這3張表的關(guān)系是模型表Model ===> 訓(xùn)練表Training ===》應(yīng)用表Application（大概的邏輯是：選擇應(yīng)用，然后訓(xùn)練，然后成為模型）
首先我們先建立實(shí)體Model（我使用的data注解不需要get set @TableField(exist = false) 注解下的屬性 是相關(guān)聯(lián)表的屬性）
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package cn.com.befery.dataai.po;import java.util.Date;import org.springframework.boot.jackson.JsonComponent;import com.baomidou.mybatisplus.annotations.TableField;import com.baomidou.mybatisplus.annotations.TableId;import com.baomidou.mybatisplus.annotations.TableName;import com.baomidou.mybatisplus.enums.IdType;import lombok.Data;@JsonComponent()@Data@TableName("ai_model")public class Model { @TableId(value = "model_id", type = IdType.AUTO) private Long modelID; private Long applicationId; private Long trainingId; private String modelName; // 描述 private String modelDescribe; private String modelType; private Date createDate; private String filePath; private String fileName; private String daimension; //維度 private Long status; @TableField(exist = false) private String applicationName; @TableField(exist = false) private String trainingName; @TableField(exist = false) private String order; @TableField(exist = false) private String orderdir; // 升序或降序} |
然后是第二個(gè)相關(guān)聯(lián)的表 應(yīng)用表application表
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package cn.com.befery.dataai.po;import java.io.Serializable;import java.util.Date;import com.baomidou.mybatisplus.annotations.TableField;import com.baomidou.mybatisplus.annotations.TableId;import com.baomidou.mybatisplus.annotations.TableName;import com.baomidou.mybatisplus.enums.IdType;import lombok.Data;@Data@TableName("ai_application")public class Application implements Serializable{ private static final long serialVersionUID = 1L; @TableId(value="application_id",type=IdType.AUTO) private Long applicationID; private String applicationName; private String filePath; private String fileName; private Long userId; private Date createDate; private Integer status; private String dimension; //維度 @TableField(exist= false) private String userName; //關(guān)聯(lián)用戶表的名稱字段 @TableField(exist = false) private String order; @TableField(exist = false) private String modelName; @TableField(exist = false) private String trainingName; @TableField(exist = false) private String orderdir; //升序或降序} |
然后是相關(guān)聯(lián)的第3張表 訓(xùn)練表traning
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package cn.com.befery.dataai.po;import java.io.Serializable;import java.util.Date;import com.baomidou.mybatisplus.annotations.TableField;import com.baomidou.mybatisplus.annotations.TableId;import com.baomidou.mybatisplus.annotations.TableName;import com.baomidou.mybatisplus.enums.IdType;import lombok.Data;@Data@TableName("ai_training")public class Training implements Serializable { private static final long serialVersionUID = 1L; @TableId(value = "training_id", type = IdType.AUTO) private Long trainingID; private Long serverId; //服務(wù)器ID private Long applicationId; //應(yīng)用ID private String trainingModel; //訓(xùn)練模型 private String trainingName; //訓(xùn)練名稱 private String dimensionInput; //輸入維度 private String dimensionOutput; //輸出維度 private Date createDate; private Integer status; @TableField(exist = false) private String applicationName; @TableField(exist = false) private String serverName; @TableField(exist = false) private String modelName; @TableField(exist = false) private String order; //排序字段 @TableField(exist = false) private String orderdir; //升序或降序} |
然后是DAO層：
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package cn.com.befery.dataai.dao;import java.util.List;import org.apache.ibatis.annotations.Param;import com.baomidou.mybatisplus.mapper.BaseMapper;import com.baomidou.mybatisplus.plugins.pagination.Pagination;import cn.com.befery.dataai.po.Model;public interface ModelDao extends BaseMapper<Model> { List<Model> selectModelPage(Pagination page,@Param(value = "model") Model model);} |
然后是xml（sql語(yǔ)句使用了別名，別名和實(shí)體中的一致，包括之后的前后臺(tái)交互，都取一致的名字，規(guī)范避免出錯(cuò)）【我之所以使用 $ 符號(hào)是因?yàn)?如果使用#號(hào)他會(huì)當(dāng)作字符串識(shí)別，他不會(huì)當(dāng)作關(guān)鍵字識(shí)別，我使用#號(hào)不行】
