一段树状无限制级代码

1 数据库对应实体 ReportDeleteIndex.java

/** * 作者 : ** * 时间 : 20170519 * 类描述 : 问题屏蔽 * 表 TB_JN_INDEX_DELETE  * */public class ReportDeleteIndex {private Integer id; //idprivate Integer pid; // 父级idprivate String indexName; // 指标名称private Integer order; // 排序private String delSql; // 删除语句private List<ReportDeleteIndex> reportDeleteIndexList = new ArrayList<ReportDeleteIndex>(); public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public Integer getPid() {return pid;}public void setPid(Integer pid) {this.pid = pid;}public String getIndexName() {return indexName;}public void setIndexName(String indexName) {this.indexName = indexName;}public Integer getOrder() {return order;}public void setOrder(Integer order) {this.order = order;}public String getDelSql() {return delSql;}public void setDelSql(String delSql) {this.delSql = delSql;}public List<ReportDeleteIndex> getReportDeleteIndexList() {return reportDeleteIndexList;}public void setReportDeleteIndexList(List<ReportDeleteIndex> reportDeleteIndexList) {this.reportDeleteIndexList = reportDeleteIndexList;}}

2 数据库表

3 实现方法

public String getReportDeleteIndexs(HttpServletRequest request, HttpServletResponse response){String result = null;List<ReportDeleteIndex> reportDeleteIndexList =  this.reportDeleteIndexService.getReportDeteleIndexs();if(reportDeleteIndexList==null||reportDeleteIndexList.size()==0) return JsonUtil.getJson(false, "暂无数据");Map<Integer,ReportDeleteIndex> reportDeleteIndexMap = new HashMap<Integer,ReportDeleteIndex>();List<ReportDeleteIndex> resultList  = new ArrayList<ReportDeleteIndex>();for(ReportDeleteIndex reportDeleteIndex:reportDeleteIndexList){Integer id = reportDeleteIndex.getId();Integer pid = reportDeleteIndex.getPid();reportDeleteIndex.setDelSql("");reportDeleteIndexMap.put(id, reportDeleteIndex);if(!reportDeleteIndexMap.containsKey(pid)){resultList.add(reportDeleteIndex);}else{ReportDeleteIndex parentReportDeleteIndex = reportDeleteIndexMap.get(pid);parentReportDeleteIndex.getReportDeleteIndexList().add(reportDeleteIndex);}}result = JsonUtil.getJson(true, "查询成功", resultList);LOG.debug("result = " + result);return result;}