月木学途开发 4.公告模块

概述

效果图

数据库设计

DROP TABLE IF EXISTS `announcement`;
CREATE TABLE `announcement` (
  `announcementId` int(11) NOT NULL AUTO_INCREMENT,
  `announcementTitle` varchar(255) DEFAULT NULL,
  `announcementTime` varchar(255) DEFAULT NULL,
  `announcementContent` longtext,
  PRIMARY KEY (`announcementId`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8mb4;

实体类设计

/**
 * 公告
 */
@Data
public class Announcement implements Serializable {
    @TableId
    private Integer announcementId;
    private String announcementTitle;//标题
    private String announcementTime;//时间
    private String announcementContent;//内容
}

Mapper层开发

public interface AnnouncementMapper extends BaseMapper<Announcement> {
}

Service层开发

AnnouncementService

package jkw.service;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import jkw.pojo.Announcement;

import java.util.List;

public interface AnnouncementService {
    void add(Announcement announcement);

    void update(Announcement announcement);

    void delete(Integer id);

    Announcement findById(Integer id);

    List<Announcement> findAll();

    Page<Announcement> search(String search, int page, int size);
}

AnnouncementServiceImpl

package jkw.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import jkw.mapper.AnnouncementMapper;
import jkw.pojo.Announcement;
import jkw.service.AnnouncementService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
@Transactional
public class AnnouncementServiceImpl implements AnnouncementService {
    @Autowired
    private AnnouncementMapper announcementMapper;

    @Override
    public void add(Announcement announcement) {
        announcementMapper.insert(announcement);
    }

    @Override
    public void update(Announcement announcement) {
        announcementMapper.updateById(announcement);
    }

    @Override
    public void delete(Integer id) {
        announcementMapper.deleteById(id);
    }

    @Override
    public Announcement findById(Integer id) {
        return announcementMapper.selectById(id);
    }

    @Override
    public List<Announcement> findAll() {
        return announcementMapper.selectList(null);
    }

    @Override
    public Page<Announcement> search(String search, int page, int size) {
        QueryWrapper queryWrapper = new QueryWrapper();
        if (search != null) {

        }
        return announcementMapper.selectPage(new Page<>(page, size), queryWrapper);
    }

}

控制层开发

AnnouncementCon

package jkw.controller.back;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import jkw.pojo.Announcement;
import jkw.service.AnnouncementService;
import jkw.vo.BaseResult;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@CrossOrigin
@RequestMapping("/back/announcement")
public class AnnouncementCon {

    @Autowired
    private AnnouncementService announcementService;

    /**
     * 新增
     *
     * @param announcement
     * @return
     */
    @PostMapping("/add")
    @PreAuthorize("hasAnyAuthority('/website/announcement')")
    public BaseResult add(Announcement announcement) {
        announcementService.add(announcement);
        return BaseResult.ok();
    }

    /**
     * 修改
     *
     * @param announcement
     * @return
     */
    @PostMapping("/update")
    @PreAuthorize("hasAnyAuthority('/website/announcement')")
    public BaseResult update(Announcement announcement) {
        announcementService.update(announcement);
        return BaseResult.ok();
    }

    /**
     * 删除
     *
     * @param announcementId
     * @return
     */
    @DeleteMapping("/delete")
    @PreAuthorize("hasAnyAuthority('/website/announcement')")
    public BaseResult delete(Integer announcementId) {
        announcementService.delete(announcementId);
        return BaseResult.ok();
    }

    /**
     * 根据id查询
     *
     * @param announcementId
     * @return
     */
    @GetMapping("/findById")
    @PreAuthorize("hasAnyAuthority('/website/announcement')")
    public BaseResult findById(Integer announcementId) {
        Announcement announcement = announcementService.findById(announcementId);
        return BaseResult.ok(announcement);
    }

    /**
     * 查询所有
     *
     * @return
     */
    @GetMapping("/findAll")
    @PreAuthorize("hasAnyAuthority('/website/announcement')")
    public BaseResult findAll() {
        List<Announcement> all = announcementService.findAll();
        return BaseResult.ok(all);
    }

    /**
     * 分页查询
     *
     * @param page
     * @param size
     * @return
     */
    @GetMapping("/search")
    @PreAuthorize("hasAnyAuthority('/website/announcement')")
    public BaseResult search(String search, int page, int size) {
        Page<Announcement> brandPage = announcementService.search(search, page, size);
        return BaseResult.ok(brandPage);
    }
}

