Conversion between Jdom, Dom4j, W3c, and String, obtaining Xml attribute values, setting Xml attribute values, and deleting Xm attribute values

Jdom, Dom4j, W3c, String mutual conversion Daquan and take Xml attribute values, set Xml attribute values, delete Xm attribute values source code: http: www.zuidaima.com%1550463324146688.htm

Conversion between Jdom, Dom4j, W3c, and String, obtaining Xml attribute values, setting Xml attribute values, and deleting Xm attribute values

Source code:

Original article: mutual conversion between Jdom, Dom4j, W3c, and String, retrieving Xml attribute values, setting Xml attribute values, and deleting Xm attribute values

Source code: http://www.zuidaima.com/share/1550463324146688.htm

Package com. zuidaima. xml; import java. io. charArrayReader; import java. io. IOException; import java. io. stringReader; import java. io. stringWriter; import javax. xml. parsers. documentBuilder; import javax. xml. parsers. documentBuilderFactory; import org. apache. xerces. dom. entimpl; import org. apache. xerces. parsers. DOMParser; import org. apache. xml. serialize. outputFormat; import org. apache. xml. serialize. XMLSerializ Er; import org. apache. xpath. XPathAPI; import org. jdom. input. DOMBuilder; import org. w3c. dom. document; import org. w3c. dom. element; import org. w3c. dom. node; import org. w3c. dom. nodeList; import org. xml. sax. inputSource; import org. xml. sax. SAXException;/*** convert the document Object to string data * @ author www.zuidaima.com * @ param dom * @ return */public class XmlChange {/*** to convert the document object, convert to string data * @ param dom * @ return */public Static String dom2String (Document dom) // converts a document object to String data. {String aa = new String (); try {StringWriter ss = new StringWriter (); OutputFormat format = new OutputFormat (dom); // Serialize DOMformat. setEncoding ("GB2312"); XMLSerializer serial = new XMLSerializer (ss, format); serial. asDOMSerializer (); // As a DOM Serializerserial. serialize (dom. getDocumentElement (); aa = ss. toString (); ss. flush (); ss. close ();} catch (Exception e) {// return false;} return aa ;}/*** String to document * @ author www.zuidaima.com * @ param XMLData * @ return */public static Document string2Dom (String XMLData) // Parse String xml data and generate document {// System. out. println ("xml:" + XMLData); Document dom = new jsonentimpl (); try {InputSource source = new InputSource (new CharArrayReader (XMLData. toCharArray (); System. out. println ("----- 888888 =" + source); DocumentBuilderFactory docBuilderFactory = DocumentBu IlderFactory. newInstance (); DocumentBuilder docBuilder = docBuilderFactory. newDocumentBuilder (); dom = docBuilder. parse (source); System. out. println ("----- 888888 =" + dom);} catch (Exception e) {dom = null;} finally {return dom ;}/ *** parse string xml data, generate a document and filter the spaces in the xml. * @ author www.zuidaima.com * @ param data * @ param isSpace * @ return * @ throws IOException * @ throws SAXException */public static escape E Nt string2Dom (String data, boolean isSpace) throws IOException, SAXException // Parse the String xml data, generate a document, filter spaces in the xml {if (isSpace) {DOMParser parser = new DOMParser (); StringReader sr = new StringReader (data); InputSource is = new InputSource (sr); parser. parse (is); sr. close (); return parser. getDocument () ;}else {return null ;}/ *** implements dom4j to org. w3c. dom. document Conversion ** @ param doc * @ return * @ throws Exception * /Public static org. w3c. dom. document dom4j2W3c (Document doc) throws Exception {if (doc = null) {return (null);} java. io. stringReader reader = new java. io. stringReader (doc. toString (); org. xml. sax. inputSource source = new org. xml. sax. inputSource (reader); javax. xml. parsers. documentBuilderFactory documentBuilderFactory = javax. xml. parsers. documentBuilderFactory. newInstance (); javax. xml. parsers. documentBu