/* ^HTvw~]5
**SiteFileFetch.java w_~tY*IwB
*/ oz|+{b}%
package NetFox; ]y$/~(OW
import java.io.*; 1sJz`+\
import java.net.*; B !rb*"[
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public class SiteFileFetch extends Thread { tF<&R&=
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SiteInfoBean siteInfoBean = null; //文件信息Bean P~x4h{~Gd
long[] nStartPos; //开始位置 )`gxaT>&l
long[] nEndPos; //结束位置 g@?R"
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Gtvbm
long nFileLength; //文件长度 YETGq-
boolean bFirst = true; //是否第一次取文件 ).Iifu|ks
boolean bStop = false; //停止标志 m|]"e@SF2
File tmpFile; //文件下载的临时信息 F`Z?$ 1
DataOutputStream output; //输出到文件的输出流 S~|\bnE
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) jsKKg^g
public SiteFileFetch(SiteInfoBean bean) throws IOException $0~1;@`rQ6
{ AnZy
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siteInfoBean = bean; }<'ki
;
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); /:,}hy+U
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); s~5rP:
if(tmpFile.exists ()) tpgD{BY^wJ
{ fX1Ib$v
bFirst = false; e%9zY{ABR%
read_nPos(); AmCymT3P*e
} K&-uW _0
else [8acan+
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{ Fd%JF#Hk
nStartPos = new long[bean.getNSplitter()]; rTST_$"_6
nEndPos = new long[bean.getNSplitter()]; E 429<LQI/
} YWk+}y}^d
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} ZF<$6"4N
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public void run() diKl}V#u
{ *
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//获得文件长度 (7??5gjh
//分割文件 |#(y?! A^
//实例FileSplitterFetch , $cpm=1
//启动FileSplitterFetch线程 :{KpnJvd
//等待子线程返回 {~'Iu8TvZ
try{ ,"?8
if(bFirst) &hM7y7
{ )]zsAw`/
nFileLength = getFileSize(); owA.P-4
if(nFileLength == -1) PM)nw;nS
{ yy`XtJBWWs
System.err.println("File Length is not known!"); j:HIcCp
} ;[:IC^9fv
else if(nFileLength == -2) *(Z\"o!
{ aR)w~s\6
System.err.println("File is not access!"); PJ<9T3Fa
} Y/L*0M.<
else c?Mbyay
{ g6OPYUPg
for(int i=0;i<nStartPos.length;i++) NjO_Y t
{ ?YF2Uc8z%2
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ]L
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} 59X XmVg
for(int i=0;i<nEndPos.length-1;i++) }LoMS<O-[
{ }V 4u`=
nEndPos = nStartPos[i+1]; _9<Mo;C
} Q5Epq
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nEndPos[nEndPos.length-1] = nFileLength; ;Qq7@(2y
} [|\#cVWs
} 6$H`wDh#(&
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//启动子线程 V \/Qik{h
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; $dsLU5]1o
for(int i=0;i<nStartPos.length;i++) bR?xz-g%<3
{ ONFx -U]
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), I]WvcDJ}C
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 9!ARr@ ;
nStartPos,nEndPos,i); :G&:v
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 6d3YLb4M$i
fileSplitterFetch.start(); ;
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} h\+8eeIl
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), `$vf 9'\+
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ~6+>2|wIS
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", e2L>"/
nEndPos = " + nFileLength); 35:RsL
// fileSplitterFetch[nPos.length-1].start(); .eyJ<b9
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//等待子线程结束 VHv L:z
//int count = 0; -vc
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//是否结束while循环 "6v_<t`q"
boolean breakWhile = false; S>jOVWB
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while(!bStop) Vt:\llsin
{ G"".;}AV
write_nPos(); i`?yi-R&
Utility.sleep(500); RMdU1@
breakWhile = true; 9Q\RCl_1
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for(int i=0;i<nStartPos.length;i++) z0F55<i
{ N2lz{
if(!fileSplitterFetch.bDownOver) C'S_M@I=
{ P,rLyx
breakWhile = false; 9D;ono3
break; bfkFk
} yV31OBC:
} !(3[z>
if(breakWhile) fuWAw^&
break; Pon0(:#1
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//count++; ?v'CuWS
//if(count>4) 'Zqt~5=5
// siteStop(); u#Bj#y!
