本例子只是一个实体类嵌套另外一个或者多个实体类。在实体类嵌套一个实体列表的我还没研究出来。

首先上实体类：

public class AppPost {    private String postId;    private String postTitle;    private int upTime;    private int postType;    private int pointsNum;    private int collectionNum;    private int replyNum;    private int transferNum;    private int isHost;    private int contentType;    private AppUserMini user;}public class AppUserMini {    private String userId;    private String userName;    private Integer userSex;    private Integer userAge;    private String userImg;    private String userAddress;}

然后其他乱七八糟的就不说了，直接上xml的代码：

        
         
         
         
         
         
         
         
         
         
         
       
      
        
         
         
         
         
         
       
          select a.post_id,a.post_title,a.up_time,a.post_type,a.points_num,a.collection_num,a.reply_num,a.transfer_num,a.is_hot,a.content_type,b.user_id,b.user_name,b.user_sex,b.user_age,b.user_img,b.user_address    from service_post a,sys_user b    where a.post_id = #{postId,jdbcType=INTEGER} AND a.user_id=b.user_id  

估计看代码就动了，我也不多逼逼了！