1.公告接口增删改查实现

src/main/java/com/sqx/modules/announcement/controller/AnnouncementController.java

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+package com.sqx.modules.announcement.controller;
+
+import com.sqx.common.utils.Result;
+import com.sqx.modules.announcement.service.AnnouncementService;
+import com.sqx.modules.common.dto.AddAnnouncementDTO;
+import com.sqx.modules.common.dto.DeleteAnnouncementDTO;
+import com.sqx.modules.common.dto.UpdateAnnouncementDTO;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/announcement")
+public class AnnouncementController {
+
+    private final AnnouncementService announcementService;
+
+    public AnnouncementController(AnnouncementService announcementService) {
+        this.announcementService = announcementService;
+    }
+
+    @GetMapping("/list")
+    public Result list(@RequestParam(required = false) String title, @RequestParam(required = false) Integer state, @RequestParam(required = false) Integer id) {
+        return Result.success().put("data", announcementService.listInfo(title, state, id));
+    }
+
+    @PostMapping
+    public Result add(@RequestBody @Validated AddAnnouncementDTO announcementDTO) {
+        return Result.success().put("data", announcementService.add(announcementDTO));
+    }
+
+    @PutMapping
+    public Result update(@RequestBody @Validated UpdateAnnouncementDTO updateAnnouncementDTO) {
+        return Result.success().put("data", announcementService.updateInfo(updateAnnouncementDTO));
+    }
+
+    @DeleteMapping
+    public Result delete(@RequestBody @Validated DeleteAnnouncementDTO deleteAnnouncementDTO) {
+        return Result.success().put("data", announcementService.removeById(deleteAnnouncementDTO.getId()));
+    }
+
+}

src/main/java/com/sqx/modules/announcement/controller/app/AppAnnouncementController.java

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+package com.sqx.modules.announcement.controller.app;
+
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.sqx.common.utils.Result;
+import com.sqx.modules.announcement.entity.Announcement;
+import com.sqx.modules.announcement.service.AnnouncementService;
+import com.sqx.modules.common.dto.AddAnnouncementDTO;
+import com.sqx.modules.common.dto.DeleteAnnouncementDTO;
+import com.sqx.modules.common.dto.UpdateAnnouncementDTO;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/app/announcement")
+public class AppAnnouncementController {
+
+    private final AnnouncementService announcementService;
+
+    public AppAnnouncementController(AnnouncementService announcementService) {
+        this.announcementService = announcementService;
+    }
+
+    @GetMapping
+    public Result get() {
+        List<Announcement> records = announcementService.page(new Page<>(1, 1), new LambdaQueryWrapper<Announcement>()
+                .orderByDesc(Announcement::getCreateTime)).getRecords();
+        return Result.success().put("data", records.isEmpty() ? null : records.get(0));
+    }
+
+}

