public Map<String, CellStyle> getCellStylePool() {
        if (null == this.cellStylePool) {
            this.cellStylePool = new HashMap<String, CellStyle>(16);
        }
        return this.cellStylePool;
    }
public Map < String , CellStyle > getCellStylePool ( ) { if ( null == this . cellStylePool ) { this . cellStylePool = new HashMap < String , CellStyle > ( 16 ) ; } return this . cellStylePool ; }
获取自定义cellStyle池

@return 自定义cellStyle池