公告

src/main/java/com/bao/dating/controller/NoticeController.java

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+package com.bao.dating.controller;
+
+import com.bao.dating.pojo.entity.Notice;
+import com.bao.dating.service.NoticeService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+/**
+ * 公告控制器
+ */
+@RestController
+@RequestMapping("/notice")
+public class NoticeController {
+    @Autowired
+    private NoticeService noticeService;
+
+    /**
+     * 查询所有公告数据
+     * @return 公告列表
+     */
+    @GetMapping("/list")
+    public List<Notice> getNoticeList() {
+        return noticeService.getNoticeList();
+    }
+
+    /**
+     * 判断是否有公告数据
+     * @return true=有数据 false=无数据
+     */
+    @GetMapping("/hasData")
+    public boolean hasNoticeData() {
+        List<Notice> noticeList = noticeService.getNoticeList();
+        return !noticeList.isEmpty();
+    }
+}

src/main/java/com/bao/dating/mapper/NoticeMapper.java

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+package com.bao.dating.mapper;
+
+import com.bao.dating.pojo.entity.Notice;
+
+import java.util.List;
+
+/**
+ * 公告Mapper接口
+ */
+public interface NoticeMapper {
+    /**
+     * 查询所有公告
+     * @return 公告列表
+     */
+    List<Notice> selectNoticeList();
+}

src/main/java/com/bao/dating/pojo/entity/Notice.java

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+package com.bao.dating.pojo.entity;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+import lombok.Data;
+
+import java.util.Date;
+
+/**
+ * 公告实体类
+ */
+@Data
+public class Notice {
+    /**
+     * 公告ID
+     */
+    private Long noticeId;
+    /**
+     * 公告标题
+     */
+    private String noticeTitle;
+    /**
+     * 公告内容
+     */
+    private String noticeContent;
+    /**
+     * 状态（0正常 1关闭）
+     */
+    private String noticeStatus;
+    /**
+     * 创建时间
+     */
+    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
+    private Date createTime;
+    /**
+     * 更新时间
+     */
+    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
+    private Date updateTime;
+}
+

src/main/java/com/bao/dating/service/NoticeService.java

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+package com.bao.dating.service;
+
+import com.bao.dating.pojo.entity.Notice;
+
+import java.util.List;
+
+/**
+ * 公告服务接口
+ */
+public interface NoticeService {
+    /**
+     * 查询所有公告
+     * @return 公告列表
+     */
+    List<Notice> getNoticeList();
+}

src/main/java/com/bao/dating/service/impl/NoticeServiceImpl.java

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+package com.bao.dating.service.impl;
+
+import com.bao.dating.mapper.NoticeMapper;
+import com.bao.dating.pojo.entity.Notice;
+import com.bao.dating.service.NoticeService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+@Service
+public class NoticeServiceImpl implements NoticeService {
+    @Autowired
+    private NoticeMapper noticeMapper;
+    @Override
+    public List<Notice> getNoticeList() {
+        return noticeMapper.selectNoticeList();
+    }
+}

src/main/resources/com/bao/dating/mapper/NoticeMapper.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.bao.dating.mapper.NoticeMapper">
+
+    <!-- 通用查询结果列 -->
+    <sql id="Notice_Column_List">
+        notice_id, notice_title, notice_content, notice_status, create_time, update_time
+    </sql>
+
+    <!-- 查询所有公告 -->
+    <select id="selectNoticeList" resultType="com.bao.dating.pojo.entity.Notice">
+        select
+        <include refid="Notice_Column_List"/>
+        from sys_notice
+        where notice_status = '0'
+        order by create_time desc
+    </select>
+
+</mapper>