/* =3dR-3
**SiteFileFetch.java WdZ_^
*/ ]k#iA9I
package NetFox; eD,'M
import java.io.*; o6/"IIso3
import java.net.*; <5]ufv
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public class SiteFileFetch extends Thread { =fcM2O#$
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SiteInfoBean siteInfoBean = null; //文件信息Bean Q.MbzSgXL
long[] nStartPos; //开始位置 C7=N`s}
long[] nEndPos; //结束位置 ,.z?=]'en
FileSplitterFetch[] fileSplitterFetch; //子线程对象 +:kMYL3
long nFileLength; //文件长度 Jq*Q;}n
boolean bFirst = true; //是否第一次取文件 wA2^I70-
boolean bStop = false; //停止标志 WYm<_1
File tmpFile; //文件下载的临时信息 {l9g YA
DataOutputStream output; //输出到文件的输出流 r7jh)Q;BbR
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) '>k1h.i
public SiteFileFetch(SiteInfoBean bean) throws IOException FI"KJk'
{ M3VTzwuf^S
siteInfoBean = bean; T$"sw7<
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); d<cqY<y VA
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); W
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if(tmpFile.exists ()) hYbaVE
{ 3jx /1VV
bFirst = false; Tvl"KVGm
read_nPos(); 7DPxz'7):
} "SA*
else pCC3r t(
{ ]NyN@9u@(
nStartPos = new long[bean.getNSplitter()]; Ke^9R-jP
nEndPos = new long[bean.getNSplitter()]; MG,)|XpyWJ
} ZV;~IaBL
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} O>eg_K,c
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public void run() }z F,dst
{ #Q"04'g
//获得文件长度 (
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//分割文件 Jb6)U]
//实例FileSplitterFetch wv
//启动FileSplitterFetch线程 $/crb8-C
//等待子线程返回 e^k)756
try{ |pZ:5ta#
if(bFirst) CI1K:K AM
{ AAF']z<4_"
nFileLength = getFileSize(); B:VGa<lx5
if(nFileLength == -1) ](^FGz
{ &S39SV
System.err.println("File Length is not known!"); }ag;yf;
} Gc_KS'K@$
else if(nFileLength == -2) uN=f(-"
{ v ty:@?3\
System.err.println("File is not access!"); .cz7jD
} k'NP+N<M
else `$MO;Fv,G
{ uT>"(wnJ|
for(int i=0;i<nStartPos.length;i++) ?_d3|]N
{ hd W7Qck "
nStartPos = (long)(i*(nFileLength/nStartPos.length)); XZ<8M}Lg
} :Bi 4z(
for(int i=0;i<nEndPos.length-1;i++) tB`IBuy9!"
{ bO*hmDt
nEndPos = nStartPos[i+1]; v0( _4U]/
} =&^tfD
nEndPos[nEndPos.length-1] = nFileLength; 7AF6aog
} 7-
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} uFuP%f!yY
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//启动子线程 sJMpF8
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; WidLUv
for(int i=0;i<nStartPos.length;i++) VAp 1{
{ j_.tg7X
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), R5xV_;wD
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), CIVV"p`}
nStartPos,nEndPos,i); oA8A
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); h!`KX2~
fileSplitterFetch.start(); P?@o?
} p)?6~\F:
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Js(MzL
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); c`/kx
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Mp(;PbVD
nEndPos = " + nFileLength); ';m;K
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// fileSplitterFetch[nPos.length-1].start(); :o:Z
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//等待子线程结束 iI3,q-LA
//int count = 0; t]T't='
//是否结束while循环 G[=;519
boolean breakWhile = false; 0./Rdf=-1j
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while(!bStop) NZ?dJ"eq7
{ UgD)O:xaU
write_nPos(); E)|Bl>
Utility.sleep(500); fOdX2{7m
breakWhile = true; o wwWm1@
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for(int i=0;i<nStartPos.length;i++) qfRrX"
{ .*Z#;3
if(!fileSplitterFetch.bDownOver) .EC~o
{ :m36{#
breakWhile = false; !$#5E1:\
break; 1k`gr&S
} 1Beh&pl^
} 2cwJ);Eg2
if(breakWhile) xIH= gK
break; 5=b6B=\*~
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//count++; ND/oKM+?