Ilder documentBuilder = documentBuilderFactory. newDocumentBuilder (); return (documentBuilder. parse (source);}/***** implement org. w3c. dom. conversion from Document to dom4j ** @ param doc * @ return * @ throws Exception */public static org. dom4j. document parse (org. w3c. dom. document doc) throws Exception {if (doc = null) {return (null);} org. dom4j. io. DOMReader xmlReader = new org. dom4j. io. DOMReader (); return (xmlReader. read (do C);}/***** implement org. w3c. dom. conversion from Document to jdom ** @ param doc * @ return * @ throws Exception */public static org. jdom. document convertToJDOM (org. w3c. dom. document doc) throws Exception {if (doc = null) {return (null);} DOMBuilder builder = new DOMBuilder (); org. jdom. document jdomDoc = builder. build (doc); return jdomDoc;}/*** according to the tagName, attributeName obtains the corresponding Node attribute value from xml and may have multiple nodes defined by tagName, take the first ** @ param d Om * @ param tagName * @ attributeName * @ return Attribute; */public static String getAttributeValueFromDom (Document dom, String tagName, String attributeName) {String result = ""; if (dom! = Null & tagName! = Null &&! TagName. trim (). equals ("") & attributeName! = Null &&! AttributeName. trim (). equals ("") {NodeList nodeList = null; Node node = null; nodeList = dom. getElementsByTagName (tagName. trim (); if (nodeList! = Null & nodeList. getLength ()> 0) {/*** there may be multiple nodes defined by tagnames in xml, and the first Node is */node = nodeList. item (0); if (node! = Null) {result = (Element) node). getAttribute (attributeName); result = null? "": Result. trim () ;}} return result ;} /*** set the xml node property value ** @ param dom * @ param tagName * @ param attributeName * @ param value * @ return */public static boolean setAttributeValueFromDom (Document dom, string tagName, String attributeName, String value) {boolean result = false; if (dom! = Null & tagName! = Null &&! TagName. trim (). equals ("") & attributeName! = Null &&! AttributeName. trim (). equals ("") {NodeList nodeList = null; Node node = null; nodeList = dom. getElementsByTagName (tagName. trim (); if (nodeList! = Null & nodeList. getLength ()> 0) {/*** there may be multiple nodes defined by tagnames in xml, and the first Node is */node = nodeList. item (0); if (node! = Null) {(Element) node ). setAttribute (attributeName, value); result = true ;}} return result ;} /*** get the corresponding Node value from xml based on the tagName ** @ param dom * @ param tagName * @ return */public static String getNodeValueFromDom (Document dom, String tagName) {String result = ""; try {if (dom! = Null & tagName! = Null &&! TagName. trim (). equals ("") {NodeList nodeList = null; Node node = null; nodeList = XPathAPI. selectNodeList (dom, tagName. trim (); // dom. getElementsByTagName (tagName. trim (); if (nodeList! = Null & nodeList. getLength ()> 0) {/*** there may be multiple nodes defined by tagnames in xml, and the first Node is */node = nodeList. item (0); if (node! = Null) {node = node. getFirstChild (); if (node! = Null) result = node. getNodeValue (); result = null? "": Result. trim () ;}}} catch (Exception e) {System. out. println ("getNodeValueFromDom error =" + e. toString (); e. printStackTrace ();} return result;} public static String getTagValueByTagName (Document dom, String tagName) {String result = ""; try {if (dom! = Null & tagName! = Null &&! TagName. trim (). equals ("") {NodeList nodeList = null; Node node = null; if (dom. getElementsByTagName (tagName. trim ())! = Null) {nodeList = dom. getElementsByTagName (tagName. trim (); if (nodeList. item (0 )! = Null) {node = nodeList. item (0); if (node. getChildNodes (). item (0). getNodeValue ()! = Null) {result = (node. getChildNodes ()). item (0 ). getNodeValue (). trim () ;}}}} catch (Exception e) {System. out. println ("getNodeValueFromDom error =" + e. toString (); e. printStackTrace ();} return result ;}}