集成freemarker+flying-saucer-pdf+itext，通过html模板生成PDF
折腾了很久，flying-saucer-pdf终于完美解决了(中文问题，换行问题，页眉页脚，水印),html+css控制pdf样式
一共集成到两个类中：Generator & PDFBuilder，具体看详细的代码注释，相关文件路径自行修改
转黄方法入口：Generator.pdfGeneratePlus
1.引入相关java
org.xhtmlrenderer
flying-saucer-pdf-itext5
9.1.18
com.itextpdf
itext-asian
5.2.0
com.itextpdf.tool
xmlworker
5.5.11
org.freemarker
freemarker
2.3.28
2.上上面提到两个类的实现代码
package com.xxxxx.xxxx.file.config;
import java.io.BufferedWriter;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.StringWriter;
import java.nio.charset.Charset;
import java.util.Map;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.springframework.util.StringUtils;
import org.xhtmlrenderer.pdf.ITextRenderer;
import com.itextpdf.text.Document;
import com.itextpdf.text.Font;
import com.itextpdf.text.Image;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.tool.xml.Pipeline;
import com.itextpdf.tool.xml.XMLWorker;
import com.itextpdf.tool.xml.XMLWorkerFontProvider;
import com.itextpdf.tool.xml.XMLWorkerHelper;
import com.itextpdf.tool.xml.html.CssAppliersImpl;
import com.itextpdf.tool.xml.html.Tags;
import com.itextpdf..FileRetrieve;
import com.itextpdf..ReadingProcessor;
import com.itextpdf.tool.xml.parser.XMLParser;
import com.itextpdf.tool.xml.pipeline.css.CSSResolver;
import com.itextpdf.tool.xml.pipeline.css.CssResolverPipeline;
import com.itextpdf.tool.xml.pipeline.end.PdfWriterPipeline;
import com.itextpdf.tool.xml.pipeline.html.AbstractImageProvider;
import com.itextpdf.tool.xml.pipeline.html.HtmlPipeline;
import com.itextpdf.tool.xml.pipeline.html.HtmlPipelineContext;
import com.itextpdf.tool.xml.pipeline.html.ImageProvider;
import freemarker.template.Configuration;
import freemarker.template.Template;
import lombok.extern.slf4j.Slf4j;
/**
*
* @描述：html/pdf生成器
*
* @作者：zhongjy
*
* @时间：7月15日 下午12:31:25
*/
@Slf4j
public class Generator {
/**
*
* @描述：生成html
*
* @返回：String
*
* @作者：zhongjy
*
* @时间：7月15日 下午12:33:58
*/
public static String htmlGenerate(String template, Map variables)
throws Exception {
Configuration config = FreemarkerConfiguration.getConfiguation();
Template tp = config.getTemplate(template);
StringWriter stringWriter = new StringWriter();
BufferedWriter writer = new BufferedWriter(stringWriter);
tp.process(variables, writer);
String htmlStr = stringWriter.toString();
writer.flush();
writer.close();
return htmlStr;
}
public static void pdfGenerate(String htmlStr, OutputStream out) throws Exception {
DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
org.w3c.dom.Document doc = builder.parse(new ByteArrayInputStream(htmlStr.getBytes()));
ITextRenderer renderer = new ITextRenderer();
renderer.setDocument(doc, null);
renderer.layout();
renderer.createPDF(out);
out.close();
}
/**
*
* @描述：生成pdf
*
* @返回：void
*
* @作者：zhongjy
*
* @时间：7月16日 上午10:59:11
*/
public static void pdfGeneratePlus(String htmlTemplate, Map dataMap,
String targetPdf, Rectangle pageSize, String header, boolean isFooter, File watermark)
throws Exception {
/**
* 根据freemarker模板生成html
*/
String htmlStr = htmlGenerate(htmlTemplate, dataMap);
final String charsetName = "UTF-8";
Document document = new Document(pageSize);
OutputStream out = new FileOutputStream(targetPdf);
/**
* 设置边距
*/
// document.setMargins(30, 30, 30, 30);
PdfWriter writer = PdfWriter.getInstance(document, out);
/**
* 添加页码
*/