后台ui设计

<template>
  <div class="data-container">
    <!--添加 start-->
    <div class="data-header">
      <el-input class="input" @keyup.enter="searchHandle" v-model="searchInfo" size="large"
                placeholder="请输入关键字"></el-input>
      <el-button @click="searchHandle" class="button" size="large" type="primary" plain>搜索</el-button>
      <el-button round @click="addHander" size="large" type="primary">
        <el-icon>
          <DocumentAdd/>
        </el-icon>
        <span>新增</span>
      </el-button>
    </div>
    <!--添加 end-->
    <!--表格数据展示 start-->
    <div class="data-table">
      <el-table :data="dataList.list" style="width: 700px;">
        <el-table-column show-overflow-tooltip label="标题" prop="announcementTitle" align="center"></el-table-column>
        <el-table-column align="center" :formatter="value => detaFormater(Number(value.announcementTime))" prop="announcementTime" label="时间" width="100"/>
        <el-table-column label="操作" align="center" width="220">
          <template #default="scope">
            <el-button size="small" type="primary" @click="handleEdit(scope.$index, scope.row)">编辑</el-button>
            <el-button size="small" type="danger" @click="handleDelete(scope.$index, scope.row)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
      <!--分页 start-->
      <div class="page">
        <el-pagination background
                       layout="prev,pager,next,jumper"
                       :default-page-size="defaultPageSize"
                       :total="totalData"
                       @current-change="currentChangeHaddler"></el-pagination>
      </div>
      <!--分页 end-->
    </div>
    <!--表格数据展示 end-->
    <!--添加对话框 start-->
    <el-dialog draggable destroy-on-close v-model="dialogAddVisible" title="添加" width="70%" center>
      <el-form inline :model="addFormInfo" label-width="150px">
        <el-form-item label="标题">
          <el-input v-model="addFormInfo.announcementTitle"></el-input>
        </el-form-item>
        <el-form-item label="时间">
          <el-date-picker value-format="x" v-model="addFormInfo.announcementTime" type="date"></el-date-picker>
        </el-form-item>
        <el-form-item label="内容">
          <el-input type="textarea" rows="6" style="width: 800px" v-model="addFormInfo.announcementContent"></el-input>
        </el-form-item>
      </el-form>
      <template #footer>
            <span class="dialog-footer">
                <el-button @click="dialogAddVisible = false">取消</el-button>
                <el-button type="primary" @click="sureHandler">确定</el-button>
            </span>
      </template>
    </el-dialog>
    <!--添加对话框 end-->
    <!--编辑对话框 start-->
    <!--destroy-on-close:每次关闭对话框时直接销毁对话框，没有缓存-->
    <el-dialog
        draggable
        destroy-on-close
        v-model="dialogEditorVisible"
        title="编辑"
        width="70%"
        center>
      <el-form inline :model="editorFormInfo" label-width="150px">
        <el-form-item label="标题">
          <el-input v-model="editorFormInfo.announcementTitle"></el-input>
        </el-form-item>
        <el-form-item label="时间">
          <el-date-picker value-format="x" v-model="editorFormInfo.announcementTime" type="date"></el-date-picker>
        </el-form-item>
        <el-form-item label="内容">
          <el-input type="textarea" rows="6" style="width: 800px" v-model="editorFormInfo.announcementContent"></el-input>
        </el-form-item>
      </el-form>
      <template #footer>
            <span class="dialog-footer">
                <el-button @click="dialogEditorVisible = false">取消</el-button>
                <el-button type="primary" @click="sureEditorHandler">确定</el-button>
            </span>
      </template>
    </el-dialog>
    <!--编辑对话框 end-->
  </div>
</template>

<script setup>
import axios from "../../api/index.js"
import {onMounted, reactive, ref} from "vue";
import {ElMessage} from "element-plus";
import {detaFormater} from "@/utils/utils.js"
//初始化分页查询数据
const dataList = reactive({
  list: []
})
//初始化总条数
const totalData = ref(0)
//当前页
const currentPage = ref(1)
//初始化分页显示条数
const defaultPageSize = ref(10)
//搜索初始化状态
const searchInfo = ref("")
//添加添加对话框控制器
const dialogAddVisible = ref(false)
//初始化添加对话框状态
const addFormInfo = reactive({
  announcementTitle: "",
  announcementTime: "",
  announcementContent:''
})
//编辑对话框控制器
const dialogEditorVisible = ref(false)
//初始化编辑对话框状态
const editorFormInfo = reactive({
  announcementId: '',
  announcementTitle: "",
  announcementTime: "",
  announcementContent:''
})
/**
 * 网路请求：分页查询
 *  */
const http = (search, page, size) => {
  axios.announcement_search({
    search: search,
    page: page,
    size: size
  }).then(res => {
    if (res.data.code == 200) {
      dataList.list = res.data.data.records
      totalData.value = res.data.data.total
    } else {
      ElMessage.error(res.data.message)
    }

