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Contents
  1. 1. JLR 概述
  2. 2. JLR 范例
  3. 3. 参考

JLR（Java LaTeX Report）是基于MiKTeX和Velocity模板引擎构建的可生成LaTeX的一个Java包，对Tutorial的示例进行试验和稍加改动。

JLR 概述

由nixo-soft开发的JLR（Java LaTex Report）的Java包，可应用于生成LaTeX。

从这段官方介绍可以看出，免费没开源，在Maven上也没有，基于MiKTeX和Velocity模板引擎构建。

Version: 2.1 (Last modified: 20 Aug 2013 19:10:19)
Filesize: 1.25 MB (compressed)
Features:

  • Requirements: Java Runtime Environment (JRE) 6 Update 20 / Installed or portable LaTeX Distribution(e.g. MiKTeX or MiKTeX Portable)
  • Simple conversion of Java to PDF (Java2PDF)
  • Use of the very stable, proven and free LaTeX software package for generating PDF files
  • Uses the Apache Velocity Template Engine
  • Lightweight, small and powerful
  • It is a free library (Freeware)

Hint: The Open Source PDF-Renderer is suitable for displaying PDFs within a Java application
Tutorial: http://www.nixo-soft.de/tutorials/jlr/JLRTutorial.html

JLR 范例

一个由Tutorial稍加改动的例子，文档结构图如下。要引入jlr.jar，准备好LaTeX模板文件invoiceTemplate.tex和invoice的CTAN包（下载）

2015-06-30_183023.png

在foreach处有改动的 invoiceTemplate.tex

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\documentclass{letter}
\usepackage{invoice}
\address{Josh Parker \\
         5650 Webster Ave \\
         West Palm Beach, Florida 33405 \\
         JParker@mail.com}
\date{31-May-2010}

\begin{document}
\begin{letter}{$CustomerName \\
               $CustomerStreet \\
               $CustomerZip}
\opening{Invoice no. $Number}
Dear customer,
...
\begin{invoice}{Euro}{0}
\ProjectTitle{Example Project}

#foreach( $s in $services )
    \Fee{$s.getName()} {$s.getUnit()} {$s.getCount()}
#end

\end{invoice}

\closing{Best regards}
\end{letter}
\end{document}

如果用的是MikTeX portable，得改用JLRGenerator，具体见Tutorial，这里的是对应JLRConverter的 App.java

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public class App {

	public static void main(String[] args) {
		File workingDirectory = new File(System.getProperty("user.dir")
				+ File.separator + "resources");// 工作目录
		File template = new File(workingDirectory.getAbsolutePath()
				+ File.separator + "invoiceTemplate.tex");// 模板路径
		File outputDir = new File(workingDirectory.getAbsolutePath()
				+ File.separator + "invoice");// 输出路径
		if (!outputDir.isDirectory()) {
			outputDir.mkdir();// 确保输出路径存在
		}
		File invoice1 = new File(outputDir.getAbsolutePath() + File.separator
				+ "invoice1.tex");// 账单文件

		try {

			// 第一步
			JLRConverter converter = new JLRConverter(workingDirectory);

			// 第二步
			converter.replace("Number", "1");
			converter.replace("CustomerName", "Ivan Pfeiffer");
			converter.replace("CustomerStreet", "Schwarzer Weg 4");
			converter.replace("CustomerZip", "13505 Berlin");

			// 替换掉Tutorial中的 ArrayList<ArrayList<String>> services = new
			// ArrayList<ArrayList<String>>();………………

			List<Service> services = new ArrayList<>();
			services.add(new Service("Apple", 100.2, 12.33));
			services.add(new Service("Orange", 20.44, 0.99));
			services.add(new Service("Banana", 0.23, 1.1));

			converter.replace("services", services);

			// 第三步
			if (!converter.parse(template, invoice1)) {
				System.out.println(converter.getErrorMessage());
			}

			JLROpener.open(invoice1);// 打开账单文件
			// JLROpener.print(invoice1);//然而并不管用

		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}

增添的 Service.java

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public class Service {
	private String name;
	private double unit;//单价
	private double count;//数量
	public Service(){
	}
	public Service(String name,double unit,double count){
		this.name=name;
		this.unit=unit;
		this.count=count;
	}
	public String getName() {
		return name;
	}
	public double getUnit() {
		return unit;
	}
	public double getCount() {
		return count;
	}
}

程序运行后，得到替换后的LaTeX文件 invoice1.tex

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\documentclass{letter}
\usepackage{invoice}
\address{Josh Parker \\
         5650 Webster Ave \\
         West Palm Beach, Florida 33405 \\
         JParker@mail.com}
\date{31-May-2010}

\begin{document}
\begin{letter}{Ivan Pfeiffer \\
               Schwarzer Weg 4 \\
               13505 Berlin}
\opening{Invoice no. 1}
Dear customer,
...
\begin{invoice}{Euro}{0}
\ProjectTitle{Example Project}

    \Fee{Apple} {100.2} {12.33}
    \Fee{Orange} {20.44} {0.99}
    \Fee{Banana} {0.23} {1.1}

\end{invoice}

\closing{Best regards}
\end{letter}
\end{document}

相对应可生成的pdf文件

2015-06-30_184011.png

参考

Contents
  1. 1. JLR 概述
  2. 2. JLR 范例
  3. 3. 参考