Java使用itextpdf导出数据为PDF
导包
pom.xml引入jar包
// itextpdf
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itextpdf</artifactId>
<version>5.5.1</version>
</dependency>
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itext-asian</artifactId>
<version>5.2.0</version>
</dependency>
字体
在resources文件夹下创建文件夹pdfFont，放入simhei.ttf(黑体)字体文件，备用
导出
ElectricityPlanDTO 类为导出数据对象
传入作为页面条件查询过滤数据
/**
* 导出用户信息到excel/pdf
* @return
*/
@SuppressWarnings("unchecked")
@RequestMapping(value = "/exportPDF" , method = RequestMethod.GET)
@ResponseBody
public String delWarnPdfPrint( ElectricityPlanDTO electricityPlanDTO,HttpServletRequest req, HttpServletResponse resp) throws Exception {
File file = null;
InputStream fin = null;
ServletOutputStream out = null;
/*******pdf文件内容生成开始*********/
Document document = new Document(PageSize.A4, 25, 25, 25, 25);
Subject subject = SecurityUtils.getSubject();
SysUser sysUser = (SysUser)subject.getPrincipal();
List<ElectricityPlanDTO> planList = electricityPlanService.getElectricByPlan(sysUser.getDeptid(),electricityPlanDTO);
Map<String,Object> dataMap = new HashMap<String,Object>();
List<String> titles = new ArrayList<String>();
titles.add("序号");
titles.add("客户名称");
titles.add("统一社会信用代码");
titles.add("计划电量");
titles.add("申报年月");
titles.add("更新时间");
titles.add("状态");
dataMap.put("titles", titles);
dataMap.put("list", planList);
dataMap.put("title_content", "电量申报");
dataMap.put("type", "table");
//创建文件夹
String filePar = null;
Date nowTime = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddhhmmss");
String time = sdf.format(nowTime);//获取当前时间字符串形式
filePar = "C:" + File.separator + "electricityplan"+System.nanoTime();// 文件夹路径
File myPath = new File( filePar );
// file = File.createTempFile("temp", Long.toString(System.nanoTime()));
// file = new File(filePar+"/"+"电量申报.pdf");
if (!myPath.exists()){
myPath.mkdir();
}
file = new File(filePar + File.separator, time+".pdf");
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(file));// throws FileNotFoundException,
/*
* 设中文字体
*/
BaseFont bfChinese = null;// FontFactory.getFont(FontFactory.COURIER,
// 14, Font.BOLD, new CMYKColor(0, 255, 0, 0);//大小，粗细，颜色
try {
bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H",
BaseFont.NOT_EMBEDDED);
} catch (IOException e) {
e.printStackTrace();
}
try {
//加入页码
// setFooter(writer,PDFUtil.bfChinese,10,PageSize.A4);
document.open();
//图片1
String CHARACTOR_FONT_CH_BLACK = Thread.currentThread().getContextClassLoader().getResource("").getPath();
String realReadPath = CHARACTOR_FONT_CH_BLACK + "pdfFont/elogo.png";
Image image1 = Image.getInstance(realReadPath);
//设置图片位置的x轴和y周
image1.setAbsolutePosition(50f, 780f);
//设置图片的宽度和高度
image1.scaleAbsolute(125, 40);
//将图片1添加到pdf文件中
document.add(image1);
// // 加入文字水印
// PdfContentByte waterMar = writer.getDirectContentUnder();
// // 开始设置水印
// waterMar.beginText();
// // 设置水印透明度
// PdfGState gs = new PdfGState();
// // 设置填充字体不透明度为0.4f
// gs.setFillOpacity(0.4f);
// try {
// // 设置水印字体参数及大小 (字体参数，字体编码格式，是否将字体信息嵌入到pdf中（一般不需要嵌入），字体大小)
// waterMar.setFontAndSize(BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED), 60);
// // 设置透明度
// waterMar.setGState(gs);
// // 设置水印对齐方式 水印内容 X坐标 Y坐标 旋转角度
// waterMar.showTextAligned(Element.ALIGN_RIGHT, "国网南京供电公司" , 500, 430, 45);
// // 设置水印颜色
// waterMar.setColorFill(BaseColor.GRAY);
// //结束设置
// waterMar.endText();
// waterMar.stroke();
// } catch (IOException e) {
// e.printStackTrace();
// }finally {
// waterMar = null;
// gs = null;
// }
// // 加入图片水印
// PdfContentByte waterMar = writer.getDirectContentUnder();
// // 开始设置水印
// waterMar.beginText();
