Java Map集合解析

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Map<String, String> map = new HashMap<String, String>();          map.put("user.1.name","user1");          map.put("user.2.age","user2");          map.put("user.3.count","user3");                    map.put("bank.1.name","bank1");          map.put("bank.2.price","bank2");          map.put("bank.3.count","bank3");                    Map<String,Object> records = new HashMap<String,Object>();          for (Object obj : map.entrySet()) {              Map.Entry entry = (Map.Entry)obj;              String k = (String)entry.getKey();              String v = (String)entry.getValue();              int i = k.indexOf(".");              int j = k.lastIndexOf(".");              if(i>0 && j>0){                  String tableName = k.substring(0, i);                  String rowNo = k.substring(i+1, j);                  String fieldName = k.substring(j+1);                  Map<String,Object> rows = (Map<String,Object>)records.get(tableName);                  if(rows==null){                      rows = new HashMap<String, Object>();                      records.put(tableName, rows);                  }                  Map<String, Object> row = (Map<String, Object>)rows.get(rowNo);                  if(row==null){                      row = new HashMap<String, Object>();                      rows.put(rowNo, row);                  }                  row.put(fieldName, v);              }          }          for (Object obj : records.keySet()) {              Map<String,Object> rows = (Map<String,Object>)records.get(obj);              for (int i = 1; i < rows.size()+1; i++) {                  Map<String, Object> row = (Map<String, Object>)rows.get(String.valueOf(i));                  for (Object o : row.entrySet()) {                      Map.Entry entry = (Map.Entry)o;                      String k = (String)entry.getKey();                      String v = (String)entry.getValue();                      System.out.println("k :"+k+" v:"+v);                  }              }          }
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