/* WEe7\bWF
**SiteFileFetch.java (@5`beEd
*/ (^y"'B
package NetFox; OVDuF&0
import java.io.*; oV0 45G
import java.net.*; 65qqs|&w;[
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} v:YSG
public class SiteFileFetch extends Thread { Z s=A<[
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SiteInfoBean siteInfoBean = null; //文件信息Bean ty.$H24
long[] nStartPos; //开始位置 ed#fDMXGQ%
long[] nEndPos; //结束位置 ;z.niX .fx
FileSplitterFetch[] fileSplitterFetch; //子线程对象 mu@ J$\
long nFileLength; //文件长度 O_a^|ln&
boolean bFirst = true; //是否第一次取文件 [UI>SN
boolean bStop = false; //停止标志 X1`3KqK<9
File tmpFile; //文件下载的临时信息 4k@n5JNa
DataOutputStream output; //输出到文件的输出流 >d
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Dk^AnMx%_
public SiteFileFetch(SiteInfoBean bean) throws IOException dGBjV #bNT
{ e~zgH\`
siteInfoBean = bean; rY45.,qWs
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); mLZ1u\7W
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); G@`F{l
if(tmpFile.exists ()) 4/`;(*]Fv
{ Z>g>OPu
bFirst = false; rx2'].
read_nPos(); CL1*pL
} |*NZ^6`@
else 8CZfz!2
{ O;<wDh)Yt
nStartPos = new long[bean.getNSplitter()]; ?PMbbqa0
nEndPos = new long[bean.getNSplitter()]; +`k30-<P
} d7vPZ_j^z
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} P\ke%Jdpw?
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public void run() oc( '!c
{ WSH[*jMA
//获得文件长度 u7hu8U=
//分割文件 M@.S Q@E
//实例FileSplitterFetch $YEm(:v$
//启动FileSplitterFetch线程 -9t"$)&
//等待子线程返回 mYgfGPF`
try{ :IS?si5|
if(bFirst) p lnH
{ -t|/g5.w_
nFileLength = getFileSize(); 0d_)C>gcF
if(nFileLength == -1) }OAU5P!rp
{ hbx4[Pf
System.err.println("File Length is not known!"); >z\IO
} C(G.yd
else if(nFileLength == -2) ZgxB7zl//
{ apk,\L@sZ
System.err.println("File is not access!"); hXjZ>n``
} 1 6zxPSTr}
else Ie.
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{ fasWb&~z
for(int i=0;i<nStartPos.length;i++) (O0 Ry2uk
{ |z=`Ur@)
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ct3i^,i
} c}qpmW F
for(int i=0;i<nEndPos.length-1;i++) ZDFq=)0C
{ Qi`3$<W>
nEndPos = nStartPos[i+1]; [Xu8~c X
} bzNnEH`^]
nEndPos[nEndPos.length-1] = nFileLength; ?`U_|Yo
} /fp8tL2Y
} 3E|||3rf
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//启动子线程 -`k>(\Q<d
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 9BtGzI\
for(int i=0;i<nStartPos.length;i++) F5Xb_&
{ TI7$J#
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), )_jboaNzwI
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), _:m70%i
nStartPos,nEndPos,i); A{zqr^/h
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); N3L$"g5^
fileSplitterFetch.start(); NlEyT9
} ~{Iw[,MJ
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), CXrOb+
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); c6xr[tc%
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ZTzec zXpQ
nEndPos = " + nFileLength); 9<_hb1'
// fileSplitterFetch[nPos.length-1].start();
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//等待子线程结束 kzZgNv#G;
//int count = 0; :.+w'SEn4M
//是否结束while循环 {:gx*4}q8
boolean breakWhile = false; ..8t1+S6]
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while(!bStop) J=3{<Xl
{ hH1Q:}a
write_nPos(); _s^tL2Pc
Utility.sleep(500); lKejWT`;
breakWhile = true; k={D!4kKz
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for(int i=0;i<nStartPos.length;i++) SiaNL:
{ .jQx2O
if(!fileSplitterFetch.bDownOver) 4@0aN6Os
{ #7 O7O~
breakWhile = false; e` 4mrBtz|
break; cn} CI
} |M7C=z='
} cj2Smgw&>
if(breakWhile) gtuSJ+up
break; n{4iW_/D
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#g6 _)B=S
