/* y %$O-q
**SiteFileFetch.java 7+TiyY]K
*/ "N:XzG
package NetFox; I\?9+3 XnQ
import java.io.*; )Dp/('Z2
import java.net.*; "jecsqCgK0
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public class SiteFileFetch extends Thread { iGDLZE+?
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SiteInfoBean siteInfoBean = null; //文件信息Bean #eU.p&Zc
long[] nStartPos; //开始位置 ;?}l
long[] nEndPos; //结束位置 {k.MS-q
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ultG36.x
long nFileLength; //文件长度 ?T_3n:
boolean bFirst = true; //是否第一次取文件 z)XRx:YU;$
boolean bStop = false; //停止标志 t&5%?QyM
File tmpFile; //文件下载的临时信息 <D&)OxEn\
DataOutputStream output; //输出到文件的输出流 kY,U8a3!
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) kpbm4t
public SiteFileFetch(SiteInfoBean bean) throws IOException mDGn:oRj
{ aw?=hXR!
siteInfoBean = bean; Zn,>]X
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); HIGq%m=-x
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); !/ y!QXj
if(tmpFile.exists ()) t:JI!DR
{ Z=4{Vv*
bFirst = false;
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read_nPos(); /sR%]q
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} H* ,,^
else 2M)]!lYy
{ Y
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nStartPos = new long[bean.getNSplitter()]; ~Au,#7X)
nEndPos = new long[bean.getNSplitter()]; mD:IO
} (vR 9H(#
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} E6Rz@"^XV
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public void run() @ZN^1?][
{ =H0vE7 {*
//获得文件长度 _qvK*nE
//分割文件 J68j=`Y
//实例FileSplitterFetch 9/ SXs0
//启动FileSplitterFetch线程 KPSh#x&I
//等待子线程返回 d;Hn#2C
try{ Z') pf
if(bFirst) kE.x+2
{ BY\:dx)mK
nFileLength = getFileSize(); nqR?l4 DX
if(nFileLength == -1) lX:|iB
{ TUL_TR
System.err.println("File Length is not known!"); 2:}fe}
} %I!:ITa
else if(nFileLength == -2)
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{ y AF+bCXo
System.err.println("File is not access!"); gw+9x<e
} [LT^sb
else ^n#1<K[E
{ GZ!|}$8
for(int i=0;i<nStartPos.length;i++) R cY>k
{ f0+2t.tj
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Kzy/9
} /)N@M
for(int i=0;i<nEndPos.length-1;i++) He0=-AR8
{ "`}~~.q
nEndPos = nStartPos[i+1]; =9L$L|W
} `\=Gp'&Q+
nEndPos[nEndPos.length-1] = nFileLength; 4!$
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} (VyNvB
} @J[6,$UVu
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//启动子线程 3[p_!eoW
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; y<W8Q<9
for(int i=0;i<nStartPos.length;i++) hf!|\f
{ R~L0{`
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .F&9.#>
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), \^+ILYO:$
nStartPos,nEndPos,i); f<i7@%
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); sK$wN4k
fileSplitterFetch.start(); fnzy5+9"
} @
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !2Dy_U=
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1);
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", G"
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nEndPos = " + nFileLength); TGT$ >/w >
// fileSplitterFetch[nPos.length-1].start(); maMHZ\Q
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//等待子线程结束 ,7]k fB
//int count = 0; >Dm8m[76
//是否结束while循环 #$S}3
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boolean breakWhile = false;
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while(!bStop) @}F Awv^f
{ ]*"s\ix
write_nPos(); S{F-ttS"
Utility.sleep(500); *a}(6Cx
breakWhile = true; T*2C_oW
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for(int i=0;i<nStartPos.length;i++) &!.HuRiuC
{ 4Wel[]
if(!fileSplitterFetch.bDownOver) )yee2(S
{ -*VKlZ8-
breakWhile = false;
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break; *}b]rjsj
} SDJH;c0
} O0~vf[i];
if(breakWhile) >.9eBz@
break; a^nAZ
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//count++; eBB:~,C^q.
//if(count>4) vL_zvXA
// siteStop(); S4vbN
} I?Y d
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System.err.println("文件下载结束!"); w*LbH]l<-
} Z_z#QX>=D
catch(Exception e){e.printStackTrace ();} Y)HbxFF`/
} iSp
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//获得文件长度 LVtu*k
public long getFileSize() IhonnLLW
{ q=c/B(II!
int nFileLength = -1; Ub)I66
try{ )qM|3],
URL url = new URL(siteInfoBean.getSSiteURL()); $3
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); `7Ug/R<
httpConnection.setRequestProperty("User-Agent","NetFox"); B!,yfTk]
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int responseCode=httpConnection.getResponseCode(); r2eQ{u{nX
if(responseCode>=400) iyM^[/-R6
{ qc8Ta"
processErrorCode(responseCode); n.$(}A
return -2; //-2 represent access is error Q7Ij4
} UmP'L!
