A - 解释
你应该使用阿帕奇FOP框架生成pdf输出。只需您提供数据xml格式化并渲染页面xsl-fo文件并指定参数，例如margin, 页面布局在这个xsl-fo file.
我将提供一个简单的演示，我使用maven构建工具来收集所需的 jar 文件。请注意，在页面末尾，有一个嵌入 pdf 中的 svg 图形。我还想演示您可以在 pdf 中嵌入 svg 图形。
B - 示例 XML 输入数据
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="application/xml"?>
<users-data>
<header-section>
<data-type id="019">User Bill Data</data-type>
<process-date>Thursday December 9 2016 00:04:29</process-date>
</header-section>
<user-bill-data>
<full-name>John Doe</full-name>
<postal-code>34239</postal-code>
<national-id>123AD329248</national-id>
<price>17.84</price>
</user-bill-data>
<user-bill-data>
<full-name>Michael Doe</full-name>
<postal-code>54823</postal-code>
<national-id>942KFDSCW322</national-id>
<price>34.50</price>
</user-bill-data>
<user-bill-data>
<full-name>Jane Brown</full-name>
<postal-code>66742</postal-code>
<national-id>ABDD324KKD8</national-id>
<price>69.36</price>
</user-bill-data>
</users-data>
C - XSL-FO 模板
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="http://www.w3.org/1999/XSL/Format" version="1.0">
<xsl:output encoding="UTF-8" indent="yes" method="xml" standalone="no" omit-xml-declaration="no"/>
<xsl:template match="users-data">
<fo:root language="EN">
<fo:layout-master-set>
<fo:simple-page-master master-name="A4-portrail" page-height="297mm" page-width="210mm" margin-top="5mm" margin-bottom="5mm" margin-left="5mm" margin-right="5mm">
<fo:region-body margin-top="25mm" margin-bottom="20mm"/>
<fo:region-before region-name="xsl-region-before" extent="25mm" display-align="before" precedence="true"/>
</fo:simple-page-master>
</fo:layout-master-set>
<fo:page-sequence master-reference="A4-portrail">
<fo:static-content flow-name="xsl-region-before">
<fo:table table-layout="fixed" width="100%" font-size="10pt" border-color="black" border-width="0.4mm" border-style="solid">
<fo:table-column column-width="proportional-column-width(20)"/>
<fo:table-column column-width="proportional-column-width(45)"/>
<fo:table-column column-width="proportional-column-width(20)"/>
<fo:table-body>
<fo:table-row>
<fo:table-cell text-align="left" display-align="center" padding-left="2mm">
<fo:block>
Bill Id:<xsl:value-of select="header-section/data-type/@id"/>
, Date: <xsl:value-of select="header-section/process-date"/>
</fo:block>
</fo:table-cell>
<fo:table-cell text-align="center" display-align="center">
<fo:block font-size="150%">
<fo:basic-link external-destination="http://www.example.com">XXX COMPANY</fo:basic-link>
</fo:block>
<fo:block space-before="3mm"/>
</fo:table-cell>
<fo:table-cell text-align="right" display-align="center" padding-right="2mm">
<fo:block>
<xsl:value-of select="data-type"/>
</fo:block>
<fo:block display-align="before" space-before="6mm">Page <fo:page-number/> of <fo:page-number-citation ref-id="end-of-document"/>
</fo:block>
</fo:table-cell>
</fo:table-row>
</fo:table-body>
</fo:table>
</fo:static-content>
<fo:flow flow-name="xsl-region-body" border-collapse="collapse" reference-orientation="0">
<fo:block>MONTHLY BILL REPORT</fo:block>
<fo:table table-layout="fixed" width="100%" font-size="10pt" border-color="black" border-width="0.35mm" border-style="solid" text-align="center" display-align="center" space-after="5mm">
<fo:table-column column-width="proportional-column-width(20)"/>
<fo:table-column column-width="proportional-column-width(30)"/>
<fo:table-column column-width="proportional-column-width(25)"/>
<fo:table-column column-width="proportional-column-width(50)"/>
<fo:table-body font-size="95%">
<fo:table-row height="8mm">
<fo:table-cell>
<fo:block>Full Name</fo:block>
</fo:table-cell>
<fo:table-cell>
<fo:block>Postal Code</fo:block>
</fo:table-cell>
<fo:table-cell>
<fo:block>National ID</fo:block>
</fo:table-cell>
<fo:table-cell>
<fo:block>Payment</fo:block>
