Java object converted to XML (text content)

Editor's summary: Converting Java objects to XML files is simple, but converting Java objects to <! [cdata[text content]]> output does not escape the form is very difficult. We all know that in XML elements, "<" and "&" are illegal. "<" generates an error because the parser interprets the character as the beginning of the new element. "&" also generates an error because the parser interprets the character as the beginning of the character entity. Some text, such as JavaScript code, contains a large number of "<" or "&" characters. To avoid errors, you can define your scripting code as CDATA.

CDATA: Under Tag CDATA, all tags, entity references are ignored, and the XML handlers are treated equally as character data, CDATA in the form of the following:

<! [cdata[text content]]>

CDATA The string "]]>" cannot appear in the text content, and CDATA cannot be nested.

The specific implementation process is as follows:

Java Entity classes:

PUBLICCLASSJAVADOCU {

    privateintid;

    private String text;

    Publicint getId () {

        returnid;

    }

    Publicvoid setId (int id) {

        this.id = ID;

    }

    Public String GetText () {

        returntext;

    }

    Publicvoid SetText (String text) {

        this.text = text;

    }

}

Myxppdriver class:

Publicclassmyxppdriver extends Xppdriver {public

    hierarchicalstreamwritercreatewriter (Writer out) {

        Returnnew Myprettyprintwriter (out);

    }

Myprettyprintwriter class:

Publicclassmyprettyprintwriterimplementsextendedhierarchicalstreamwriter {privatefinal QuickWriter writer;

    privatefinal faststack elementstack = new Faststack (16);

 

    Privatefinalchar[] Lineindenter;

    privatebooleantaginprogress;

    privateintdepth;

    Privatebooleanreadyfornewline;

 

    Privatebooleantagisempty;

    privatestaticfinalchar[] AMP = "&". ToCharArray ();

    privatestaticfinalchar[] LT = "<". ToCharArray ();

    privatestaticfinalchar[] GT = ">". ToCharArray ();

    privatestaticfinalchar[] Slash_r = "". ToCharArray ();

    privatestaticfinalchar[] QUOT = "". ToCharArray ();

    privatestaticfinalchar[] APOS = "'". ToCharArray ();

 

    privatestaticfinalchar[] Close = "</". ToCharArray ();

        Publicmyprettyprintwriter (Writer Writer, char[] lineindenter) {this.writer = new Quickwriter (Writer);

    This.lineindenter = Lineindenter; } publicmyprettyprintwriter (Writer Writer, String lineindenter) {thIs (Writer,lineindenter.tochararray ());

    Public Myprettyprintwriter (Printwriterwriter) {This (writer, newchar[] {', '});

    } publicmyprettyprintwriter (Writer Writer) {This (new PrintWriter (Writer));

        @Override publicvoid AddAttribute (Stringkey, String value) {writer.write (');

        Writer.write (key);

        Writer.write (' = ');

        Writer.write (' \ ");

        Writeattributevalue (writer, value);

    Writer.write (' \ ");

        } protectedvoidwriteattributevalue (Quickwriter writer, String text) {int length = Text.length ();

            for (int i = 0; i < length;i++) {char c = text.charat (i);

                Switch (c) {case ' & ': This.writer.write (AMP);

            Break

                Case ' < ': This.writer.write (LT);

            Break

         Case ' > ': This.writer.write (GT);       Break

                Case ' ": This.writer.write (QUOT);

            Break

                Case ' \ ': This.writer.write (APOS);

            Break

                Case ' \ R ': This.writer.write (Slash_r);

            Break

            Default:this.writer.write (c);

        }}} @Override publicvoid Endnode () {depth--;

            if (tagisempty) {writer.write ('/');

            Readyfornewline = false;

            Finishtag ();

        Elementstack.popsilently ();

            }else{Finishtag ();

            Writer.write (Close);

            Writer.write ((String) Elementstack.pop ());

        Writer.write (' > ');

        } Readyfornewline = true;

        if (depth = = 0) {Writer.flush ();

        }} @Override publicvoid SetValue (String text) {readyfornewline = false; Tagisempty = false;

        Finishtag ();

    WRITETEXT (writer, text);

        } protectedvoid WriteText (Quickwriterwriter, String text) {int length = Text.length (); Stringcdataprefix = "<!

 

        [cdata[]; if (!text.startswith (Cdataprefix)) {for (int i = 0; i < length;i++) {char c = Text.chara

                T (i);

                    Switch (c) {case ' & ': This.writer.write (AMP);

                Break

                    Case ' < ': This.writer.write (LT);

                Break

                    Case ' > ': This.writer.write (GT);

                Break

                    Case ' ": This.writer.write (QUOT);

                Break

                    Case ' \ ': This.writer.write (APOS);

                Break

                    Case ' \ R ': This.writer.write (Slash_r); Break;

                Default:this.writer.write (c);  }} else {for (int i = 0; i < length;i++) {char c =

                Text.charat (i);

            This.writer.write (c);

        @Override publicvoid startnode (String name) {Tagisempty = False}}}}

        Finishtag ();

        Writer.write (' < ');

        Writer.write (name);

        Elementstack.push (name);

        Taginprogress = true;

        depth++;

        Readyfornewline = true;

    Tagisempty = true;

        } privatevoid Finishtag () {if (taginprogress) {writer.write (' > ');

        } taginprogress = false;

        if (readyfornewline) {endofline ();

        } Readyfornewline = false;

    Tagisempty = false;

        } protectedvoid EndOfLine () {writer.write (' \ n '); for (int i = 0; i < DEPTh

        i++) {writer.write (lineindenter);

    } publicvoid Flush () {Writer.flush ();

    } publicvoid Close () {writer.close ();

    } @Override publichierarchicalstreamwriter Underlyingwriter () {returnthis; @Override publicvoid startnode (String name, @SuppressWarnings ("Rawtypes") Class arg1) {//TODO Aut

        o-generated Method Stub tagisempty = false;

        Finishtag ();

        Writer.write (' < ');

        Writer.write (name);

        Elementstack.push (name);

        Taginprogress = true;

        depth++;

        Readyfornewline = true;

    Tagisempty = true; 
 }

}

Java Test class:

publicclassjavadocutest {publicstaticvoid main (string[] args) throws ioexception,jaxbexception {Long T1

        = System.currenttimemillis (); Stringcdataprefix = "<!

        [cdata[];

        Stringcdatabackfix = "]]>";

        JAVADOCUJAVADOCU = NEWJAVADOCU ();

        JavaDocujavadocu2 = NEWJAVADOCU ();

        Javadocu.settext (cdataprefix+ "This is a test" + cdatabackfix);

        Javadocu2.settext (cdataprefix+ "This is another test" + cdatabackfix);

        List<javadocu>list = newarraylist<javadocu> ();

        List.add (JAVADOCU);

        List.add (JAVADOCU2);

        Xstreamxstream = Newxstream (Newmyxppdriver ());

            for (int i = 0; I <list.size (); i++) {list.get (i) setId (i);

            Xstream.alias ("Javatoxml", Javadocu.class);

            Xstream.useattributefor (Javadocu.class, "id");

        Xstream.useattributefor ("id", string.class);

        } System.out.println (Xstream.toxml (list)); Xstream.toxml (list, new PrinTwriter ("c:\\ test. xml", "Utf-8")); }

}

The above code can be implemented to convert JavaBean to include <! [cdata[text content]]> XML file.

Warm tip: This process uses Xstream.1.3.1.jar, please download the required Jar Pack (free) to http://download.csdn.net/detail/yaohucaizi/5120422.

This article original Yhcz due to the summary process is not easy to reprint, please indicate the source, thank you.