dom4j解析XML简单方法
<?xml version="1.0" encoding="UTF-8"?> <data> <message> <status>0</status> <value>处理成功</value> </message> <policeCheckInfos> <policeCheckInfo name="李佳" id="325826128609280830"> <message> <status>0</status> <value>查询成功</value> </message> <name desc="姓名">李佳</name> <identitycard desc="身份证号">325826128609280830</identitycard> <compStatus desc="比对状态">3</compStatus> <compResult desc="比对结果">一致</compResult> <checkPhoto desc="照片">
/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0a HBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL/2wBDAQkJCQwLDBgNDRgyIRwhMjIyMjIy I60GNSfOQyBVT5m/ee1QCFQ/c8UNzUj/AHDWhmQyIkY+6KdDbLN+8yR9KSA+YPmqbH+j4pEDREzH 5W/Omkyg9j9BT06VJ/yzpouxB50n/PD+VFWh0opDsf/Z</checkPhoto> <no desc="唯一标识" /> </policeCheckInfo> </policeCheckInfos> </data>
解析后放入HashMap中供调用
/*
* 接口返回XML，得到HaspMap
*/
public static HashMap AnalyticXML(String xml){
HashMap<String,String> hm = new HashMap<String,String>();
try {
// 读取并解析XML文档
// SAXReader就是一个管道，用一个流的方式，把xml文件读出来
// SAXReader reader = new SAXReader(); //User.hbm.xml表示你要解析的xml文档
// Document document = reader.read(new File("User.hbm.xml"));
Document doc = DocumentHelper.parseText(xml); //加载XML字符串，得到Document对象
Element root=doc.getRootElement(); //获得根节点
Node processStatus = doc.selectSingleNode("/data/message/status");
String ProcessStatus = processStatus.getText(); //处理结果码
Node processValue = doc.selectSingleNode("/data/message/value");
String ProcessValue = processValue.getText(); //处理结果描述
hm.put("ProcessStatus", ProcessStatus);
hm.put("ProcessValue", ProcessValue);
if(ProcessStatus.equals("0")){
List policeCheckInfoList = (List)doc.selectNodes("/data/policeCheckInfos/policeCheckInfo");
for(int i=0;i<policeCheckInfoList.size();i++){
Element policeCheckInfo = (Element)policeCheckInfoList.get(i);
String CheckName = policeCheckInfo.attributeValue("name"); //请求认证的人员姓名
String CheckId = policeCheckInfo.getTextTrim(); //请求认证的人员证件号
hm.put("CheckName", CheckName);
hm.put("CheckId", CheckId);
Element queryStatus = (Element)doc.selectSingleNode("/data/policeCheckInfos/policeCheckInfo/message/status");
String QueryStatus = queryStatus.getTextTrim(); //查询结果码
Element queryValue = (Element)doc.selectSingleNode("/data/policeCheckInfos/policeCheckInfo/message/value");
String QueryValue = queryValue.getTextTrim(); //查询结果描述
hm.put("QueryStatus", QueryStatus);
hm.put("QueryValue", QueryValue);
Element eleName = (Element)doc.selectSingleNode("/data/policeCheckInfos/policeCheckInfo/name");
String NameN = eleName.attributeValue("desc"); //认证反馈姓名描述
String NameV = eleName.getTextTrim(); //认证反馈姓名值
hm.put("NameN", NameN);
hm.put("NameV", NameV);
Element eleIdentityCard = (Element)doc.selectSingleNode("/data/policeCheckInfos/policeCheckInfo/identitycard");
String IdentityCardN = eleIdentityCard.attributeValue("desc"); //认证反馈身份证号描述
String IdentityCardV = eleIdentityCard.getTextTrim(); //认证反馈身份证号值
hm.put("IdentityCardN", IdentityCardN);
hm.put("IdentityCardV", IdentityCardV);
Element eleCompStatus = (Element)doc.selectSingleNode("/data/policeCheckInfos/policeCheckInfo/compStatus");
String CompStatusN = eleCompStatus.attributeValue("desc"); //认证反馈比对状态描述
String CompStatusV = eleCompStatus.getTextTrim(); //认证反馈比对状态号值
hm.put("CompStatusN", CompStatusN);
hm.put("CompStatusV", CompStatusV);
Element eleCompResult = (Element)doc.selectSingleNode("/data/policeCheckInfos/policeCheckInfo/compResult");
String CompResultN = eleCompResult.attributeValue("desc"); //认证反馈比对结果描述
String CompResultV = eleCompResult.getTextTrim(); //认证反馈比对结果值
hm.put("CompResultN", CompResultN);
hm.put("CompResultV", CompResultV);
String CheckPhotoN = "";
String CheckPhotoV = "";
if(CompStatusV.equals("3")){
Element eleCheckPhoto = (Element)doc.selectSingleNode("/data/policeCheckInfos/policeCheckInfo/checkPhoto");
CheckPhotoN = eleCheckPhoto.attributeValue("desc"); //认证反馈照片描述
CheckPhotoV = eleCheckPhoto.getTextTrim(); //认证反馈照片值
hm.put("CheckPhotoN", CheckPhotoN);
hm.put("CheckPhotoV", CheckPhotoV);
}
Element eleNo = (Element)doc.selectSingleNode("/data/policeCheckInfos/policeCheckInfo/no");
String NoN = eleNo.attributeValue("desc"); //认证反馈唯一标识描述
String NoV = eleNo.getTextTrim(); //认证反馈唯一标识值
hm.put("NoN", NoN);
hm.put("NoV", NoV);
}
}else{
hm.put("CheckName", "");
hm.put("CheckId", "");
hm.put("QueryStatus", "");
hm.put("QueryValue", "");
hm.put("NameN", "");
hm.put("NameV", "");
hm.put("IdentityCardN", "");
hm.put("IdentityCardV", "");
hm.put("CompStatusN", "");
hm.put("CompStatusV", "");
hm.put("CompResultN", "");
hm.put("CompResultV", "");
hm.put("CheckPhotoN", "");
hm.put("CheckPhotoV", "");
hm.put("NoN", "");
hm.put("NoV", "");
}
} catch (DocumentException e) {
e.printStackTrace();
}
return hm;
}
小结：
1).获取 doc
Node processStatus = doc.selectSingleNode("/data/message/status");
Element eleName = (Element)doc.selectSingleNode("/data/policeCheckInfos/policeCheckInfo/name");
获得 doc 后，即可用 selectSingleNode 方法加层次路径获取 Node 或 Element；
2).获得 属性值和参数值
String CheckName = policeCheckInfo.attributeValue("name");
获得了 Node 或 Element 后，可使用 attributeValue 方法获得属性值；
String CheckId = policeCheckInfo.getTextTrim();
获得了 Node 或 Element 后，可使用 getTextTrim 方法获得参数值；
3).当内部有多组参数时，借助List，使用 selectNodes 方法
List policeCheckInfoList = (List)doc.selectNodes("/data/policeCheckInfos/policeCheckInfo");
for(int i=0;i<policeCheckInfoList.size();i++){
Element policeCheckInfo = (Element)policeCheckInfoList.get(i); //获取此层次的属性值
Element queryStatus = (Element)doc.selectSingleNode("/data/policeCheckInfos/policeCheckInfo/message/status");//
}
与获取子节点寻找父节点的方法相比，上述方法直观简便。我觉得更好用。