1.准备工作
oracle数据库“tbyzb_field_pressure”表中数据如图：
excel模板(201512.xls)：
2.任务说明
我们要完成的任务就是将表“tbyzb_field_pressure”中的数据，按照excel模板(201512.xls)的样式导入到一个新的excel中。即：excel模板(201512.xls)不改变，生成一个和它一样的excel并且导入数据。
3.关键代码
// 使用fieldpressentity中的每一个entity，一个entity包含了所有属性
public void insertintoexcel(string yyyy, string mm) throws exception {
list<fieldpressentity> result = tyfieldpressdao.search(yyyy, mm);
// 读取excel的模板
hssfworkbook workbook = new hssfworkbook(new fileinputstream(new file(
"d:/201512.xls")));
hssfsheet sheet = null;
// 读取sheet的模板
sheet = workbook.getsheetat(0);
// 定义行
hssfrow row;
// 定义单元格
hssfcell cell;
// for循环，循环目标为行循环
for (int i = 0; i < result.size(); i++) {
system.out.println(result.size());
// 给e循环赋值
fieldpressentity e = result.get(i);
// 循环行
row = sheet.getrow(3 + i);
// 给行内的单元格赋值
cell = row.getcell(1);
cell.setcellvalue(e.geth17());
system.out.println(i + "i内+" + e.geth17());
cell = row.getcell(2);
cell.setcellvalue(e.geth18());
system.out.println(i + "i内+" + e.geth18());
cell = row.getcell(3);
cell.setcellvalue(e.geth19());
system.out.println(i + "i内+" + e.geth19());
cell = row.getcell(4);
cell.setcellvalue(e.geth20());
system.out.println(i + "i内+" + e.geth20());
cell = row.getcell(5);
cell.setcellvalue(e.geth21());
system.out.println(i + "i内+" + e.geth21());
cell = row.getcell(6);
cell.setcellvalue(e.geth22());
system.out.println(i + "i内+" + e.geth22());
cell = row.getcell(7);
cell.setcellvalue(e.geth23());
system.out.println(i + "i内+" + e.geth23());
cell = row.getcell(8);
cell.setcellvalue(e.geth00());
system.out.println(i + "i内+" + e.geth00());
cell = row.getcell(9);
cell.setcellvalue(e.geth01());
system.out.println(i + "i内+" + e.geth01());
cell = row.getcell(10);
cell.setcellvalue(e.geth02());
system.out.println(i + "i内+" + e.geth02());
cell = row.getcell(11);
cell.setcellvalue(e.geth03());
system.out.println(i + "i内+" + e.geth03());
cell = row.getcell(12);
cell.setcellvalue(e.geth04());
system.out.println(i + "i内+" + e.geth04());
cell = row.getcell(13);
cell.setcellvalue(e.geth05());
system.out.println(i + "i内+" + e.geth05());
cell = row.getcell(14);
cell.setcellvalue(e.geth06());
system.out.println(i + "i内+" + e.geth06());
cell = row.getcell(15);
cell.setcellvalue(e.geth07());
system.out.println(i + "i内+" + e.geth07());
cell = row.getcell(16);
cell.setcellvalue(e.geth08());
system.out.println(i + "i内+" + e.geth08());
cell = row.getcell(17);
cell.setcellvalue(e.geth09());
system.out.println(i + "i内+" + e.geth09());
cell = row.getcell(18);
cell.setcellvalue(e.geth10());
system.out.println(i + "i内+" + e.geth10());
cell = row.getcell(19);
cell.setcellvalue(e.geth11());
system.out.println(i + "i内+" + e.geth11());
cell = row.getcell(20);
cell.setcellvalue(e.geth12());
system.out.println(i + "i内+" + e.geth12());
cell = row.getcell(21);
cell.setcellvalue(e.geth13());
system.out.println(i + "i内+" + e.geth13());
cell = row.getcell(22);
cell.setcellvalue(e.geth14());
system.out.println(i + "i内+" + e.geth14());
cell = row.getcell(23);
cell.setcellvalue(e.geth15());
system.out.println(i + "i内+" + e.geth15());
cell = row.getcell(24);
cell.setcellvalue(e.geth16());
system.out.println(i + "i内+" + e.geth16());
cell = row.getcell(25);
cell.setcellvalue(e.getdaily_sum());
system.out.println(i + "i内+" + e.getdaily_sum());
cell = row.getcell(26);
cell.setcellvalue(e.getdaily_avg());
system.out.println(i + "i内+" + e.getdaily_avg());
cell = row.getcell(27);
cell.setcellvalue(e.getdaily_max());
system.out.println(i + "i内+" + e.getdaily_max());
cell = row.getcell(28);
cell.setcellvalue(e.getdaily_min());
system.out.println(i + "i内+" + e.getdaily_min());
}
// 写入一个新的excel表内
fileoutputstream out = new fileoutputstream(new file("e:/"+yyyy+mm+".xls"));
// excel表写入完成
workbook.write(out);
// excel表退出
out.close();
}
总结：我们这个项目用的是ssh架构，如果想使用以上代码，需要按照ssh的规范，定义dao action service entity四个包，如果需要页面操作还需要js做页面。
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