/* :EJ+#
**SiteFileFetch.java x=pq-&9>B
*/ 6Z] * ce<r
package NetFox; Y,RBTH
import java.io.*; t4R=$
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import java.net.*; +/'3=!oyd
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public class SiteFileFetch extends Thread { R3`!Xj#&M
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SiteInfoBean siteInfoBean = null; //文件信息Bean _5uzu6:y
long[] nStartPos; //开始位置 5 6;lB$)"
long[] nEndPos; //结束位置 Cb~_{$ A
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Q&}`( ]k
long nFileLength; //文件长度 -&I)3
boolean bFirst = true; //是否第一次取文件 R*3x{DNL
boolean bStop = false; //停止标志 ]mYT!(}
File tmpFile; //文件下载的临时信息 v)mO"\
DataOutputStream output; //输出到文件的输出流 ZW{pO:-
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _5 Zhv-7
public SiteFileFetch(SiteInfoBean bean) throws IOException p}$VBl$'
{ BUqe~E|I
siteInfoBean = bean; 8<#X]I_eP+
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); W-ErzX
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 5(R ./
if(tmpFile.exists ()) u=I \0H
{ N2[EdOJT_
bFirst = false; 2fM*6CaS
read_nPos(); GLrHb3@"N
} bx`s;r=
else tn&~~G~#
{ 8x#SpDI
nStartPos = new long[bean.getNSplitter()]; 5TqB&GP0
nEndPos = new long[bean.getNSplitter()]; :QT0[P5O
} 0l=g$G
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public void run() #!(OTe L
{ 6}zargu(;
//获得文件长度 ,)^4H>~V
//分割文件 OBp<A+a
//实例FileSplitterFetch BO)K=gl;8
//启动FileSplitterFetch线程 c@!%.# |y
//等待子线程返回 ltRvNXx+]
try{ [(Ss^?AJW
if(bFirst) FMMQO,BU
{ .G8+D%%.
nFileLength = getFileSize(); ANh7`AUuO
if(nFileLength == -1) {,61V;Bpm
{ [9dW9[Z+!
System.err.println("File Length is not known!"); ,$BbJQ5
} h8OmO5/H
else if(nFileLength == -2) qP=4D
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System.err.println("File is not access!"); L6S!?t.{Yv
} vDl6TKXcu
else _P9Th#UAg
{ ,U':=8
for(int i=0;i<nStartPos.length;i++) !lf'gW
{ Sxo9y0K8-
nStartPos = (long)(i*(nFileLength/nStartPos.length)); oRmz'F
} =g)|g+[H
for(int i=0;i<nEndPos.length-1;i++) RS'!>9I
{ }j9V0`Q
nEndPos = nStartPos[i+1]; d/oxRzk'L
} ,ND}T#yTR
nEndPos[nEndPos.length-1] = nFileLength; +72[*_ <
} xaiA2
} gbF^m`A>%+
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//启动子线程 v53qpqc
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Ovu!G
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for(int i=0;i<nStartPos.length;i++) [AgS@^"sf5
{ 6bj.z
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Fv_rDTo
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), *Xm$w
nStartPos,nEndPos,i); {oQ.y
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); -:Up$6PR
fileSplitterFetch.start(); "\0&1C(G
} ;.*n77Y
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), o ;nw;]oR
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); <Sw>5M!j
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", DLMM1
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nEndPos = " + nFileLength); rZ}y'A
// fileSplitterFetch[nPos.length-1].start(); ';<gc5EK
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//等待子线程结束 cbsU!8
//int count = 0; |-kU]NJFR
//是否结束while循环 }AdA?
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boolean breakWhile = false; 9[#9cv
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while(!bStop) Z:51Q
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write_nPos(); p) #7K
Utility.sleep(500); )q#1C]7m*
breakWhile = true; cO}`PD$i
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for(int i=0;i<nStartPos.length;i++) X'BFR]cm
{ ca~nfo
if(!fileSplitterFetch.bDownOver) t\&u
{ T.m*LM
breakWhile = false; '#JC 6#X
break; MA9Oi(L)K
} !8'mIXZ$
} B[2 qI7D$
if(breakWhile) qo,uOi
break; eRV4XB :
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//count++; k.UQT^.
//if(count>4) >SS
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// siteStop(); NFDh!HUm
} b=Rw=K.
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System.err.println("文件下载结束!"); CVo2?ZQ
} zB,Vi-)vH
catch(Exception e){e.printStackTrace ();}
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} P[E:=p
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//获得文件长度 TCb 7-s
public long getFileSize() Z+# =]Kw)
{ ^Bkwbj
int nFileLength = -1; `R\aNgCS}
try{ S(bYN[U
URL url = new URL(siteInfoBean.getSSiteURL()); RZKdh}B?\
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 2h Wtpus
httpConnection.setRequestProperty("User-Agent","NetFox"); A}./ ;[
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int responseCode=httpConnection.getResponseCode(); WX2:c,%:
if(responseCode>=400) ey icMy`7{
{ ?ks3K-.4
processErrorCode(responseCode); #2&DDy)Bf
return -2; //-2 represent access is error 2@&|/O6_\h
}
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String sHeader; 1Z.
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for(int i=1;;i++) ;;A8*\*$
{ /iz{NulOz*
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); /Mac:;W`
//Utility.log(in.readLine()); 4<P=wK=a8X
sHeader=httpConnection.getHeaderFieldKey(i); u1@&o9
if(sHeader!=null) x:Mh&dq?
