xstream 读写对象(图片)到xml

做对象的序列化,到Xml的读写解决方法:
   
        利用开源工具xstream进行对象的序列化到xml的读写,下面的项目主要是:针对一个含有图片的对象的到xml的读写操作。

项目结构及所需jar包:
              

实体类编写:
import com.thoughtworks.xstream.annotations.XStreamAlias;
import com.thoughtworks.xstream.annotations.XStreamAsAttribute;

@XStreamAlias("Preparation")
public class Preparation {
    @XStreamAsAttribute
    public String preparationText;

    @XStreamAsAttribute
    public String preparationType;

    @XStreamAsAttribute
    public String questionText;
    
    @XStreamAsAttribute
    public String questionAnswer;
    
    @XStreamAsAttribute
    public String preparationImage;
    
    @XStreamAsAttribute
    public String responseable;

    public String getPreparationText() {
        return preparationText;
    }

    public void setPreparationText(String preparationText) {
        this.preparationText = preparationText;
    }

    public String getPreparationType() {
        return preparationType;
    }

    public void setPreparationType(String preparationType) {
        this.preparationType = preparationType;
    }

    public String getQuestionText() {
        return questionText;
    }

    public void setQuestionText(String questionText) {
        this.questionText = questionText;
    }

    public String getQuestionAnswer() {
        return questionAnswer;
    }

    public void setQuestionAnswer(String questionAnswer) {
        this.questionAnswer = questionAnswer;
    }

    public String getPreparationImage() {
        return preparationImage;
    }

    public void setPreparationImage(String preparationImage) {
        this.preparationImage = preparationImage;
    }

    public String getResponseable() {
        return responseable;
    }

    public void setResponseable(String responseable) {
        this.responseable = responseable;
    }

    @Override
    public String toString() {
        // TODO Auto-generated method stub
        return preparationText+";"+preparationImage;
    }
    

}
 
图片操作类(将图片转换为字节流进行存储并读取)
package cn.mccn.com.test;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

public class Image {
    /*
     * 输入流,读取图片或者Txt文件的字节码
     
*/
    @SuppressWarnings("finally")
    public static String getRimg(String file1) {
        StringBuilder builder = new StringBuilder(1000000);
        byte[] bytes = null;
        try {
            new File(file1).createNewFile();
            FileInputStream in = new FileInputStream(file1);
            BufferedInputStream bis = new BufferedInputStream(in);
            bytes = new byte[bis.available()];
            bis.read(bytes);
            bis.close();

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            return new BASE64Encoder().encodeBuffer(bytes);
        }
    }
    /*
     * 输出流,根据输入流传递的字节码生成图片或者txt等文件
     
*/
    public static void getWimg(String content, String file2) {
        try {
            FileOutputStream out = new FileOutputStream(file2);
            BufferedOutputStream bos = new BufferedOutputStream(out);
            DataOutputStream dos = new DataOutputStream(bos);
            byte[] bs = new BASE64Decoder().decodeBuffer(content);
            dos.write(bs);
            dos.flush();
            dos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
 
}

xml操作工具类(主要进行xml格式定制,读写xml)

package cn.mccn.com.test;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;
import cn.mccn.com.bean.*;
public class Util {
    
    /** 定制Xml格式和属性标签*/
    private static XStream setXStream(XStream stream) {
 
     //   stream.alias("Page", Page.class);
        
        stream.alias("Preparation", Preparation.class);
        stream.aliasAttribute(Preparation.class, "preparationText", "preparationText");
        stream.aliasAttribute(Preparation.class, "preparationType", "preparationType");
        stream.aliasAttribute(Preparation.class, "questionText", "questionText");
        stream.aliasAttribute(Preparation.class, "questionAnswer", "questionAnswer");
        stream.aliasAttribute(Preparation.class, "responseable", "responseable");
        stream.aliasField("preparationImage", Preparation.class, "preparationImage");
        
        return stream;
 
    }
    
    /* * 根据定制创建Xml 文件 */
    public static String makeXML(List list) {
        
        XStream stream = new XStream();
        stream = setXStream(stream);
        System.out.println(stream.toString());
        String str = stream.toXML(list);
        System.out.println(str.toString());
        return str;
 
    }
    
    /* * 将对象根据定制产生的内容写入Xml 文件 */
    public static void writeXML(String s) {
 
        FileWriter fw = null;    
        String str="<?xml version='1.0' encoding='UTF-8'?>"+s;
        try {
            fw = new FileWriter("e:/testXtram.xml");
            fw.write(str, 0, str.length());
            fw.flush();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
 
    /** xstream方式解析Xml*/
    public static List readXML2(InputStream inputStream) {
 
        XStream stream = new XStream(new DomDriver());
        stream = setXStream(stream);
        return (List) stream.fromXML(inputStream);
        
    }
}

Main方法类(进行读写对象到xml的测试) 
package cn.mccn.com.test; 

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import cn.mccn.com.bean.*;
public class Main {
    public static void insertXml(List list) {   
        List preparations=new ArrayList();  
        for (int i = 0; i < list.size(); i++) { 
            Preparation preparation=new Preparation();
            preparation=(Preparation)list.get(i);
            String file1 =preparation.getPreparationImage();
            String content = Image.getRimg(file1);
            preparation.setPreparationImage(content.toString()); 
            preparations.add(preparation);                      
        }

        Util.writeXML(Util.makeXML(preparations));
        System.out.println(Util.makeXML(preparations).toString());
    }

    public static List  exportXml(String file,String file2) {
        File f2 = new File(file);
          List list=new ArrayList();
          List list1=new ArrayList();
        try {
            InputStream in = new FileInputStream(f2);
            list = Util.readXML2(in);
            for (int i = 0; i < list.size(); i++) {
                Preparation preparation = (Preparation) list.get(i);
                String content = preparation.getPreparationImage();
                Image.getWimg(content.trim(), file2+"1"+i+".jpg");
                preparation.setPreparationImage(file2+"1"+i+".jpg");
                list1.add(preparation);
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        return list1;
    }
    
     public static void main(String[]args){
         Preparation preparation=new Preparation();
         preparation.setQuestionText("张涛");
         preparation.setPreparationType("0");
         preparation.setPreparationText("0");
         preparation.setPreparationImage("e:/0.jpg");
         preparation.setQuestionAnswer("0");
         preparation.setResponseable("0");
         List list=new ArrayList();
         
        // list.add(preparation);
        
// insertXml(list);
         
         list= exportXml("e:/testXtram.xml", "f:/");
         System.out.println(list.size()+";"+list.get(0).toString());
     }
}

posted on 2012-09-10 18:33 Nirvana reborn 阅读(547) 评论(0)  编辑  收藏 所属分类: ★开发经验


只有注册用户登录后才能发表评论。


网站导航:
 
<2012年9月>
2627282930311
2345678
9101112131415
16171819202122
23242526272829
30123456

导航

统计

公告

我好喜欢它,
我的 QQ 66013804
我想做技术流,可是我很懒,
博客新地址:<a href="http://cobaya.cn/" >

随笔分类(19)

文章档案(1)

博主链接

最新评论

阅读排行榜