1 <?xml version="1.0" encoding="UTF-8"?> 2 <bk:books count="3" xmlns:bk="http://test.org/books"> 3     <!--books‘s comment --> 4     <bk:book id="1"> 5         <bk:name>Thinking in JAVA</bk:name> 6     </bk:book> 7     <bk:book id="2"> 8         <bk:name>Core JAVA2</bk:name> 9     </bk:book>10     <bk:book id="3">11         <bk:name>C++ primer</bk:name>12         <addr:address xmlns:addr="http://test.org/address">13             <addr:state>China</addr:state>14             <addr:city>ShangHai</addr:city>15         </addr:address>16     </bk:book>17 </bk:books> 

  1 package sax.parsing.example;  2   3 import java.io.FileInputStream;  4 import java.io.FileNotFoundException;  5 import java.io.IOException;  6 import java.io.Reader;  7   8 import org.testng.annotations.Test;  9 import org.xml.sax.Attributes; 10 import org.xml.sax.ContentHandler; 11 import org.xml.sax.InputSource; 12 import org.xml.sax.Locator; 13 import org.xml.sax.SAXException; 14 import org.xml.sax.XMLReader; 15 import org.xml.sax.helpers.XMLReaderFactory; 16  17 import bsh.This; 18  19  20 class MyContentHandler implements ContentHandler { 21      22     private StringBuffer stringBuffer; 23     int frontBlankCount = 0; 24      25      26     public String toBlankString(int count) { 27         StringBuffer buffer = new StringBuffer(); 28         for (int i=0; i<count; i++)  29             buffer.append("    "); 30         return buffer.toString(); 31     } 32  33     @Override 34     public void setDocumentLocator(Locator locator) { 35         System.out.println(this.toBlankString(this.frontBlankCount) 36                 + ">>> set document_locator : (lineNumber = " + locator.getLineNumber() 37                 + ", columnNumber = " + locator.getColumnNumber() 38                 + ", systemId = " + locator.getSystemId() 39                 + ". publicId = " + locator.getPublicId() 40                 + ")" 41                 ); 42     } 43  44     @Override 45     public void startDocument() throws SAXException { 46         System.out.println(this.toBlankString(frontBlankCount) + ">>> start document");     47     } 48  49     @Override 50     public void endDocument() throws SAXException { 51         System.out.print(this.toBlankString(frontBlankCount) + ">>> end document");     52     } 53  54     @Override 55     public void startPrefixMapping(String prefix, String uri) throws SAXException { 56         System.out.println("\n" + this.toBlankString(this.frontBlankCount)  57                 + ">>> start prefix_mapping : xmlns:" + prefix + "=\"" + uri + "\""); 58     } 59  60     @Override 61     public void endPrefixMapping(String prefix) throws SAXException { 62         System.out.print("\n" + this.toBlankString(this.frontBlankCount) + ">>> end prefix_mapping : " + prefix); 63     } 64  65     @Override 66     public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException { 67         System.out.print(this.toBlankString(this.frontBlankCount++) + ">>> start element : "  68                     + qName + "(" + uri + ")" 69                     ); 70     } 71  72     @Override 73     public void endElement(String uri, String localName, String qName) throws SAXException { 74         System.out.print(this.toBlankString(--this.frontBlankCount) + ">>> end element : " 75                 + qName + "(" + uri + ")" 76                 ); 77     } 78  79     /** 80      *  Text文本节点 处理 81      */ 82     @Override 83     public void characters(char[] ch, int start, int length) throws SAXException { 84          85         StringBuffer buffer = new StringBuffer(); 86          87         for (int i=start; i<start+length; i++) { 88             switch (ch[i]) { 89                 case ‘\\‘: buffer.append("\\\\");break; 90                 case ‘\r‘: buffer.append("\\r");break; 91                 case ‘\n‘: buffer.append("\\n");break; 92                 case ‘\t‘: buffer.append("\\t");break; 93                 case ‘\"‘: buffer.append("\\\"");break; 94                 default: buffer.append(ch[i]); 95             } 96         } 97         System.out.println("\t>>> characters(" + length + "): " + buffer.toString()); 98     } 99 100     @Override101     public void ignorableWhitespace(char[] ch, int start, int length) throws SAXException {102         103         StringBuffer buffer = new StringBuffer();104         105         for (int i=start; i<start+length; i++) {106             switch (ch[i]) {107                 case ‘\\‘: buffer.append("\\\\");break;108                 case ‘\r‘: buffer.append("\\r");break;109                 case ‘\n‘: buffer.append("\\n");break;110                 case ‘\t‘: buffer.append("\\t");break;111                 case ‘\"‘: buffer.append("\\\"");break;112                 default: buffer.append(ch[i]);113             }114         }115         System.out.print(this.toBlankString(frontBlankCount) 116                 + ">>> ignorable whitespace(" + length + "): " + buffer.toString());117     }118 119     @Override120     public void processingInstruction(String target, String data) throws SAXException {121         System.out.print(this.toBlankString(this.frontBlankCount) 122                 + ">>> process instruction : (target = \"" + target + "\", data = http://www.mamicode.com/"" + data + ")");123         124     }125 126     @Override127     public void skippedEntity(String name) throws SAXException {128         System.out.print(this.toBlankString(this.frontBlankCount) + ">>> skipped_entity : " + name); 129     }130 }131 132 public class SaxTest {133     134     135     @Test136     public void test() throws SAXException, FileNotFoundException, IOException {137         138         139         XMLReader reader = XMLReaderFactory.createXMLReader(); 140         reader.setFeature("http://xml.org/sax/features/validation", true);141         reader.setFeature("http://xml.org/sax/features/namespaces", true);142         reader.setContentHandler(new MyContentHandler());143         reader.parse(new InputSource(new FileInputStream("src/sax/parsing/example/books.xml")));144         145     }146 }