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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="cn.com.befery.dataai.dao.ModelDao"> <select id="selectModelPage" resultType="cn.com.befery.dataai.po.Model"> SELECT model.`model_id`, model.`model_name` as modelName, model.`status`as status, t.`training_name`as trainingName, ap.`application_name` as applicationName, model.`create_date` as createDate FROM ai_model model LEFT JOIN ai_training t ON t.`training_id` = model.`training_id` LEFT JOIN ai_application ap ON ap.`application_id` = t.`application_id` <where> 1 = 1 <if test="model.modelName != null and model.modelName != ''"> and model.`model_name` like '%${model.modelName}%' </if> order by ${model.order} ${model.orderdir} </where> </select></mapper> |
然后就是service：
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package cn.com.befery.dataai.service;import javax.servlet.http.HttpServletRequest;import org.springframework.web.multipart.MultipartFile;import com.baomidou.mybatisplus.plugins.Page;import com.baomidou.mybatisplus.service.IService;import cn.com.befery.dataai.po.Model;import cn.com.befery.dataai.vo.ResultCode;public interface ModelService extends IService<Model>{ //分頁(yè) Page<Model> selectModelPage(int pageNo,int pageSize,Model model); } |
然后就是serviceImpl：（此處將接口中的 pageNo和pageSize封裝成到 分頁(yè)輔助類(lèi) page<T>中）
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@Service@Transactionalpublic class ModelServiceImpl extends ServiceImpl<ModelDao, Model> implements ModelService { @Autowired private ModelDao modelDao; @Override public Page<Model> selectModelPage(int pageNo, int pageSize, Model model) { // TODO Auto-generated method stub Page<Model> page = new Page<Model>(pageNo, pageSize); return page.setRecords(this.baseMapper.selectModelPage(page, model)); }} |
然后就是Controller：
簡(jiǎn)單說(shuō)一下下面的參數(shù)：
1.orderNO（排序用的）：是前臺(tái)傳過(guò)來(lái)的，根據(jù)orderNO（類(lèi)似下標(biāo)）找到前臺(tái)定義好的數(shù)據(jù)庫(kù)字段
2.order（排序用的）：根據(jù)orderNO（類(lèi)似下標(biāo)）找到前臺(tái)定義好的數(shù)據(jù)庫(kù)字段
3.orderdir（排序用的：是asc 還是desc）
4.search（前臺(tái)模糊查詢使用的）：前臺(tái)傳的名字，來(lái)進(jìn)行模糊查詢
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/** * @author zhangxuewei 三表查詢 * @param param * @param request * @return */ @ResponseBody @RequestMapping(value = "/modelPage") public ResponseData modlePage(SearchParam param, HttpServletRequest request) { logger.info("modlePage ..........."); String orderNO = request.getParameter("order[0][column]"); String order = request.getParameter("columns[" + orderNO + "][name]"); String orderdir = request.getParameter("order[0][dir]"); String search = request.getParameter("search[value]"); int pageNo = param.getStart() / param.getLength() + 1; int pageSize = param.getLength(); Model model = new Model(); model.setModelName(search); model.setOrder(order); model.setOrderdir("asc".equals(orderdir) ? "asc" : "desc"); Page<Model> pageDate = modelService.selectModelPage(pageNo, pageSize, model); return responseData(param.getDraw(), pageDate); } |
這個(gè)是分頁(yè)返回公共類(lèi)
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package cn.com.befery.dataai.controller;import org.springframework.stereotype.Controller;import com.baomidou.mybatisplus.plugins.Page;import cn.com.befery.dataai.vo.ResponseData;@Controllerpublic class BaseController { /** * * @param draw 重構(gòu)次數(shù) * @param page 分頁(yè)數(shù)據(jù) * @return */ public ResponseData responseData(String draw,Page<?> page){ ResponseData res = new ResponseData(); res.setData(page.getRecords()); res.setDraw(draw); res.setRecordsFiltered((int)page.getTotal()); res.setRecordsTotal((int)page.getTotal()); return res; }} |
這個(gè)是ResponseDate實(shí)體類(lèi)
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package cn.com.befery.dataai.vo;import java.util.List;//@JsonInclude(Include.NON_NULL) public class ResponseData { /** * */// private static final long serialVersionUID = 1L; private String draw; private int recordsTotal; private int recordsFiltered; @SuppressWarnings("rawtypes") private List data;} |
這是前端的html
