換行但是沒有縮進。。。這個要怎么辦？ 如何在已有的xml文件中，再加一個book子節點？
<?xml?version="1.0"?encoding="UTF-8"?> <bookstore> <book?id="1"> <name>冰與火之歌</name> <author>喬治馬丁</author> <language>English</language> <price>109.9</price> </book> <book??id="2"> <name>安徒生童話</name> <author>安徒生</author> <language>Chinese</language> <price>59.0</price> </book> </bookstore> /*?想在上面的xml內容中在加入一個book子節點，我應該怎么做？?*/
2015-02-27
至于通過代碼增加結點，可以參照：http://www.xianlaiwan.cn/qadetail/66706
2015-02-27
@da丶萌萌噠
如果是DOM4J的話，可以采用這種PrettyPrint
2014-12-31
@da丶萌萌噠
<?xml?version="1.0"?encoding="UTF-8"?>
<bookstore>
????<book?id="1">
????????<name>冰與火之歌</name>
????????<author>喬治馬丁</author>
????????<language>English</language>
????????<price>109.9</price>
????</book>
????<book??id="2">
????????<name>安徒生童話</name>
????????<author>安徒生</author>
????????<language>Chinese</language>
????????<price>59.0</price>
????</book>
????<book??id="3">
????????<name>第三本書</name>
????????<author>某某某</author>
????????<language>Chinese</language>
????????<price>444</price>
????</book>
</bookstore>
這樣就增加了一本書。
換行敲回車鍵，縮進的話敲空格或者tab鍵都可以哦~！
2016-04-23
package?com.imooc.domtest.test; import?java.io.File; import?java.io.FileOutputStream; import?java.io.OutputStream; import?java.util.ArrayList; import?java.util.Scanner; import?javax.xml.parsers.DocumentBuilder; import?javax.xml.parsers.DocumentBuilderFactory; import?javax.xml.parsers.ParserConfigurationException; import?javax.xml.transform.OutputKeys; import?javax.xml.transform.Result; import?javax.xml.transform.Transformer; import?javax.xml.transform.TransformerConfigurationException; import?javax.xml.transform.TransformerException; import?javax.xml.transform.TransformerFactory; import?javax.xml.transform.dom.DOMSource; import?javax.xml.transform.stream.StreamResult; import?org.w3c.dom.Document; import?org.w3c.dom.Element; public?class?CreateXML?{ public?DocumentBuilder?getDocumentBuilder(){ //?創建一個DocumentBuilderFactory的對象 DocumentBuilderFactory?dbf?=?DocumentBuilderFactory.newInstance(); //?創建DocumentBuilder對象 DocumentBuilder?db?=null; try?{ db?=?dbf.newDocumentBuilder(); }?catch?(ParserConfigurationException?e)?{ e.printStackTrace(); } return?db; } /** ?*?生成xml ?*/ public?void?createXML(){ Scanner?in?=new?Scanner(System.in); DocumentBuilder?db?=?getDocumentBuilder(); Document?document?=?db.newDocument(); document.setXmlStandalone(true); Element?bookstore?=?document.createElement("bookStore"); System.out.print("創建多少本書？："); //向bookstore根節點中添加子節點book int?n=in.nextInt(); for(int?i=0;i<n;i++){ ArrayList<Element>?elements=new?ArrayList<Element>(); Element?book?=?document.createElement("book"); Element?name?=?document.createElement("name"); Element?price?=?document.createElement("price"); Element?language?=?document.createElement("language"); Element?year?=?document.createElement("year"); elements.add(name); elements.add(price); elements.add(language); elements.add(year); // name.setNodeValue("小王子"); System.out.println("---------第"+(i+1)+"本書--------"); System.out.println("input?the?"+(i+1)+"?book?id"); String?id=in.next(); book.setAttribute("id",?id); for(int?j=0;j<elements.size();j++){ System.out.println("input?the"+(i+1)+"?book?"+elements.get(j).getNodeName()); String?str=in.next(); elements.get(j).setTextContent(str); book.appendChild(elements.get(j)); } //將book節點添加到bookstore根節點中 bookstore.appendChild(book); } //將bookstore節點（已經包含了book）添加到dom樹中 document.appendChild(bookstore); //創建TransformerFactory對象 TransformerFactory?tff?=?TransformerFactory.newInstance(); try?{ //創建Transformer對象 Transformer?tf?=?tff.newTransformer(); tf.setOutputProperty(OutputKeys.INDENT,?"yes"); tf.setOutputProperty("{http://xml.apache.org/xslt}indent-amount",?"4"); tf.transform(new?DOMSource(document),new?StreamResult(new?File("books1.xml"))); }?catch?(TransformerConfigurationException?e)?{ e.printStackTrace(); }?catch?(TransformerException?e)?{ e.printStackTrace(); } } public?static?void?main(String[]?args)?{ CreateXML?creatXml?=?new?CreateXML(); creatXml.createXML(); } }2016-04-23
```
package com.imooc.domtest.test;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Scanner;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Result;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
public class CreateXML {
public DocumentBuilder getDocumentBuilder(){
// 創建一個DocumentBuilderFactory的對象
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
// 創建DocumentBuilder對象
DocumentBuilder db =null;
try {
db = dbf.newDocumentBuilder();
} catch (ParserConfigurationException e) {
e.printStackTrace();
}
return db;
}
/**
* 生成xml
*/
public void createXML(){
Scanner in =new Scanner(System.in);
DocumentBuilder db = getDocumentBuilder();
Document document = db.newDocument();
document.setXmlStandalone(true);
Element bookstore = document.createElement("bookStore");
System.out.print("創建多少本書？：");
//向bookstore根節點中添加子節點book
int n=in.nextInt();
for(int i=0;i<n;i++){
ArrayList<Element> elements=new ArrayList<Element>();
Element book = document.createElement("book");
Element name = document.createElement("name");
Element price = document.createElement("price");
Element language = document.createElement("language");
Element year = document.createElement("year");
elements.add(name);
elements.add(price);
elements.add(language);
elements.add(year);
// name.setNodeValue("小王子");
System.out.println("---------第"+(i+1)+"本書--------");
System.out.println("input the "+(i+1)+" book id");
String id=in.next();
book.setAttribute("id", id);
for(int j=0;j<elements.size();j++){
System.out.println("input the"+(i+1)+" book "+elements.get(j).getNodeName());
String str=in.next();
elements.get(j).setTextContent(str);
book.appendChild(elements.get(j));
}
//將book節點添加到bookstore根節點中
bookstore.appendChild(book);
}
//將bookstore節點（已經包含了book）添加到dom樹中
document.appendChild(bookstore);
//創建TransformerFactory對象
TransformerFactory tff = TransformerFactory.newInstance();
try {
//創建Transformer對象
Transformer tf = tff.newTransformer();
tf.setOutputProperty(OutputKeys.INDENT, "yes");
tf.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
tf.transform(new DOMSource(document),new StreamResult(new File("books1.xml")));
} catch (TransformerConfigurationException e) {
e.printStackTrace();
} catch (TransformerException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
CreateXML creatXml = new CreateXML();
creatXml.createXML();
}
}
```