java怎么實(shí)現(xiàn)下載指定網(wǎng)頁中包含的pdf文件。 求代碼？

解析指定頁面，得到pdf文件的地址，用URL來取回pdf的輸入流，然后寫到本地文件。

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java項(xiàng)目中怎么實(shí)現(xiàn)模板管理?

最好是將模版定義為格式話好的文件，數(shù)據(jù)庫里面存模版的名字，這樣通過關(guān)鍵判斷使用什么模版，希望能幫到你

java項(xiàng)目中怎么實(shí)現(xiàn)jsp頁面Excel模板下載并彈框。

controller層關(guān)鍵代碼：

@RequestMapping(value?=?"/excel")

public?ModelAndView?exportExcel()?throws?Exception?{

ModelAndView?mv?=?new?ModelAndView();

PageData?pd?=?new?PageData();

pd?=?this.getPageData();

MapString,?Object?dataMap?=?new?HashMapString,?Object();

ListString?titles?=?new?ArrayListString();

titles.add("辦事處");?//?1

titles.add("當(dāng)日新增掃碼商戶（個(gè)）");?//?2

titles.add("當(dāng)日交易筆數(shù)（筆）");?//?3

titles.add("當(dāng)日交易金額");?//?4

titles.add("當(dāng)日收益");?//?5

titles.add("累計(jì)新增掃碼商戶（個(gè)）");?//?6

titles.add("累計(jì)交易筆數(shù)（筆）");?//?7

titles.add("累計(jì)交易金額");?//?8

titles.add("累計(jì)收益");?//?9

dataMap.put("titles",?titles);

Page?page?=?new?Page();

page.setPd(pd);

ListPageData?varOList?=?agencyService.list(page);

ListPageData?varList?=?new?ArrayListPageData();

for?(int?i?=?0;?i??varOList.size();?i++)?{

PageData?vpd?=?new?PageData();

vpd.put("var1",?varOList.get(i).get("AGENCYNAME").toString());?//?1

vpd.put("var2",?varOList.get(i).get("TODAYINSTALL").toString());?//?2

vpd.put("var3",?varOList.get(i).get("TODAYTRANS").toString());?//?3

vpd.put("var4",?varOList.get(i).get("TODAYPRICE").toString());?//?4

vpd.put("var5",?varOList.get(i).get("TODAYPAYMENT").toString());?//?5

vpd.put("var6",?varOList.get(i).get("TOTALINSTALL").toString());?//?6

vpd.put("var7",?varOList.get(i).get("TOTALTRANS").toString());?//?7

vpd.put("var8",?varOList.get(i).get("TOTALPRICE").toString());?//?8

vpd.put("var9",?varOList.get(i).get("TOTALPAYMENT").toString());?//?9

varList.add(vpd);

}

dataMap.put("varList",?varList);

ObjectExcelView?erv?=?new?ObjectExcelView();

mv?=?new?ModelAndView(erv,?dataMap);

return?mv;

}

POI生成EXCEL關(guān)鍵代碼：

public?class?ObjectExcelView?extends?AbstractExcelView{

@SuppressWarnings("deprecation")

@Override

protected?void?buildExcelDocument(MapString,?Object?model,

HSSFWorkbook?workbook,?HttpServletRequest?request,

HttpServletResponse?response)?throws?Exception?{

//?TODO?Auto-generated?method?stub

Date?date?=?new?Date();

String?filename?=?Tools.date2Str(date,?"yyyyMMddHHmmss");

HSSFSheet?sheet;

HSSFCell?cell;

response.setContentType("application/octet-stream");

response.setHeader("Content-Disposition",?"attachment;filename="+filename+".xls");

sheet?=?workbook.createSheet("sheet1");

ListString?titles?=?(ListString)?model.get("titles");

int?len?=?titles.size();

HSSFCellStyle?headerStyle?=?workbook.createCellStyle();?//標(biāo)題樣式

headerStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);

headerStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);

HSSFFont?headerFont?=?workbook.createFont(); //標(biāo)題字體

headerFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

headerFont.setFontHeightInPoints((short)11);

headerStyle.setFont(headerFont);

short?width?=?20,height=25*20;

sheet.setDefaultColumnWidth(width);

for(int?i=0;?ilen;?i++){?//設(shè)置標(biāo)題

String?title?=?titles.get(i);

cell?=?getCell(sheet,?0,?i);

cell.setCellStyle(headerStyle);

setText(cell,title);

}

sheet.getRow(0).setHeight(height);

HSSFCellStyle?contentStyle?=?workbook.createCellStyle();?//內(nèi)容樣式

contentStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);

ListPageData?varList?=?(ListPageData)?model.get("varList");

int?varCount?=?varList.size();

for(int?i=0;?ivarCount;?i++){

PageData?vpd?=?varList.get(i);

for(int?j=0;jlen;j++){

String?varstr?=?vpd.getString("var"+(j+1))?!=?null???vpd.getString("var"+(j+1))?:?"";

cell?=?getCell(sheet,?i+1,?j);

cell.setCellStyle(contentStyle);

setText(cell,varstr);

}

}

}

}