PDFBuilder builder = new PDFBuilder(header, 10, pageSize, watermark, isFooter);
writer.setPageEvent(builder);
document.open();
/**
* html内容解析
*/
HtmlPipelineContext htmlContext =
new HtmlPipelineContext(new CssAppliersImpl(new XMLWorkerFontProvider() {
@Override
public Font getFont(String fontname, String encoding, float size, final int style) {
if (fontname == null) {
/**
* 操作系统需要有该字体, 没有则需要安装; 当然也可以将字体放到项目中， 再从项目中读取
*/
fontname = "STSong-Light";
encoding = "UniGB-UCS2-H";
}
Font font = null;
try {
font = new Font(BaseFont.createFont(fontname, encoding, BaseFont.NOT_EMBEDDED), size,
style);
} catch (Exception e) {
log.error("", e);
}
return font;
}
})) {
@Override
public HtmlPipelineContext clone() throws CloneNotSupportedException {
HtmlPipelineContext context = super.clone();
ImageProvider imageProvider = this.getImageProvider();
context.setImageProvider(imageProvider);
return context;
}
};
/**
* 图片解析
*/
htmlContext.setImageProvider(new AbstractImageProvider() {
String rootPath = "C:\\Users\\Administrator\\Desktop\\刘亦菲\\";
@Override
public String getImageRootPath() {
return rootPath;
}
@Override
public Image retrieve(String src) {
if (StringUtils.isEmpty(src)) {
return null;
}
try {
Image image = Image.getInstance(new File(rootPath, src).toURI().toString());
/**
* 图片显示位置
*/
image.setAbsolutePosition(400, 400);
if (image != null) {
store(src, image);
return image;
}
} catch (Exception e) {
log.error("", e);
}
return super.retrieve(src);
}
});
htmlContext.setAcceptUnknown(true).autoBookmark(true)
.setTagFactory(Tags.getHtmlTagProcessorFactory());
/**
* css解析
*/
CSSResolver cssResolver = XMLWorkerHelper.getInstance().getDefaultCssResolver(true);
cssResolver.setFileRetrieve(new FileRetrieve() {
@Override
public void processFromStream(InputStream in, ReadingProcessor processor) throws IOException {
try (InputStreamReader reader = new InputStreamReader(in, charsetName)) {
int i = -1;
while (-1 != (i = reader.read())) {
processor.process(i);
}
} catch (Throwable e) {
}
}
/**
* 解析href
*/
@Override
public void processFromHref(String href, ReadingProcessor processor) throws IOException {
InputStream is = new ByteArrayInputStream(href.getBytes());
try {
InputStreamReader reader = new InputStreamReader(is, charsetName);
int i = -1;
while (-1 != (i = reader.read())) {
processor.process(i);
}
} catch (Exception e) {
log.error("", e);
}
}
});
HtmlPipeline htmlPipeline =
new HtmlPipeline(htmlContext, new PdfWriterPipeline(document, writer));
Pipeline> pipeline = new CssResolverPipeline(cssResolver, htmlPipeline);
XMLWorker worker = null;
worker = new XMLWorker(pipeline, true);
XMLParser parser = new XMLParser(true, worker, Charset.forName(charsetName));
try (InputStream inputStream = new ByteArrayInputStream(htmlStr.getBytes())) {
parser.parse(inputStream, Charset.forName(charsetName));
}
document.close();
}
}
package com.xxxxx.xxxx.file.config;
import java.io.File;
import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Document;
import com.itextpdf.text.Element;
import com.itextpdf.text.Font;
import com.itextpdf.text.Image;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.ColumnText;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfPageEventHelper;
import com.itextpdf.text.pdf.PdfTemplate;
import com.itextpdf.text.pdf.PdfWriter;
import com.xxxxx.xxxx.util.BaseUtil;
import lombok.extern.slf4j.Slf4j;
/**
*
* @描述：PDF生成水印和页眉页脚(页码).
