求助dom 树的问题

[qq_17209097]

想用dom生成这样一个xml文件
<?xml version="1.0" encoding="GBK"?>
<adresslist>
<link>
<name>张三</name>
<email>[e-mail]</email>
<telephone>13249090906</telephone>
</link>
</adresslist>

部分代码是：
Document doc=null;
doc=builder.newDocument();
Element adressList=doc.createElement("adresslist");
Element linkman=doc.createElement("link");
Element name=doc.createElement("name");
Element email=doc.createElement("email");
Element telephone=doc.createElement("telephone");//设置节点
//设置节点的文本内容
name.appendChild(doc.createTextNode(MainActivity.this.name.getText().toString()));
email.appendChild(doc.createTextNode(MainActivity.this.email.getText().toString()));
telephone.appendChild(doc.createTextNode(MainActivity.this.tel.getText().toString()));

linkman.appendChild(name);
linkman.appendChild(email);
linkman.appendChild(telephone);
adressList.appendChild(linkman);
doc.appendChild(adressList);


name和email都正常，加了telephone就出错
把有关telephone的代码注释掉就正常，想不出什么原因 求指教

[kindness_cobra]

public static void main(String[] args) throws Exception { cust c=new cust(); c.setName("张三"); c.setEmail("[e-mail]"); c.setTelephone("13249090906"); Document doc = DocumentHelper.createDocument(); Element root = doc.addElement("adresslist"); Element link=root.addElement("link"); //添加属性 link.addElement("name").setText(c.getName()); link.addElement("email").setText(c.getEmail()); link.addElement("telephone").setText(c.getTelephone()); OutputStream ops = new FileOutputStream("d:/czh2/customer.xml"); OutputFormat format = OutputFormat.createPrettyPrint(); XMLWriter writer = new XMLWriter(ops,format); writer.write(doc); writer.close(); ops.close(); } } 正常