Java/XML/DOM Search
Содержание
- 1 Finds and returns the first child element node.
- 2 Finds and returns the first child node with the given name.
- 3 Finds and returns the first child node with the given name and attribute name, value pair.
- 4 Finds and returns the first child node with the given qualified name.
- 5 Finds and returns the last child element node.
- 6 Finds and returns the last child node with the given name.
- 7 Finds and returns the last child node with the given name and attribute name, value pair.
- 8 Finds and returns the last child node with the given qualified name.
- 9 Finds and returns the next sibling element node.
- 10 Finds and returns the next sibling node with the given name.
- 11 Finds and returns the next sibling node with the given name and attribute name, value pair.
- 12 Finds and returns the next sibling node with the given qualified name.
- 13 Get parent
Finds and returns the first child element node.
<source lang="java">
import org.w3c.dom.Element; import org.w3c.dom.Node; /*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
public class Main {
/** Finds and returns the first child element node. */
public static Element getFirstChildElement(Node parent) {
// search for node
Node child = parent.getFirstChild();
while (child != null) {
if (child.getNodeType() == Node.ELEMENT_NODE) {
return (Element)child;
}
child = child.getNextSibling();
}
// not found
return null;
} // getFirstChildElement(Node):Element
}
</source>
Finds and returns the first child node with the given name.
<source lang="java">
import org.w3c.dom.Element; import org.w3c.dom.Node; /*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
public class Main {
/** Finds and returns the first child node with the given name. */
public static Element getFirstChildElement(Node parent, String elemNames[]) {
// search for node
Node child = parent.getFirstChild();
while (child != null) {
if (child.getNodeType() == Node.ELEMENT_NODE) {
for (int i = 0; i < elemNames.length; i++) {
if (child.getNodeName().equals(elemNames[i])) {
return (Element)child;
}
}
}
child = child.getNextSibling();
}
// not found
return null;
} // getFirstChildElement(Node,String[]):Element
}
</source>
Finds and returns the first child node with the given name and attribute name, value pair.
<source lang="java">
import org.w3c.dom.Element; import org.w3c.dom.Node; /*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
public class Main {
/**
* Finds and returns the first child node with the given name and
* attribute name, value pair.
*/
public static Element getFirstChildElement(Node parent,
String elemName,
String attrName,
String attrValue) {
// search for node
Node child = parent.getFirstChild();
while (child != null) {
if (child.getNodeType() == Node.ELEMENT_NODE) {
Element element = (Element)child;
if (element.getNodeName().equals(elemName) &&
element.getAttribute(attrName).equals(attrValue)) {
return element;
}
}
child = child.getNextSibling();
}
// not found
return null;
} // getFirstChildElement(Node,String,String,String):Element
}
</source>
Finds and returns the first child node with the given qualified name.
<source lang="java">
import org.w3c.dom.Element; import org.w3c.dom.Node; /*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
public class Main {
/** Finds and returns the first child node with the given qualified name. */
public static Element getFirstChildElementNS(Node parent,
String[][] elemNames) {
// search for node
Node child = parent.getFirstChild();
while (child != null) {
if (child.getNodeType() == Node.ELEMENT_NODE) {
for (int i = 0; i < elemNames.length; i++) {
String uri = child.getNamespaceURI();
if (uri != null && uri.equals(elemNames[i][0]) &&
child.getLocalName().equals(elemNames[i][1])) {
return (Element)child;
}
}
}
child = child.getNextSibling();
}
// not found
return null;
} // getFirstChildElementNS(Node,String[][]):Element
}
</source>
Finds and returns the last child element node.
<source lang="java">
import org.w3c.dom.Element; import org.w3c.dom.Node; /*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
public class Main {
/** Finds and returns the last child element node.
* Overload previous method for non-Xerces node impl.
*/
public static Element getLastChildElement(Node parent) {
// search for node
Node child = parent.getLastChild();
while (child != null) {
if (child.getNodeType() == Node.ELEMENT_NODE) {
return (Element)child;
}
child = child.getPreviousSibling();
}
// not found
return null;
} // getLastChildElement(Node):Element
}
</source>
Finds and returns the last child node with the given name.
<source lang="java">
import org.w3c.dom.Element; import org.w3c.dom.Node; /*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
public class Main {
/** Finds and returns the last child node with the given name. */
public static Element getLastChildElement(Node parent, String elemNames[]) {
// search for node
Node child = parent.getLastChild();
while (child != null) {
if (child.getNodeType() == Node.ELEMENT_NODE) {
for (int i = 0; i < elemNames.length; i++) {
if (child.getNodeName().equals(elemNames[i])) {
return (Element)child;
}
}
}
child = child.getPreviousSibling();
}
// not found
return null;
} // getLastChildElement(Node,String[]):Element
}
</source>
Finds and returns the last child node with the given name and attribute name, value pair.
