通用实体

package com.aaa.util;

/**
 * @Author: 0808
 * @Date: 2020/7/13 0013 10:39
 * @Version 1.0
 * 常量类
 */
public class MyConstants {
   /**保存操作*/
    public static final String SAVE_OPERATION="save";
    /**修改操作*/
    public static final String UPDATE_OPERATION="update";
    /**加密算法*/
    public static final String ALGORITHM_NAME="MD5";
    /**加密次数*/
    public static final   int HASH_ITERATIONS=1000;
    /** 操作成功信息 */
    public static final String OPERATION_SUCCESS_MESSAGE="操作成功";
    /** 操作成功代码 */
    public static final int OPERATION_SUCCESS_CODE=0;
    /** 操作失败信息 */
    public static final String OPERATION_FAIL_MESSAGE="操作失败";
    /** 操作失败代码 */
    public static final int OPERATION_FAIL_CODE=1;
    /** 柴油（大型加油站）阈值第一条数据 */
    public static final int DIESELOIL_BIG=0;
    /** 柴油（中型加油站）阈值第二条数据 */
    public static final int DIESELOIL_BETWEEN=1;
    /** 柴油（小型加油站）阈值第三条数据 */
    public static final int DIESELOIL_SMALL=2;
    /** 汽油（大型加油站）阈值第四条数据 */
    public static final int GASOLINEOIL_BIG=3;
    /** 汽油（中型加油站）阈值第五条数据 */
    public static final int GASOLINEOIL_BETWEEN=4;
    /** 汽油（小型加油站）阈值第六条数据 */
    public static final int GASOLINEOIL_SMALL=5;
    /** 变量为0的值 */
    public static final int INTVALUE_ZERO=0;
}

 

状态码

package com.cws.db_car.entity;

import lombok.Data;

import java.util.List;

/**
 * @Author: 0808
 * @Date: 2020/7/10 0010 16:10
 * @Version 1.0
 */
@Data
public class LayUiTable {
    private int code;
    private String msg;
    private Integer count;
    private List<?> data;
}

 

查询&&模糊&&分页

    /**
     * 查询所有汽车和模糊查询分页
     * @param page
     * @param limit
     * @param searchTypename
     * @return
     */
    @RequestMapping("/listCar")
    @ResponseBody
    public LayUiTable listCar(Integer page, Integer limit , String searchTypename) {
        LayUiTable table = new LayUiTable();
        //多条件查询所需要的集合
        Map<String ,Object> condition= new HashMap(16);
        Wrapper wrapper = new EntityWrapper();
        //添加模糊查询的条件
        if (null != searchTypename && !"".equals(searchTypename)) {
            condition.put("typename", searchTypename);
        }
        int i = tCarService.selectCount(wrapper);

        if(i>0){
            //获取当前的系统毫秒数
            Page<TCarVo> pageInfo = new Page(page, limit);
            List<TCarVo> tCarVoList = tCarService.selectList(pageInfo, condition);
            //从分页结果中提取list集合
            table.setCode(MyConstants.OPERATION_SUCCESS_CODE);
            table.setMsg(MyConstants.OPERATION_SUCCESS_MESSAGE);
            table.setData(tCarVoList);
            table.setCount(i);
        }
        return table;

    }