XML檔案處理工具類 ---XMLUtils
阿新 • • 發佈:2019-01-02
package com.jeeplus.mobile.utils;
import java.io.InputStream;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.Map;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* @ClassName: XMLUtils
* @Description: XML檔案處理工具類
* @author
* @date 2017年3月10日 下午12:50:35
*/
public class XMLUtils{
private static String RT = "\r\n";
/**
* @Title:simpleMapToXml
* @Description:map轉為簡單的xml檔案字串(一級節點)
* @param map
* @return String 返回型別
*/
public static String simpleMapToXml(Map<String, Object> map){
StringBuilder xmlString = new StringBuilder();
xmlString.append("<?xml version='1.0' encoding='UTF-8'?>").append(RT);
xmlString.append("<xml>").append(RT);
for (Map.Entry<String, Object> entry : map.entrySet()){
String key = entry.getKey();
xmlString.append("<" + key + ">" + entry.getValue() + "</" + key + ">").append(RT);
}
xmlString.append("</xml>").append(RT);
return xmlString.toString();
}
public static Map<String, Object> getMapFromXML(String xmlString) throws Exception{
// 這裡用Dom的方式解析回包的最主要目的是防止API新增回包欄位
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
InputStream is = Util.getStringStream(xmlString);
Document document = builder.parse(is);
// 獲取到document裡面的全部結點
NodeList allNodes = document.getFirstChild().getChildNodes();
Node node;
Map<String, Object> map = new HashMap<String, Object>();
int i = 0;
while (i < allNodes.getLength()){
node = allNodes.item(i);
if (node instanceof Element){
map.put(node.getNodeName(), node.getTextContent());
}
i++;
}
return map;
}
/**
* 將物件直接轉換成String型別的 XML輸出
*
* @param obj
* @return
*/
public static String convertToXml(Object obj) {
// 建立輸出流
StringWriter sw = new StringWriter();
try {
// 利用jdk中自帶的轉換類實現
JAXBContext context = JAXBContext.newInstance(obj.getClass());
Marshaller marshaller = context.createMarshaller();
// 格式化xml輸出的格式
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT,
Boolean.TRUE);
// 將物件轉換成輸出流形式的xml
marshaller.marshal(obj, sw);
} catch (JAXBException e) {
e.printStackTrace();
}
return sw.toString();
}
/**
* 將String型別的xml轉換成物件
*/
public static Object convertXmlStrToObject(Class clazz, String xmlStr) {
Object xmlObject = null;
try {
JAXBContext context = JAXBContext.newInstance(clazz);
// 進行將Xml轉成物件的核心介面
Unmarshaller unmarshaller = context.createUnmarshaller();
StringReader sr = new StringReader(xmlStr);
xmlObject = unmarshaller.unmarshal(sr);
} catch (JAXBException e) {
e.printStackTrace();
}
return xmlObject;
}
}
import java.io.InputStream;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.Map;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* @ClassName: XMLUtils
* @Description: XML檔案處理工具類
* @author
* @date 2017年3月10日 下午12:50:35
*/
public class XMLUtils{
private static String RT = "\r\n";
/**
* @Title:simpleMapToXml
* @Description:map轉為簡單的xml檔案字串(一級節點)
* @param map
* @return String 返回型別
*/
public static String simpleMapToXml(Map<String, Object> map){
StringBuilder xmlString = new StringBuilder();
xmlString.append("<?xml version='1.0' encoding='UTF-8'?>").append(RT);
xmlString.append("<xml>").append(RT);
for (Map.Entry<String, Object> entry : map.entrySet()){
String key = entry.getKey();
xmlString.append("<" + key + ">" + entry.getValue() + "</" + key + ">").append(RT);
}
xmlString.append("</xml>").append(RT);
return xmlString.toString();
}
public static Map<String, Object> getMapFromXML(String xmlString) throws Exception{
// 這裡用Dom的方式解析回包的最主要目的是防止API新增回包欄位
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
InputStream is = Util.getStringStream(xmlString);
Document document = builder.parse(is);
// 獲取到document裡面的全部結點
NodeList allNodes = document.getFirstChild().getChildNodes();
Node node;
Map<String, Object> map = new HashMap<String, Object>();
int i = 0;
while (i < allNodes.getLength()){
node = allNodes.item(i);
if (node instanceof Element){
map.put(node.getNodeName(), node.getTextContent());
}
i++;
}
return map;
}
/**
* 將物件直接轉換成String型別的 XML輸出
*
* @param obj
* @return
*/
public static String convertToXml(Object obj) {
// 建立輸出流
StringWriter sw = new StringWriter();
try {
// 利用jdk中自帶的轉換類實現
JAXBContext context = JAXBContext.newInstance(obj.getClass());
Marshaller marshaller = context.createMarshaller();
// 格式化xml輸出的格式
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT,
Boolean.TRUE);
// 將物件轉換成輸出流形式的xml
marshaller.marshal(obj, sw);
} catch (JAXBException e) {
e.printStackTrace();
}
return sw.toString();
}
/**
* 將String型別的xml轉換成物件
*/
public static Object convertXmlStrToObject(Class clazz, String xmlStr) {
Object xmlObject = null;
try {
JAXBContext context = JAXBContext.newInstance(clazz);
// 進行將Xml轉成物件的核心介面
Unmarshaller unmarshaller = context.createUnmarshaller();
StringReader sr = new StringReader(xmlStr);
xmlObject = unmarshaller.unmarshal(sr);
} catch (JAXBException e) {
e.printStackTrace();
}
return xmlObject;
}
}