前台往后台传id

js页面

var stuid;
$(function () {
    var request = {
        QueryString : function(val) {
            var uri = window.location.search;
            var re = new RegExp("" +val+ "\=([^\&\?]*)", "ig");
            return ((uri.match(re))?(uri.match(re)[0].substr(val.length+1)):null);
        }
    }
    stuid =request.QueryString("stuid")

})
layui.use(['layer', 'table', 'jquery', 'form'], function(){
    var layer = layui.layer //弹层
        ,table = layui.table //表格
        ,$ = layui.jquery
        ,form = layui.form;

    //执行一个 table 实例
    table.render({
        elem: '#empTable'
        ,totalRow: true
        ,id:'bookReload'
        ,height: 620
        ,page:true
        ,url: 'tem/findOne?stuid='+stuid //数据接口
        ,title: '信息表'
        ,toolbar: 'default' //开启工具栏，此处显示默认图标，可以自定义模板，详见文档
        ,cols: [[ //表头
            {field: 'id', title: '编号', sort: true,  width:180}
            ,{field: 'createtime', title: '创建时间', width:180}
            ,{field: 'wd', title: '温度', width:180,templet: function(d) {
                    var span="";
                    if (d.wd==null){
                        return ""
                    }
                    if (d.wd>=37.3){
                        return span += '<span style="color: red">'+d.wd+'</span>';
                    }
                    return d.wd;
                }}
            ,{field: 'student', title: '姓名', width:180, templet: function(d){
            //         var span="";
            //         if (d.wd>=37.3){
            //             return span += '<span style="color: red">'+d.student.stuname+'</span>';
            //         }
                    return d.student.stuname;
                }
                }
            ,{field: 'student', title: '性别', width:180 ,templet: function(d){
                    return d.student.sex;
                }}
        ]]
    });
});
Controller

创建 session对象 转换为 id所在类的对象，通过session对象的get方法获取到前台传来的id，

public String findTem(HttpSession session){
    Student stu = (Student) session.getAttribute("stu");
    JsonData jsonData = temService.findTem(stu.getStuid());
    return JSON.toJSONString(jsonData);
}

添加和修改

public String saveTem(Temperature temperature,HttpSession session){
    Student stu = (Student) session.getAttribute("stu");
    temperature.setStudent(stu);
    String format = new SimpleDateFormat("yyyy-MM-dd").format(new Date());
    temperature.setCreatetime(format);
    JsonData jsonData = temService.saveTem(temperature);
    return JSON.toJSONString(jsonData);
}

详情查询

@RequestMapping("/findOne")
public String findOne(int stuid){
    JsonData jsonData = temService.findTem(stuid);
    return JSON.toJSONString(jsonData);
}

 
serviceImpl
(老样子没啥可说了)

package com.hp.service.impl;

import com.hp.mapper.TemMapper;
import com.hp.pojo.Temperature;
import com.hp.service.TemService;
import com.hp.util.JsonData;
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 TemServiceImpl implements TemService {
    @Autowired
    private TemMapper temMapper;
    @Override
    public JsonData findTem(Integer stuid) {
        List<Temperature> tem = temMapper.findTem(stuid);
        return JsonData.buildSuccess(tem);
    }

    @Override
    public JsonData saveTem(Temperature temperature) {
        int i=0;
        if (temperature.getId()!=null){
            i=temMapper.editTem(temperature);
        }else {
            i=temMapper.addTem(temperature);
        }
        if (i>0){
            return JsonData.buildSuccess("保存或修改成功");
        }
        return JsonData.buildError("保存或修改失败");
    }

    @Override
    public JsonData delTem(int id) {
        int i = temMapper.delTem(id);
        if (i>0){
            return JsonData.buildSuccess("del success");
        }
        return JsonData.buildError("del error");
    }

}
mapper.xml

<?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.hp.mapper.TemMapper">
    <resultMap id="Tem" type="com.hp.pojo.Temperature">
        <id property="id" column="id"></id>
        <result property="createtime" column="createtime"/>
        <result property="wd" column="wd"/>
        <association property="student" column="stuid" javaType="com.hp.pojo.Student">
            <id property="stuid" column="stuid"/>
            <result property="username" column="username"/>
            <result property="pwd" column="pwd"/>
            <result property="stuname" column="stuname"/>
            <result property="sex" column="sex"/>
            <result property="status" column="status"/>
        </association>
    </resultMap>

    <select id="findTem" resultMap="Tem">
       SELECT t.*, s.username,s.pwd,s.stuname,s.sex FROM temperature t, student s WHERE s.stuid = t.stuid and s.stuid=#{stuid}
    </select>
    <insert id="addTem">
        insert into temperature (createtime,wd,stuid) VALUES(#{createtime},#{wd},#{student.stuid})
    </insert>
    <update id="editTem">
        update temperature set  createtime=#{createtime},wd=#{wd},stuid=#{student.stuid} where id=#{id};
    </update>
    <delete id="delTem">
        delete from temperature where id=#{id}
    </delete>
</mapper>