dom4j解析xml时报出文件提前结束

dom4j解析xml时报出文件提前结束

在写javaweb小项目的时候,用dom4j解析xml报出如下错误:

org.dom4j.DocumentException:Error    .......    Nested exception: 文件提前结束。

 1 package com.miragic.utils;
 2 
 3 import java.io.FileNotFoundException;
 4 import java.io.FileOutputStream;
 5 
 6 import java.io.UnsupportedEncodingException;
 7 
 8 import org.dom4j.Document;
 9 import org.dom4j.DocumentException;
10 import org.dom4j.io.OutputFormat;
11 import org.dom4j.io.SAXReader;
12 import org.dom4j.io.XMLWriter;
13 
14 //操作XML文件的方法
15 public class JaxpUtils {
16 
17     static String path;
18     
19     static {
20         path=JaxpUtils.class.getClassLoader().getResource("users.xml").getPath();
21                 
22     }
23         public static Document getDocument() {
24             //创建一个dom4j解析器
25             try {
26                 SAXReader reader=new SAXReader();
27                 Document document=reader.read(path);
28                 return document;
29             } catch (DocumentException e) {
30                 // TODO Auto-generated catch block
31                 e.printStackTrace();
32             }        
33             return null;
34         }
35         
36         public static void write2xml(Document document) {
37             
38             try {
39                 XMLWriter writer=new XMLWriter(new FileOutputStream(path),OutputFormat.createPrettyPrint());
40                 
41             } catch (UnsupportedEncodingException e) {
42                 // TODO Auto-generated catch block
43                 e.printStackTrace();
44             } catch (FileNotFoundException e) {
45                 // TODO Auto-generated catch block
46                 e.printStackTrace();
47             }
48             
49         }
50         
51 }

百度了好久,有的说是xml没有根目录,有的说是xml格式不对,然后我检查了xml格式并且重写了好几次,但都木有用,以下为xml代码:

1 2 3 4

<?xml version="1.0" encoding="UTF-8"?> <users>     <user username="miragic" password="000000" email="469548329@qq.com" birthday="1997-2-1" ></user> </users>

　　同时,还排除了一下编码的错误,并没有发现异常.

错误原因:解析xml没有关流

解决方法:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62

package com.miragic.utils;   import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.UnsupportedEncodingException;   import org.dom4j.Document; import org.dom4j.DocumentException; import org.dom4j.io.OutputFormat; import org.dom4j.io.SAXReader; import org.dom4j.io.XMLWriter;   //操作XML文件的方法 public class JaxpUtils {       static String path;           static {         path=JaxpUtils.class.getClassLoader().getResource("users.xml").getPath();                         }                     //private static Document document;           public static Document getDocument() {             //创建一个dom4j解析器             try {                 SAXReader reader=new SAXReader();                 Document document=reader.read(path);                 return document;             } catch (DocumentException e) {                 // TODO Auto-generated catch block                 e.printStackTrace();             }                   return null;         }                   public static void write2xml(Document document) {                           try {                 XMLWriter writer=new XMLWriter(new FileOutputStream(path),OutputFormat.createPrettyPrint());                 writer.write(document) ;                 writer.close() ;             } catch (UnsupportedEncodingException e) {                 // TODO Auto-generated catch block                 e.printStackTrace();             } catch (FileNotFoundException e) {                 // TODO Auto-generated catch block                 e.printStackTrace();             }catch(IOException e) {                 e.printStackTrace();             }                       }                                         }

　　加了两行

writer.write(document);

writer.close();

问题解决.

总结:一个简单的小错误,说白了还是理解的不够透彻导致写代码的时候丢三落四,好歹问题解决了,找bug的时候内心真的是绝望啊!!!!!!!