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<!DOCTYPE HTML><html><head><meta charset="utf-8"><meta name="renderer" content="webkit|ie-comp|ie-stand"><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"><meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no" /><meta http-equiv="Cache-Control" content="no-siteapp" /><!--[if lt IE 9]><script type="text/javascript" src="lib/html5.js"></script><script type="text/javascript" src="lib/respond.min.js"></script><script type="text/javascript" src="lib/PIE_IE678.js"></script><![endif]--><link rel="stylesheet" type="text/css" href="../static/h-ui/css/H-ui.min.css" rel="external nofollow" /><link rel="stylesheet" type="text/css" href="../static/h-ui/css/H-ui.admin.css" rel="external nofollow" /><link rel="stylesheet" type="text/css" href="../static/libs/Hui-iconfont/1.0.7/iconfont.css" rel="external nofollow" /><link rel="stylesheet" type="text/css" href="../static/libs/icheck/icheck.css" rel="external nofollow" /><link rel="stylesheet" type="text/css" href="../static/h-ui/skin/default/skin.css" rel="external nofollow" id="skin" /><link rel="stylesheet" type="text/css" href="../static/h-ui/css/style.css" rel="external nofollow" /><!--[if IE 6]><script type="text/javascript" src="http://lib.h-ui.net/DD_belatedPNG_0.0.8a-min.js" ></script><script>DD_belatedPNG.fix('*');</script><![endif]--><title>應(yīng)用列表</title><style type="text/css">.dataTables_wrapper .dataTables_length { float: left; padding-bottom: 0px; padding-top: 10px; padding-left: 20px;}.table tbody tr td:FIRST-CHILD { text-align: center;}.table tbody tr td { text-align: center;}.dataTables_wrapper .dataTables_filter { padding-bottom: 10px;}.mt-20 { margin-top: 10px;}.page-container { padding: 20px; padding-top: 0px;}.form-horizontal .form-label { text-align: left; width: 140px; padding-right: 0px;}</style></head><body> <nav class="breadcrumb"> <i class="Hui-iconfont"></i> 首頁(yè) <span class="c-gray en">></span> 模型和測(cè)試管理 <span class="c-gray en">></span> 模型列表 <a class="btn btn-success radius r" id="refresh" style="line-height: 1.6em; margin-top: 3px" href="javascript:location.replace(location.href);" rel="external nofollow" title="刷新"><i class="Hui-iconfont"></i></a> </nav> <div class="page-container"> <!-- <div class="text-c"> 日期范圍： <input type="text" onfocus="WdatePicker({maxDate:'#F{$dp.$D(\'logmax\')||\'%y-%M-%d\'}',minDate:'#F{$dp.$D(\'logmax\',{M:-3})}'})" id="logmin" class="input-text Wdate" style="width:120px;"> - <input type="text" onfocus="WdatePicker({maxDate:'#F{$dp.$D(\'logmin\',{M:3})||\'%y-%M-%d\'}',minDate:'#F{$dp.$D(\'logmin\')}'})" id="logmax" class="input-text Wdate" style="width:120px;"> <input type="text" name="" id="search" placeholder=" 門(mén)店名稱" style="width:250px" class="input-text"> <button name="" id="search" class="btn btn-success" type="submit" onclick="search()"><i class="Hui-iconfont"></i> 搜賬戶</button> </div> --> <!-- <div style="display: <#if(modelServer)??>${modelServer" class="cl pd-5 bg-1 bk-gray mt-20"> <span class="l"> <a class="btn btn-primary radius" id="addApp" onclick="modelServerServer_add('創(chuàng)建模型服務(wù)','/pages/modelServer-add.html')" href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><i class="Hui-iconfont"></i> 創(chuàng)建模型服務(wù)</a><a id="datarefresh" onclick="data_refresh()"></a><input id="hiddentext" type="text" hidden="true" /> <input id="msgsecret" type="text" hidden="true" /> </div> --> <div style="display: <#if (model)??>${model}<#else></#if>" class="cl pd-5 bg-1 bk-gray mt-20"> <span class="l"> <a class="btn btn-primary radius" id="addApp" onclick="model_testing('測(cè)試模型','/pages/model-testing.html')" href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><i class="Hui-iconfont"></i> 測(cè)試模型</a><a id="datarefresh" onclick="data_refresh()"></a><input id="hiddentext" type="text" hidden="true" /> <input id="msgsecret" type="text" hidden="true" /></div> <div class="mt-20"> <table class="table table-border table-bordered table-bg table-hover table-sort " width=100%> <thead> <tr class="text-c"> <!