- 步骤
1.通过DocumentHelper生成一个Document对象
2.添加根元素
3.为根元素添加子元素
4.为某个元素添加属性,(可有可无)
5.给某个元素添加子元素(这个可以迭代完成)
6.给子元素添加文本信息
7.将Document对象的内容输出到一个文件中,并命名为XML文件,
package bjsxt.xml;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
public class WriteXML {
public static void main(String[] args) throws IOException
{
//使用DocumentHelper创建一个Document对象
Document doc = DocumentHelper.createDocument();
//添加并得到根元素
Element root = doc.addElement("books");
//为根元素添加子元素
Element book = root.addElement("book");
//为子元素添加属性
book.addAttribute("id", "b01");
//为book添加子元素
Element name = book.addElement("name");
Element author = book.addElement("author");
Element price = book.addElement("price");
//为子元素添加文本信息
name.addText("Think in Java");
author.addText("MIKE");
price.addText("20.5");
//将Document对象的内容写入到一个文件中
Writer write = new FileWriter(new File("src/book1.xml"));
doc.write(write);
//关闭流
write.close();
}
}
运行结果:
<?xml version="1.0" encoding="UTF-8"?>
<books><book id="b01"><name>Think in Java</name><author>MIKE</author><price>20.5</price></book></books>
由于以上结果的结构是不太美好,所以在输出到文件中的过程中需要修改,即以下代码
package bjsxt.xml;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import java.sql.SQLException;
import javax.sql.RowSetInternal;
import javax.sql.rowset.WebRowSet;
import javax.sql.rowset.spi.XmlWriter;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;
public class WriteXML {
public static void main(String[] args) throws IOException
{
//使用DocumentHelper创建一个Document对象
Document doc = DocumentHelper.createDocument();
//添加并得到根元素
Element root = doc.addElement("books");
//为根元素添加子元素
Element book = root.addElement("book");
//为子元素添加属性
book.addAttribute("id", "b01");
//为book添加子元素
Element name = book.addElement("name");
Element author = book.addElement("author");
Element price = book.addElement("price");
//为子元素添加文本信息
name.addText("Think in Java");
author.addText("MIKE");
price.addText("20.5");
/*//将Document对象的内容写入到一个文件中
Writer write = new FileWriter(new File("src/book1.xml"));
doc.write(write);
//关闭流
write.close();
*/
//格式良好地输出
OutputFormat format = OutputFormat.createPrettyPrint();
XMLWriter write = new XMLWriter(new FileWriter(new File("src/book2.xml")),format);
write.write(doc);
//关闭流
write.close();
}
}
<?xml version="1.0" encoding="UTF-8"?>
<books>
<book id="b01">
<name>Think in Java</name>
<author>MIKE</author>
<price>20.5</price>
</book>
</books>