<source lang="java">
import org.w3c.dom.Element; import org.w3c.dom.Node; /*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
public class Main {
/**
* Finds and returns the last child node with the given name and
* attribute name, value pair.
*/
public static Element getLastChildElement(Node parent,
String elemName,
String attrName,
String attrValue) {
// search for node
Node child = parent.getLastChild();
while (child != null) {
if (child.getNodeType() == Node.ELEMENT_NODE) {
Element element = (Element)child;
if (element.getNodeName().equals(elemName) &&
element.getAttribute(attrName).equals(attrValue)) {
return element;
}
}
child = child.getPreviousSibling();
}
// not found
return null;
} // getLastChildElement(Node,String,String,String):Element
}
</source>
Finds and returns the last child node with the given qualified name.
<source lang="java">
import org.w3c.dom.Element; import org.w3c.dom.Node; /*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
public class Main {
/** Finds and returns the last child node with the given qualified name. */
public static Element getLastChildElementNS(Node parent,
String[][] elemNames) {
// search for node
Node child = parent.getLastChild();
while (child != null) {
if (child.getNodeType() == Node.ELEMENT_NODE) {
for (int i = 0; i < elemNames.length; i++) {
String uri = child.getNamespaceURI();
if (uri != null && uri.equals(elemNames[i][0]) &&
child.getLocalName().equals(elemNames[i][1])) {
return (Element)child;
}
}
}
child = child.getPreviousSibling();
}
// not found
return null;
} // getLastChildElementNS(Node,String[][]):Element
}
</source>
Finds and returns the next sibling element node.
<source lang="java">
import org.w3c.dom.Element; import org.w3c.dom.Node; /*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
public class Main {
/** Finds and returns the next sibling element node. */
public static Element getNextSiblingElement(Node node) {
// search for node
Node sibling = node.getNextSibling();
while (sibling != null) {
if (sibling.getNodeType() == Node.ELEMENT_NODE) {
return (Element)sibling;
}
sibling = sibling.getNextSibling();
}
// not found
return null;
} // getNextSiblingElement(Node):Element
}
</source>
Finds and returns the next sibling node with the given name.
<source lang="java">
import org.w3c.dom.Element; import org.w3c.dom.Node; /*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
public class Main {
/** Finds and returns the next sibling node with the given name. */
public static Element getNextSiblingElement(Node node, String elemNames[]) {
// search for node
Node sibling = node.getNextSibling();
while (sibling != null) {
if (sibling.getNodeType() == Node.ELEMENT_NODE) {
for (int i = 0; i < elemNames.length; i++) {
if (sibling.getNodeName().equals(elemNames[i])) {
return (Element)sibling;
}
}
}
sibling = sibling.getNextSibling();
}
// not found
return null;
} // getNextSiblingdElement(Node,String[]):Element
}
</source>
Finds and returns the next sibling node with the given name and attribute name, value pair.
<source lang="java">
import org.w3c.dom.Element; import org.w3c.dom.Node; /*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
public class Main {
/**
* Finds and returns the next sibling node with the given name and
* attribute name, value pair. Since only elements have attributes,
* the node returned will be of type Node.ELEMENT_NODE.
*/
public static Element getNextSiblingElement(Node node,
String elemName,
String attrName,
String attrValue) {
// search for node
Node sibling = node.getNextSibling();
while (sibling != null) {
if (sibling.getNodeType() == Node.ELEMENT_NODE) {
Element element = (Element)sibling;
if (element.getNodeName().equals(elemName) &&
element.getAttribute(attrName).equals(attrValue)) {
return element;
}
}
sibling = sibling.getNextSibling();
}
// not found
return null;
} // getNextSiblingElement(Node,String,String,String):Element
}
</source>
Finds and returns the next sibling node with the given qualified name.
<source lang="java">
import org.w3c.dom.Element; import org.w3c.dom.Node; /*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
public class Main {
/** Finds and returns the next sibling node with the given qualified name. */
public static Element getNextSiblingElementNS(Node node,
String[][] elemNames) {
// search for node
Node sibling = node.getNextSibling();
while (sibling != null) {
if (sibling.getNodeType() == Node.ELEMENT_NODE) {
for (int i = 0; i < elemNames.length; i++) {
String uri = sibling.getNamespaceURI();
if (uri != null && uri.equals(elemNames[i][0]) &&
sibling.getLocalName().equals(elemNames[i][1])) {
return (Element)sibling;
}
}
}
sibling = sibling.getNextSibling();
}
// not found
return null;
} // getNextSiblingdElementNS(Node,String[][]):Element
}
</source>
Get parent
<source lang="java">
import org.w3c.dom.Element; import org.w3c.dom.Node;
public class Main {
public static Element getParent(Element elem) {
Node parent = elem.getParentNode();
if (parent instanceof Element)
return (Element)parent;
return null;
} // getParent(Element):Element
}
</source>
