java 递归查询树形结构

CREATE TABLE "T_MB_PEAK_POWERTYPE"
   (	"TYPEID" NUMBER(4,0) NOT NULL ENABLE, 
	"TYPENAME" VARCHAR2(100 BYTE) NOT NULL ENABLE, 
	"UPTYPEID" NUMBER(4,0), 
	"TYPELEVEL" NUMBER(4,0) NOT NULL ENABLE, 
	"ORDERNO" NUMBER(4,0), 
	"DESCRIBE" VARCHAR2(255 BYTE), 
	"VALID" VARCHAR2(8 BYTE)

）

COMMENT ON COLUMN "BSP_HUABEI"."T_MB_PEAK_POWERTYPE"."TYPEID" IS '类别ID';
 
   COMMENT ON COLUMN "BSP_HUABEI"."T_MB_PEAK_POWERTYPE"."TYPENAME" IS '类别名称';
 
   COMMENT ON COLUMN "BSP_HUABEI"."T_MB_PEAK_POWERTYPE"."UPTYPEID" IS '父类别ID';
 
   COMMENT ON COLUMN "BSP_HUABEI"."T_MB_PEAK_POWERTYPE"."TYPELEVEL" IS '类别级别';
 
   COMMENT ON COLUMN "BSP_HUABEI"."T_MB_PEAK_POWERTYPE"."ORDERNO" IS '显示顺序';
 
   COMMENT ON COLUMN "BSP_HUABEI"."T_MB_PEAK_POWERTYPE"."DESCRIBE" IS '注释信息';
 
   COMMENT ON COLUMN "BSP_HUABEI"."T_MB_PEAK_POWERTYPE"."VALID" IS '是否有效(Y有效N表示无效)';

/** * 查询树形结构 * @param id : 父id */ @SuppressWarnings("unchecked") public void iterative(int id){ String sql = "select typeid , typename , uptypeid , typelevel , orderno from T_MB_PEAK_POWERTYPE where uptypeid = ? "; List<HashMap<String , Object>> list = super.getJdbcTemplate().query(sql, new Object[]{id} ,new MyRowMapper()) ; if(list!=null && list.size() >0){ for(HashMap<String , Object> map : list){ // 主键id int typeid = TypeUtil.toInt(map.get("typeid")); String typename = String.valueOf(map.get("typename")); System.out.println(typename); iterative(typeid); } } }