java - 使用 $.getJSON 结果未定义响应的 Struts2 json 响应

Question

我正在尝试使用 $.getJSON 方法从操作类中获取 String 值，但我得到的结果是 undefined。这是我尝试过的代码片段

脚本:

$(function() {
        $("#newPostionFormID").submit(
                function() {
                    var formInput = $(this).serialize();
                    $.getJSON('../employeeShifts/addnewposition.action',
                            formInput, function(jsonResponse) {
                                console.log(jsonResponse.positionAdded);
                            });
                    return false;
                });
    });

strus.xml:

<package name="employeeShifts" namespace="/employeeShifts"
                extends="struts-default,json-default">
     <action name="addnewposition" 
        class="com.vgt.intranet.employeeshifts.action.EmployeeShiftAction"
                    method="addNewPosition">
                    <result type="json">
                        <!-- <param name="excludeNullProperties">true</param>
                        <param name="noCache">true</param>
                        <param name="root">positionAdded</param> -->
                    </result>
        </action>
   </package>

Action 类:

public class EmployeeShiftAction extends ActionSupport {
private String position;
private String positionAdded;

public String addNewPosition() {
    log.info("inside addNewPosition");
    position = this.getPosition();
    log.info("Position: " + position);
    positionAdded = position;
    log.info("positionAdded: " + positionAdded);
    return Action.SUCCESS;
}

public String getPosition() {
    return position;
}

public void setPosition(String position) {
    this.position = position;
}

public String getPositionAdded() {
    return positionAdded;
}

public void setPositionAdded(String positionAdded) {
    this.positionAdded = positionAdded;
}

控制台日志:

undefined

不知道我错在哪里？任何帮助表示赞赏。

Answer 1

您可以使用 inlcude params 将多个对象定义为 out 参数。默认情况下，有时 JSON 调用会自动调用该 Controller 中的所有函数/方法，这些函数/方法的方法名称以“get”开头。因此请确保不会发生这种情况。

<result type="json">
<param name="excludeNullProperties">true</param>
     <param name="ignoreHierarchy">false</param>
     <param name="includeProperties">list1.*,list2.*,string</param>
</result>