xml转换为java对象

import java.lang.reflect.Field;

public static Object xmlToObject(String xml,Class clazz) throws Exception{
  Object obj = clazz.newInstance();
  Field[] fields = clazz.getDeclaredFields();
  for(Field field : fields){
   String fieldName = field.getName();
   String fieldName_start = "<" +fieldName + ">";
   String fieldName_end  = "</" + fieldName + ">";
   String fieldVal = null;
   if(xml.contains(fieldName)){
    fieldVal = xml.substring(xml.indexOf(fieldName_start) + fieldName_start.length(), xml.indexOf(fieldName_end));
   }
   if(!isNull(fieldVal) && !"null".equals(fieldVal) && !"NULL".equals(fieldVal)){
    String setMethodName = "set" + fieldName.substring(0,1).toUpperCase() + fieldName.substring(1);
    clazz.getDeclaredMethod(setMethodName,String.class).invoke(obj, new Object[]{fieldVal});
   }
  }
  return obj;
 }