src/main/java/com/sqx/modules/announcement/entity/Announcement.java

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+package com.sqx.modules.announcement.entity;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableField;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import java.io.Serializable;
+import java.util.Date;
+import lombok.Data;
+
+/**
+ * 公告表
+ * @TableName announcement
+ */
+@TableName(value ="announcement")
+@Data
+public class Announcement implements Serializable {
+    /**
+     * 
+     */
+    @TableId(type = IdType.AUTO)
+    private Integer id;
+
+    /**
+     * 标题
+     */
+    private String title;
+
+    /**
+     * 内容
+     */
+    private String content;
+
+    /**
+     * 状态0关闭 1打开
+     */
+    private Integer state;
+
+    /**
+     * 创建时间
+     */
+    private Date createTime;
+
+    /**
+     * 修改时间
+     */
+    private Date updateTime;
+
+    @TableField(exist = false)
+    private static final long serialVersionUID = 1L;
+
+    @Override
+    public boolean equals(Object that) {
+        if (this == that) {
+            return true;
+        }
+        if (that == null) {
+            return false;
+        }
+        if (getClass() != that.getClass()) {
+            return false;
+        }
+        Announcement other = (Announcement) that;
+        return (this.getId() == null ? other.getId() == null : this.getId().equals(other.getId()))
+            && (this.getTitle() == null ? other.getTitle() == null : this.getTitle().equals(other.getTitle()))
+            && (this.getContent() == null ? other.getContent() == null : this.getContent().equals(other.getContent()))
+            && (this.getState() == null ? other.getState() == null : this.getState().equals(other.getState()))
+            && (this.getCreateTime() == null ? other.getCreateTime() == null : this.getCreateTime().equals(other.getCreateTime()))
+            && (this.getUpdateTime() == null ? other.getUpdateTime() == null : this.getUpdateTime().equals(other.getUpdateTime()));
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + ((getId() == null) ? 0 : getId().hashCode());
+        result = prime * result + ((getTitle() == null) ? 0 : getTitle().hashCode());
+        result = prime * result + ((getContent() == null) ? 0 : getContent().hashCode());
+        result = prime * result + ((getState() == null) ? 0 : getState().hashCode());
+        result = prime * result + ((getCreateTime() == null) ? 0 : getCreateTime().hashCode());
+        result = prime * result + ((getUpdateTime() == null) ? 0 : getUpdateTime().hashCode());
+        return result;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append(getClass().getSimpleName());
+        sb.append(" [");
+        sb.append("Hash = ").append(hashCode());
+        sb.append(", id=").append(id);
+        sb.append(", title=").append(title);
+        sb.append(", content=").append(content);
+        sb.append(", state=").append(state);
+        sb.append(", createTime=").append(createTime);
+        sb.append(", updateTime=").append(updateTime);
+        sb.append(", serialVersionUID=").append(serialVersionUID);
+        sb.append("]");
+        return sb.toString();
+    }
+}

src/main/java/com/sqx/modules/announcement/mapper/AnnouncementMapper.java

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+package com.sqx.modules.announcement.mapper;
+
+import com.sqx.modules.announcement.entity.Announcement;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Mapper;
+
+/**
+* @author Administrator
+* @description 针对表【announcement(公告表)】的数据库操作Mapper
+* @createDate 2025-01-02 14:33:44
+* @Entity com.sqx.modules.announcement.entity.Announcement
+*/
+@Mapper
+public interface AnnouncementMapper extends BaseMapper<Announcement> {
+
+}
+
+
+
+

src/main/java/com/sqx/modules/announcement/service/AnnouncementService.java

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+package com.sqx.modules.announcement.service;
+
+import com.sqx.modules.announcement.entity.Announcement;
+import com.baomidou.mybatisplus.extension.service.IService;
+import com.sqx.modules.common.dto.AddAnnouncementDTO;
+import com.sqx.modules.common.dto.DeleteAnnouncementDTO;
+import com.sqx.modules.common.dto.UpdateAnnouncementDTO;
+
+/**
+* @author Administrator
+* @description 针对表【announcement(公告表)】的数据库操作Service
+* @createDate 2025-01-02 14:33:44
+*/
+public interface AnnouncementService extends IService<Announcement> {
+
+    Object add(AddAnnouncementDTO announcementDTO);
+
+    Object updateInfo(UpdateAnnouncementDTO updateAnnouncementDTO);
+
+    Object listInfo(String title, Integer state, Integer id);
+
+}

src/main/java/com/sqx/modules/announcement/service/impl/AnnouncementServiceImpl.java