} i+lq:St
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System.err.println("文件下载结束!"); "#iO{uMWb
} MYR\W*B'b
catch(Exception e){e.printStackTrace ();} SzFh
} jaMpi^C
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//获得文件长度 Z&h :3;
public long getFileSize() ^;?w<9Y
{ c;=St1eoz
int nFileLength = -1; wzZ]|
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try{ Zjs,R{
URL url = new URL(siteInfoBean.getSSiteURL()); y{XNB}E
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ?q0a^c?A^
httpConnection.setRequestProperty("User-Agent","NetFox"); %O{FZgi%wA
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int responseCode=httpConnection.getResponseCode(); 0XE(v c!
if(responseCode>=400) .dvs&+I
{ ol`q7i.
processErrorCode(responseCode); ,V&E"D{u
return -2; //-2 represent access is error rERtOgi
} 715J1~aRNr
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String sHeader; F(,SnSam
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for(int i=1;;i++) -7 EwZRS@9
{ j",*&sy
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); -'i[/{
//Utility.log(in.readLine()); lHu/pSu@k
sHeader=httpConnection.getHeaderFieldKey(i); $A(3-n5=
if(sHeader!=null) Exat_ L'?
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if(sHeader.equals("Content-Length")) J.0&gP V
{ ~{6}SXp4U
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); TdoH((nY
break; i-x/h-
} _ CzAv%
} 0bGQO&s
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else 2J`LZS
break; eJEcLK3u
} rhN"#?
} E/E|*6R
catch(IOException e){e.printStackTrace ();} %<h2^H\O
catch(Exception e){e.printStackTrace ();} ldG$hk'
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Utility.log(nFileLength); c>C!vAg
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return nFileLength; C Y)[{r
} Ba
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//保存下载信息(文件指针位置) TG.\C8;vFh
private void write_nPos() B{1yMJA
{ _^^5
try{ a & 6-QVk
output = new DataOutputStream(new FileOutputStream(tmpFile)); H]Gj$P=k
output.writeInt(nStartPos.length);
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for(int i=0;i<nStartPos.length;i++) "l6Ob
{ 3d_g@x#9
// output.writeLong(nPos); x2g=%K=
output.writeLong(fileSplitterFetch.nStartPos); W1Om$S1
output.writeLong(fileSplitterFetch.nEndPos); CWnRRZ}r
} ;{g>Z|
output.close(); A2B]E,JMp
} V}4u1oG
catch(IOException e){e.printStackTrace ();} o(xt%'L`t
catch(Exception e){e.printStackTrace ();} =5h,ZB2A
} hQDl&A
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//读取保存的下载信息(文件指针位置) vLM-v
private void read_nPos() 4[K6 ZDBU
{ $2k9gO
try{ ?yvjX90
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 6x!
