我想从服务器获取JSON响应，我使用以下代码

public class AtomAddressDetail implements java.io.Serializable {

    private Long id;
    private Place placeByStateId;
    private Atom atom;
    private Place placeByCountryId;
    private Place placeByCityId;
    private Place placeByStreetId;
    private Place placeByAreaId;
    private String houseno;
   //getter and setter
}

public class Place implements java.io.Serializable {
    private Long id;
    private String name;
    private String about;
    //getter and setter
}

在行动中

public class SettingAction extends ActionSupport {
    private long pageId; //getter and setter
    private long id;  //getter and setter
    private List<AtomAddressDetail> atomAddressList;
    public String singleAddress() {
         setAtomAddressList(cdao.singleAddress(getId(), getPageId()));
         for (AtomAddressDetail a : getAtomAddressList()) {
                            System.out.println("Country " + a.getPlaceByCountryId().getId() + " " + a.getPlaceByCountryId().getName());
                            System.out.println("state " + a.getPlaceByStateId().getId() + " " + a.getPlaceByStateId().getName());
                            System.out.println("city " + a.getPlaceByCityId().getId() + " " + a.getPlaceByCityId().getName());
                             System.out.println("area " + a.getPlaceByAreaId().getId() + " " + a.getPlaceByAreaId().getName());
                            System.out.println("street " + a.getPlaceByStreetId().getId() + " " + a.getPlaceByStreetId().getName());
         }
    }
    public List<AtomAddressDetail> getAtomAddressList() {
                return atomAddressList;
    }
        
    public void setAtomAddressList(List<AtomAddressDetail> atomAddressList) {
                this.atomAddressList = atomAddressList;
    }
}

输出：

Country 2 India
state 3 asdf
city 4 sdfsd
area 5 www
street 6 sdfdsa f

在struts.xml中

<action name="SingleAddressDetail" class=".SettingAction" method="singleAddress">
    <result name="success" type="json">
        <param name="includeProperties">
            ^atomAddressList\[\d+\]\.id,
            ^atomAddressList\[\d+\]\.houseno,
            ^atomAddressList\[\d+\]\.placeByAreaId.id,
            ^atomAddressList\[\d+\]\.placeByAreaId.name,
            ^atomAddressList\[\d+\]\.placeByCityId.id,
            ^atomAddressList\[\d+\]\.placeByCityId.name,
            ^atomAddressList\[\d+\]\.placeByStateId.id,
            ^atomAddressList\[\d+\]\.placeByStateId.name,
            ^atomAddressList\[\d+\]\.placeByCountryId.id,
            ^atomAddressList\[\d+\]\.placeByCountryId.name
        </param>
        <param name="excludeNullProperties">true</param>
        <param name="root">
            #action
        </param>
    </result>
    <result name="input" type="json"/>
    <result name="login" type="json"></result>
</action>

在JSP中

{"atomAddressList":[{"houseno":"sadf sadf ","id":1}]}

问题是在JSP页面中，我只得到两个字段值，但我想获取在struts.xml的操作中指定的所有值。
正如前面提到的那样，值在实际操作中被正确地打印出来，但是在像alert(data.atomAddressList[0].placeByCountryId.id);这样的JSP中访问时，它会显示出来

error:Uncaught TypeError: Cannot read property 'id' of undefined