使用dom4j写xml文件——源码

1 dom4j下载与配置

1.1 dom4j下载　

　　请移步下载链接

1.2 maven依赖

<dependency>
　　<groupId>org.dom4j</groupId>
　　<artifactId>com.springsource.org.dom4j</artifactId>
　　<version>2.1.1</version>
</dependency>

2 使用dom4j生成xml文档详细步骤

　　步骤1 创建一个Document对象的空白文档。

　　步骤2 向Document中添加根元素，返回的Element表示根元素，xml文档只有一个根元素。

　　步骤3 添加子元素。

　　步骤4 创建XmlWriter对象

　　步骤5 输出Document对象

3 实例

3.1 元素对象

 package cnblogs.testCSV;

 public class Person {
     private String id;
     private String name;
     private String sex;
     private int age;

     public Person() {
     }

     public Person(String id, String name, String sex, int age) {
         this.id = id;
         this.name = name;
         this.sex = sex;
         this.age = age;
     }

     public String getId() {
         return id;
     }

     public void setId(String id) {
         this.id = id;
     }

     public String getName() {
         return name;
     }

     public void setName(String name) {
         this.name = name;
     }

     public String getSex() {
         return sex;
     }

     public void setSex(String sex) {
         this.sex = sex;
     }

     public int getAge() {
         return age;
     }

     public void setAge(int age) {
         this.age = age;
     }
 }

3.2 写xml

 package cnblogs.testXml;

 import cnblogs.testCSV.Person;
 import org.dom4j.Document;
 import org.dom4j.DocumentHelper;
 import org.dom4j.Element;
 import org.dom4j.io.OutputFormat;
 import org.dom4j.io.XMLWriter;

 import java.io.FileOutputStream;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.UUID;

 public class FileXml {
     private static final String fileName = "D:\\workspace\\tmp\\obj.xml";

     /**
      * 生成uuid
      *
      * @return 32位uuid
      */
     private static String getUUID32() {
         return UUID.randomUUID().toString().replace("-", "").toLowerCase();
     }

     /**
      * 构造数据
      *
      * @return 数据
      */
     private static List<Person> buildData() {
         List<Person> personList = new ArrayList<Person>(10);
         personList.add(new Person(getUUID32(), "张三", "female", 26));
         personList.add(new Person(getUUID32(), "李四", "man", 34));
         personList.add(new Person(getUUID32(), "王五", "female", 55));
         personList.add(new Person(getUUID32(), "一一", "female", 11));
         return personList;
     }

     public static void writeXml() {
         List<Person> personList = buildData();
         Document doc = DocumentHelper.createDocument();
         Element root = doc.addElement("personlist");
         for (Person emp : personList) {
             Element empEle = root.addElement("person");
             Element nameEle = empEle.addElement("id");
             nameEle.addText(emp.getId());
             Element ageEle = empEle.addElement("name");
             ageEle.addText(emp.getName());
             Element genderEle = empEle.addElement("sex");
             genderEle.addText(emp.getSex());
             Element salEle = empEle.addElement("age");
             salEle.addText(emp.getAge() + "");
             empEle.addAttribute("id", emp.getId() + ""); //向当前元素中添加指定名字以及对应值的属性
         }
         try {
             XMLWriter writer = new XMLWriter(OutputFormat.createPrettyPrint());
             FileOutputStream fos = new FileOutputStream(fileName);
             writer.setOutputStream(fos);
             writer.write(doc);
             writer.close();
         }
         catch (Exception e) {
             e.printStackTrace();
         }
     }

     /**
      * @param args
      */
     public static void main(String[] args) throws Exception {
         writeXml();
     }
 }

3.3 输出结果

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