Parse XML with Dom

Example 1:

Package COM. shengsiyuan. XML. dom; import Java. io. file; import javax. XML. parsers. documentbuilder; import javax. XML. parsers. documentbuilderfactory; import Org. w3C. dom. document; import Org. w3C. dom. element; import Org. w3C. dom. nodelist; public class domtest1 {public static void main (string [] ARGs) throws exception {// Step 1: obtain the DOM parser factory (which is used to create a specific parser) documentbuilderfactory DBF = documentbuilderfactory. newinstance (); // system. out. println ("Class Name:" + DBF. getclass (). getname (); // Step 2: Obtain the specific Dom parser documentbuilder DB = DBF. newdocumentbuilder (); // system. out. println ("Class Name:" + dB. getclass (). getname (); // Step 3: parse an XML document and obtain the Document Object (root node) document = dB. parse (new file ("candidate. XML "); nodelist list = document. getelementsbytagname ("person"); For (INT I = 0; I <list. getlength (); I ++) {element = (element) list. item (I); string content = element. getelementsbytagname ("name "). item (0 ). getfirstchild (). getnodevalue (); system. out. println ("name:" + content); content = element. getelementsbytagname ("Address "). item (0 ). getfirstchild (). getnodevalue (); system. out. println ("Address:" + content); content = element. getelementsbytagname ("tel "). item (0 ). getfirstchild (). getnodevalue (); system. out. println ("Tel:" + content); content = element. getelementsbytagname ("fax "). item (0 ). getfirstchild (). getnodevalue (); system. out. println ("Fax:" + content); content = element. getelementsbytagname ("email "). item (0 ). getfirstchild (). getnodevalue (); system. out. println ("Email:" + content); system. out. println ("--------------------------------------");}}}

Example 2:

Package COM. shengsiyuan. XML. dom; import Java. io. file; import javax. XML. parsers. documentbuilder; import javax. XML. parsers. documentbuilderfactory; import Org. w3C. dom. document; import Org. w3C. dom. element; import Org. w3C. dom. namednodemap; import Org. w3C. dom. node; import Org. w3C. dom. nodelist; public class domtest2 {public static void main (string [] ARGs) throws exception {documentbuilderfactory DBF = documentbuilderfactory. newinstance (); documentbuilder DB = DBF. newdocumentbuilder (); document DOC = dB. parse (new file ("student. XML "); // system. out. println (Doc. getxmlencoding (); // system. out. println (Doc. getxmlversion (); // system. out. println (Doc. getxmlstandalone (); // obtain the root element node of the document. Element root = Doc. getdocumentelement (); system. out. println (root. gettagname (); nodelist list = root. getchildnodes (); system. out. println (list. getlength (); For (INT I = 0; I <list. getlength (); I ++) {system. out. println (list. item (I ). getnodename ();} system. out. println ("--------------------------------"); For (INT I = 0; I <list. getlength (); I ++) {node n = List. item (I); system. out. println (N. getnodetype () + ":" + N. getnodevalue ();} system. out. println ("--------------------------------"); For (INT I = 0; I <list. getlength (); I ++) {node n = List. item (I); system. out. println (N. gettextcontent ();} system. out. println ("----------------------------------"); nodelist = Doc. getelementsbytagname ("student"); For (INT I = 0; I <nodelist. getlength (); I ++) {namednodemap NNM = nodelist. item (I ). getattributes (); string attrname = NNM. item (0 ). getnodename (); system. out. print (attrname); system. out. print ("="); string attrvalue = NNM. item (0 ). getnodevalue (); system. out. println (attrvalue );}}}

Example 3:

Package COM. shengsiyuan. XML. dom; import Java. io. file; import javax. XML. parsers. documentbuilder; import javax. XML. parsers. documentbuilderfactory; import Org. w3C. dom. ATTR; import Org. w3C. dom. comment; import Org. w3C. dom. document; import Org. w3C. dom. element; import Org. w3C. dom. namednodemap; import Org. w3C. dom. node; import Org. w3C. dom. nodelist;/*** use recursion to parse any given XML document and output its content to the command line * @ author zhanglong **/Public C Lass domtest3 {public static void main (string [] ARGs) throws exception {documentbuilderfactory DBF = documentbuilderfactory. newinstance (); documentbuilder DB = DBF. newdocumentbuilder (); document DOC = dB. parse (new file ("student. XML "); // obtain the root element node element root = Doc. getdocumentelement (); parseelement (Root);} Private Static void parseelement (element) {string tagname = element. getnodename (); nodelist ch Ilease = element. getchildnodes (); system. out. print ("<" + tagname); // namednodemap object composed of all the attributes of the element, which must be judged by namednodemap map = element. getattributes (); // If the element has an attribute if (null! = Map) {for (INT I = 0; I <map. getlength (); I ++) {// obtain each attribute of this element ATTR = (ATTR) map. item (I); string attrname = ATTR. getname (); string attrvalue = ATTR. getvalue (); system. out. print ("" + attrname + "= \" "+ attrvalue +" \ "") ;}} system. out. print (">"); For (INT I = 0; I <children. getlength (); I ++) {node = children. item (I); // obtain the node type short nodetype = node. getnodetype (); If (nodetype = node. element_node) {// The Element, Continue recursion parseelement (element) node);} else if (nodetype = node. text_node) {// recursively exports system. out. print (node. getnodevalue ();} else if (nodetype = node. comment_node) {system. out. print ("<! -- "); Comment comment = (comment) node; // comment content string data = comment. getdata (); system. out. print (data); system. out. print ("-->") ;}} system. out. print ("</" + tagname + "> ");}}