java发送HTTP GET POST请求

java发送HTTP GET POST请求

１、发送源码

import  java.io.BufferedReader;
import  java.io.BufferedWriter;
import  java.io.File;
import  java.io.FileReader;
import  java.io.IOException;
import  java.io.OutputStream;
import  java.io.OutputStreamWriter;
import  java.net.HttpURLConnection;
import  java.net.URL;



/**
 * 通过HTTP上传文件
 *  @author  [email protected]
 * @create 2008-4-14
  */

public   class  PostUrl {

    HttpURLConnection conn  =   null ;
    BufferedWriter bWriter  =   null ;
    OutputStream os  =   null ;
    OutputStreamWriter osw  =   null ;
    FileReader fr  =   null ;
    BufferedReader br  =   null ;
    String str  =   "" ;
     char  c  =   ' \n ' ;
    String filename  =   " d:/shchinamobile.log " ;

    

     /**
     * 通过HTTP协议以POST形式发送指定文件至指定url
     *  @param  url
     *  @throws  IOException
      */
     public   void  sendPost(String url) {
        
         try  {
            File f  =   new  File(filename);
            
            URL url1  =   new  URL(url);
            conn  =  (HttpURLConnection)url1.openConnection();
            conn.setRequestMethod( " POST " );
            conn.setRequestProperty( " Content-Type " ,  " application/x-www-form-urlencoded " );
            conn.setRequestProperty( " Connection " ,  " Keep-Alive " );
            conn.setUseCaches(  false );
            conn.setDoOutput( true );
            osw  =   new  OutputStreamWriter(conn.getOutputStream());
            fr  =   new  FileReader(f);
            br  =   new  BufferedReader(fr);
             while ((str  =  br.readLine())  !=   null ) {
                osw.write(str);
                osw.write(c);
            }
            osw.flush() ;
            osw.close() ;
            
             if  (conn.getResponseCode()  !=  HttpURLConnection.HTTP_OK)
                System.out.println(  " connect failed! " );
        }  catch  (IOException e) {
            e.printStackTrace(System.out);
        }
         finally
        {
             if  (osw  !=   null )
                 try  {
                    osw.close() ;
                }  catch  (IOException e1) {
                    e1.printStackTrace(System.out);
                }
            
             if  (conn  !=   null )
                conn.disconnect() ;
        }
    }    

     public   static   void  main(String[] args) {
        PostUrl pu  =   new  PostUrl();
         try  {
            pu.sendPost( " http://127.0.0.1:8080/testjava/testp.jsp " );
        }  catch  (Exception e) {
            e.printStackTrace();
        }
    }
}

２、接收JSP

<%
     System.err.println( " This a struts page. " );
     
          // 接收上传的文件内容的临时文件的文件名
        String tempFileName = new  String( " tempFileName1 " );
         // tempFile1对象指向这个临时文件
        File tempFile1 = new  File( " D:/ " ,tempFileName);
         // outputFile1文件输出流指向这个临时文件
        FileOutputStream outputFile1 = new  FileOutputStream(tempFile1);
         // 得到客户端提交的所有数据
        InputStream fileSource1 = request.getInputStream();
         // 将得到的客户端的数据写入临时文件
         byte  b[] = new   byte [ 1000 ];
         int  n;
         while ((n = fileSource1.read(b)) !=- 1 )
            outputFile1.write(b, 0 ,n);
         // 关闭输出流和输入流
        outputFile1.close();
        fileSource1.close();
      
      %>

已测试通过

还可以通HttpClient来发送，请参照： http://www.blogjava.net/willpower88/archive/2008/04/14/192679.html