Java XMLStreamReader.getTextLength方法代碼示例

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
public static void printEvent(XMLStreamReader xmlr, boolean showEvents) {
  if (showEvents) {
    System.out.print("EVENT:[" + xmlr.getLocation().getLineNumber() + "]["
        + xmlr.getLocation().getColumnNumber() + "] [" + getEventTypeName(xmlr.getEventType())
        + "]");
    System.out.print(" [");
  }
  switch (xmlr.getEventType()) {
    case XMLStreamConstants.START_ELEMENT:
      System.out.print("<");
      printName(xmlr);
      printNamespaces(xmlr);
      printAttributes(xmlr);
      System.out.print(">");
      break;
    case XMLStreamConstants.END_ELEMENT:
      System.out.print("</");
      printName(xmlr);
      System.out.print(">");
      break;
    case XMLStreamConstants.SPACE:
    case XMLStreamConstants.CHARACTERS:
      int start = xmlr.getTextStart();
      int length = xmlr.getTextLength();
      System.out.print(new String(xmlr.getTextCharacters(), start, length));
      break;
    case XMLStreamConstants.PROCESSING_INSTRUCTION:
      System.out.print("<?");
      if (xmlr.hasText())
        System.out.print(xmlr.getText());
      System.out.print("?>");
      break;
    case XMLStreamConstants.CDATA:
      System.out.print("<![CDATA[");
      start = xmlr.getTextStart();
      length = xmlr.getTextLength();
      System.out.print(new String(xmlr.getTextCharacters(), start, length));
      System.out.print("]]>");
      break;
    case XMLStreamConstants.COMMENT:
      System.out.print("<!--");
      if (xmlr.hasText())
        System.out.print(xmlr.getText());
      System.out.print("-->");
      break;
    case XMLStreamConstants.ENTITY_REFERENCE:
      System.out.print(xmlr.getLocalName() + "=");
      if (xmlr.hasText())
        System.out.print("[" + xmlr.getText() + "]");
      break;
    case XMLStreamConstants.START_DOCUMENT:
      System.out.print("<?xml");
      System.out.print(" version='" + xmlr.getVersion() + "'");
      System.out.print(" encoding='" + xmlr.getCharacterEncodingScheme() + "'");
      if (xmlr.isStandalone())
        System.out.print(" standalone='yes'");
      else
        System.out.print(" standalone='no'");
      System.out.print("?>");
      break;
  }
  System.out.println("]");
}
 

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
/**
 * Method that not only gets currently available text from the reader, but
 * also checks that its consistenly accessible using different StAX methods.
 */
protected static String getAndVerifyText(XMLStreamReader sr) throws XMLStreamException {
    String text = sr.getText();

    /*
     * 05-Apr-2006, TSa: Although getText() is available for DTD and
     * ENTITY_REFERENCE, getTextXxx() are not. Thus, can not do more checks
     * for those types.
     */
    int type = sr.getEventType();
    if (type != ENTITY_REFERENCE && type != DTD) {
        Assert.assertNotNull("getText() should never return null.", text);
        int expLen = sr.getTextLength();
        /*
         * Hmmh. Can only return empty text for CDATA (since empty blocks
         * are legal).
         */
        /*
         * !!! 01-Sep-2004, TSa: note: theoretically, in coalescing mode, it
         * could be possible to have empty CDATA section(s) get converted to
         * CHARACTERS, which would be empty... may need to enhance this to
         * check that mode is not coalescing? Or something
         */
        if (sr.getEventType() == CHARACTERS) {
            if (expLen == 0) {
                Assert.fail("Stream reader should never return empty Strings.");
            }
        }
        Assert.assertEquals(expLen, text.length(), "Expected text length of " + expLen + ", got " + text.length());
        char[] textChars = sr.getTextCharacters();
        int start = sr.getTextStart();
        String text2 = new String(textChars, start, expLen);
        Assert.assertEquals("Expected getText() and getTextCharacters() to return same value for event of type (" + tokenTypeDesc(sr.getEventType()) + ")",
                text, text2);
    } else { // DTD or ENTITY_REFERENCE
        // not sure if null is legal for these either, but...
        if (text == null) { // let's prevent an NPE at caller
            text = "";
        }
    }
    return text;
}