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XML文件处理过程中的0x1A 错误处理

package testjavaBasic;import java.io.ByteArrayInputStream;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import org.w3c.dom.Document;import org.w3c.dom.Element;/** * @author zhangdi * */public class TestXMlTransferException_0x1a {
       public static void main(String[] args) {        String text_UAT="..."; //见test_xml        //System.out.println(CleanInvalidXmlChars_2());        //String cleanInvalidXmlChars = CleanInvalidXmlChars(text);        String[] cleanInvalidXmlChars = (String[])CleanInvalidXmlChars(text_UAT);        for (String string : cleanInvalidXmlChars) {            System.out.println(string);        }    }    /**     * 实例1     * @param text     * @return     */    public static 
   
     T CleanInvalidXmlChars(String text) {        //0-注释        // From xml spec valid chars:        // #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]        // any Unicode character, excluding the surrogate blocks, FFFE, and FFFF.        // [^//x09//x0A//x0D//x20-//xD7EF//xE000-//xFFFD//x10000-//x10FFFF]        /*Pattern pt = Pattern.compile("[^//x09//x0A//x0D//x20-//xD7EF//xE000-//xFFFD//x10000-x10FFFF]");        Matcher mat = pt.matcher(text);        return mat.replaceAll("");*/        //1-注释        //String filter = text.replaceAll("[\\x00-\\x08\\x0b-\\x0c\\x0e-\\x1f]", "");        String[] split = text.split("[\\x00-\\x08\\x0b-\\x0c\\x0e-\\x1f]");        return (T) split;          }    /**     * @return 实例2     */    public static String  CleanInvalidXmlChars_2(){         // 测试的字符串应该为：
    
     
              // 正常的对应的byte数组为          byte[] ba1 = new byte[] { 60, 114, 62, 60, 99, 32, 100, 61, 34, 115,                  34, 32, 110, 61, 34, 106, 34, 62, 60, 47, 99, 62, 60, 47, 114,                  62 };          System.out.println("ba1     length=" + ba1.length);          String ba1str = new String(ba1);          System.out.println(ba1str);          System.out.println("ba1str  length=" + ba1str.length());          System.out.println("-----------------------------------------");          // 和正常的byte 数组相比 多了一个不可见的 31          byte[] ba2 = new byte[] { 60, 114, 62, 60, 99, 32, 100, 61, 34, 115,                  34, 32, 110, 61, 34, 106, 31, 34, 62, 60, 47, 99, 62, 60, 47,                  114, 62 };          System.out.println("ba2     length=" + ba2.length);          String ba2str = new String(ba2);          System.out.println(ba2str);          System.out.println("ba2str  length=" + ba2str.length());          System.out.println("-----------------------------------------");          try {              DocumentBuilderFactory dbfactory = DocumentBuilderFactory                      .newInstance();              dbfactory.setIgnoringComments(true);              DocumentBuilder docBuilder = dbfactory.newDocumentBuilder();              // 过滤掉非法不可见字符 如果不过滤 XML解析就报异常              String filter = ba2str.replaceAll(                      "[\\x00-\\x08\\x0b-\\x0c\\x0e-\\x1f]", "");              System.out.println("过滤后的length=" + filter.length());              ByteArrayInputStream bais = new ByteArrayInputStream(filter                      .getBytes());              Document doc = docBuilder.parse(bais);              Element rootEl = doc.getDocumentElement();              System.out.println("过滤后解析正常 root child length="                      + rootEl.getChildNodes().getLength());          } catch (Exception e) {              e.printStackTrace();          }        return ba2str;      }  }
   

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