如何对List(Map)进行Stream排序

 List<Map<String, String>>  多字段排序

页面传入的多个排序字段

 

 

排序字段

public class ReFormSort {
  //"列名"
  private String columnEname;
  //"ASC升序，DESC降序"
  private String sort;
}

 

 代码里进行多字段排序

      List<Map<String, String>> content = formDataService.searchFormData(paras);
      List<ReFormSort> sorts = paras.getSorts();    //多个排序字段
      for (int i = 0; i < sorts.size(); i++) {
        String columnEname = sorts.get(i).getColumnEname();
        if (!StringUtils.isEmpty(sorts.get(i).getColumnEname()) && "asc".equals(sorts.get(i).getSort())) {   //正序
          content.sort(Comparator.comparing((Map<String, String> h) -> (h.get(columnEname))));
        }
        if (!StringUtils.isEmpty(sorts.get(i).getColumnEname()) && "desc".equals(sorts.get(i).getSort())) {
          content.sort(Comparator.comparing((Map<String, String> h) -> (h.get(columnEname))).reversed());  //倒序
        }

      }

 

 

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