/* )Ga6O2:
**SiteFileFetch.java t|q=NK/
*/ }>w;
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package NetFox; d?K8Ygz
import java.io.*; dO@iq^9-
import java.net.*; 8a h]D
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public class SiteFileFetch extends Thread { a$GKrc,z
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SiteInfoBean siteInfoBean = null; //文件信息Bean 7Av]f3Zr
long[] nStartPos; //开始位置 lO
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long[] nEndPos; //结束位置 4L0LT>'M\
FileSplitterFetch[] fileSplitterFetch; //子线程对象 c"xaN
long nFileLength; //文件长度 pIXQ/(h31
boolean bFirst = true; //是否第一次取文件 ox6rR
boolean bStop = false; //停止标志 .DQ]q o]OG
File tmpFile; //文件下载的临时信息 ^#o.WL%4/B
DataOutputStream output; //输出到文件的输出流 u *<
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) %9lxE[/
public SiteFileFetch(SiteInfoBean bean) throws IOException l0_V-|x
{ q
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siteInfoBean = bean; :wZZ 1qa
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); by<2hLB9Q
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); |2# Ro*
if(tmpFile.exists ()) u;!Rv E8N
{ `+uXL9mo
bFirst = false; ~I<y^]2{
read_nPos(); $enh45Wy
} h2>0#Vp3j
else ,&-[$,
{ kD>vQ?
nStartPos = new long[bean.getNSplitter()]; [wR8q,2
nEndPos = new long[bean.getNSplitter()]; U*@_T 3N
} -}J8|gwwp
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} H[r0jREK
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public void run() j66@E\dN
{ #vSI_rt9I
//获得文件长度 b<n)`;
//分割文件 %?fzT+-=%
//实例FileSplitterFetch }>w4!
//启动FileSplitterFetch线程 4Z] 35*
//等待子线程返回 C#Jj;Gd
try{ msylb~ ^
if(bFirst) J^:~#`8
{ d%hA~E1rR
nFileLength = getFileSize(); 3fPv71NVtt
if(nFileLength == -1) A=K1T]o
{ wLbngO=VG
System.err.println("File Length is not known!"); =Ug_1w
} .p`'^$X^
else if(nFileLength == -2) >=H8>X
{ X\%3uPQ
System.err.println("File is not access!"); :+Kesa:E
} 5*$Zfuf
else 2e"}5b5
{ 9x!y.gx
for(int i=0;i<nStartPos.length;i++) _SqrQ
{ v knFtpx
nStartPos = (long)(i*(nFileLength/nStartPos.length)); BE~[%6T7
} ;"Y6&YP<
for(int i=0;i<nEndPos.length-1;i++) #F@7>hd1
{ M6iKl
nEndPos = nStartPos[i+1]; OT i3T1&
} BP$#a
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nEndPos[nEndPos.length-1] = nFileLength; vvxj{fxb)
} 4(82dmKO
} }3 }=tN5
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//启动子线程 1tdCzbEn+
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; vEGK{rMA
for(int i=0;i<nStartPos.length;i++) "=.|QKC1`
{ 5ov%(QI
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :(Bi{cw
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), $Stu-l1e a
nStartPos,nEndPos,i); $P3nP=mf
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [3Rj?z"S
fileSplitterFetch.start(); ?sYjFiE
} &v,p_'k
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Hea<!zPH
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); hT"K}d;X
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", W<"\hQI
nEndPos = " + nFileLength); =L%3q <]p
// fileSplitterFetch[nPos.length-1].start(); [<QWTMjR
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//等待子线程结束 wjOAgOC
//int count = 0; Sj?sw]3
//是否结束while循环 K5&C}Ey1
boolean breakWhile = false; LnS>3$t*
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while(!bStop) VWt'Kx"
{ (+dRD]|T
write_nPos(); vq1&8=
Utility.sleep(500); G`"Cqs<
breakWhile = true; <>_WdAOuD
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for(int i=0;i<nStartPos.length;i++) ~b0qrjF;O
{ WmUW
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if(!fileSplitterFetch.bDownOver) A#&qoZ(C
{ (p=GR#
breakWhile = false; R"`{E,yj
break; :* b4/qpYv