输出结果：

>>> set document_locator : (lineNumber = 1, columnNumber = 1, systemId = null. publicId = null)
>>> start document
[Error] :5:10: Document is invalid: no grammar found.
[Error] :5:10: Document root element "bk:books", must match DOCTYPE root "null".

>>> start prefix_mapping : xmlns:bk="http://test.org/books"
>>> start element : bk:books(http://test.org/books) >>> characters(2): \n\t
　　>>> start element : bk:book(http://test.org/books) >>> characters(3): \n\t\t
　　　　>>> start element : bk:name(http://test.org/books) >>> characters(16): Thinking in JAVA
　　　　>>> end element : bk:name(http://test.org/books) >>> characters(2): \n\t
　　>>> end element : bk:book(http://test.org/books) >>> characters(2): \n\t
　　>>> start element : bk:book(http://test.org/books) >>> characters(3): \n\t\t
　　　　>>> start element : bk:name(http://test.org/books) >>> characters(10): Core JAVA2
　　　　>>> end element : bk:name(http://test.org/books) >>> characters(2): \n\t
　　>>> end element : bk:book(http://test.org/books) >>> characters(2): \n\t
　　>>> start element : bk:book(http://test.org/books) >>> characters(3): \n\t\t
　　　　>>> start element : bk:name(http://test.org/books) >>> characters(10): C++ primer
　　　　>>> end element : bk:name(http://test.org/books) >>> characters(3): \n\t\t

　　　　>>> start prefix_mapping : xmlns:addr="http://test.org/address"
　　　　>>> start element : addr:address(http://test.org/address) >>> characters(4): \n\t\t\t
　　　　　　>>> start element : addr:state(http://test.org/address) >>> characters(5): China
　　　　　　>>> end element : addr:state(http://test.org/address) >>> characters(4): \n\t\t\t
　　　　　　>>> start element : addr:city(http://test.org/address) >>> characters(8): ShangHai
　　　　　　>>> end element : addr:city(http://test.org/address) >>> characters(3): \n\t\t
　　　　>>> end element : addr:address(http://test.org/address)
　　　　>>> end prefix_mapping : addr >>> characters(2): \n\t
　　>>> end element : bk:book(http://test.org/books) >>> characters(1): \n
>>> end element : bk:books(http://test.org/books)
>>> end prefix_mapping : bk>>> end document