package com.test;
import java.io.StringBufferInputStream;
import java.lang.reflect.Field;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.commons.beanutils.PropertyUtils;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
public class BeanXml
{
/*
* 用于 genenateXml()方法
* 从对象中得到值，以生成xml
*/
public String getFieldValue(Object objValue )
{
StringBuffer valuebuf = new StringBuffer();
if(objValue.getClass().isArray())
{
String [] valueArr = (String[])objValue;
for(int j=0;j<valueArr.length;j++)
{
valuebuf.append("<value>"+valueArr[j]+"</value>");
}
}
if(objValue instanceof java.util.List)
{
List list = (List)objValue;
for(int j=0;j<list.size();j++)
{
valuebuf.append("<value>"+list.get(j)+"</value>");
}
}
else if (objValue instanceof java.util.Date)
{
java.util.Date valueDate = (java.util.Date)objValue;
SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd");
valuebuf.append("<value>"+ formatter.format(valueDate)+"</value>");
}
else if (objValue instanceof String )
{
valuebuf.append("<value>"+objValue+"</value>");
}
else if(objValue instanceof Integer)
{
valuebuf.append("<value>"+objValue+"</value>");
}
else if(objValue instanceof Double)
{
valuebuf.append("<value>"+objValue+"</value>");
}
else if(objValue instanceof Float)
{
valuebuf.append("<value>"+objValue+"</value>");
}
return valuebuf.toString();
}
/*
* 用于generateBean方法
* 功能：从xml中取值，给对象赋值
*/
public Object getFieldValue(Object object,String name,List valuelist)
{
Object objValue=null;
Object objType =null;
String fieldname ="";
Class cls = object.getClass();
Field[] fields = cls.getDeclaredFields();
try
{
for(int i=0;i<fields.length;i++)
{
fieldname = fields[i].getName();
if(name.equals(fieldname))
{
objType = PropertyUtils.getProperty(object, name);
objValue = getValueByType(objType,valuelist);
return objValue;
}
}
}
catch(Exception e)
{
e.printStackTrace();
}
return "";
}
public Object getValueByType(Object objType,List valuelist)
{
Object objValue=null;
try
{
if(objType.getClass().isArray())
{
String[] arr=null;
for(int i=0;i<valuelist.size();i++)
{
arr=new String[valuelist.size()];
arr[i]=(String)valuelist.get(i);
}
objValue = arr;
}
else if (objType instanceof java.util.List)
{
objValue = valuelist;
}
else if (objType instanceof java.util.Date)
{
SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd");
formatter.applyPattern("yyyyMMdd");
objValue = formatter.parse((String)valuelist.get(0));
}
else if (objType instanceof String )
{
objValue = (String)valuelist.get(0);
}
else if(objType instanceof Integer)
{
objValue = Integer.valueOf((String)valuelist.get(0));
}
else if(objType instanceof Double)
{
objValue = Double.valueOf((String)valuelist.get(0));
}
else if(objType instanceof Float)
{
objValue = Float.valueOf((String)valuelist.get(0));
}
}
catch(Exception e)
{
e.printStackTrace();
}
return objValue;
}
/**
* 生成xml
*/
public String generateXML(Object object)
{
Class cls = object.getClass();
Field[] fields = cls.getDeclaredFields();
String name= "";
String type ="";
String value ="";
StringBuffer buf =new StringBuffer();
buf.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
buf.append("<package>");
buf.append("<classname>"+cls+"</classname>");
try
{
for(int i=0;i<fields.length;i++)
{
name = fields[i].getName();
Object objValue = PropertyUtils.getProperty(object, name);
type = PropertyUtils.getPropertyType(object, name).getName();
value = getFieldValue(objValue);
buf.append("<"+name+">");
buf.append("<property>"+type+"</property>");
buf.append("<values>"+value+"</values>");
buf.append("</"+name+">");
}
buf.append("</package>");
}catch(Exception e)
{
e.printStackTrace();
}
return buf.toString();
}
/*
* 生成bean
*/
public Object generateBean(String strXML)
{
String name ="";
String type ="";
List elemlist = new ArrayList();
Object objValue;
String classname ="";
Object object =null;
try
{
SAXReader reader = new SAXReader();
StringBufferInputStream is=new StringBufferInputStream(strXML);
Document document = reader.read(is);
Element root = document.getRootElement();
Iterator iter = root.elementIterator();
if(iter.hasNext())
{
classname = ((Element)iter.next()).getTextTrim();
if(classname.indexOf(" ")>0)
classname = classname.substring(classname.lastIndexOf(" ")+1);
object =Class.forName(classname).newInstance();
for( ;iter.hasNext();)
{
Element element = (Element) iter.next();
name = element.getName();
type = (element.element("property")).getTextTrim();
elemlist = element.element("values").elements();
List valuelist = new ArrayList();
for(int j=0;j<elemlist.size();j++)
{
Element subelement = (Element)elemlist.get(j);
valuelist.add(subelement.getTextTrim());
}
objValue = getFieldValue(object,name,valuelist);
PropertyUtils.setProperty(object, name, objValue);
}
}
}catch(Exception e)
{
e.printStackTrace();
}
return object;
}
public static void main(String[] args)
{
try
{
TestBean tb = new TestBean();
String [] str = {"123","23"};
String strxml="";
List list =new ArrayList();
list.add("list111");
list.add("list222");
list.add("list333");
tb.id =123;
tb.setId(123);
tb.setName("abced");
tb.setDate(new java.util.Date());
tb.setArrId(str);
tb.setList(list);
BeanXml bx = new BeanXml();
System.out.println("-------xmlvalue:"+bx.generateXML(tb));
strxml = bx.generateXML(tb);
TestBean testb=(TestBean)bx.generateBean(strxml);
//bx.generateBean(strxml);
System.out.println("-------id:"+testb.getId());
System.out.println("-------name:"+testb.getName());
System.out.println("-------date:"+testb.getDate());
System.out.println("-------arrid"+testb.getArrId()[1]);
System.out.println("-------list:"+testb.getList().get(2));
}catch(Exception e)
{
e.printStackTrace();
}
}
}