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String sHeader; mvTb~)
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for(int i=1;;i++) WcGXp$M
{ 9N
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); f'{>AKi=C
//Utility.log(in.readLine());
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sHeader=httpConnection.getHeaderFieldKey(i); *BOBH;s
if(sHeader!=null) rihlae5Kz
{ UC!5
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if(sHeader.equals("Content-Length")) ^
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{ %W;u}`
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); c4|so=
break;
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} epVH.u%
} xH$%5@~
else Z{}+)Q*Q
break; G[6=u|(M
} 878tI3-
} |R~;&x:
catch(IOException e){e.printStackTrace ();} eTZ`q_LfI1
catch(Exception e){e.printStackTrace ();} raQYn?[
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Utility.log(nFileLength); 4(m3c<'P
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return nFileLength; MZ^Ch
} #$u ZDQY_
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//保存下载信息(文件指针位置) -s~p}CQ.
private void write_nPos() >@Khm"/T
{ 6DZ2pT:
try{ SRk7gfP*q
output = new DataOutputStream(new FileOutputStream(tmpFile)); m/N(%oMWB=
output.writeInt(nStartPos.length); DZAH"sb
for(int i=0;i<nStartPos.length;i++) N[{]iQ
{ :eLLDp<
// output.writeLong(nPos); H2]BMkum
output.writeLong(fileSplitterFetch.nStartPos); HjPH
output.writeLong(fileSplitterFetch.nEndPos); zf")|9j
} |
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output.close(); qq>44 k\|)
} _Fvsi3d/
catch(IOException e){e.printStackTrace ();} ^ N_`^m
catch(Exception e){e.printStackTrace ();} k7[)g]u
} c=<v.J@K
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//读取保存的下载信息(文件指针位置) fa.f(c
private void read_nPos() dK7 ^
{ 0Cv4/Ar(
try{ <sF!]R&4
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ,DQ
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int nCount = input.readInt(); L/%xbm~
nStartPos = new long[nCount]; 33S`aJ
nEndPos = new long[nCount]; PE +qYCpP9
for(int i=0;i<nStartPos.length;i++) 0MhxFoFO
{ "URVX1#(r
nStartPos = input.readLong(); j[BgP\&,
nEndPos = input.readLong(); f(W,m
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} JCBnFrP
input.close(); 4>d[qr*<
} |oB]6VS`
catch(IOException e){e.printStackTrace ();} !FO:^P
catch(Exception e){e.printStackTrace ();} f61]`@Bk
} P}b Dn;
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private void processErrorCode(int nErrorCode) 1gO//fdI
{ ook' u}h
System.err.println("Error Code : " + nErrorCode); P/HHWiD`D
} (p'/p
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//停止文件下载 ',<{X(#(
public void siteStop() vsxvHot=
{ nT(!HDH
bStop = true;
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for(int i=0;i<nStartPos.length;i++) GWVEIZ
fileSplitterFetch.splitterStop(); 9Vh_XBgP
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} }"!6Xm
} ~r7DEy|+
//负责部分文件的抓取 7 B4w.P,B
**FileSplitterFetch.java &n,xGIG
*/ aA!@;rR<yU
package NetFox; xUV_2n+
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import java.io.*; +;{rU&
import java.net.*; ~M|NzK_9
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public class FileSplitterFetch extends Thread { (Qw`%B
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String sURL; //File URL #w[q.+A
long nStartPos; //File Snippet Start Position u k>q\j
long nEndPos; //File Snippet End Position |^>L`6uo
int nThreadID; //Thread's ID [U_Q 2<H
boolean bDownOver = false; //Downing is over g%KGF)+H
boolean bStop = false; //Stop identical D~t"9Z\
FileAccessI fileAccessI = null; //File Access interface 'npT+p$V
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Hj-<{#,
{ wjw<@A9
this.sURL = sURL; FN8=YUYK%
this.nStartPos = nStart; ]y$V/Ij=qK
this.nEndPos = nEnd; iLI.e rm
nThreadID = id; UGezo3}
fileAccessI = new FileAccessI(sName,nStartPos);//定位 +A.a~Stt
} -hJ>wGI
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public void run() ._F6- pl
{ A(_^_p.|
while(nStartPos < nEndPos && !bStop) <LOx.}fv
{ .P0Qs&i
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try{ cVv4gQD\
URL url = new URL(sURL); !<UEq`2
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); +X|m>9
httpConnection.setRequestProperty("User-Agent","NetFox"); k(vEp]
String sProperty = "bytes="+nStartPos+"-"; dOYm t,
httpConnection.setRequestProperty("RANGE",sProperty); 6{,K7FL
Utility.log(sProperty); ~_^o?NE,
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InputStream input = httpConnection.getInputStream(); |
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//logResponseHead(httpConnection); ~jCpL@rS
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byte[] b = new byte[1024]; 3I{ta/(
int nRead; o-e,
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) *Yk8Mj^_h
{ r{N{!"G
nStartPos += fileAccessI.write(b,0,nRead); ws=9u-
//if(nThreadID == 1) i2%m}S;D9
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ^xkppN2
} O]r3?=
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Utility.log("Thread " + nThreadID + " is over!"); QGCdeE$K
bDownOver = true; G]NtX4'4
//nPos = fileAccessI.write (b,0,nRead); +` Y ?-
} D``NQ`>A
catch(Exception e){e.printStackTrace ();} 'Tan6Qa
} cPBy(5^
} L)nVpqm
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//打印回应的头信息 5\kZgXWIh
public void logResponseHead(HttpURLConnection con) -O>mY)
{ qLi1yH
for(int i=1;;i++) eYSGxcx
{ !DUg"o3G>
String header=con.getHeaderFieldKey(i); 0<]!G|;|
if(header!=null) iYQy#kO
//responseHeaders.put(header,httpConnection.getHeaderField(header)); huD\dmQ:]
Utility.log(header+" : "+con.getHeaderField(header)); _x|8U'|Ce
else EKS<s82hF&
break; J]^gF|
} G~hILW^
} ~aR='\<