/* W _b!FQ]
**SiteFileFetch.java TKH!,Ow9A
*/ s2Rg-:7
package NetFox; 2K:Rrn/cR
import java.io.*; 6[x6:{^J
import java.net.*; [[XbKg`"?
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public class SiteFileFetch extends Thread { 57|RE5]|!
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SiteInfoBean siteInfoBean = null; //文件信息Bean 2/dvCt6 N
long[] nStartPos; //开始位置 x&
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long[] nEndPos; //结束位置 M7`iAa.}
FileSplitterFetch[] fileSplitterFetch; //子线程对象 B0+r
long nFileLength; //文件长度 `*Ju0)g1
boolean bFirst = true; //是否第一次取文件 1Zo"Xb
boolean bStop = false; //停止标志 8pXului
File tmpFile; //文件下载的临时信息 /LK,:6
DataOutputStream output; //输出到文件的输出流 2%Mgg,/~
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) [ !<
public SiteFileFetch(SiteInfoBean bean) throws IOException 0Z4o3r[
{ w;p~|!
siteInfoBean = bean; uN;]Fv@Z
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Ss~yy0
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); b#
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if(tmpFile.exists ()) gm8FmjZtf
{ 'kb|!
bFirst = false; -\|S=<
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read_nPos(); |Y tZOQu
} Lk8[fFa4
else h uIvXl
{ lKSd]:3Xm
nStartPos = new long[bean.getNSplitter()]; BcaX:C?f
nEndPos = new long[bean.getNSplitter()]; dCn'IM1
} *Y]()#?Gr
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} I xk+y?
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public void run() (#Ku`
{ $8{v_2C){
//获得文件长度 ^q}cy1"j"
//分割文件 zgn~UC6&
//实例FileSplitterFetch oMeIXb)z
//启动FileSplitterFetch线程 Oz1S*<]=,~
//等待子线程返回 b haYbiX?
try{ gp(: o$
if(bFirst) f&2f8@
{ eqQ=HT7J
nFileLength = getFileSize(); [bh8Nj\E
if(nFileLength == -1) /^\UB
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{ U9t-(`[j?
System.err.println("File Length is not known!"); %] #XI r
} SL$ bV2T
else if(nFileLength == -2) GwM(E^AG
{ 2A(?9
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System.err.println("File is not access!"); YIn
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} oYR OGU
else [))TL
{ ),rd7GB>
for(int i=0;i<nStartPos.length;i++) RQO&F$R=
{ :~wU/dEEiz
nStartPos = (long)(i*(nFileLength/nStartPos.length)); SCL8.%z D
} /v-:ca)7mI
for(int i=0;i<nEndPos.length-1;i++) IBm"VCg{Ew
{ |kc#=b@l
nEndPos = nStartPos[i+1]; sNHxUI
} FQe82tfV+
nEndPos[nEndPos.length-1] = nFileLength; ;6655C
} ~cH3RFV
} AI,Jy%62/
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//启动子线程 vE{L `,\q
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; $2/v8
for(int i=0;i<nStartPos.length;i++) ]L/AW
{ U9(p ^
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ! _p(H
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), vw)lD9-"
nStartPos,nEndPos,i); vAcxca">S
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); |w+N(wcJ
fileSplitterFetch.start(); Q4h6K7
} FMEW['
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), k0@*Up3{7
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); BN%;AQV
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ^-2|T__
nEndPos = " + nFileLength); M]7>Ar'zsG
// fileSplitterFetch[nPos.length-1].start(); 3R&
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//等待子线程结束 /8Ru O
//int count = 0; 0BrAgv"3a_
//是否结束while循环 $_f"NE}
boolean breakWhile = false; .I %`yhCW
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while(!bStop) kHb H{])
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write_nPos(); <c.8f;1F
Utility.sleep(500); T)o>U&KNP
breakWhile = true; ]114\JE
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for(int i=0;i<nStartPos.length;i++) m <'&`B;
{ <`?V:};Q
if(!fileSplitterFetch.bDownOver) qAW?\*n5N
{ TD-o-*mO
breakWhile = false; EECuJ+T
break; 2(i|n=
} `e4gneQY
} sd&^lpH
if(breakWhile) F[)5A5+:Y
break; b6UpE`\z
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//count++;
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//if(count>4) 3eERY[
// siteStop(); pD17r}%
} XiO~^=J
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System.err.println("文件下载结束!"); {RC&Ub>
} :5[1Iepdn
catch(Exception e){e.printStackTrace ();} K_ Od u^
} v3b+Ddp
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//获得文件长度 He*c=^8k
public long getFileSize() ]Ns)fr6
{ xG WA5[YV
int nFileLength = -1; 2D2}
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try{ Q!y%N&
URL url = new URL(siteInfoBean.getSSiteURL()); `8/D$
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); J%FF@.)k
httpConnection.setRequestProperty("User-Agent","NetFox"); ~@$RX:p
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int responseCode=httpConnection.getResponseCode(); 7yQw$zG,Iz
if(responseCode>=400) |8?DQhd}
{ x|$|~6f=n
processErrorCode(responseCode); 0k G\9
return -2; //-2 represent access is error +~$pkxD"
} gy Ey=@L
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String sHeader; |B
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for(int i=1;;i++) ]
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{ N/78Ub
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); k~*%Z!V}C
//Utility.log(in.readLine()); .Ta (v3om%
sHeader=httpConnection.getHeaderFieldKey(i); ]d~2WX Y
if(sHeader!=null) 89x;~D1
{ ?$#P
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if(sHeader.equals("Content-Length")) ;EQ7kuJQ?