//if(count>4) h
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// siteStop(); wYDdy gS
} )@<HG$#
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System.err.println("文件下载结束!"); R+2~%|{d
} ],{M``]q
catch(Exception e){e.printStackTrace ();} 24sQon
} w_DaldK*
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//获得文件长度 %/BBl$~ji
public long getFileSize() 221}xhn5
{ b;nqhO[f}
int nFileLength = -1; P76gJ@#m
try{ wr~Qy4 ny
URL url = new URL(siteInfoBean.getSSiteURL()); [Fv_~F491
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); TmK8z
httpConnection.setRequestProperty("User-Agent","NetFox"); q\<NW%KtX
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int responseCode=httpConnection.getResponseCode(); phB d+zQc
if(responseCode>=400) JSx[V<7m
{ 7PwH&rI
processErrorCode(responseCode); Ocz21gl-?`
return -2; //-2 represent access is error D[6wMep^n
} *1T~ruNqa
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String sHeader; #4!f/dWJp
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for(int i=1;;i++) m)]|mYjju
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ());
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//Utility.log(in.readLine()); [z6P]eC7
sHeader=httpConnection.getHeaderFieldKey(i); Vt-V'`Y
if(sHeader!=null) eu?P6>urA
{ [{#n?BT
if(sHeader.equals("Content-Length")) ~M1T
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{ HGi%b5:<=M
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Y![8-L|Q
break; n57mh5mixM
} B*P;*re
} =LEzcq>XO
else ;bL?uL
break; s.XxYXR\
} r{_1M>F
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} >GzH_]
catch(IOException e){e.printStackTrace ();} 7[i&EPN
catch(Exception e){e.printStackTrace ();} qD/h/
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Utility.log(nFileLength); 88 ca
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return nFileLength; 9;rZ )QD
} ]7RK/Zu i
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//保存下载信息(文件指针位置) |CK/-UG}
private void write_nPos() k^K%."INn
{ uKB V`I
try{ :qV|rih_Q
output = new DataOutputStream(new FileOutputStream(tmpFile)); >SS^qjh/
output.writeInt(nStartPos.length); A0Q1"b=
for(int i=0;i<nStartPos.length;i++) J7~Kjl
{ %o`Cp64`Q
// output.writeLong(nPos); |uX&T`7?-
output.writeLong(fileSplitterFetch.nStartPos); }.=@^-JBA5
output.writeLong(fileSplitterFetch.nEndPos); AJ6O>Euq
} }:1qK67S
output.close(); I*mBU^<9V
} =/4}!B/
catch(IOException e){e.printStackTrace ();} 84s:cO
catch(Exception e){e.printStackTrace ();} 2P{! n#"
} \lyHQ-gWhc
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//读取保存的下载信息(文件指针位置) w( ic$
private void read_nPos() w;J#+ik
{ JD AX^]
try{ KqNsCT+j
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); f917F.1I
int nCount = input.readInt(); 2d<`dQY{l3
nStartPos = new long[nCount]; Xob(4
nEndPos = new long[nCount]; D2io3Lo$ov
for(int i=0;i<nStartPos.length;i++) 1KJ[&jS ]
{ G {a;s-OA3
nStartPos = input.readLong(); 5RY rAzQo
nEndPos = input.readLong(); 1 -R4A7+3
}
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input.close(); tMo=q7ig
} APU~y5vG (
catch(IOException e){e.printStackTrace ();} \tdYTb.
catch(Exception e){e.printStackTrace ();} '[bw7T
} "tj]mij2)G
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private void processErrorCode(int nErrorCode) [kPl7[OL
{ h9~oS/%:
System.err.println("Error Code : " + nErrorCode); _cJ\A0h^
} x7xQrjE
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//停止文件下载 _$oE'lat
public void siteStop() ~Q=^YZgn8
{ lO}I>yo}\
bStop = true; |8{\j*3
for(int i=0;i<nStartPos.length;i++) 2 ,.8oa(
fileSplitterFetch.splitterStop(); ,{Z!T5 |
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} Su'l &]
} w"
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//负责部分文件的抓取 @^HZTuP2;
**FileSplitterFetch.java Tb]
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*/ \x"BgLSE
package NetFox; \JNWL yw
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import java.io.*; ,~NJ}4wP
import java.net.*; .;&4'ga4
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public class FileSplitterFetch extends Thread { tpP68)<ns
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String sURL; //File URL t<+gyAW
long nStartPos; //File Snippet Start Position -?ebkHe
long nEndPos; //File Snippet End Position @~IZ%lEQsD
int nThreadID; //Thread's ID BqOMg$<\[
boolean bDownOver = false; //Downing is over al4X}
boolean bStop = false; //Stop identical kB-<17
FileAccessI fileAccessI = null; //File Access interface m\K1Ex
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException z~;@Mo"*f
{ +@\=v}:
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this.sURL = sURL; IY|>'}UU#
this.nStartPos = nStart; t5S!j2E
this.nEndPos = nEnd; KU_""T
nThreadID = id; 85+w\KuEY
fileAccessI = new FileAccessI(sName,nStartPos);//定位 ,6wGd aMR
} U#4>GO;A
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public void run() yuF\YOA9
{ >W'"xK|:
while(nStartPos < nEndPos && !bStop) d*:J0J(
{ $XFFNE`%
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try{ dewN\
URL url = new URL(sURL); s18A
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8ZDWaq8^2N
httpConnection.setRequestProperty("User-Agent","NetFox"); |PLWF[+t8
String sProperty = "bytes="+nStartPos+"-"; "T6s;'k
httpConnection.setRequestProperty("RANGE",sProperty); ^i17MvT'
Utility.log(sProperty); #LG<o3An
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InputStream input = httpConnection.getInputStream(); _(KzjOMt
//logResponseHead(httpConnection); KocNJ
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byte[] b = new byte[1024]; E_K32)J-
int nRead; zHvW@A'F
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) .H5^ N\V|
{ 0Y*Ag,S
nStartPos += fileAccessI.write(b,0,nRead); ,f[Oy:fr
//if(nThreadID == 1) ,v(ikPzd
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); hj3wxH.}
} iD:TKB_r
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Utility.log("Thread " + nThreadID + " is over!"); HH^yruP\}
bDownOver = true; >):>Pz%U
//nPos = fileAccessI.write (b,0,nRead); "^Vfo$q
} DcZ,a E]
catch(Exception e){e.printStackTrace ();} UFr5'T
} }/F9(m
} ]#J-itO
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//打印回应的头信息 D}bCMN<
public void logResponseHead(HttpURLConnection con) q_0,KOGW
{ a8Z{-=)
for(int i=1;;i++) WD#7Q&T(;
{ ks<+gL{K|i
String header=con.getHeaderFieldKey(i); *g 2N&U
if(header!=null) {7 nz:f
//responseHeaders.put(header,httpConnection.getHeaderField(header)); R,W
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Utility.log(header+" : "+con.getHeaderField(header)); 1zY"Uxp
else q]m$%>
break; hu-6V="^9
} h)
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} lf2(h4[1R
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public void splitterStop() rh6m
{ [u/W h+
bStop = true; DgC;1U'
} W/<