{ -o\o{?t,
if(sHeader.equals("Content-Length")) '{e9Vh<x
{ pb>TUKvT&
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 6oh\#v3zV
break; :K-05$K
} gd#j{yI/Xf
} dp&8:jy
else "'#18&N
break; H]^hEQ3DT
} w+,Kpb<x[0
} ,RP"m#l!\
catch(IOException e){e.printStackTrace ();} G&eRhif
catch(Exception e){e.printStackTrace ();} LIm{Y`XU
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Utility.log(nFileLength); ](^$5Am
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return nFileLength; 4Z'/dI`
} he/WqCZg
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//保存下载信息(文件指针位置) E ISgc {s
private void write_nPos() 3I}(as{Rp
{ !]^,!7x,8j
try{ #pe#(xoI
output = new DataOutputStream(new FileOutputStream(tmpFile)); ?%QWpKO7X
output.writeInt(nStartPos.length); ]npsclvJ
for(int i=0;i<nStartPos.length;i++) .dbZ;`s
{ O_gr{L}
// output.writeLong(nPos); 0@O:C::
output.writeLong(fileSplitterFetch.nStartPos); >g {w,
output.writeLong(fileSplitterFetch.nEndPos); b8QQS#q)V
} }jfOs(Q]
output.close(); xOKLc!J
} -[h2fqu1
catch(IOException e){e.printStackTrace ();} YI877T9>
catch(Exception e){e.printStackTrace ();} <l#|I'hP
} }fS`jq;
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//读取保存的下载信息(文件指针位置) @Rc/^B:
private void read_nPos() LBcnBo</v
{ ?j'Nx_RoX
try{ Ht{Q=w/9
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); <6!;mb
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int nCount = input.readInt(); ?QJS6i'k
nStartPos = new long[nCount]; hggP9I:s,
nEndPos = new long[nCount]; zp4aiMn1F
for(int i=0;i<nStartPos.length;i++) Rhfx
{ 6h?v/\
nStartPos = input.readLong(); )\`.Ru~,
nEndPos = input.readLong(); bjR:5@"
} b6]MJ0do
input.close(); 3dl#:Si
} bXiOf#:''
catch(IOException e){e.printStackTrace ();} k}0Y&cT!rU
catch(Exception e){e.printStackTrace ();} 3QD+&9{D
} /s/\5-U7q
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private void processErrorCode(int nErrorCode) o0Z~9iF&
{ ep ,"@,,
System.err.println("Error Code : " + nErrorCode); C>MEgGP
} p%ve1>c
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//停止文件下载 ;2&ym)`
public void siteStop() N=vb*3ECg
{ _nn\O3TB
bStop = true; U8>M`e"D
for(int i=0;i<nStartPos.length;i++) 'joc8o sS
fileSplitterFetch.splitterStop(); @5=2+ M
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} ;ndwVZ~,
} {:%A
//负责部分文件的抓取 #Wf9`
**FileSplitterFetch.java !gyEw1Re7
*/ ?=},%^
package NetFox; ~MpcVI_K
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import java.io.*; aAi"
import java.net.*; U+4W9zhwo
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public class FileSplitterFetch extends Thread { pm4'2B|)g
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String sURL; //File URL =[
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long nStartPos; //File Snippet Start Position -50Nd=1
long nEndPos; //File Snippet End Position fZ6-ap,u
int nThreadID; //Thread's ID ,q".d =6
boolean bDownOver = false; //Downing is over eoGGWW@[
boolean bStop = false; //Stop identical yGs:3KI
FileAccessI fileAccessI = null; //File Access interface jE#&u DfI
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException \'>8 (i~
{ Rf4}4ixkj
this.sURL = sURL; #;lB5) oe
this.nStartPos = nStart; !RPPwvNk4
this.nEndPos = nEnd; h!!7LPxt
nThreadID = id; Kqn{q4L
fileAccessI = new FileAccessI(sName,nStartPos);//定位 -qDM(zR
} RAs5<US:
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public void run() 0]u=GD%
{ u,88V@^
while(nStartPos < nEndPos && !bStop) C4h4W3w
{ aj|gt
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try{ {0IC2jE
URL url = new URL(sURL); M~O$,dof
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 5;:964Et
httpConnection.setRequestProperty("User-Agent","NetFox"); [$]Kp9YD
String sProperty = "bytes="+nStartPos+"-"; g-NfZj?
httpConnection.setRequestProperty("RANGE",sProperty); =
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Utility.log(sProperty); `*ml/% \
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InputStream input = httpConnection.getInputStream(); "3H?_!A9
//logResponseHead(httpConnection); wc~k4B9"
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byte[] b = new byte[1024]; :&-j{8p-
int nRead; |WUm;o4E`U
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ln&9WF\I
{ 3x6@::s~
nStartPos += fileAccessI.write(b,0,nRead); AfaoFn+
//if(nThreadID == 1) Z{p62|+Ck@
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ;#+Se,)
} {[tx^b
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Utility.log("Thread " + nThreadID + " is over!"); UPr8Q^wm
bDownOver = true; g>&b&X&Y_
//nPos = fileAccessI.write (b,0,nRead); QP={b+8
} ,>vI|p,/G*
catch(Exception e){e.printStackTrace ();} :h!&.FB
} ;R4qE$u2^
} JZom#A.
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//打印回应的头信息 ns}"[44C}l
public void logResponseHead(HttpURLConnection con) q*pWx]Y
{ ><