/* XCm\z9F
**SiteFileFetch.java 6b<+8w
*/ C3)|<E
package NetFox; /VO^5Dnb
import java.io.*; wLUF v(&C
import java.net.*; U{}!y3[wK
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public class SiteFileFetch extends Thread { @zrNN>
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SiteInfoBean siteInfoBean = null; //文件信息Bean [sj VRW-
long[] nStartPos; //开始位置 (zC
long[] nEndPos; //结束位置 /l6\^Xf{
FileSplitterFetch[] fileSplitterFetch; //子线程对象 H_Os4}
long nFileLength; //文件长度 Yx),6C3
boolean bFirst = true; //是否第一次取文件 $/paEn"
boolean bStop = false; //停止标志 _88QgThb
File tmpFile; //文件下载的临时信息 Y\p$SN
DataOutputStream output; //输出到文件的输出流 8R}K?+]
@!<d0_dnC
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) bDWeU}
public SiteFileFetch(SiteInfoBean bean) throws IOException f05=Mc&)
{ x'qWM/
siteInfoBean = bean; z]$>+MH_
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ?'wsIH]m
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); [4XC#OgA
if(tmpFile.exists ()) @KA1"Wb_
{ l E^*t`+
bFirst = false; N_G4_12(
read_nPos(); e:OyjG5_
} 6/6Rah!
else *b"CPg/\
{ A,BEKjR~J
nStartPos = new long[bean.getNSplitter()]; -72j:nk
nEndPos = new long[bean.getNSplitter()]; h!e2
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} J &{xP8uq_
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} *QH[,F`I
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public void run() NR4Jn?l{
{ 6^E`Sa!s
//获得文件长度 o@/xPo|
//分割文件 w<t,j~ Pr#
//实例FileSplitterFetch >'`Sf ?+|
//启动FileSplitterFetch线程 j[XYj6*d
//等待子线程返回 n+;vjVS%
try{ P+Z\3re
if(bFirst) "-
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{ n3ZAF'
nFileLength = getFileSize(); =Ndli>x}1
if(nFileLength == -1) +O+<Go@a
{ ooE{V*Ie
System.err.println("File Length is not known!"); #s2B%X
} y94kX:q
else if(nFileLength == -2) %>y;zqZIU
{ [se^.[0,
System.err.println("File is not access!"); p<5!02yQ\
} } 0M{A+
else 8Kk\*8 <
{ OCnFEX"
for(int i=0;i<nStartPos.length;i++) [U.v:tR
{ Rri`dmH
nStartPos = (long)(i*(nFileLength/nStartPos.length)); GaBTj_3
} VT=K"`EpQ
for(int i=0;i<nEndPos.length-1;i++) JE!("]&
{ =_PvrB 2'
nEndPos = nStartPos[i+1]; qC@Ar)T
} -$YJfQE6G
nEndPos[nEndPos.length-1] = nFileLength; XmWlv{T+
} hz\WZ^
} l67KJ
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//启动子线程 jGD%r~lN
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; (}gcY
for(int i=0;i<nStartPos.length;i++) o| D^`Z
{ <I2z&
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), <>=mCZ2
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), d?hz LX
nStartPos,nEndPos,i); 4D"4zp7
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 6)[<)?A.[
fileSplitterFetch.start(); (oaYF+T
} 6sB$<#
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), aB"xqh)a}T
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Rj6|Y"gq9
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", uGCp#>+
nEndPos = " + nFileLength); saW!9HQj
// fileSplitterFetch[nPos.length-1].start(); @-"R$HOT
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//等待子线程结束 z%:1)
//int count = 0; uLV BM]Qj
//是否结束while循环 AyVrk
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boolean breakWhile = false; !wh&>3~
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while(!bStop) OW`STp!
