Android：生成XML文件

Student{clazz='j2307',name='张三丰',sex='男',age='25'},Student{clazz='j2307'',name='周芷若',sex='女',age='23'}

List<Student> students =new ArrayList<>();

// 创建xml文件

public void createXML(View view){

//判断要生成的数据是否存在

if(students != null && students.size() >0){

try {

String nameSpace = "";

//获取一个输出流对象，文件保存在files下

File file = new File(getExternalFilesDir(null).getAbsolutePath(),"student.xml");

FileOutputStream fileOutputStream = new FileOutputStream(file);

//定义一个生成xml文件的对象

XmlSerializer xmlSerializer = Xml.newSerializer();

//xml文件输出地址

xmlSerializer.setOutput(fileOutputStream,"UTF-8");

//设置开始文档抬头

xmlSerializer.startDocument("UTF-8",true);

//文档的开始标签

xmlSerializer.startTag(nameSpace,"students");

//遍历数据生成每一项

for(Student student : students){

xmlSerializer.startTag(nameSpace,"student");

xmlSerializer.attribute(nameSpace,"class",student.clazz);

xmlSerializer.startTag(nameSpace,"name");

xmlSerializer.text(student.name);

xmlSerializer.endTag(nameSpace,"name");

xmlSerializer.startTag(nameSpace,"sex");

xmlSerializer.text(student.sex);

xmlSerializer.endTag(nameSpace,"sex");

xmlSerializer.startTag(nameSpace,"age");

xmlSerializer.text(student.age);

xmlSerializer.endTag(nameSpace,"age");

xmlSerializer.endTag(nameSpace,"student");

}

//结束文档标签

xmlSerializer.endTag(nameSpace,"students");

xmlSerializer.endDocument();

fileOutputStream.close();

Toast.makeText(getApplication(),"生成xml文件成功！",Toast.LENGTH_SHORT).show();

} catch (Exception e) {

e.printStackTrace();

Toast.makeText(getApplication(),"生成xml文件失败！"+e.getMessage(),Toast.LENGTH_SHORT).show();

}

}

}