使用pdfBox读取PDF文件注意问题
本来想要iText来读取pdf的，结果网上搜索下得出结论，使用iText读取pdf基本上是无法实现的。
于是还是改用了pdfBox来读取文件。于是造成了iText与pdfBox混用的尴尬。
虽然如此，但也遇到了不少问题。下面分析遇到的问题。
---------------------------------------------------------------------------------
1.首先最好要下载pdfbox 1.1的版本。处理文档方面比较完善,如果是低版本的话，是不支持字体与语言的读取。会报错。
2.另外还要下载fontbox 1.1 的包，这对多种字体以及多种语言的支持。注意版本，不然会报有一些类找不到。
3.还要加入common-loggin的包，不然进行读取的时候会遇到类找不到异常，主要是用到org.apache.commons.logging.LogFactory类
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遇到的问题主要是使用的包版本太对，或者两者的版本不匹配造成的。
贴个使用pdfbox来读取pdf文档内容的代码：
/**
* 读取指定路径的pdf文件的文本内容<br>
* @param filePath 指定路径
* @return pdf文件的文本内容
* @throws IOException
*/
public String readPdf(String filePath) throws IOException{
File file = new File(filePath);
FileInputStream fis = new FileInputStream(file);
//创建一个PDF解析器
PDFParser parser = new PDFParser(fis);
//进行解析
parser.parse();
//得到PDF文档对象
PDDocument document = parser.getPDDocument();
//新建一个PDF文件剥离器
PDFTextStripper stripper = new PDFTextStripper();
//从文档对象中剥离文本
String content = stripper.getText(document);
fis.close();
document.close();
return content;
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