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int nCount = input.readInt(); "ODs.m oq
nStartPos = new long[nCount]; luO4ap]*
nEndPos = new long[nCount]; $
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for(int i=0;i<nStartPos.length;i++) 0 oHnam
{ "H)D~K~*
nStartPos = input.readLong(); {+|Em (M
nEndPos = input.readLong(); ww~gmz
} c(!{_+q"
input.close(); <(2,@_~@r
} -r6LndQs
catch(IOException e){e.printStackTrace ();} }m-+EUEo9
catch(Exception e){e.printStackTrace ();} n6
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} Z_?r5M;
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private void processErrorCode(int nErrorCode) OYNPZRu
{ 8E\6RjM
System.err.println("Error Code : " + nErrorCode); uVV;"LVK~
} 'B$qq[l]S
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//停止文件下载 {!7 ^w
public void siteStop() k/}E(_e
{ [|\BuUT'
bStop = true; ih/MW_t=m=
for(int i=0;i<nStartPos.length;i++) NhA_dskvo
fileSplitterFetch.splitterStop(); :g=z}7!s
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} &B5@\Hd;
} o w<.Dh
//负责部分文件的抓取 RA~%Cw4t
**FileSplitterFetch.java H{3A6fb<
*/ Gdf*x<T1
package NetFox; Y!|*`FII
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import java.io.*; lnoK.Vk9,
import java.net.*; RwC1C(ZP
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public class FileSplitterFetch extends Thread { jP9)utEm6
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String sURL; //File URL FF"`F8-w>Z
long nStartPos; //File Snippet Start Position )q48cQ
long nEndPos; //File Snippet End Position 0 oFRcU
int nThreadID; //Thread's ID <|'C|J_!
boolean bDownOver = false; //Downing is over wv8WqYV
boolean bStop = false; //Stop identical 7VdG6`TDR
FileAccessI fileAccessI = null; //File Access interface qh)o44/
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException gL+8fX2G6
{ "&ElKy
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this.sURL = sURL; =sk]/64h``
this.nStartPos = nStart; NyTv~8A`)
this.nEndPos = nEnd; K 5SHt'P
nThreadID = id; >d&_e[j
fileAccessI = new FileAccessI(sName,nStartPos);//定位 Ih]'OaE
} _T 5ZL
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public void run() P7;=rSW
{ %z&=A%'a
while(nStartPos < nEndPos && !bStop) c:Tw.WA
{ fCL5Et
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try{ &n.7~C]R
URL url = new URL(sURL); LB|FVNW/S
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); gQJ y"f
httpConnection.setRequestProperty("User-Agent","NetFox"); }kaU0 P
String sProperty = "bytes="+nStartPos+"-"; ON{&-
httpConnection.setRequestProperty("RANGE",sProperty); mJaWzR
Utility.log(sProperty); M~Yho".
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InputStream input = httpConnection.getInputStream(); &}P{w
//logResponseHead(httpConnection); E"e <9
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byte[] b = new byte[1024]; ZW$PJmz
int nRead; 0Bx.jx0?
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) V&x6ru#
{ Tti]H9g_
nStartPos += fileAccessI.write(b,0,nRead); 8-Ik .,}
//if(nThreadID == 1) Y]ML-smN
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 4@D 8{?$~Q
} V45\.V
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Utility.log("Thread " + nThreadID + " is over!"); I4kN4*d!N,
bDownOver = true; Z !Njfq5
//nPos = fileAccessI.write (b,0,nRead); &h.E
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}
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catch(Exception e){e.printStackTrace ();} }R#YO$J7
} %/17K2g
} :jB8Q$s
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//打印回应的头信息 !BD+H/A.{
public void logResponseHead(HttpURLConnection con) }~Z1C0t
{ Np>[mNmga
for(int i=1;;i++) dALJlRo"
{ <^?64
String header=con.getHeaderFieldKey(i); 8<}f:9/
if(header!=null) PYDf|S7
//responseHeaders.put(header,httpConnection.getHeaderField(header)); Ay'2!K,I
Utility.log(header+" : "+con.getHeaderField(header)); *k:Sg*neVq
else G*_$[| H
break; y#HDJ=2
} ,6Ulj+l
} d&n&_>
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public void splitterStop() e*w2u<HP
{ 5/<?Y&x
bStop = true; VmM?KlC
} F;l*@y Tq
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} i9?$BZQ[R
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/* )0Av:eF-+
**FileAccess.java ,TY&N-
*//文件访问(定位,写) J{"<Hgb
package NetFox; ||TKo967]
import java.io.*; d6ZJh xJ
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public class FileAccessI implements Serializable{ 8w &