//count++; H2jypVs$2
//if(count>4) A5Jadz~
// siteStop(); Dr.eos4 ~
} yf:0u_&]
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System.err.println("文件下载结束!");
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} ompr})c
catch(Exception e){e.printStackTrace ();} 7I[[S!((s
} { }/
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//获得文件长度 nN{DO:_o
public long getFileSize() RkG?R3e
{ \;0pjxq=
int nFileLength = -1; F\JS?zt2
try{ `?$-T5Rr
URL url = new URL(siteInfoBean.getSSiteURL()); QgU]3`z"
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); W@AHE?s6g
httpConnection.setRequestProperty("User-Agent","NetFox"); rB+ (
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int responseCode=httpConnection.getResponseCode(); .vKgiIC:
if(responseCode>=400) r!!uA1!7
{ k5\V:P=#
processErrorCode(responseCode); fh =R
return -2; //-2 represent access is error .$-;`&0cZ
} D/=05E%[81
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String sHeader; ]#M"|iTR
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for(int i=1;;i++) R WY>`.su
{ Bdh*[S\u@E
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); c_qox
//Utility.log(in.readLine()); )$^xbC#j`3
sHeader=httpConnection.getHeaderFieldKey(i); ia\Gmh
if(sHeader!=null) %t&Lq }e
{ h{mzYy}b
if(sHeader.equals("Content-Length")) PNAvT$0LaZ
{ rmw}Ui"
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); qOG@MR(5
break; ByjfPb#
} 15 {^waR6
} 3|$?T|#B
else jW#dUKS(
break; i%133in
} Tr;.%/4Q
} "-S!^h/v
catch(IOException e){e.printStackTrace ();} M
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catch(Exception e){e.printStackTrace ();} +iN!$zF5]
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Utility.log(nFileLength); lJAzG,f
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return nFileLength; 4mY^pQ1=L
} EO+Ix7w
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//保存下载信息(文件指针位置) MMa`}wSs
private void write_nPos() g s1
{ |6-9vU!LK?
try{ 60~*$`
output = new DataOutputStream(new FileOutputStream(tmpFile)); /TbJCZ
output.writeInt(nStartPos.length); MDa[bQNM
for(int i=0;i<nStartPos.length;i++) ZOqA8#\
{ *><j(uz!
// output.writeLong(nPos);
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output.writeLong(fileSplitterFetch.nStartPos); |8}y?kAC
output.writeLong(fileSplitterFetch.nEndPos); BpA7
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} KD#zsL)3
output.close(); >;G_o="X
} L`M{bRl+1
catch(IOException e){e.printStackTrace ();} !(bYh`Uy
catch(Exception e){e.printStackTrace ();} W9gQho%9b
} ;Uch
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//读取保存的下载信息(文件指针位置) 5Zc
private void read_nPos() 8Ie0L3d-
{ |qpm
try{ @I Y<i5(
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Flpl,|n
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int nCount = input.readInt(); ST#)Fl
nStartPos = new long[nCount]; 1;./e&%%
nEndPos = new long[nCount]; b?=r%D->w
for(int i=0;i<nStartPos.length;i++) :fX61S6)
{ ce4rhtkV
nStartPos = input.readLong(); q@1A2L\Om
nEndPos = input.readLong(); bg3kGt0
} c5f57Z
input.close(); 49/2E@G4.
} aEQrBs
catch(IOException e){e.printStackTrace ();} dG3?(}p+
catch(Exception e){e.printStackTrace ();} w2 (}pz:
} unYPvrd
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private void processErrorCode(int nErrorCode) ,-d2wzhW
{ :;#^gvH
System.err.println("Error Code : " + nErrorCode); *>iJ=H
} M2:3k
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//停止文件下载 !pa7]cZ
public void siteStop() .}R'(gN\6
{ mFpj@=^_G
bStop = true; *s1o?'e
for(int i=0;i<nStartPos.length;i++) V'.gE6we
fileSplitterFetch.splitterStop(); %D7^.