{ Gv~p
write_nPos(); T PYDs+U
Utility.sleep(500); M"wue*&
breakWhile = true; Q~Ea8UT.#
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for(int i=0;i<nStartPos.length;i++) 6E^~n
{ &88oB6$D^q
if(!fileSplitterFetch.bDownOver) ?+`xe{k
{ 3M<!?%v\A
breakWhile = false; /fwgqFVk
break; -t3i^&fj8
} 97LpY_sU
} P}r)wAt
if(breakWhile) h6M;0_'
break; \Tm}mAvK/o
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//count++; "2hh-L7ql
//if(count>4) u\g,.C0
// siteStop(); LE;g
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} 6 hiC?2b{x
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System.err.println("文件下载结束!"); urZ8j?}c
} )2.)3w1_4
catch(Exception e){e.printStackTrace ();} '^}+Fv<O
} ~UPZ<
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//获得文件长度 Jqfm@Y
public long getFileSize() <Ar$v'W=F{
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int nFileLength = -1; {#hVD4$b
try{ 1"]P`SY$r
URL url = new URL(siteInfoBean.getSSiteURL()); wahZK~,EaY
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); YQVcECj
httpConnection.setRequestProperty("User-Agent","NetFox"); K=\&+at1
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int responseCode=httpConnection.getResponseCode(); j_Nm87i]
if(responseCode>=400) n1J]p#nCa.
{ `X8@/wf#
processErrorCode(responseCode); fRHKQ(a#
return -2; //-2 represent access is error tXq)nfGe{
} ! OE*z $\
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String sHeader; )=_ycf^MC
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for(int i=1;;i++) :zp`6l
{ JN[0L:
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); .v])S}K
//Utility.log(in.readLine()); @Icq1zb]
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sHeader=httpConnection.getHeaderFieldKey(i); {fz$Z!8-
if(sHeader!=null) k-jahm4
{ oXgdLtsu
if(sHeader.equals("Content-Length")) r"]'`qP,
{ 0k[2jh
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); @d&H]5
break; yrr)
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} ?R'Y?b
} J YmAn?o-
else qX6D1X1_
break; ,8VU&?`<}
} VmvQvQ/9R
} bToq$%sCg
catch(IOException e){e.printStackTrace ();} wCb(>pL0
catch(Exception e){e.printStackTrace ();}
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Utility.log(nFileLength); H3O@9YU
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return nFileLength; %SA!p;
} 9- )qZ
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//保存下载信息(文件指针位置) j1U 5~%^
private void write_nPos() PCE4W^ns
{ OAe#Wf!c
try{ LU2waq}VA
output = new DataOutputStream(new FileOutputStream(tmpFile)); p3]Q^KFS
output.writeInt(nStartPos.length); ;Icixu'O
for(int i=0;i<nStartPos.length;i++) T|) {<
{ 6X_\Ve
// output.writeLong(nPos); PHra+NY#A
output.writeLong(fileSplitterFetch.nStartPos); j]5WK_~M
output.writeLong(fileSplitterFetch.nEndPos); ZFxLBb:
} EX
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output.close(); Vfs$VY2.
} PkUd~c
catch(IOException e){e.printStackTrace ();} IVjU`ij
catch(Exception e){e.printStackTrace ();} 7@;">`zvm
} K4%/!`
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//读取保存的下载信息(文件指针位置) Q*ju
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private void read_nPos() Sc$UZ/qPT
{ ";NRzY
try{ ]r/^9XaqtA
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); d7Ro}>lp
int nCount = input.readInt(); wij,N(,H
nStartPos = new long[nCount]; GjT#%GBF
nEndPos = new long[nCount]; FN87^.^2S
for(int i=0;i<nStartPos.length;i++) *@S@x{{s
{ ^vni&sJ
nStartPos = input.readLong(); }DjYGMrTB
nEndPos = input.readLong(); 0^l%j 8/
} L^0v\
input.close(); pGGmA;TC1
} ?S[Y:<R{:
catch(IOException e){e.printStackTrace ();} *3+-W
catch(Exception e){e.printStackTrace ();} ,/2LY4` 5
} 3S~(:#|
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private void processErrorCode(int nErrorCode) z@U}~TvP
{ IOl+t,0x&
System.err.println("Error Code : " + nErrorCode); l*}FXL
} EbK0j?
