iText 引入importRtfDocument错误

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iText 引入importRtfDocument错误0

Document document = new Document(PageSize.A4);
RtfWriter2 rtf = RtfWriter2.getInstance(document, new FileOutputStream("path"));

document.open();
BaseFont bfChinese = BaseFont.createFont("STSongStd-Light",
"UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
rtf.importRtfDocument(new FileInputStream("oldPath"));

document.add(new Paragraph("Hello World"));

document.close();
请问这么引入rtf文件为什么会报如下错误：
java.lang.NullPointerException
at com.lowagie.text.rtf.parser.destinations.RtfDestinationFontTable.importSystemFonts(Unknown Source)
at com.lowagie.text.rtf.parser.destinations.RtfDestinationFontTable.init(Unknown Source)
at com.lowagie.text.rtf.parser.destinations.RtfDestinationFontTable.setParser(Unknown Source)
at com.lowagie.text.rtf.parser.destinations.RtfDestinationMgr.addDestination(Unknown Source)
at com.lowagie.text.rtf.parser.ctrlwords.RtfCtrlWordHandler.<init>(Unknown Source)
at com.lowagie.text.rtf.parser.ctrlwords.RtfCtrlWordMap.<init>(Unknown Source)
at com.lowagie.text.rtf.parser.ctrlwords.RtfCtrlWordMgr.<init>(Unknown Source)
at com.lowagie.text.rtf.parser.RtfParser.init(Unknown Source)
at com.lowagie.text.rtf.parser.RtfParser.importRtfDocument(Unknown Source)
at com.lowagie.text.rtf.RtfWriter2.importRtfDocument(Unknown Source)
at com.lowagie.text.rtf.RtfWriter2.importRtfDocument(Unknown Source)

Java itext

2014年5月30日 16:06

兔兔同学
30
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1个答案按时间排序按投票排序

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因为它找font只支持到windows vista，你要补充个windows7或8的条件在源码里，然后编译打包替换。
private Properties getEnvironmentVariables() throws Throwable {
Properties environmentVariables = new Properties();
String operatingSystem = System.getProperty("os.name").toLowerCase();
Runtime runtime = Runtime.getRuntime();
Process process = null;
if (operatingSystem.indexOf("windows 95") > -1
|| operatingSystem.indexOf("windows 98") > -1
|| operatingSystem.indexOf("me") > -1) {
process = runtime.exec("command.com /c set");
} else if ((operatingSystem.indexOf("nt") > -1)
|| (operatingSystem.indexOf("windows 2000") > -1)
|| (operatingSystem.indexOf("windows xp") > -1)
|| (operatingSystem.indexOf("windows 2003") > -1)
|| (operatingSystem.indexOf("windows 7") > -1)
|| (operatingSystem.indexOf("windows vista") > -1)) {
process = runtime.exec("cmd.exe /c set");
} else {
process = runtime.exec("env");
}
BufferedReader environmentStream = new BufferedReader(new InputStreamReader(process.getInputStream()));
String inputLine = "";
int idx = -1;
while ((inputLine = environmentStream.readLine()) != null) {
idx = inputLine.indexOf('=');
environmentVariables.setProperty(inputLine.substring(0, idx),
inputLine.substring(idx + 1));
}
return environmentVariables;
}