dom4j解析XML

[r5432vb45b4364b654]

Document xmlDoc = new XPPReader().read(new ByteArrayInputStream(xml.getBytes()));

Multiple annotations found at this line:
- The method read(InputStream) from the type XPPReader refers to the missing type
XmlPullParserException
- The type org.gjt.xpp.XmlPullParserException cannot be resolved. It is indirectly
referenced from required .class files

[leehuat]

   read返回类型不匹配， 你强制转化下

[qysnowqy]

一楼的意思该是这样吧？

Document xmlDoc = (Document )new XPPReader().read(new ByteArrayInputStream(xml.getBytes()));

楼主为什么不用SAX解析获取documnt对象呢？

[清晨v]

  Document doc=DocmentHelper.parse(xml);//这样不可以吗？

[r5432vb45b4364b654]

这样概括性的回答我理解不了

[lovebaylong]

贴两段dom4j操作xml代码供参考啊，别笑话啊，只希望对LZ有帮助！个人感觉dom4j的API操作还是很方便与容易的。
1、dom4j解析XML

/**
	 * 解析二维简单格式的信息类型内容格式定义XML
	 * 
	 * @param xmlSchema
	 * @return
	 */
	private SimpleMultiFieldDefine parseSimpleXmlSchemaByXmlString(String xmlSchema) {
		Document doc = null;
		SimpleMultiFieldDefine simpleDefine = null;
		List<SimpleFieldPojo> allFields = null;
		try {
			// 将字符串转换成文档对象
			doc = DocumentHelper.parseText(xmlSchema);
			// 获取根节点
			Element root = doc.getRootElement();
			simpleDefine = new SimpleMultiFieldDefine();

			// 获取消息类型节点
			String typeId = root.element(SystemConstants.XML_FIELDNAME_TYPEID).getTextTrim();
			simpleDefine.setTypeId(typeId);

			// 获取消息名称节点
			String typeName = root.element(SystemConstants.XML_FIELDNAME_TYPENAME).getTextTrim();
			simpleDefine.setTypeName(typeName);

			// 循环遍历获取所有field字段
			allFields = new ArrayList<SimpleFieldPojo>();
			for (Iterator fields = root.elementIterator(SystemConstants.XML_FIELDNAME_FIELD); fields.hasNext();) {
				Element element = (Element) fields.next();
				String field_id = element.elementTextTrim(SystemConstants.XML_FIELDNAME_FIELD_ID);
				String field_name = element.elementTextTrim(SystemConstants.XML_FIELDNAME_FIELD_NAME);
				String field_type = element.elementTextTrim(SystemConstants.XML_FIELDNAME_FIELD_TYPE);

				SimpleFieldPojo field = new SimpleFieldPojo(field_id, field_name, field_type);
				allFields.add(field);
			}

			simpleDefine.setAllFields(allFields);
		} catch (DocumentException e) {
			return null;
		}
		return simpleDefine;
	}

2、dom4j组装XML

/**
	 * 简单消息 根据定义格式与内容组装成infoDetail对应的XML字符串
	 * 
	 * @param allFields：定义格式
	 * @param infoDetails：内容字段
	 * @return
	 */
	private String getSimpleInfoDetailByDefineAndCpInfo(String infoId, String typeId, String typeName, List<SimpleFieldPojo> allFields,
	        String[] infoDetails) {
		Document infoDetail = null;
		imageFileMap = null;
		try {
			infoDetail = DocumentHelper.createDocument();
			infoDetail.setXMLEncoding(SystemConstants.XML_ENCODING);
			// 创建根结点
			Element root = infoDetail.addElement(SystemConstants.SIMPLEXML_FIELDNAME_ROOT);

			// 为根结点添加信息编号id节点
			Element id = root.addElement(SystemConstants.XML_FIELDNAME_FIELD_ID);
			id.setText(infoId);

			// 为根结点添加信息类型编号typeid节点
			Element typeid = root.addElement(SystemConstants.XML_FIELDNAME_TYPEID);
			typeid.setText(typeId);

			// 为根结点添加信息类型名称typename节点
			Element typename = root.addElement(SystemConstants.XML_FIELDNAME_TYPENAME);
			typename.setText(typeName);

			// 循环遍历添加每个field字段
			for (int index = 0; index < allFields.size(); index++) {
				Element field = root.addElement(SystemConstants.XML_FIELDNAME_FIELD);
				String fieldText = infoDetails[index + 1];// 字段内容

				SimpleFieldPojo eachField = allFields.get(index);
				String fieldType = eachField.getType();// 字段类型

				// 判断字段类型是否是图片，如果是图片类型，要将原来的图片名称转换成新图片名称用于排除重名问题
				if (SystemConstants.IMAGE_TYPE_FLAG.equalsIgnoreCase(fieldType)) {

					if (imageFileMap == null) {
						imageFileMap = new TreeMap<String, String>();
					}
					String newImageFileName = null;
					// 将新旧文件名以键值对保存到集合中
					if (fieldText != null && !fieldText.trim().equals("")) {
						fieldText = fieldText.trim();
						// 如果原来不存在该图片名称，才添加进去，如果是重名的图片则不再添加，只需上传一个就行了。
						if (!imageFileMap.containsKey(fieldText)) {
							newImageFileName = Utils.transformImageFileName(fieldText);
							imageFileMap.put(fieldText, newImageFileName);
						}else{
							newImageFileName = imageFileMap.get(fieldText);
						}
						if (newImageFileName != null)
							fieldText = newImageFileName;
					}
				}

				field.setText(fieldText);

				field.addAttribute(SystemConstants.XML_FIELDNAME_FIELD_ID, eachField.getId());
				field.addAttribute(SystemConstants.XML_FIELDNAME_FIELD_NAME, eachField.getName());
				field.addAttribute(SystemConstants.XML_FIELDNAME_FIELD_TYPE, fieldType);
			}
			
			
		} catch (RuntimeException e) {
			e.printStackTrace();
			return SystemConstants.PARSEXML_EXCEPTION_CODE;
		}
		return infoDetail.asXML();
	}

[Rainness_Zhang]

实际，强制类型转换依然没有解决问题