上传图片 图片服务器

 

package cms.xxx.common.util;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Date;
import org.apache.struts2.ServletActionContext;

import cms.xxx.common.struts2.action.BaseAction;

import com.opensymphony.xwork2.ActionSupport;
/**
 * 保证有commons-fileupload.jar,Commons-io.jar，注意jsp传过来的File的name="imgFile",配置文件加上<interceptor-ref name="fileUploadStack"></interceptor-ref>
 * 包含上传的只需要继承FileUploadAction,自定义一个方法，使用FileUploadAction属性操作上传，例子cms.huisou.info.action.AddHcinfoAct的upload,需要上传的时候只需要this.upload();
 */
public class FileUploadAction extends BaseAction {
	org.apache.struts2.dispatcher.multipart.JakartaMultiPartRequest f;
	protected static final int BUFFER_SIZE = 16 * 1024;
	protected File imgFile;
	protected String imgFileContentType;
	protected String imgFileFileName;
	public File getImgFile() {
		return imgFile;
	}
	public void setImgFile(File imgFile) {
		this.imgFile = imgFile;
	}
	public String getImgFileContentType() {
		return imgFileContentType;
	}
	public void setImgFileContentType(String imgFileContentType) {
		this.imgFileContentType = imgFileContentType;
	}
	public String getImgFileFileName() {
		return imgFileFileName;
	}
	public void setImgFileFileName(String imgFileFileName) {
		this.imgFileFileName = imgFileFileName;
	}
	protected static void copy(File src, File dst) {
		try  {
            InputStream in = null ;
            OutputStream out = null ;
             try  {                
                in = new BufferedInputStream( new FileInputStream(src), BUFFER_SIZE);
                out = new BufferedOutputStream( new FileOutputStream(dst), BUFFER_SIZE);
                 byte [] buffer = new byte [BUFFER_SIZE];
                 while (in.read(buffer) > 0 )  {
                    out.write(buffer);
                } 
             } finally  {
                 if ( null != in)  {
                    in.close();
                } 
                  if ( null != out)  {
                    out.close();
                } 
            } 
         } catch (Exception e)  {
            e.printStackTrace();
        } 
	}
	protected static String getExtention(String fileName) {
		int pos = fileName.lastIndexOf(".");
		return fileName.substring(pos);
	}
}

 class AddHcinfoAct extends FileUploadAction 代码写道 

 

	public void upload() {
		 	imgFileFileName = new Date().getTime()+ getExtention(imgFileFileName);
			File imageFile = new File(ServletActionContext.getServletContext().getRealPath("/UploadImages")+ "/" + imgFileFileName);
			copy(imgFile, imageFile);
	}
	 

 

注意JSP提交的时候加上：  

 

 enctype="multipart/form-data"

 

然后在相应的方法调用this.upload()即可

 

 

好一段时间因为时间忙，偶尔光顾下javaeye。

我记得以前做过用htmlparser抓取的img标签，然后要把所有的图片上传到图片服务器上，这期间经历了好多的波折，刚开始直接写流，不行，因为想javaeye，百度等有的图片路径是非正常路径的。比如：www.javaeye/upload/test.jpg2005-1-1/ 这显示的是一个图片，但是我写流就出现了问题，而且对百度的图片不能抓取。第二次改进方案，用百度爬虫写流，但是我不知道为何，到上传到服务器后图片变形了。这种方案不行，后来用了httpclient，当我试啦试百度和javaeye后，很惊喜，都可以，后来测试了很多的非正常的图片，也未发现有不行的情况存在。 

 

1： 普通的地址图片上传，只能上传普通的地址一般是后缀jpg,png,gif之类的图片。其中imgurl是图片地址路径，disppath为保存的文件夹，name是文件名

 

URL u = new URL(imgurl);  
URLConnection uc = u.openConnection();  
InputStream in = uc.getInputStream();  
OutputStream out = new FileOutputStream(disppath+ name);  
byte[] buffer = new byte[1024];  
while (in.read(buffer) > 0) {  
    out.write(buffer);  
}  
out.flush();  
out.close();  
in.close();  

 2： 可以上传特殊的图片，后缀可以是/180,/order等等特殊图片路径的

 

public   void readFileAndWrite(String Stringurl,String targetPath) {  
    try {  
        System.getProperties();  
  