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} UT_t]m
} w0>5#jq#r
//负责部分文件的抓取 R $/q=*k
**FileSplitterFetch.java ;rh=63g
*/ H6#SP~V
package NetFox; kYS\TMt,C
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import java.io.*; zS\m8[+]
import java.net.*; @$ )C pg
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public class FileSplitterFetch extends Thread { + L5
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String sURL; //File URL Wu?[1L:x
long nStartPos; //File Snippet Start Position n 8|
long nEndPos; //File Snippet End Position xNVSWi,
int nThreadID; //Thread's ID j~ qm5}
boolean bDownOver = false; //Downing is over toox`|
boolean bStop = false; //Stop identical T6,6lll
FileAccessI fileAccessI = null; //File Access interface |R Qa.^.
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException BI6`@}%7>
{ 1UH_"Q03
this.sURL = sURL; R<>uCF0
this.nStartPos = nStart; YH[HJ#:7r
this.nEndPos = nEnd; wlX
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nThreadID = id; `\-mqe
fileAccessI = new FileAccessI(sName,nStartPos);//定位 apm,$Vvjy
} 6;\Tps;A
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public void run() "8yDqm
{ k*T&>$k}^
while(nStartPos < nEndPos && !bStop) "CT`]:GGK
{ ^W,x
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try{ QtqE&j
URL url = new URL(sURL);
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); gG6BEsGa,
httpConnection.setRequestProperty("User-Agent","NetFox"); BG@[m
String sProperty = "bytes="+nStartPos+"-"; ]FO)U
httpConnection.setRequestProperty("RANGE",sProperty); xHwcP2 1
Utility.log(sProperty); A `=.F
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InputStream input = httpConnection.getInputStream(); }D#[yE,=\
//logResponseHead(httpConnection); q}7(w$&
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byte[] b = new byte[1024]; cU=/X{&Om
int nRead; (@u"
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) v%2Jm!i+
{ o7 X5{
nStartPos += fileAccessI.write(b,0,nRead); u!VY6y7p
//if(nThreadID == 1) ;hU~nj+{
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ZGWZ2>k
} Q-S5("
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Utility.log("Thread " + nThreadID + " is over!"); so\8.(7n
bDownOver = true; xHdv?69,
//nPos = fileAccessI.write (b,0,nRead); !p"Ijz5
} {nmBIk2v
catch(Exception e){e.printStackTrace ();} x\XOtjJr
} 0Z~G:$O/i
} y <21~g=
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//打印回应的头信息 SSI('6Z/
public void logResponseHead(HttpURLConnection con) #kDJ>r |&-
{ ~Aq$GH4
for(int i=1;;i++) %L;'C
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{ +LAj h)m
String header=con.getHeaderFieldKey(i); lilF _y
if(header!=null) XB-l[4?
//responseHeaders.put(header,httpConnection.getHeaderField(header)); _:,U$W
Utility.log(header+" : "+con.getHeaderField(header)); H;eOrX{GT
else f0lK,U@P
break; ns[Q %_
} W_N!f=HW
} 4wQ>HrS)(
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public void splitterStop() S~LTLv:>
{ o5 eFLJ6
bStop = true; Nl `8Kcv
} E; Z1HF
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} r6eApKZ>f6
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/* WKPuIE:
**FileAccess.java Fs EPM"&?h
*//文件访问(定位,写) A `n:q;my
package NetFox; {]\!vG6
import java.io.*; 14v,z;HXj
=:-x;
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public class FileAccessI implements Serializable{ #/Qe7:l
%@Ty,d:;=
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 (Q09$
RandomAccessFile oSavedFile; FO5'<G-
long nPos; 55T c
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public FileAccessI() throws IOException Lcyj,R
{ $VCWc#
this("",0); #e8NF,H5
} KzC`*U[
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public FileAccessI(String sName,long nPos) throws IOException /P/S0
{ Ug^v
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oSavedFile = new RandomAccessFile(sName,"rw"); "xV9$m>
this.nPos = nPos; &