*
* @作者：zhongjy
*
* @时间：7月15日 下午8:22:24
*/
@Slf4j
public class PDFBuilder extends PdfPageEventHelper {
/**
* 页眉
*/
public String header = "";
/**
* 文档字体大小，页脚页眉最好和文本大小一致
*/
public int presentFontSize = 10;
/**
* 文档页面大小，最好前面传入，否则默认为A4纸张
*/
public Rectangle pageSize = PageSize.A4;
/**
* 模板
*/
public PdfTemplate total;
/**
* 基础字体对象
*/
public BaseFont bf = null;
/**
* 利用基础字体生成的字体对象，一般用于生成中文文字
*/
public Font fontDetail = null;
/**
* 水印文件
*/
private File watermark = null;
/**
* 是否显示页脚页码信息
*/
private boolean isHeaderFooter = false;
public PDFBuilder() {
}
/**
*
* @param header
* @param presentFontSize
* @param pageSize
* @param watermark
*/
public PDFBuilder(String header, int presentFontSize, Rectangle pageSize, File watermark,
boolean isHeaderFooter) {
this.header = header;
this.presentFontSize = presentFontSize;
this.pageSize = pageSize;
this.watermark = watermark;
this.isHeaderFooter = isHeaderFooter;
}
public void setHeader(String header) {
this.header = header;
}
public void setPresentFontSize(int presentFontSize) {
this.presentFontSize = presentFontSize;
}
/**
* 文档打开时创建模板
*/
public void onOpenDocument(PdfWriter writer, Document document) {
/**
* 共 页 的矩形的长宽高
*/
total = writer.getDirectContent().createTemplate(50, 50);
}
/**
* 关闭每页的时候添加页眉页脚和水印
*/
public void onEndPage(PdfWriter writer, Document document) {
/**
* 添加分页
*/
if (isHeaderFooter) {
this.addPage(writer, document);
}
/**
* 添加水印
*/
if (watermark != null) {
this.addWatermark(writer);
}
}
/**
*
* @描述：分页
*
* @返回：void
*
* @作者：zhongjy
*
* @时间：7月15日 下午9:09:39
*/
public void addPage(PdfWriter writer, Document document) {
try {
if (bf == null) {
bf = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", false);
}
if (fontDetail == null) {
/**
* 数据体字体
*/
fontDetail = new Font(bf, presentFontSize, Font.NORMAL);
fontDetail.setColor(BaseColor.GRAY);
}
} catch (Exception e) {
log.error("", e);
}
/**
* 写入页眉
*/
ColumnText.showTextAligned(writer.getDirectContent(), Element.ALIGN_LEFT,
new Phrase(header, fontDetail), document.left(), document.top() + 20, 0);
/**
* 写入页脚(分页信息)
*/
int pageS = writer.getPageNumber();
String foot1 = "第 " + pageS + " 页 / 共";
Phrase footer = new Phrase(foot1, fontDetail);
/**
* 计算前半部分的foot1的长度，后面好定位最后一部分的'Y页'这俩字的x轴坐标，字体长度也要计算进去 = len
*/
float len = bf.getWidthPoint(foot1, presentFontSize);
/**
* 拿到当前的PdfContentByte
*/
PdfContentByte cb = writer.getDirectContent();
/**
* 写入页脚1，x轴就是(右margin+左margin + right() -left()- len)/2.0F 再给偏移20F适合人类视觉感受，否则肉眼看上去就太偏左了
* y轴就是底边界-20,否则就贴边重叠到数据体里了就不是页脚了；注意Y轴是从下往上累加的，最上方的Top值是大于Bottom好几百开外的
*/
ColumnText.showTextAligned(cb, Element.ALIGN_CENTER, footer,
(document.rightMargin() + document.right() + document.leftMargin() - document.left() - len)
/ 2.0F + 20F,
document.bottom() - 25, 0);
/**
* 写入页脚2的模板(就是页脚的Y页这俩字)添加到文档中，计算模板的和Y轴,X=(右边界-左边界 - 前半部分的len值)/2.0F + len ， y 轴和之前的保持一致，底边界-20
*/
cb.addTemplate(total,
(document.rightMargin() + document.right() + document.leftMargin() - document.left()) / 2.0F
+ 20F,
document.bottom() - 25);
}
/**
*
* @描述：添加水印
*
* @返回：void
*
* @作者：zhongjy
*
* @时间：7月15日 下午9:12:40
*/
public void addWatermark(PdfWriter writer) {
/**
* 水印图片
*/
Image image = null;
try {
image = Image.getInstance(BaseUtil.file2byte(watermark));
PdfContentByte content = writer.getDirectContentUnder();