// // 设置水印透明度
// PdfGState gs = new PdfGState();
// // 设置笔触字体不透明度为0.4f
// gs.setStrokeOpacity(0.2f);
// try {
// String CHARACTOR_FONT_CH_BLACK = Thread.currentThread().getContextClassLoader().getResource("").getPath();
// String realReadPath = CHARACTOR_FONT_CH_BLACK + "pdfFont/elogo.png";
// Image image = Image.getInstance(realReadPath);
// // 设置坐标 绝对位置 X Y
// image.setAbsolutePosition(200, 500);
// // 设置旋转弧度
// image.setRotation(30);// 旋转 弧度
// // 设置旋转角度
// image.setRotationDegrees(45);// 旋转 角度
// // 设置等比缩放
// image.scalePercent(90);// 依照比例缩放
// // image.scaleAbsolute(125,80);//自定义大小
// // 设置透明度
// waterMar.setGState(gs);
// // 添加水印图片
// waterMar.addImage(image);
// // 设置透明度
// waterMar.setGState(gs);
// //结束设置
// waterMar.endText();
// waterMar.stroke();
// } catch (IOException e) {
// e.printStackTrace();
// }finally {
// waterMar = null;
// gs = null;
// }
// 标题居中
String title_content = (String) dataMap.get("title_content");
Paragraph title = PDFUtil.getParagraph(
new Chunk(title_content,new Font(PDFUtil.bfChinese,16,Font.BOLD)));
title.setAlignment(Paragraph.ALIGN_CENTER);
document.add(title);
SimpleDateFormat datetimeFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Paragraph now = PDFUtil.getParagraph(
new Chunk(DateUtils.date2Str(DateUtils.getDate(),datetimeFormat) ,new Font(PDFUtil.bfChinese,10,Font.NORMAL)));
now.setAlignment(Paragraph.ALIGN_RIGHT);
document.add(now);
// 表格标题
List<String> titless = (List<String>) dataMap.get("titles");
int len = titless.size();
PdfPTable table = new PdfPTable(len);
table.setSpacingBefore(20);
table.setSpacingAfter(30);
for(int i=0; i<len; i++){ //设置标题
String str = titles.get(i);
table.addCell(PDFUtil.getParagraph(str));
}
// 表格数据
String type = (String) dataMap.get("type");
if ("table".equals(type)){
List<ElectricityPlanDTO> logList = (List<ElectricityPlanDTO>) dataMap.get("list");
table = logPdf(table, logList);
}
document.add(table);
// 关闭
document.close();
} catch (DocumentException e) {
e.printStackTrace();
} finally {
document.close();
}
/*******pdf文件生成结束*********/
try {
fin = new FileInputStream(file);
resp.setCharacterEncoding("utf-8");
resp.setContentType("application/pdf");
String filename = time;
// 设置浏览器以下载的方式处理该文件
if (req.getHeader("User-Agent").toUpperCase().indexOf("MSIE") > 0) {
filename = URLEncoder.encode(filename, "UTF-8");
} else {
filename = new String(filename.getBytes("UTF-8"), "ISO8859-1");
}
//下载使用 删除可用（js2方法）直接在页面显示不下载
resp.addHeader("Content-Disposition", "attachment;filename=" + filename + ".pdf");//这里填想要的文件格式
out = resp.getOutputStream();
byte[] buffer = new byte[512]; // 缓冲区
int bytesToRead = -1;
// 通过循环将读入的Word文件的内容输出到浏览器中
while ((bytesToRead = fin.read(buffer)) != -1) {
out.write(buffer, 0, bytesToRead);
}
} finally {
if (fin != null)
fin.close();
if (out != null)
out.close();
if (file != null)
file.delete(); // 删除临时文件
if (myPath != null)
myPath.delete();
}
return null;
}
工具包PDFUtil
package com.linksaint.defence.electricity.controller;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import com.itextpdf.text.Chunk;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Font;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.BaseFont;
/**
* @ClassName: PDFUtil
* @Description:
* @author yangkunpeng
* @date 2020年1月7日
*
*/
public class PDFUtil {
// 对参数的封装形式比如{name}
public static final String BEGIN = "{";
public static final String END = "}";
// 换行形式{#}
public static final String NEW_LINE = "#";
// 默认的行间距、首行距离等，自己添加
public static final float DEFAULT_LEADING = 20;
public static final float DEFAULT_LINE_INDENT = 30;
