使用freemarker和itext把html转pdf
1.把html转pdf，首先必须要解决中文显示问题，CSS样式问题以及可能的JS问题，先上例子，自己去体会。
2.先去下载simsun.ttc字体；
2.demo.html
<!DOCTYPE html>
<html >
<head>
<meta charset="UTF8"/>
<title>Title</title>
<style>
.color {
color: green;
}
.pos {
position: absolute;
left: 200px;
top: 5px;
width: 200px;
fontsize: 10px;
}
</style>
</head>
<body >
<img src="logo.png" width="600px" />
<div class="color pos">
hello,${name};
</div>
</body>
</html>3.java实现转换代码
package com.ra.truck.createpdf;
import com.itextpdf.text.pdf.BaseFont;
import com.lowagie.text.*;
import com.lowagie.text.Font;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfWriter;
import freemarker.template.Configuration;
import freemarker.template.Template;
import org.xhtmlrenderer.pdf.ITextFontResolver;
import org.xhtmlrenderer.pdf.ITextRenderer;
import java.awt.*;
import java.io.*;
import java.util.HashMap;
import java.util.Map;
/**
* @Auther: lanhao
* @Date: 2018/8/7 11:46
* @Description:
*/
public class JavaToPdfHtmlFreeMarkerFS {
private static final String DEST ="../HelloWorld_CN_HTML_FREEMARKER_FS_index.pdf";
private static final String HTML = "demo.html";
private static final String FONT = "simsun.ttc";private static final String LOGO_PATH ="file:/"+PathUtil.getCurrentPath()+"/"+"demo448"+".png";
private static Configuration freemarkerCfg=null;
static {
freemarkerCfg =new Configuration();
//freemarker的模板目录
try {
freemarkerCfg.setDirectoryForTemplateLoading(new File(PathUtil.getCurrentPath()));
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args){
String os=System.getProperty("os.name");
System.out.println(os);
Map<String,Object> data = new HashMap<>();
data.put("name","lan浩");
String content =freeMarkerRender(data,HTML);
createPdf(content,DEST);
}
/**
* freemarker渲染html
*/
public static String freeMarkerRender(Map<String, Object> data,String htmlTmp) {
Writer out = new StringWriter();
try {
// 获取模板,并设置编码方式
Template template = freemarkerCfg.getTemplate(htmlTmp);
template.setEncoding("UTF8");
// 合并数据模型与模板
template.process(data, out); //将合并后的数据和模板写入到流中，这里使用的字符流
out.flush();
return out.toString();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
out.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
return null;
}
private static void createPdf(String content,String dest) {
try {
ITextRenderer render = new ITextRenderer();
//解决中文不显式问题
ITextFontResolver fontResolver = render.getFontResolver();
fontResolver.addFont(FONT,BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED);
// 解析html生成pdf
render.setDocumentFromString(content);
//解决图片相对路径的问题
render.getSharedContext().setBaseURL(LOGO_PATH);
render.layout();
render.createPDF(new FileOutputStream(dest));
}catch (Exception e) {
e.printStackTrace();
}
}
}注：引用的文件全部放在项目的resource根目录下
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