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+package com.sqx.modules.announcement.service.impl;
+
+import cn.hutool.core.bean.BeanUtil;
+import cn.hutool.core.date.DateUtil;
+import cn.hutool.core.util.StrUtil;
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.sqx.common.exception.SqxException;
+import com.sqx.modules.announcement.entity.Announcement;
+import com.sqx.modules.announcement.service.AnnouncementService;
+import com.sqx.modules.announcement.mapper.AnnouncementMapper;
+import com.sqx.modules.common.dto.AddAnnouncementDTO;
+import com.sqx.modules.common.dto.UpdateAnnouncementDTO;
+import org.springframework.stereotype.Service;
+
+/**
+* @author Administrator
+* @description 针对表【announcement(公告表)】的数据库操作Service实现
+* @createDate 2025-01-02 14:33:44
+*/
+@Service
+public class AnnouncementServiceImpl extends ServiceImpl<AnnouncementMapper, Announcement>
+    implements AnnouncementService{
+
+    @Override
+    public Object listInfo(String title, Integer state, Integer id) {
+        LambdaQueryWrapper<Announcement> queryWrapper = new LambdaQueryWrapper<>();
+        boolean flag = false;
+        if (StrUtil.isNotBlank(title)) {
+            queryWrapper.like(Announcement::getTitle, title);
+            flag = true;
+        }
+        if (title != null) {
+            queryWrapper.eq(Announcement::getState, state);
+            flag = true;
+        }
+        if (id != null) {
+            queryWrapper.eq(Announcement::getId, id);
+        }
+        return flag ? list(queryWrapper) : list();
+    }
+
+    @Override
+    public Object add(AddAnnouncementDTO announcementDTO) {
+        Announcement announcement = new Announcement();
+        BeanUtil.copyProperties(announcementDTO, announcement);
+        announcement.setCreateTime(DateUtil.date());
+        return announcement;
+    }
+
+    @Override
+    public Object updateInfo(UpdateAnnouncementDTO updateAnnouncementDTO) {
+        Announcement announcement = getById(updateAnnouncementDTO.getId());
+        if (announcement == null) {
+            throw new SqxException("公告不存在");
+        }
+        BeanUtil.copyProperties(updateAnnouncementDTO, announcement);
+        announcement.setUpdateTime(DateUtil.date());
+        return updateById(announcement);
+    }
+}
+
+
+
+

src/main/java/com/sqx/modules/common/dto/AddAnnouncementDTO.java

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+package com.sqx.modules.common.dto;
+
+import lombok.Data;
+
+import javax.validation.constraints.NotBlank;
+import javax.validation.constraints.NotNull;
+
+@Data
+public class AddAnnouncementDTO {
+    @NotBlank
+    private String title;
+    @NotBlank
+    private String content;
+    @NotNull
+    private Integer state;
+}

src/main/java/com/sqx/modules/common/dto/AnnouncementDTO.java

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+package com.sqx.modules.common.dto;
+
+import lombok.Data;
+
+@Data
+public class AnnouncementDTO {
+    private String title;
+    private String content;
+    private Integer state;
+}

src/main/java/com/sqx/modules/common/dto/DeleteAnnouncementDTO.java

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+package com.sqx.modules.common.dto;
+
+import lombok.Data;
+
+import javax.validation.constraints.NotBlank;
+import javax.validation.constraints.NotNull;
+
+@Data
+public class DeleteAnnouncementDTO {
+    @NotNull
+    private Integer id;
+}

src/main/java/com/sqx/modules/common/dto/UpdateAnnouncementDTO.java

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+package com.sqx.modules.common.dto;
+
+import lombok.Data;
+
+import javax.validation.constraints.NotBlank;
+import javax.validation.constraints.NotNull;
+
+@Data
+public class UpdateAnnouncementDTO {
+    @NotNull
+    private Integer id;
+    private String title;
+    private String content;
+    private Integer state;
+}

src/main/resources/mapper/AnnouncementMapper.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.sqx.modules.announcement.mapper.AnnouncementMapper">
+
+    <resultMap id="BaseResultMap" type="com.sqx.modules.announcement.entity.Announcement">
+            <id property="id" column="id" jdbcType="INTEGER"/>
+            <result property="title" column="title" jdbcType="VARCHAR"/>
+            <result property="content" column="content" jdbcType="VARCHAR"/>
+            <result property="state" column="state" jdbcType="TINYINT"/>
+            <result property="createTime" column="create_time" jdbcType="TIMESTAMP"/>
+            <result property="updateTime" column="update_time" jdbcType="TIMESTAMP"/>
+    </resultMap>
+
+    <sql id="Base_Column_List">
+        id,title,content,
+        state,create_time,update_time
+    </sql>
+</mapper>