Java動態數據生成PDF文檔及下載
阿新 • • 發佈：2018-07-11
當前 日期 數據 obj 中文 獲取 ont logger time 查了很多 aozbbs.com Q1446595067 資料都沒有我想要的pdf，於是根據iText基礎知識（這裏是看了寶爺的筆記點擊打開鏈接）自行編輯了一個簡單的表格pdf文檔
list = new ArrayList();
List pdflist = new ArrayList();
try {
list = (List) JacksonUtil.toList(alllist, ArrayList.class, BC90.class);//這是我自定義的String轉list集合方法，跳過
for (BC90 bc90 : list) {
DWPdf dpdf = new DWPdf();
dpdf.setRownum(bc90.getRownum());
dpdf.setAac003(bc90.getAac003());
dpdf.setAac002(bc90.getAac002());
dpdf.setAbc939(bc90.getAbc939());
dpdf.setAbc913(bc90.getAbc913());
dpdf.setAbc914(bc90.getAbc914());
dpdf.setAbc909(bc90.getAbc909());
pdflist.add(dpdf);
}
} catch (Exception e) {
e.printStackTrace();
log.error("逾期合同json轉換出錯",e);
}
/*******pdf文件內容生成開始*********/
Document document = new Document(PageSize.A4, 25, 25, 25, 25);
//創建文件夾
String filePar = null;
Date nowTime = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd.hh.mm.ss");
String time = sdf.format(nowTime);//獲取當前時間字符串形式
filePar = "C:/企業逾期合同"+time;// 文件夾路徑
File myPath = new File( filePar );
file = new File(filePar+"/"+"企業逾期合同.pdf");
if (!myPath.exists()){
myPath.mkdir();
}
/*
* import com.lowagie.text.pdf.PdfWriter;
*/
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(file));// throws FileNotFoundException,
// DocumentException
document.open();
/*
* 設中文字體
*/
BaseFont bfChinese = null;// FontFactory.getFont(FontFactory.COURIER,
// 14, Font.BOLD, new CMYKColor(0, 255, 0, 0);//大小，粗細，顏色
try {
bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H",
BaseFont.NOT_EMBEDDED);
} catch (IOException e) {
e.printStackTrace();
}
//定義中文字體大小
Font f10 = new Font(bfChinese, 10, Font.NORMAL);
Font f12 = new Font(bfChinese, 12, Font.NORMAL);
Font f26 = new Font(bfChinese, 26, Font.NORMAL);//一號字體
/*
* 創建標題
*/
Paragraph title1 = new Paragraph("標 題", f26);
title1.setAlignment(Element.ALIGN_CENTER);
Chapter chapter1 = new Chapter(title1, 1);
chapter1.setNumberDepth(0);
Section section1 = chapter1;
// 創建有7列的表格
int colNumber = 7;
PdfPTable t = new PdfPTable(colNumber);
t.setSpacingBefore(25);//設置段落上空白
t.setSpacingAfter(25);//設置段落上下空白
t.setHorizontalAlignment(Element.ALIGN_CENTER);// 居左
float[] cellsWidth = { 0.08f, 0.1355f, 0.2f, 0.3f, 0.2f, 0.2f , 0.145f }; // 定義表格的寬度
t.setWidths(cellsWidth);// 單元格寬度
t.setTotalWidth(500f);//表格的總寬度
t.setWidthPercentage(100);// 表格的寬度百分比
//設置表頭
PdfPCell c1 = new PdfPCell(new Paragraph("序號",f12));
t.addCell(c1);
PdfPCell c2 = new PdfPCell(new Paragraph("姓名",f12));
t.addCell(c2);
PdfPCell c3 = new PdfPCell(new Paragraph("×××號",f12));
t.addCell(c3);
PdfPCell c4 = new PdfPCell(new Paragraph("單位名稱",f12));
t.addCell(c4);
PdfPCell c5 = new PdfPCell(new Paragraph("合同開始日期",f12));
t.addCell(c5);
PdfPCell c6 = new PdfPCell(new Paragraph("合同結束日期",f12));
t.addCell(c6);
PdfPCell c7 = new PdfPCell(new Paragraph("合同狀態",f12));
t.addCell(c7);
//向表格類動態填充list集合數據
for(int i=0;i delWrList = BC90Mapper.delWarnPdfPrint(aab001);
Map pdfMap = new TreeMap();
Map allMap = new TreeMap();
allMap.put("delWrList", delWrList);
return JsonUtil.toJson(delWrList);//這裏是自定義方法轉譯維json字符串返回數據
}
return respErrorMsg("請重新登入系統或刷新頁面");
}
mapper層
List delWarnPdfPrint(String aab001);
寫了那麽多來看看效果吧
運用MVC springCXF
需要的jar包：https://download.csdn.net/download/weixin_40989555/10487913
jar包已經解決中文的編碼問題，可以直接使用。
若編寫多行多列表格（maven依賴）：
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itextpdf</artifactId>
</dependency>話不多說，下面進行編碼。
jsp頁面
js /** * 點擊“是”進行PDF打印 */ function pdfPrint(){ var aab001 = qdw_aab001; document.getElementById("form_delayWarn").action = "./lrs/querydelay/delWarnPdfPrint.do?aab001=" + aab001; return doConfirm("下載", function() { document.getElementById("form_delayWarn").submit(); }); /* 直接新開一個頁面顯示不下載 (js2方法) var url = "./lrs/querydelay/delWarnPdfPrint.do?aab001=" + aab001; window.open(url, "xxxxxxx"); */ } Controller層 import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.net.URLEncoder; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import com.itextpdf.text.Element; import com.lowagie.text.Chapter; import com.lowagie.text.Document; import com.lowagie.text.Font; import com.lowagie.text.PageSize; import com.lowagie.text.Paragraph; import com.lowagie.text.Section; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.PdfPCell; import com.lowagie.text.pdf.PdfPTable; import com.lowagie.text.pdf.PdfWriter; private QueryDelayServiceq qdService; @SuppressWarnings("unchecked") @RequestMapping(value = "/delWarnPdfPrint" , method = RequestMethod.POST) @ResponseBody public String delWarnPdfPrint(String aab001, HttpServletRequest req, HttpServletResponse resp) throws Exception { log.info("xxxxPDF打印-返回數據"); //返回list集合數據 String alllist = qdService.delWarnPdfPrint(aab001); File file = null; InputStream fin = null; ServletOutputStream out = null; ListJava動態數據生成PDF文檔及下載