} =fK'Ep[
} om?CFl
if(breakWhile) ~-wJ#E3g
break; X:&p9_O@
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//count++; G6{A[O[
//if(count>4) *J5RueUG
// siteStop(); |wQZ~Ux:
} X388Gs;e
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System.err.println("文件下载结束!"); [nIG_j>D-f
} 389.&`Q%Ut
catch(Exception e){e.printStackTrace ();} 'hw@l>1\9
} U^BXCu1km
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//获得文件长度 cu!bg+,zl
public long getFileSize()
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{ %C0O?q
int nFileLength = -1; UQ])QTrZFi
try{ e uHu}
URL url = new URL(siteInfoBean.getSSiteURL()); GY]6#>D#7
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); % W',c u
httpConnection.setRequestProperty("User-Agent","NetFox"); |!5T+H{Sj
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int responseCode=httpConnection.getResponseCode(); 1[g!^5W
if(responseCode>=400) Fi%W\Y'
{ gzCMJ<3!D
processErrorCode(responseCode);
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return -2; //-2 represent access is error u;ooDIq@
} F%Umau*1
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String sHeader; ^@lg5d3F
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for(int i=1;;i++) wU)5Evp[
{ LiD |4(3
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); LYg$M@
//Utility.log(in.readLine()); RG
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sHeader=httpConnection.getHeaderFieldKey(i); Po11EZa$a
if(sHeader!=null) m4U+,|Fa
{ WfT)CIKs
if(sHeader.equals("Content-Length")) X#I`(iHY
{ m2q;^o:J
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ;AGs1j
break; 3k*:B~1
} U"y'Kd
} _7.GzQJ
else |+xtFe
break; ca3BJWY}J
} )):22}I#
} GHC?Tp
catch(IOException e){e.printStackTrace ();} ^x"c0R^
catch(Exception e){e.printStackTrace ();} <ivqe"m
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Utility.log(nFileLength); u4,X.3V]A
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return nFileLength; 1;:t~Y
} nR@,ouB-$
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//保存下载信息(文件指针位置) =#Cf5s6qt
private void write_nPos() h3]@M$Y[
{ fZV8o$V
try{ 7|M $W(P
output = new DataOutputStream(new FileOutputStream(tmpFile)); U]! .~ji3
output.writeInt(nStartPos.length); xe gL!
for(int i=0;i<nStartPos.length;i++) fJ&<iD)6
{ [zTYiNa
// output.writeLong(nPos); PMN2VzE4{
output.writeLong(fileSplitterFetch.nStartPos); Ns|V7|n]
output.writeLong(fileSplitterFetch.nEndPos); u->@|tEq
} OT}Yr9h4
output.close(); O`[iz/7m
} ;Ma/b= Y
catch(IOException e){e.printStackTrace ();} F'>GN}n
catch(Exception e){e.printStackTrace ();} a j@C0
} Q_]!an(
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//读取保存的下载信息(文件指针位置) N{V5 D
private void read_nPos() bg1"v a#2
{ 1;Wkt9]9
try{ Fi?Q
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); N?=qEX|R
int nCount = input.readInt(); C*EhexK,}
nStartPos = new long[nCount]; 2 ]DCF
nEndPos = new long[nCount]; 7Z`Mt9:Ht
for(int i=0;i<nStartPos.length;i++) N[bRp
{ eC^0I78x
nStartPos = input.readLong(); <5ft6a2fQ
nEndPos = input.readLong(); %eJ\d?nw
} 3r-Vx P 5n
input.close(); I`"-$99|t1
} o[6vxTH
catch(IOException e){e.printStackTrace ();} vTMP&a'5L
catch(Exception e){e.printStackTrace ();} e>,9]{N+$
} 9QOr,~~s
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private void processErrorCode(int nErrorCode) {8{t]LK<
{ 8_<&f%/
System.err.println("Error Code : " + nErrorCode); oP=T6PX~l
} a81!~1A
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//停止文件下载 3b|7[7}&
public void siteStop() o%Uu.P
{ L_Y9+
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bStop = true; )RA\kZ "
for(int i=0;i<nStartPos.length;i++) jiwpDB&