我想寫一個簡單的SAX解析器,我從Web服務響應接收輸入,它包括轉義字符<和>當我試圖用我的代碼解析它時,我我正在得到參考是不允許在序言。錯誤,如果我將轉義字符更改爲正常<和>字符它解析沒有任何問題,我想我只是在這裏錯過了一些非常簡單的東西...有人可以請幫忙嗎?XML沒有用轉義字符解析
import java.io.ByteArrayInputStream;
import java.io.FileReader;
import java.io.InputStream;
import org.xml.sax.XMLReader;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.helpers.XMLReaderFactory;
import org.xml.sax.helpers.DefaultHandler;
public class Test extends DefaultHandler {
public static void main(String args[]) throws Exception {
XMLReader xr = XMLReaderFactory.createXMLReader();
Test handler = new Test();
xr.setContentHandler(handler);
xr.setErrorHandler(handler);
String xml_string = "<rootnode><a>hello</a><b>world</b></rootnode>";
InputStream xmlStream = new ByteArrayInputStream(xml_string.getBytes("UTF-8"));
xr.parse(new InputSource(xmlStream));
}
public Test() {
super();
}
////////////////////////////////////////////////////////////////////
// Event handlers.
////////////////////////////////////////////////////////////////////
public void startDocument() {
System.out.println("Start document");
}
public void endDocument() {
System.out.println("End document");
}
public void startElement(String uri, String name, String qName, Attributes atts) {
if ("".equals(uri))
System.out.println("Start element: " + qName);
else
System.out.println("Start element: {" + uri + "}" + name);
}
public void endElement(String uri, String name, String qName) {
if ("".equals(uri))
System.out.println("End element: " + qName);
else
System.out.println("End element: {" + uri + "}" + name);
}
public void characters(char ch[], int start, int length) {
System.out.print("Characters: \"");
for (int i = start; i < start + length; i++) {
switch (ch[i]) {
case '\\':
System.out.print("\\\\");
break;
case '"':
System.out.print("\\\"");
break;
case '\n':
System.out.print("\\n");
break;
case '\r':
System.out.print("\\r");
break;
case '\t':
System.out.print("\\t");
break;
default:
System.out.print(ch[i]);
break;
}
}
System.out.print("\"\n");
}
}
非常感謝克里斯。 –