Java：iText生成pdf文档

<!-- pdf:start -->
<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>itextpdf</artifactId>
    <version>5.5.11</version>
</dependency>
<dependency>
    <groupId>com.itextpdf.tool</groupId>
    <artifactId>xmlworker</artifactId>
    <version>5.5.11</version>
</dependency>
<!-- 支持中文 -->
<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>itext-asian</artifactId>
    <version>5.2.0</version>
</dependency>
<!-- 支持css样式渲染 -->
<dependency>
    <groupId>org.xhtmlrenderer</groupId>
    <artifactId>flying-saucer-pdf-itext5</artifactId>
    <version>9.1.16</version>
</dependency>
<!-- 转换html为标准xhtml包 -->
<dependency>
    <groupId>net.sf.jtidy</groupId>
    <artifactId>jtidy</artifactId>
    <version>r938</version>
</dependency>
<!-- pdf:end -->

package com.pengshiyu;
import com.itextpdf.text.Document;
import com.itextpdf.text.Font;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfWriter;
import java.io.FileOutputStream;
/**
 * Hello world!
 */
public class PdfDemo {
    public static void main(String[] args) throws Exception {
  // 新建文档
        Document document = new Document(PageSize.A4);
        // 如果输出中文，需要设置中文字体
        BaseFont chineseFont = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
        Font font = new Font(chineseFont, 12, Font.NORMAL);
        PdfWriter.getInstance(document, new FileOutputStream("hello.pdf"));
        // 打开文档
        document.open();
        // 写入内容
        Paragraph paragraph = new Paragraph("hello world 你好世界", font);
        document.add(paragraph);
        // 关闭文档
        document.close();
    }
}