</fo:table-cell>
</fo:table-row>
<xsl:for-each select="user-bill-data">
<fo:table-row>
<fo:table-cell>
<fo:block>
<xsl:value-of select="full-name"/>
</fo:block>
</fo:table-cell>
<fo:table-cell>
<fo:block>
<xsl:value-of select="postal-code"/>
</fo:block>
</fo:table-cell>
<fo:table-cell>
<fo:block>
<xsl:value-of select="national-id"/>
</fo:block>
</fo:table-cell>
<fo:table-cell>
<fo:block>
<xsl:value-of select="price"/>
</fo:block>
</fo:table-cell>
</fo:table-row>
</xsl:for-each>
</fo:table-body>
</fo:table>
<fo:block id="end-of-document">
<fo:instream-foreign-object>
<svg width="200mm" height="150mm" version="1.1" xmlns="http://www.w3.org/2000/svg">
<path d="M153 334
C153 334 151 334 151 334
C151 339 153 344 156 344
C164 344 171 339 171 334
C171 322 164 314 156 314
C142 314 131 322 131 334
C131 350 142 364 156 364
C175 364 191 350 191 334
C191 311 175 294 156 294
C131 294 111 311 111 334
C111 361 131 384 156 384
C186 384 211 361 211 334
C211 300 186 274 156 274" style="fill:yellow;stroke:red;stroke-width:2"/>
</svg>
</fo:instream-foreign-object>
</fo:block>
</fo:flow>
</fo:page-sequence>
</fo:root>
</xsl:template>
</xsl:stylesheet>
D - 项目目录结构
E - Pom 文件
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.levent.fopdemo</groupId>
<artifactId>apache-fop-demo</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
<name>apache-fop-demo</name>
<url>http://maven.apache.org</url>
<properties>
<fop.version>2.1</fop.version>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.apache.xmlgraphics/fop -->
<dependency>
<groupId>org.apache.xmlgraphics</groupId>
<artifactId>fop</artifactId>
<version>${fop.version}</version>
</dependency>
</dependencies>
<build>
<finalName>Apache Fop Demo</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
F - 演示代码：PdfGenerationDemo.java
package com.levent.fopdemo;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import javax.xml.transform.Result;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.sax.SAXResult;
import javax.xml.transform.stream.StreamSource;
import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.apps.Fop;
import org.apache.fop.apps.FopFactory;
import org.apache.fop.apps.MimeConstants;
public class PdfGenerationDemo
{
public static final String RESOURCES_DIR;
public static final String OUTPUT_DIR;
static {
RESOURCES_DIR = "src//main//resources//";
OUTPUT_DIR = "src//main//resources//output//";
}
public static void main( String[] args )
{
try {
convertToPDF();
} catch (FOPException | IOException | TransformerException e) {
e.printStackTrace();
}
}
public static void convertToPDF() throws IOException, FOPException, TransformerException {
// the XSL FO file
File xsltFile = new File(RESOURCES_DIR + "//template.xsl");
// the XML file which provides the input
StreamSource xmlSource = new StreamSource(new File(RESOURCES_DIR + "//data.xml"));
// create an instance of fop factory
FopFactory fopFactory = FopFactory.newInstance(new File(".").toURI());
// a user agent is needed for transformation
FOUserAgent foUserAgent = fopFactory.newFOUserAgent();
// Setup output
OutputStream out;
out = new java.io.FileOutputStream(OUTPUT_DIR + "//output.pdf");
try {
// Construct fop with desired output format
Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, foUserAgent, out);
// Setup XSLT
TransformerFactory factory = TransformerFactory.newInstance();
Transformer transformer = factory.newTransformer(new StreamSource(xsltFile));
// Resulting SAX events (the generated FO) must be piped through to
// FOP
Result res = new SAXResult(fop.getDefaultHandler());
// Start XSLT transformation and FOP processing
// That's where the XML is first transformed to XSL-FO and then
// PDF is created
transformer.transform(xmlSource, res);
} finally {
out.close();
}
}
}
G - 示例输出：output.pdf