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//停止文件下载 p]gT&[iJ
public void siteStop() `!4,jd
{ F4C!CUI
bStop = true; +l0g`:
for(int i=0;i<nStartPos.length;i++) 93Yn`Av;
fileSplitterFetch.splitterStop(); M"Y0jQ(
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} \vbk#G
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} F:g= i}7
//负责部分文件的抓取 ff2d@P,!
**FileSplitterFetch.java _eQ-`?
*/ HZjf`eM,
package NetFox; 5J.0&Dda
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import java.io.*; MQTdk*L_]
import java.net.*; oh-|'5+,;h
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public class FileSplitterFetch extends Thread { -"TR\/
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String sURL; //File URL -j2 (R?a
long nStartPos; //File Snippet Start Position -K%5(Eg
long nEndPos; //File Snippet End Position S-Fo
int nThreadID; //Thread's ID 4YROB912
boolean bDownOver = false; //Downing is over <PD?f/4 /
boolean bStop = false; //Stop identical {E_{JB~`
FileAccessI fileAccessI = null; //File Access interface 2KJ1V+g@a6
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 5f7zk
{ ERMa# L
this.sURL = sURL; 1Y/$,Oa5
this.nStartPos = nStart; \Sy7"a
this.nEndPos = nEnd; ot%.M*h-
nThreadID = id; _^S]g mE
fileAccessI = new FileAccessI(sName,nStartPos);//定位 E1V^}dn
} 7}o/:
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public void run() k5BXirB
{ 3'I^lc
while(nStartPos < nEndPos && !bStop) PGn);Baq
{ lU4}B`#"v
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try{ >t+
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URL url = new URL(sURL); ^>c8t_RG
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); @tT-JwU
httpConnection.setRequestProperty("User-Agent","NetFox"); hsNWqk qys
String sProperty = "bytes="+nStartPos+"-"; D{7w!z
httpConnection.setRequestProperty("RANGE",sProperty); Qst$S} n
Utility.log(sProperty); ^4Uw8-/ 9
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InputStream input = httpConnection.getInputStream(); tD=@ SX'Y
//logResponseHead(httpConnection); DocbxB={I
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byte[] b = new byte[1024]; J
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int nRead; B;#J"6w
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) @4+#Xd7"
{ ~Qj}ijWD
nStartPos += fileAccessI.write(b,0,nRead); Y}G_Z#- !
//if(nThreadID == 1) ~f>2U]F>5
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); y0bq;(~X~
} UXr5aZ7y
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Utility.log("Thread " + nThreadID + " is over!"); 'xK.UI
bDownOver = true; Q(7ob}+jQ
//nPos = fileAccessI.write (b,0,nRead); @E9" Zv-$
} PO-"M)M
catch(Exception e){e.printStackTrace ();} Tbbz'b;{
} B|=|.qp$)
} 0"WDH)7hJ
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//打印回应的头信息 A$/\1282
public void logResponseHead(HttpURLConnection con) :%rS
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{ rfcN/:k
for(int i=1;;i++) }M>rE
{ S7iDTG_@t
String header=con.getHeaderFieldKey(i); /%rq
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if(header!=null) eTay>G
//responseHeaders.put(header,httpConnection.getHeaderField(header)); ,T{<vRj7_
Utility.log(header+" : "+con.getHeaderField(header)); x34f9!
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else VRng=,
break; OEhHR
} W#w.h33)#6
} Do7=#|bAM
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public void splitterStop() T/r#H__`
{ p]G3)s@>
bStop = true; JgRYljQi2
} k;yw#Af8
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}
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