MyBatis 分页插件 PageHelper

在使用PageHelper分页插件时要先添加PageHelper依赖

         
            com.github.pagehelper
            pagehelper-spring-boot-starter
            1.3.1
        

PageHelper类调用父类的startPage()方法并传参，获取Page对象。可以通过此对象获得总记录数。
Page对象内部的属性:

public class Page extends ArrayList implements Closeable {
    private static final long serialVersionUID = 1L;
    private int pageNum;
    private int pageSize;
    private long startRow;
    private long endRow;
    private long total;
    private int pages;
    private boolean count;
    private Boolean reasonable;
    private Boolean pageSizeZero;
    private String countColumn;
    private String orderBy;
    private boolean orderByOnly;
    private BoundSqlInterceptor boundSqlInterceptor;
    private transient Chain chain;

PageHelper分页插件具体使用如下:

@Service
public class SysUserServiceImpl implements SysUserService {
    @Autowired
    private SysUserDao sysUserDao;

    @Override
    public PageObject findPageObjects(String username, Integer pageCurrent) {
        int pageSize = 5;
        Page