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader));
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break; G!+Mu2
} $!$,cKPl5
} &dG^ M2g-F
else >hY.F/[
break; /2'l=R5#
} A(*c|Aj9
} "7Z-ACyF5
catch(IOException e){e.printStackTrace ();} *x:*Q \|
catch(Exception e){e.printStackTrace ();} mKsJ[)#.
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Utility.log(nFileLength); HR;I}J 9
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return nFileLength; 55FRPNx-x
} @'<=EAXe
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//保存下载信息(文件指针位置) Zs4NN2~
private void write_nPos() wjfq"7Q
{ 8S7#tb@3
try{ K#Zv>x!to
output = new DataOutputStream(new FileOutputStream(tmpFile)); iK=QP+^VN
output.writeInt(nStartPos.length); '<s54 Cb
for(int i=0;i<nStartPos.length;i++) J0Gjo9L
{ \ CX6~
// output.writeLong(nPos); 2u$rloc$b
output.writeLong(fileSplitterFetch.nStartPos); _F5*\tQ
output.writeLong(fileSplitterFetch.nEndPos); ( k,?)
} 0xY</S
output.close(); p zZ+!d
} 9Dbbk/j|
catch(IOException e){e.printStackTrace ();} }3_>
catch(Exception e){e.printStackTrace ();} 7"F29\
} _u]%K-_
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//读取保存的下载信息(文件指针位置) "n_X4e+18P
private void read_nPos() pD('6C;
{ !hFhw1
try{ G\o9mEzQ
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); J;=T"C&
int nCount = input.readInt(); c8T| o=`k6
nStartPos = new long[nCount]; }[R-)M
nEndPos = new long[nCount]; 53 -Owjpx
for(int i=0;i<nStartPos.length;i++) )KEW`BC5T
{ H'JU5nE
nStartPos = input.readLong(); 4,>9N9.?9
nEndPos = input.readLong(); P)cEYk
} F0~<p[9Nx
input.close(); &B]1 VZUp
} 9VanR
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catch(IOException e){e.printStackTrace ();} :yRv:`r3Lt
catch(Exception e){e.printStackTrace ();} 2$ &B@\WY
} lu8*+.V
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private void processErrorCode(int nErrorCode) k?$I4&|5Nt
{ Cv}^]_`Q
System.err.println("Error Code : " + nErrorCode); YN+vk}8 <
} a{@}vZx>3
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//停止文件下载 L^r & .N\
public void siteStop() }8POm#
{ NJ]3qH
bStop = true; a9UXg<4
for(int i=0;i<nStartPos.length;i++) Vn_~ |-Wt
fileSplitterFetch.splitterStop(); Kk*8
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} uovv">Uw
} N/ f7"~+`
//负责部分文件的抓取 6]4#8tR1_
**FileSplitterFetch.java Nk<^ Qv
*/ 4"_`Mu_%
package NetFox; {0j_.XZ
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import java.io.*; bK.*v4RG
import java.net.*; WN<g _8QR
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public class FileSplitterFetch extends Thread { Bp3E)l
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String sURL; //File URL uKd4+Km
long nStartPos; //File Snippet Start Position DY9]$h*y
long nEndPos; //File Snippet End Position ]8}51y8
int nThreadID; //Thread's ID +[<YE
boolean bDownOver = false; //Downing is over AYgXqmH~+
boolean bStop = false; //Stop identical fCwE1r*^
FileAccessI fileAccessI = null; //File Access interface DU0/if9.
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException :aK?Dt Z
{ :8!RGtn
this.sURL = sURL; jn:_2g[
this.nStartPos = nStart; |K"Q>V2y
this.nEndPos = nEnd; ZZ7qSyBs?
nThreadID = id; 7/
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 MUAs(M;
} ,wwO0,"y7
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public void run() An$2='=/
{ xC,x_:R`
while(nStartPos < nEndPos && !bStop) bh<;px-
{ fEX=csZ86
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try{ aL( hWE
URL url = new URL(sURL); 1[^YK6a/
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); vWZXb`
httpConnection.setRequestProperty("User-Agent","NetFox"); qD4]7"9
String sProperty = "bytes="+nStartPos+"-"; S0)JIrrHC
httpConnection.setRequestProperty("RANGE",sProperty); &CQO+Yr$l
Utility.log(sProperty); z@i4
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InputStream input = httpConnection.getInputStream(); D]]wJQU2
//logResponseHead(httpConnection); viG,z4Zf
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byte[] b = new byte[1024]; L%T(H<