springboot+vue分页

java项目

导包

        <!--springboot整合pagehelper-->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.3.1</version>
        </dependency>

前端

vue项目

<template>
  <div>
    <el-row>
      <el-col :span="24">
        
        <el-table :data="tableDate" border style="width: 100%">
          <el-table-column type="index" label="序号" width="80"> el-table-column>
          <el-table-column prop="time" label="时间" width="180"> el-table-column>
          <el-table-column prop="ip" label="IP" width="180"> el-table-column>
          <el-table-column prop="location" label="地区" width="180"> el-table-column>
          <el-table-column prop="browser" label="浏览器" width="180"> el-table-column>
        el-table>
      el-col>
    el-row>

    <el-row>
      <el-col :span="6">
        
        <el-pagination
          background
          layout="total,sizes,prev, pager, next"
          :total="total"
          :page-sizes="[ 5, 10, 15]"
          :page-size="pageSize"
          :current-page="pageNum"
          @next-click="nextPage"
          @prev-click="prevPage"
          @size-change="sizeChange"
          @current-change="currentChange">
        el-pagination>
      el-col>
    el-row>
  div>
template>

<script>
  export default {
    data() {
      return {
        total: 10, //总条数
        pageSize: 10, //每页多少条
        pageNum: 1, //当前页,
        tableDate: [],
      };
    },
    methods: {
      //下一页
      nextPage(val) {
        this.pageNum = val;
        this.queryAllPcLoginLog();
      },

      //上一页
      prevPage(val) {
        this.pageNum = val;
        this.queryAllPcLoginLog();
      },
      //当每页条数改变时触发
      sizeChange(val) {
        this.pageNum = 1;
        this.pageSize = val;
        this.queryAllPcLoginLog();
      },
      //点击第几页时触发
      currentChange(val) {
        this.pageNum = val;
        this.queryAllPcLoginLog();
      },
      queryAllPcLoginLog() {
        let params = {};
        params.pageNum = this.pageNum;
        params.pageSize = this.pageSize;
        this.$axios.post("api/pcLoginLog/queryAllPcLoginLog", params).then((res) => {
          let pageDate = res.data.data;
          this.tableDate = pageDate.list;
          this.pageNum = pageDate.pageNum;
          this.pageSize = pageDate.pageSize;
          this.total = pageDate.total;
        });
      },
    },
    created() {
      this.queryAllPcLoginLog();
    },
  };
script>

<style>style>

后端

实体类

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class PcLoginLog {
//对应数据库
    private Integer id;
    private String time;
    private String ip;
    private String location;
    private String browser;
}

实体类Vo

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class ParamData<T> {
    // 统一接收类
    private Integer pageNum;
    private Integer pageSize;
    private T data;
}

mapper层 方法

ResponseDate<?> queryAllPcLoginLog(ParamData<PcLoginLog> paramData);

Service层 实现

    @Override
    public ResponseDate<?> queryAllPcLoginLog(ParamData<PcLoginLog> paramData) {
        PageHelper.startPage(paramData.getPageNum(),paramData.getPageSize());
        List<PcLoginLog> pcLoginLogs = pcLoginLogMapper.queryAllPcLoginLog();
        PageInfo pageInfo = new PageInfo(pcLoginLogs);
        return new ResponseDate<>().ok(pageInfo);
    }

上面的顺序不能乱

• 第一步：PageHelper.startPage…
• 第二步：调用查询方法
• 第三步：PageInfo pageInfo…

Controller层

  @PostMapping("/queryAllPcLoginLog")
  public ResponseDate<?> queryAllPcLoginLog(@RequestBody ParamData<PcLoginLog> paramData) {
      return pcLoginLogService.queryAllPcLoginLog(paramData);
  }