springboot 分頁

集團商戶

（支持牽頭行和總行的分潤模式）

分潤比例設置、資金流向

（分潤部分收入按月彙總）

<dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper</artifactId>
            <version>5.1.2</version>
        </dependency>
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-autoconfigure</artifactId>
            <version>1.2.10</version>
        </dependency>
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.10</version>
        </dependency>

spring:
    datasource:
        driver-class-name: com.mysql.cj.jdbc.Driver
        password: 123456
        url: jdbc:mysql://localhost:3306/house_agent?characterEncoding=utf8&useSSL=true&serverTimezone=Asia/Shanghai&useUnicode=true
        username: root
pagehelper:
    helper-dialect: mysql #數據庫方言
    reasonable: true      #分頁合理化
    support-methods-arguments: true #是否支持接口參數來傳遞分頁參數，默認false
    page-size-zero: true #當設置爲true的時候，如果pagesize設置爲0（或RowBounds的limit=0），就不執行分頁，返回全部結果
    params: count=countSql

    @GetMapping("test")
    public PageInfo<User> test(@RequestParam Integer pageNum, @RequestParam Integer pageSize) {

        Map<Object, Object>     concurrentHashMap = new ConcurrentHashMap<>();
        HashMap<Object, Object> hashMap           = new HashMap<>();
        PageHelper.startPage(pageNum, pageSize);
        List<User>     users    = userMapper.selectAll();
        PageInfo<User> pageInfo = new PageInfo<User>(users); //Missing Servlet Request Parameter Exception
        return pageInfo;
    }