-- <th width="40"><input id = "checkAll" name="checkAll" type="checkbox" value=""></th> --> <th width="80">序號(hào)</th> <th width="80">模型服務(wù)名稱</th> <th width="100">訓(xùn)練名稱</th> <th width="100">應(yīng)用名稱</th> <th width="100">創(chuàng)建時(shí)間</th> <th width="80">操作</th> </tr> </thead> <tbody> </tbody> </table> </div> </div> <div id="ajaxModal" class="modal hide fade" tabindex="-1"> <article class="page-container"> <form action="" method="post" class="form form-horizontal" id="form-modelServer-add"> <div class="row cl"> <label class="form-label col-xs-3 col-sm-3"><span class="c-red">*</span>App名稱：</label> <div class="formControls col-xs-8 col-sm-9"> <input type="text" class="input-text" value="" placeholder="" id="appName" name="appName"> </div> </div> <div class="row cl"> <label class="form-label col-xs-3 col-sm-3"><span class="c-red">*</span>圖片地址：</label> <div class="formControls col-xs-8 col-sm-9"> <input type="text" class="input-text" value="" placeholder="" id="adminMobile" name="adminMobile"> </div> </div> <div class="row cl"> <label class="form-label col-xs-3 col-sm-3"><span class="c-red">*</span>Domain(SaaS)：</label> <div class="formControls col-xs-8 col-sm-9"> <input type="text" class="input-text" value="" placeholder="" id="payCallBackURL" name="payCallBackURL"> </div> </div> <div class="row cl"> <div class="col-xs-8 col-sm-9 col-xs-offset-4 col-sm-offset-3" style="margin-left: 130px; width: 100px;"> <button class="btn btn-primary radius" value=""> 提交 </button> </div> <!-- <div class="col-xs-8 col-sm-9 col-xs-offset-4 col-sm-offset-3" style="float: right; width: 250px;margin-left: 0px;"> <input class="btn btn-primary radius" style="width: 80px;" onclick="javascript:;" value=" 取消 "> </div> --> </div> </form> </article> </div> <script type="text/javascript" src="../static/libs/jquery/1.9.1/jquery.min.js"></script> <script type="text/javascript" src="../static/libs/layer/2.1/layer.js"></script> <script type="text/javascript" src="../static/libs/My97DatePicker/WdatePicker.js"></script> <script type="text/javascript" src="../static/libs/datatables/1.10.0/jquery.dataTables.min.js"></script> <script type="text/javascript" src="../static/h-ui/js/H-ui.js"></script> <script type="text/javascript" src="../static/h-ui/js/H-ui.admin.js"></script> <!-- <script type="text/javascript" src="js/modelServer.js"></script> --> <script type="text/javascript"> var table = $('.table-sort') .DataTable( { "processing" : true, "serverSide" : true, // "searching":true, 'language' : { "search" : "按名稱檢索：", "sProcessing" : "<div style='position:absolute;margin-left:42%;margin-top:15%'><img src='static/h-ui/images/loading_072.gif'/>數(shù)據(jù)加載中...</div>", }, "sDom" : '<"top"f<"clear">>rt<"bottom"ilp><"clear">', "order" : [ [ 0, "asc" ] ], "ajax" : { "url" : "/model/modelPage", /* "data": function ( d ) { //添加額外的參數(shù)傳給服務(wù)器 d.extra_search = "canshu1"; d.extra_search1 = "canshu11"; }, */ }, "columnDefs" : [ { orderable : false,//禁用排序 targets : [ 4 ] } ], "columns" : [ /*{"sTitle": "<input type='checkbox'></input>","mDataProp": null, "sWidth": "20px", "sDefaultContent": "<input type='checkbox' ></input>", "bSortable": false,"sClass": "text-center",}, */ { "data" : "modelID", "name" : "model_id", "class" : "modelID" }, { "data" : "modelName", "name" : "model_name", "class" : "modelName" }, { "data" : "trainingName", "name" : "training_name", "class" : "trainingName" }, { "data" : "applicationName", "name" : "application_name", "class" : "applicationName" }, { "data" : function(e) { if (e.createDate != null && e.createDate != "null") { return e.createDate; } return ""; }, "name" : "create_date", "class" : "createDate" }, { "data" : function(e) { if (e.status == '0') { if (e.isTrained == '0') { return '<a style="display: <#if (modelServer_delete)??>${modelServer_delete}<#else></#if>" id="codetool">
到此這篇關(guān)于MyBatis-Plus多表聯(lián)合查詢并且分頁(yè)(3表聯(lián)合)的文章就介紹到這了,更多相關(guān)MyBatis-Plus多表聯(lián)合查詢內(nèi)容請(qǐng)搜索服務(wù)器之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持服務(wù)器之家！ 原文鏈接：https://blog.csdn.net/Mr_ZhangAdd/article/details/84248479 延伸 · 閱讀
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