// 基本字体和样式
public static BaseFont bfChinese;
public static Font fontChinese;
public static Font UNDER_LINE = null;
static{
try {
// SIMKAI.TTF 默认系统语言，这里没使用第三方语言包
String CHARACTOR_FONT_CH_BLACK = Thread.currentThread().getContextClassLoader().getResource("").getPath();
String realReadPath = CHARACTOR_FONT_CH_BLACK + "pdfFont/simhei.ttf";
bfChinese = BaseFont.createFont(realReadPath, BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
// bfChinese = BaseFont.createFont("D:/home/java/contract/web/fonts/simsun.ttf",BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED);
//bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
fontChinese = new Font(bfChinese, 12, Font.NORMAL);
UNDER_LINE = new Font(bfChinese, 14,Font.UNDERLINE);
} catch (DocumentException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
// 默认样式
public static Paragraph getParagraph(String context){
return getParagraph(context,fontChinese);
}
public static Paragraph getParagraph(Chunk chunk){
return new Paragraph(chunk);
}
// 指定字体样式
public static Paragraph getParagraph(String context,Font font){
return new Paragraph(context,font);
}
// 获得新行,首行缩进,和行间距
public static Paragraph getNewParagraph(String context,float fixedLeading,float firstLineIndent){
Paragraph p = getParagraph(context);
p.setLeading(fixedLeading);
p.setFirstLineIndent(firstLineIndent);
return p;
}
public static Paragraph getParagraph(String content , Font font , float fixedLeading , int alignment){
Paragraph p = getParagraph(content);
p.setFont(font);
p.setLeading(fixedLeading);
p.setAlignment(alignment);
return p;
}
// 默认段落样式
public static Paragraph getDefaultParagraph(String context){
Paragraph p = getParagraph(context);
// 默认行间距
p.setLeading(DEFAULT_LEADING);
// 默认首行空隙
p.setFirstLineIndent(DEFAULT_LINE_INDENT);
return p;
}
// 将参数和字符串内容组合成集合
public static List<Paragraph> createParagraphs(String context ,Map<String,Object> map){
int index = 0;
List<Paragraph> list = new ArrayList<Paragraph>();
Paragraph p = getDefaultParagraph(null);
while((index = context.indexOf(BEGIN)) > -1){
String text = context.substring(0,index);
context = context.substring(index, context.length());
index = context.indexOf(END);
String param = null;
if(index > 0){
param = context.substring(BEGIN.length(),index);
}
p.add(text);
if(!NEW_LINE.equals(param)){
Object value = map.get(param);
if(value != null){
p.add(new Chunk(value.toString(),UNDER_LINE));
}else{
p.add(new Chunk(""));
}
}else{
list.add(p);
p = getDefaultParagraph(null);
p.setSpacingBefore(0);
}
context = context.substring(index+END.length(),context.length());
}
list.add(p);
list.add(getParagraph(context));
return list;
}
}
前端vue调用
axios请求
this.$refs.listLayout.getQueryValues()为查询过滤参数
// itextpdf
exportPDF() {
downFile("sys/electricityPlan/exportPDF",this.$refs.listLayout.getQueryValues() )
},
/**
* 下载文件
* @param url
* @param parameter
* @returns {*}
export function downFile (url, parameter) {
return axios({
url: url,
params: parameter,
method: 'get',
responseType: 'blob'
}).then(response=>{
if(response != null){
const disposition = response.headers["content-disposition"].split(";");
const fileName = decodeURI(
disposition[disposition.length - 1].split("=")[1]
).replace(/^\"|\"$/g, "");
const blob = new Blob([response.data])
if (window.navigator.msSaveOrOpenBlob) {
// 兼容IE10
navigator.msSaveBlob(blob,fileName);
} else {
var a = document.createElement("a");
a.href = URL.createObjectURL(blob);;
a.download = fileName;
a.dispatchEvent(new MouseEvent('click', {bubbles: true, cancelable: true, view: window}));
URL.revokeObjectURL(a.href);
}
}
})
}
*/