symptoms symptom0_
  Hibernate: select symptom0_.id as id16_, symptom0_.symptom_description as symptom2_16_, symptom0_.symptom_name as symptom3_16_ from symptoms symptom0_ limit ?
  1
  
  <script>
      $(document).ready(function(event) {
      event.preventDefault();
      var pads = $('ul.pagination').children();
      pads.click(function() {
          $.ajax({
              type: 'GET',
              url : "/hospital/symptoms",
              data: {rows: parseInt($('#select').text()), page: parseInt($(this).text())},
          });
      });
      });
  </script>