content.beginText();
/**
* 开始写入水印
*/
image.setAbsolutePosition(300, 300);
content.addImage(image);
content.endText();
} catch (Exception e) {
log.error("", e);
}
}
/**
* 关闭文档时，替换模板，完成整个页眉页脚组件
*/
public void onCloseDocument(PdfWriter writer, Document document) {
if (isHeaderFooter) {
/**
* 最后一步了，就是关闭文档的时候，将模板替换成实际的 Y 值,至此，page x of y 制作完毕，完美兼容各种文档size
*/
total.beginText();
/**
* 生成的模版的字体、颜色
*/
total.setFontAndSize(bf, presentFontSize);
total.setColorFill(BaseColor.GRAY);
String foot2 = " " + (writer.getPageNumber()) + " 页";
/**
* 模版显示的内容
*/
total.showText(foot2);
total.endText();
total.closePath();
}
}
}
最后附上HTML模板和调用方法
table {
width: 100%;
border-collapse: collapse;
border-style: solid;
border-width: 0.5px;
border-color: #000000;
}
table tr td {
border-width: 0.5px;
border-style: solid;
border-color: #000000;
padding: 9px 9px;
}
table thead tr th {
border-width: 0.5px;
border-style: solid;
border-color: #000000;
text-align: center;
padding: 9px 9px;
}
${title}
#list>
${d}#list>
#list>
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.itextpdf.text.PageSize;
import com.xxxxx.xxxx.file.config.Generator;
public class Test4 {
public static void main(String[] args) throws Exception {
Map mp = new HashMap();
try {
String outputFile = "C:\\Users\\Administrator\\Desktop\\test123\\abc1.pdf";// 生成后的路径
Map dataMap = new HashMap();
List titleList = Arrays.asList("属性1", "属性2", "属性3", "属性4", "属性5", "属性6", "属性7");
dataMap.put("titleList", titleList);
List> dataList = new ArrayList>();
for (int i = 0; i < 100; i++) {
dataList
.add(Arrays.asList("数据1_" + i, "数据2_" + i, "数据3_数据3_数据3_数据3_数据3_数据3_数据3_数据3_数据3_" + i,
"数据4_" + i, "数据5_" + i, "数据6_" + i, "数据7_" + i));
}
dataMap.put("dataList", dataList);
//File water = new File("C:\\Users\\zhongjy\\Desktop\\test123\\water.png");
Generator.pdfGeneratePlus("laytable/normal-teble.html", dataMap, outputFile, PageSize.A4, "", true, null);
mp.put("code", "200");
mp.put("url", outputFile);
} catch (Exception ex) {
ex.printStackTrace();
mp.put("code", "500");
}
}
}
运行结果图如下：
补充上面用到的方法
/**
*
* @描述：文件转byte[]
*
* @返回：byte[]
*
* @作者：zhongjy
*
* @时间：7月15日 下午10:19:18
*/
public static byte[] file2byte(File file) {
FileInputStream fileInputStream = null;
byte[] bFile = null;
try {
bFile = new byte[(int) file.length()];
fileInputStream = new FileInputStream(file);
fileInputStream.read(bFile);
} catch (Exception e) {
logger.error("", e);
} finally {
if (fileInputStream != null) {
try {
fileInputStream.close();
} catch (Exception e) {
logger.error("", e);
}
}
}
return bFile;
}
/**
*
* @描述：html报表模板配置
*
* @作者：zhongjy
*
* @时间：7月15日 下午12:25:59
*/
public class FreemarkerConfiguration {
private static Configuration config = null;
static {
config = new Configuration(Configuration.DEFAULT_INCOMPATIBLE_IMPROVEMENTS);
config.setClassForTemplateLoading(FreemarkerConfiguration.class, "/report/");
}
public static Configuration getConfiguation() {
return config;
}
}
说明：/report/是springboot项目下freemarker的模板路径
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版权声明：本文为CSDN博主「zhong_jianyu」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
原文链接：/zhong_jianyu/java/article/details/96147949
html pdf支持css%写法吗 flying-saucer-pdf终于完美解决了（中文问题 换行问题 分页 页眉页脚 水印） html+css控制pdf样式...