        URL url = new URL(Stringurl);  
        URLConnection urlconnection = url.openConnection();  
        urlconnection.setDoInput(true);  
        urlconnection.setDoOutput(true);  
        urlconnection.setUseCaches(false);  
        urlconnection.setRequestProperty("User-Agent",  
                "Baiduspider+(+http://www.baidu.com/search/spider.htm)");  
        urlconnection.setRequestProperty("Content-Type",  
                "application/x-www-form-urlencoded");  
        InputStream input = urlconnection.getInputStream();  
        File dest = new File(targetPath);  
        FileOutputStream out = new FileOutputStream(dest);  
        int b = 0;  
        while((b= input.read())!=-1)  
              
        out.write(b);  
        out.close();  
        input.close();  
    } catch (Exception u8e) {  
        log.error(u8e.getMessage());  
        throw new RuntimeException(u8e.getMessage());  
    }  
}  

 3： 上面两种可能方，案都不能上传这样的图片百度很特殊的图片,百度图片屏蔽啦一些不法的读取文件，下面是模拟客户端来抓取图片，上传需要三个jar包：httpcore-4.0.1.jar，httpclient-4.0.jar，commons-logging-1.1.1.jar，代码实例：

 

HttpClient httpclient = new DefaultHttpClient();  
String url = "http://img.baidu.com/img/iknow/adphoto/Uhuoqb.jpg";  
// 生成一个请求对象  
HttpGet httpget = new HttpGet(url);  
httpget.setHeader("referer", "http://www.baidu.com/");  
// 执行请求  
HttpResponse response = httpclient.execute(httpget);  
HttpEntity entity = response.getEntity();  
  
if (entity != null) {  
    InputStream in = entity.getContent();  
    int b = 0;  
    FileOutputStream out = new FileOutputStream("a.jpg");  
    while ((b = in.read()) != -1) {  
        System.out.println(b);  
        out.write(b);  
    }  
    out.close();  
    in.close();  
  
}  
httpclient.getConnectionManager().shutdown();  

 

部分代码： // htmlparser抓取图片

	public static  String parserto(String contentString,String pathString,String httpurl)  {
		String  stringBuffer=null;
		Date date = new Date();
		SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddhhmmssms");
		 
		try {
			List list = new ArrayList();
			Parser parser = Parser.createParser(contentString, "UTF-8");
				NodeList nodeList = parser
					.extractAllNodesThatMatch(new NodeFilter() {
						public boolean accept(Node node) {
							if (node instanceof ImageTag)// <img>标记
								return true;
							return false;
						}
					});
			if(nodeList.size()>0){
				for (int i = 0; i < nodeList.size(); i++) {
					String url = ((ImageTag) nodeList.elementAt(i)).getImageURL();
					url=StrUtils.htm2txt(url); 
					Random ran = new Random();
					int a =  ran.nextInt(1000);
					String imgname  = simpleDateFormat.format(new Date())+a+".jpg";
					String reurl = ((ImageTag) nodeList.elementAt(i)).getImageURL();
					contentString=contentString.replace(reurl, httpurl + imgname);
				 // 	pathString = "C:\\Documents and Settings\\Administrator\\桌面\\t\\";
					writeimg(url,pathString+imgname);
				}
			}
		} catch (Exception e) {
		}
		contentString.replaceAll("&nbsp;", "");
		return contentString;
	}
	//httpclient模拟器写图片,几乎所有格式的图片都可以，ftp方式的图片? http !
	public static void writeimg(String url,String targetPath) throws ClientProtocolException, IOException {
		HttpClient httpclient = new DefaultHttpClient();
		HttpGet httpget = new HttpGet(url);
		httpget.setHeader("referer", "http://www.baidu.com/");
		HttpResponse response = httpclient.execute(httpget);
		HttpEntity entity = response.getEntity();
		if (entity != null) {
			InputStream in = entity.getContent();
			int b = 0;
			FileOutputStream out = new FileOutputStream(new File(targetPath));
			while ((b = in.read()) != -1) {
				out.write(b);
			}
			out.close();
			in.close();
		}
		httpclient.getConnectionManager().shutdown();
	}

 

 

 

注意:htmlparser和httpclient需要添加相应的jar