Spring Data JPA 多属性排序

参考https://segmentfault.com/a/1190000000412105
参考http://blog.csdn.net/qq_23660243/article/details/43371969

public class WatchPoint  {

    private Section section;// 区间
    private String rangeMileage;里程
}

public class Section{

    private Railway railway;//线路
}

public class Railway {

    private Railway railway;//线路
    private String name;//名称
}

import org.springframework.data.domain.Sort;
import org.springframework.data.domain.Sort.Direction;
import org.springframework.data.domain.Sort.Order;

public void test(){

    //按线路降序和里程升序排序  
    Sort sort = new Sort(Sort.Direction.DESC, "section.railway.name").and(new Sort(Sort.Direction.ASC, "rangeMileage"));

    //按线路降序和里程升序排序  
    Order nameOrder = new Order(Direction.DESC, "section.railway.name");
    Order rangeOrder = new Order(Direction.ASC, "rangeMileage");
    List<Order> orders = new ArrayList<Order>();    
    orders.add(nameOrder);//先按线路降序
    orders.add(rangeOrder);//再按里程升序
    Sort sort2 = new Sort(orders);

    //按线路升序和里程升序排序              
    Sort sort = new Sort(Direction.fromString("asc"), "section.railway.name", "rangeMileage");
}