导出Excel
.........\picExcel.java
.........\需用到的xls文件
.........\...............\PicStat.xls
.........\...............\statPic.xls
.........\需要用到的Jar包
.........\...............\commons-io-1.1.jar
.........\...............\excelutils.jar
.........\...............\poi-3.0.1.jar
.........\...............\tm-extractors-0.4.jar