Here you can find the source of getAttribute(Element el, String attrName)
| Parameter | Description |
|---|---|
| el | Element whose attrib is looked for |
| attrName | name of attribute to look for |
static public String getAttribute(Element el, String attrName)
//package com.java2s; /**// www . j av a2 s.c om * 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. */ import java.util.List; import org.w3c.dom.Attr; import org.w3c.dom.Element; public class Main { /** * Returns the value of an attribute of an element. Returns null * if the attribute is not found (whereas Element.getAttribute * returns "" if an attrib is not found). This method should be * used for elements that support extension attributes because it * does not track unexpected attributes. * * @param el Element whose attrib is looked for * @param attrName name of attribute to look for * @return the attribute value including prefix if present */ static public String getAttribute(Element el, String attrName) { String sRet = null; Attr attr = el.getAttributeNode(attrName); if (attr != null) { sRet = attr.getValue(); } return sRet; } /** * Returns the value of an attribute of an element. Returns null * if the attribute is not found (whereas Element.getAttribute * returns "" if an attrib is not found). This method should be * used for elements that do not support extension attributes * because it tracks the element's remaining attributes so that * eventually any unexpected attributes can be identified. * * @param el Element whose attrib is looked for * @param attrName name of attribute to look for * @param remainingAttrs List of remaining attributes * @return the attribute value */ static public String getAttribute(Element el, String attrName, List remainingAttrs) { String sRet = null; Attr attr = el.getAttributeNode(attrName); if (attr != null) { sRet = attr.getValue(); remainingAttrs.remove(attr); } return sRet; } }