这是我用于生成PDF的Java类。我正在使用iText生成PDF。
public class pdfgen {
public void createPdf(String inputFile, String outputFile, boolean isPictureFile)
{
Rectangle pageSize = new Rectangle(2780, 2525);
Document pdfDoc = new Document(pageSize);
String pdfFilePath = outputFile;
try {
FileOutputStream fileOutputStream = new FileOutputStream(pdfFilePath);
PdfWriter writer = null;
writer = PdfWriter.getInstance(pdfDoc, fileOutputStream);
writer.open();
pdfDoc.open();
if (isPictureFile){
pdfDoc.add(com.itextpdf.text.Image.getInstance(inputFile));
}
else{
URL url=new URL(inputFile);
URLConnection conn = url.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line; while ((line = in.readLine()) !=null ) {
System.out.println(line);
}
System.out.println(inputFile);
in.close();
File file = new File(inputFile);
pdfDoc.add(new Paragraph(org.apache.commons.io.FileUtils.readFileToString(file)));
}
pdfDoc.close();
writer.close();
}catch(DocumentException e){
System.err.println("The error has occured in the document");
}catch(FileNotFoundException e){
System.err.println("Your file is not found.");
}
catch(Exception e){
System.err.println("Exception: "+e);
}
}
}
这是我的JSP文件,我在其中调用上面的类
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ page import="java.util.Vector" %>
<%@page import="com.dalkin.pdfgen" %>
<% Vector result=(Vector)request.getAttribute("val");%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Output </title>
</head>
<body>
<%Vector names; %>
<%if(arrcol.size()!=0){ %>
<div style="width:1024px;">
<table cellpadding="5" cellspacing="5">
<tr>
<td>
<%for(int q=0;q<result.size();q+=3){ %>
<div style="background:url(sample.gif) no-repeat; height:320px; width:500px; float:left;">
<input type="text" size="50" value=<%=result.get(q) %>>
<input type="text" size="50" value= <%=result.get((q+1))%>>
<input type="text" size="50" value=<%=result.get((q+2))%>>
</div>
<%}} %>
</td>
</tr>
</table>
</div>
<%pdfgen pf = new pdfgen();
pf.createPdf("http://localhost:8080/New/FirstServlet","D:\\first.pdf",false);%>
</body>
</html>
当我运行程序时,我得到FileNotFoundException
"http://localhost:8080/New/FirstServlet"
Your file is not found.
谁能帮助我,我做错了什么?
答案 0 :(得分:2)
您可以像这样调用PDF创建方法
pf.createPdf("http://localhost:8080/New/FirstServlet","D:\\first.pdf",false);
在该方法中,您使用第一个参数(名为inputFile),如下所示:
File file = new File(inputFile);
“http:// localhost:8080 / New / FirstServlet”不是文件,所以
FileUtils.readFileToString(file)
一定会失败,但你得到的例外。
在你做之前的代码中
URL url=new URL(inputFile);
URLConnection conn = url.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
然后使用line = in.readLine()遍历这些行。您可以另外将行添加到某些StringBuilder并使用
中内置的String,而不仅仅是打印行pdfDoc.add(new Paragraph(...));