如何用struts2标签循环双层List并分组
昨天开发的时候遇到了这样一个问题,项目用的是ssh,需要在页面循环显示一个双层List,
这个2个List是这样的：List<Agent> List<List<Agent>>,页面要求分组 分页显示,分组的条件是Agent实体类中的属性:
agtPhone agtCity,需要做两个页面,一个以agtPhone分组,一个以agtCity分组。好，不多说，看代码:

首先是实体类:

Java code

public class Agent implements java.io.Serializable {    // Fields    private Integer agtId;    private String agtName;    private String agtActNum;    private Timestamp agtJoin;    private String agtAdd1;    private String agtAdd2;    private Integer agtSales;    private String agtCity;    private String agtState;    private String agtZip;    private String agtCountry;    private String agtSalute;    private String agtFname;    private String agtLname;    private String agtTitle;    private String agtPhone;    private String agtMobile;    private String agtFax;    private String agtEmail;    private String agtUrl;    private Short status;    private Timestamp createDate;    private Timestamp lastMod;    private String modBy;    private Integer languageId;    private Integer yearEstablished;    private String emergencyNumber;    private Boolean qualified;    private Timestamp qualifiedDate;    private String area;    private Timestamp lastBookedOnline;    private String agtNameChinese;    private String agtPhone2;    private Integer creditRatingId;    private Integer agtIdAccounting;    private Timestamp lastModAccounting;    private String agtCcemail;    private Integer employeeRegionId;    private Integer employeeRegionArea;    private Integer engEmployeeRegionId;    private String accessTourType;    private Boolean isExternalOp;    private Boolean unsubscribe;    private Integer agtCityId;}

[解决办法]

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补充:写完后运行，结果页面上什么都没有

[解决办法]
完全一片空白。。。这个听起来就比较神奇了，先用删除JSP页面代码的方式，来缩小问题范围吧。