新增获取聊天列表功能

ruoyi-system/src/main/java/com/ruoyi/system/domain/vo/SysUserVo.java

@@ -9,8 +9,10 @@ import java.util.Date;
 public class SysUserVo {
     //用户id
     private Long id;
-    //用户名
+    //用户昵称
     private String nickName;
+    //用户名
+    private String username;
     //用户头像
     private String avatar;
     //最新消息发送者名称

ruoyi-system/src/main/resources/mapper/system/CommunityChatMsgMapper.xml

@@ -6,6 +6,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 	<select id="getChatListWithLatestMessage" parameterType="java.lang.Long" resultType="com.ruoyi.system.domain.vo.SysUserVo">
         SELECT u.user_id                                                             AS id,
                u.nick_name as nickName,
+               u.user_name as username,
                u.avatar as avatar,
                (SELECT u2.nick_name from sys_user u2 where u2.user_id = r.sender_id) as senderNickName,
                r.content                                                             AS msg,