  })
}
onMounted(() => {
  http(searchInfo.value, currentPage.value, defaultPageSize.value)
})
/**
 * 分页
 */
const currentChangeHaddler = (nowPage) => {
  http(searchInfo.value, nowPage, defaultPageSize.value)
  currentPage.value = nowPage
}
/**
 * 搜索按钮
 */
const searchHandle = () => {
  http(searchInfo.value, currentPage.value, defaultPageSize.value)
}
/**
 * 添加对话框弹出事件
 */
const addHander = () => {
  dialogAddVisible.value = true
}
/**
 * 添加对话框 确定事件
 */
const sureHandler = () => {
  axios.announcement_add({
    announcementTitle: addFormInfo.announcementTitle,
    announcementTime: addFormInfo.announcementTime,
    announcementContent: addFormInfo.announcementContent,
  }).then(res => {
    if (res.data.code == 200) {
      dialogAddVisible.value = false
      http(searchInfo.value, currentPage.value, defaultPageSize.value)
    } else {
      ElMessage.error(res.data.message)
    }
  })
}
/**
 * 编辑对话框 弹出事件
 *  */
const handleEdit = (index, row) => {

  dialogEditorVisible.value = true
  axios.announcement_findById({
    announcementId: row.announcementId
  }).then(res => {
    if (res.data.code == 200) {
      editorFormInfo.announcementId = res.data.data.announcementId;
      editorFormInfo.announcementTitle = res.data.data.announcementTitle;
      editorFormInfo.announcementTime = res.data.data.announcementTime;
      editorFormInfo.announcementContent = res.data.data.announcementContent;
    } else {
      ElMessage.error(res.data.data.message)
    }
  })

}
/**
 * 编辑对话框 确定事件
 */
const sureEditorHandler = () => {
  axios.announcement_update({
    announcementId: editorFormInfo.announcementId,
    announcementTitle: editorFormInfo.announcementTitle,
    announcementTime: editorFormInfo.announcementTime,
    announcementContent: editorFormInfo.announcementContent,
  }).then(res => {
    if (res.data.code == 200) {
      dialogEditorVisible.value = false
      http(searchInfo.value, currentPage.value, defaultPageSize.value)
    } else {
      ElMessage.error(res.data.message)
    }
  })
}
/**删除 */
const handleDelete = (index, row) => {
  ElMessageBox.confirm(
      '确定删除么',
      '删除',
      {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning',
      }
  ).then(() => {
    //确认删除
    axios.announcement_delete({
      announcementId: row.announcementId
    }).then(res => {
      if (res.data.code == 200) {
        ElMessage({
          type: 'success',
          message: "删除成功！！！",
        })
        //刷新
        http(searchInfo.value, currentPage.value, defaultPageSize.value)
      } else {
        ElMessage({
          type: 'error',
          message: res.data.message,
        })
      }
    })
  }).catch(error => {
    ElMessage({
      type: 'info',
      message: "取消删除",
    })
  })


}
</script>
<style scoped>
.data-container {
  background: linear-gradient(left, rgb(89, 234, 233) 27%, rgb(131, 231, 218) 44%, rgb(69, 150, 216) 88%);
  background: -o-linear-gradient(left, rgb(89, 234, 233) 27%, rgb(131, 231, 218) 44%, rgb(69, 150, 216) 88%);
  background: -ms-linear-gradient(left, rgb(89, 234, 233) 27%, rgb(131, 231, 218) 44%, rgb(69, 150, 216) 88%);
  background: -moz-linear-gradient(left, rgb(89, 234, 233) 27%, rgb(131, 231, 218) 44%, rgb(69, 150, 216) 88%);
  background: -webkit-linear-gradient(left, rgb(89, 234, 233) 27%, rgb(131, 231, 218) 44%, rgb(69, 150, 216) 88%);
  height: 800px;
}

.data-header {
  padding: 20px;
}

.data-header .input {
  width: 300px;
}

.data-table {
  padding: 20px;
}

.page {
  position: fixed;
  right: 10px;
  bottom: 10px;
}
</style>