Recursive Dom parsing (PARSE) XML

Friends. xml

 

<Span style = "font-size: 16px;"> <? XML version = "1.0" encoding = "UTF-8"?> </P> <p> <friends date = "2012"> </P> <p> <! -- Note --> </P> <p> <friend ID = "1"> </P> <p> <Name> Xiaohong </Name> <br/> <QQ> 123456789 </QQ> </P> <p> </friend> </P> <p> <Name> Xiaoping </Name> <br/> <QQ> 12345678 </QQ> </P> <p> </friend> </P> <p> <friend> </P> <p> <name Mark = "hello"> Min </Name> <br/> <QQ> 1234567 </QQ> </P> <p> </friend> </P> <p> <friend> </P> <p> <Name> xiaoliang </Name> <br/> <QQ> 987654321 </QQ> </P> <p> </friend> </P> <p> <Name> Xiao Jian </Name> <br/> <QQ> 98765432 </QQ> </P> <p> </friend> </P> <p> </friends> </P> <p> </span>

 

Dom Parse XML

 

<Span style = "font-size: 16px;"> Import Java. io. file; </P> <p> Import javax. XML. parsers. documentbuilderfactory; <br/> Import javax. XML. parsers. documentbuilder; </P> <p> Import Org. w3C. dom. element; <br/> Import Org. w3C. dom. document; <br/> Import Org. w3C. dom. namednodemap; <br/> Import Org. w3C. dom. nodelist; <br/> Import Org. w3C. dom. ATTR; <br/> Import Org. w3C. dom. node; <br/> Import Org. w3C. dom. comment; </P> <p> // uses recursive Dom to parse any XML document and load the XML document to the memory, which occupies a large amount of memory, random Access </P> <p> public class recursiondom_xml <br/> {<br/> Public static void main (string [] ARGs) throws exception <br/> {<br/> // 1. get Dom parser factory <br/> documentbuilderfactory DBF = documentbuilderfactory. newinstance (); </P> <p> // 2. obtain the specific Dom parser <br/> documentbuilder DB = DBF. newdocumentbuilder (); </P> <p> // obtain the root node of the XML document <br/> document = dB. parse (new file ("friends. XML "); </P> <p> // get the root element node of the document <br/> element E = document. getdocumentelement (); </P> <p> parsexml (E); </P> <p >}</P> <p> Public static void parsexml (element) <br/>{< br/> // obtain the information of the element node <br/> string name = element. getnodename (); <br/> system. out. print ("<" + name); </P> <p> // obtain the attributes of this element node <br/> namednodemap map = element. getattributes (); </P> <p> // obtain the child nodes (including spaces) under the current element node </span><Span style = "font-size: 16px;"> nodelist child = element. getchildnodes (); </P> <p> If (null! = Map) <br/>{< br/> for (INT I = 0; I <map. getlength (); I ++) <br/>{< br/> ATTR = (ATTR) map. item (I); </P> <p> string name1 = ATTR. getname (); <br/> string value1 = ATTR. getvalue (); <br/> system. out. print ("" + name1 + "= \" "+ value1 + "\""); <br/>}</P> <p> system. out. print (">"); </P> <p> for (Int J = 0; j <child. getlength (); j ++) <br/>{< br/> node = child. item (j); </P> <p> // determines whether the node is an element. Node, recursive intersection <br/> If (node. getnodetype () = node. element_node) <br/>{< br/> // start recursion <br/> parsexml (element) node ); <br/>}</P> <p> // determines whether the node is text or not. Recursive exit <br/> else if (node. getnodetype () = node. text_node) <br/>{< br/> system. out. print (node. getnodevalue () + ""); </P> <p >}</P> <p> // determines whether the node is annotated. <br/> else if (node. getnodetype () = node. comment_node) <br/>{< br/> system. out. print ("<! -- "); <Br/> Comment comment = (comment) node; <br/> // comment content <br/> string data = comment. getdata (); </P> <p> system. out. print (data); <br/> system. out. print ("-->"); </P> <p >}< br/>}</P> <p> system. out. println ("</" + name + ">"); </P> <p >}</span>