PdfUtil.java
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package com.skua.modules.erp.util;
import com.itextpdf.html2pdf.ConverterProperties;
import com.itextpdf.html2pdf.HtmlConverter;
import com.itextpdf.kernel.font.PdfFont;
import com.itextpdf.kernel.font.PdfFontFactory;
import com.itextpdf.kernel.geom.PageSize;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.layout.font.FontProvider;
import org.apache.velocity.Template;
import org.apache.velocity.app.Velocity;
import org.apache.velocity.context.Context;
import org.apache.velocity.runtime.RuntimeConstants;
import org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader;
import java.io.OutputStream;
import java.io.StringWriter;
import java.nio.charset.StandardCharsets;
/**
* PDF工具
*
* @author ppp
* @date 2022/8/5
*/
public class PdfUtil {
static {
// Velocity初始化
Velocity.setProperty(RuntimeConstants.OUTPUT_ENCODING, StandardCharsets.UTF_8);
Velocity.setProperty(RuntimeConstants.INPUT_ENCODING, StandardCharsets.UTF_8);
Velocity.setProperty(RuntimeConstants.RESOURCE_LOADER, "classpath");
Velocity.setProperty("classpath.resource.loader.class", ClasspathResourceLoader.class.getName());
Velocity.init();
}
/**
* 据模板生成pfd格式文件
*
* @param context 上下文对象
* @param template pdf模板
* @param outputStream 生成ofd文件输出流
*/
public static void pdfFile(Context context, String template, OutputStream outputStream) {
try (PdfWriter pdfWriter = new PdfWriter(outputStream)) {
PdfDocument pdfDocument = new PdfDocument(pdfWriter);
pdfDocument.setDefaultPageSize(PageSize.A4);
ConverterProperties properties = new ConverterProperties();
FontProvider fontProvider = new FontProvider();
// 字体设置，解决中文不显示问题
PdfFont sysFont = PdfFontFactory.createFont("STSongStd-Light", "UniGB-UCS2-H");
fontProvider.addFont(sysFont.getFontProgram(), "UniGB-UCS2-H");
properties.setFontProvider(fontProvider);
Template pfdTemplate = Velocity.getTemplate(template, "UTF-8");
StringWriter writer = new StringWriter();
pfdTemplate.merge(context, writer);
//System.out.println("***************writer.toString()***************************");
System.out.println(writer.toString());
HtmlConverter.convertToPdf(writer.toString(), pdfDocument, properties);
pdfDocument.close();
} catch (Exception e) {
throw new RuntimeException("PFD文件生成失败", e);
}
}
}