将本地图片或者网上图片用post方式上传到图片服务器

来源：互联网发布：有什么代练接单软件编辑：程序博客网时间：2024/05/23 21:31
package com.bj95ol.test;    import java.io.BufferedReader;  import java.io.File;  import java.io.FileNotFoundException;  import java.io.FileOutputStream;  import java.io.IOException;  import java.io.InputStream;  import java.io.InputStreamReader;  import java.io.OutputStreamWriter;  import java.io.PrintWriter;  import java.net.HttpURLConnection;  import java.net.MalformedURLException;  import java.net.URL;    import javax.servlet.ServletInputStream;  import javax.servlet.http.HttpServletRequest;    import sun.misc.BASE64Decoder;  import sun.misc.BASE64Encoder;    public class SendImgToWeb {      /**      * 获得网络图片地址。或者图片地址      * @param url      * @return      */      public String getContentFromWeb(String url)      {          String filecontent="";          InputStream is=null;          BASE64Encoder base=new BASE64Encoder();          if(url.startsWith("http"))          {              try {                  HttpURLConnection urlconn=(HttpURLConnection)new URL(url).openConnection();                  is=urlconn.getInputStream();              } catch (MalformedURLException e) {                  // TODO Auto-generated catch block                  e.printStackTrace();              } catch (IOException e) {                  // TODO Auto-generated catch block                  e.printStackTrace();              }          }          int n=0;          byte[] b=null;          try {              while((n=is.available())>0)              {                  n=is.read(b);                  if(n==-1)break;                  filecontent=filecontent+base.encode(b);                                }              is.close();          } catch (IOException e) {              // TODO Auto-generated catch block              e.printStackTrace();          }          return filecontent;      }            /**      * 将图片内容用post方式发送到url中      * @param url      * @param postcontent      */            public void sendImgbyPost(String url,String postcontent)      {          try {              HttpURLConnection huc=(HttpURLConnection)new URL(url).openConnection();              huc.setDoInput(true);              huc.setDoOutput(true);              huc.setRequestMethod("POST");                            PrintWriter pw=new PrintWriter(new OutputStreamWriter(huc.getOutputStream()));              pw.print(postcontent);              pw.close();                            BufferedReader br=new BufferedReader(new InputStreamReader(huc.getInputStream()));              String content="";              String line=br.readLine();              while(line!=null)              {                  content=content+line;                  line=br.readLine();                                }                        } catch (MalformedURLException e) {              // TODO Auto-generated catch block              e.printStackTrace();          } catch (IOException e) {              // TODO Auto-generated catch block              e.printStackTrace();          }                }      /**      * 在服务器端获取发送过来的内容      * @param request      * @return      */      public String receiveContent(HttpServletRequest request)      {          int a = 0;           byte[] b = new byte[4096];          String result="";          try          {           ServletInputStream sis=request.getInputStream();          int line=sis.readLine(b, 0, b.length);          while(line!=-1)          {          result=result+new String(b,0,line);          line=sis.readLine(b, 0, b.length);          }          }          catch(Exception e)          {          e.printStackTrace();          }          return  result;      }            /**      * 将接受过来的信息生成文件      * @param request      * @param filename      */      public void createFile(HttpServletRequest request,String filename)      {          File file=new File(filename);          try {              FileOutputStream fos=new FileOutputStream(file);              String content=receiveContent(request);              BASE64Decoder base=new BASE64Decoder();              byte[] b=base.decodeBuffer(content);              fos.write(b);              fos.close();                        } catch (FileNotFoundException e) {              // TODO Auto-generated catch block              e.printStackTrace();          } catch (IOException e) {              // TODO Auto-generated catch block              e.printStackTrace();          }                }    }
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