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1
7
8 import java.io.File  ;
9 import java.io.BufferedReader ;
10 import java.io.StringReader ;
11 import java.io.PrintWriter ;
12 import java.io.StringWriter ;
13 import java.io.IOException ;
14
15 import org.jdom.Document;
16 import org.jdom.JDOMException;
17 import org.jdom.input.SAXBuilder;
18
19
20 public class XMLVerifier
21 {
22 private File xml;
23
24 public XMLVerifier(File file)
25 {
26 xml = file;
27 }
28
29 public XMLVerifier(String file)
30 {
31 this(new File (file));
32 }
33
34 public void verify()throws IOException
35 {
36 try
37 {
38 System.out.println("Verifying file "+xml+"...");
39 SAXBuilder builder = new SAXBuilder(true);
40 Document doc = builder.build(xml);
41 System.out.println("This file is valid...");
42 }
43 catch(JDOMException e)
44 {
45 System.out.println("\n\n*********************************************************************");
46 Throwable t = e.getCause();
47 if(t != null)
48 {
49 StringWriter stw = new StringWriter ();
50 PrintWriter sw = new PrintWriter (stw);
51 t.printStackTrace(sw);
52 BufferedReader br = new BufferedReader (new StringReader ((stw.getBuffer()).toString()));
53
54 String firstLine = br.readLine();
55 if(firstLine.indexOf("java.net.UnknownHostException")!=-1)
56 {
57 System.out.println(t.getMessage());
58 System.out.println("Unable to find external entity. Try invocation with \n java \"-DproxySet=true\" \"-DproxyHost=<IP of Proxy Host>\" \"-DproxyPort=<Proxy Port>\" XMLVerifier <absolute path to XML file>");
59 System.out.println();
60 System.out.println();
61 t.printStackTrace();
62 }
63 else if(firstLine.indexOf("org.xml.sax.SAXParseException")!=-1)
64 {
65 System.out.println(t.getMessage());
66 System.out.println("The XML given as input is Not Valid as per its DTD.");
67 System.out.println();
68 System.out.println();
69 t.printStackTrace();
70 }
71 else
72 {
73 System.out.println(t.getMessage());
74 System.out.println();
75 System.out.println();
76 t.printStackTrace();
77 }
78 }
79 System.out.println("\n\n*********************************************************************");
80 }
81 }
82
83 public static void main(String args[])throws IOException
84 {
85 if(args.length == 0)
86 {
87 System.out.println("Usage:");
88 System.out.println("java XMLVerifier <absolute path to XML file>");
89 System.exit(0);
90 }
91 else
92 {
93 XMLVerifier verifier = new XMLVerifier(args[0]);
94 verifier.verify();
95 }
96 }
97 } |
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