String 和 document 的相互转换总结

获取xml中某一节点内容: 

public static String getValueByTagName(Document doc, String tagName){
		if(doc == null || StringUtil.isNull(tagName)){
			return "";
		}
		NodeList pl = doc.getElementsByTagName(tagName);
		if(pl != null && pl.getLength() > 0){
			return StringUtil.dealParam(StringUtil.convertNull( pl.item(0).getTextContent()));
		}
		return "";
	}

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转载自blog.csdn.net/xiao1_1bing/article/details/82814307