读取xml实现封装标签代码,Java代码库,德仔网

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代码分类
【Java】读取xml实现封装标签
作者:freelife / 发布于2013/1/3/ 602
private static final long serialVersionUID = 1L;
	private static String file = "d://dictionary.xml";
	private Map<String, List<DictionaryBean>> xmlMap = null;
	private String table;
	private String field;
	private String initvalue;

	public TextTag() {
		init();
	}
	
	/**
	 * 数据以键值的方式存储
	 */
	private void init() {
		List<DictionaryBean> list = readConfXml();

		if (xmlMap == null) {
			xmlMap = new HashMap<String, List<DictionaryBean>>();
		} else {
			xmlMap.clear();
		}
		for (DictionaryBean dict : list) {
			String key = getMapKey(dict.tableName, dict.fieldName);
			List<DictionaryBean> dictList = xmlMap.get(key);
			if (dictList == null) {
				dictList = new ArrayList<DictionaryBean>();
				xmlMap.put(key, dictList);
			}
			dictList.add(dict);
		}

	}

	/**
	 * 标签
	 */
	public int doStartTag() {
		JspWriter out = pageContext.getOut();
		String results = getInitValue(table, field, initvalue);
		try {
			out.print(results);
		} catch (IOException e) {
			e.printStackTrace();
		}
		return 0;
	}

	/**
	 * 调用
	 * 
	 * @param table
	 * @param field
	 * @param initvalue
	 * @return
	 * @throws DocumentException
	 */
	public String getInitValue(String table, String field, String initvalue) {
		String key = getMapKey(table, field);
		List<DictionaryBean> list = xmlMap.get(key);
		for (DictionaryBean dict : list) {
			if (dict.fieldValue.equals(initvalue)) {
				return dict.valueMean;
			}
		}
		return null;
	}

	/**
	 * 遍历xml符合相应的标签数据
	 * @return List<DictionaryBean>集合
	 * @throws DocumentException
	 */
	public static List<DictionaryBean> readConfXml() {
		List<DictionaryBean> list = new ArrayList<DictionaryBean>();
		Document doc = null;
		try {
			doc = new SAXReader().read(new File(file));
		} catch (DocumentException e) {
			e.printStackTrace();
		}
		Element root = doc.getRootElement();
		for (Iterator it1 = root.elementIterator(); it1.hasNext();) {
			Element tables = (Element) it1.next();
			if (!tables.getName().equals("table"))
				continue;
			String tableName = tables.attribute("id").getValue();
			for (Iterator it2 = tables.elementIterator(); it2.hasNext();) {
				Element fields = (Element) it2.next();
				String fieldName = fields.attribute("id").getValue();
				for (Iterator it3 = fields.elementIterator(); it3.hasNext();) {
					Element items = (Element) it3.next();
					DictionaryBean dict = new DictionaryBean();
					dict.tableName = tableName;
					dict.fieldName = fieldName;
					dict.fieldValue = items.attribute("key").getValue();
					dict.valueMean = items.attribute("value").getValue();
					list.add(dict);
				}
			}
		}
		return list;
	}

	/**
	 * 制定key值
	 * @param tableName
	 * @param fieldName
	 * @return 组合的key值
	 */
	public static String getMapKey(String tableName, String fieldName) {
		return (tableName == null ? ""
				: tableName + "-" + fieldName == null ? "" : fieldName);
	}

	public String getTable() {
		return table;
	}

	public void setTable(String table) {
		this.table = table;
	}

	public String getField() {
		return field;
	}

	public void setField(String field) {
		this.field = field;
	}

	public String getInitvalue() {
		return initvalue;
	}

	public void setInitvalue(String initvalue) {
		this.initvalue = initvalue;
	}
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