/* jQz^)8)B
**SiteFileFetch.java g3vbskY|
*/ `ba<eT':
package NetFox; >op/<?<
import java.io.*; NR&a
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import java.net.*; X`v6gv5qj
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public class SiteFileFetch extends Thread { SK/}bZ;f
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SiteInfoBean siteInfoBean = null; //文件信息Bean -KbO[b\V
long[] nStartPos; //开始位置 8Dxg6>
long[] nEndPos; //结束位置 [Z'4YXS
FileSplitterFetch[] fileSplitterFetch; //子线程对象 2>x[_
long nFileLength; //文件长度 /^{Q(R(X<
boolean bFirst = true; //是否第一次取文件 *a_QuEw_k
boolean bStop = false; //停止标志 .'+JA:3R
File tmpFile; //文件下载的临时信息 b)XGr?
DataOutputStream output; //输出到文件的输出流 ZA_~o#0%
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) >>R)?24,<
public SiteFileFetch(SiteInfoBean bean) throws IOException ;1,#rTs
{ ZFX}=?+
siteInfoBean = bean; :+^`VLIf
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); WH $*\IGJL
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); *x#5S.i1
if(tmpFile.exists ()) ?OO !M
{ `ALQSo~l
bFirst = false; u0+<[Ia'q
read_nPos(); 2"xhFxoD7
} _6n za)OFH
else @$QtY(a
{ hI<$lEB
nStartPos = new long[bean.getNSplitter()]; c&RiUU7
nEndPos = new long[bean.getNSplitter()]; R 'mlKe x
} RvVF^~u
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public void run() s5d[sx
{ 9%P$e=Ui#
//获得文件长度 '+^XL6$L
//分割文件 -Vg0J6x
//实例FileSplitterFetch UU =,Brb
//启动FileSplitterFetch线程 pek5P4W_
//等待子线程返回 sh<JB`^$(?
try{ 8p~[8}
if(bFirst) tnmz5Q
{ ac4dIW{$3
nFileLength = getFileSize(); y(K:,CI
if(nFileLength == -1) b$Bq#vdg:
{ <C*%N;F5R
System.err.println("File Length is not known!"); P!~&Ei
} 2)^T[zHe
else if(nFileLength == -2) [S`Fm>,
{ h2]GV-
System.err.println("File is not access!"); l`K5fk
} 7x
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else P/9|mYmsq
{ !G~\9
for(int i=0;i<nStartPos.length;i++) {\!@k\__
{ ol4!#4Y&{
nStartPos = (long)(i*(nFileLength/nStartPos.length)); oB}rd9
} \HJ t }
for(int i=0;i<nEndPos.length-1;i++) G! ryW4
{ zgpvI~Ck
nEndPos = nStartPos[i+1]; ~]K<Vh`
} 37,)/8]lG
nEndPos[nEndPos.length-1] = nFileLength; /z,+W9`
} oP<E)
} eY$Q}BcW
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//启动子线程 W.b?~
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; U./1OZ&
for(int i=0;i<nStartPos.length;i++) %eqL)pC]
{ z?_5fte`
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .Wci@5:3
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), kObgoMT<[
nStartPos,nEndPos,i); b9Ix*!Y
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 5adB5)`
fileSplitterFetch.start(); 1Yv#4t
} _{?/4ZhA\+
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), obIYC
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); h@?BA<'S
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", RE:$c!E!
nEndPos = " + nFileLength); Riz!HtyR
// fileSplitterFetch[nPos.length-1].start(); &4l>_
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//等待子线程结束 </d&bS
//int count = 0; Rh#TR"
//是否结束while循环 EabZ7zFoN
boolean breakWhile = false; ~rU{Q>c
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while(!bStop) nR~L$Wu5_a
{ (hX}O>
write_nPos(); & 5YI!; q,
Utility.sleep(500); al\ R(\p|
breakWhile = true; cvf#^Cu
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for(int i=0;i<nStartPos.length;i++) C,m
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{ 4q5bW+$Xj
if(!fileSplitterFetch.bDownOver) ?l<u %o
{ n\y%5J+
breakWhile = false;
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break; ((%g\&D
} ^t\AB)(8
} rRZ ,X%
if(breakWhile) sh"\ kk9
break; 7e-l`]
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//count++; !M&B=vk4
//if(count>4) G(~"Zt}?
// siteStop(); (yel
} Ea*Jl<
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System.err.println("文件下载结束!"); 3l@={Ts
} 0zAj.iG
catch(Exception e){e.printStackTrace ();} L);kwx7{LW
} /TgG^|
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//获得文件长度 ~?{"H<
public long getFileSize() B/CP/Pfb
{ ;2;Kq)j_=
int nFileLength = -1; '
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try{ <4Jo1
URL url = new URL(siteInfoBean.getSSiteURL()); 8BZDaiE"
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); S|%f<zAtJ
httpConnection.setRequestProperty("User-Agent","NetFox"); "syf@[tz7
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int responseCode=httpConnection.getResponseCode(); b|*A%?m
if(responseCode>=400) |3MqAvPJ
{ i.Qy0
processErrorCode(responseCode); ` 0k
return -2; //-2 represent access is error LPk85E
} \TrhJ
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String sHeader; _6
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for(int i=1;;i++) &6E^<v?]
{ Gu:aSb
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); s3G3_&
//Utility.log(in.readLine()); Q[y75 [
sHeader=httpConnection.getHeaderFieldKey(i); g9;}?h
if(sHeader!=null) }_L@CpG
{ v:<UbuJw
if(sHeader.equals("Content-Length")) KPUc+`cN%
{ &k?Mt#J
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); <c{RY.1[
break; -_ [Z5%B
} #$Z|)i]w
} 94F9f^ L
else j%KLp4J/e
break; SA|f1R2uS
} -<i&`*zG
} fV_(P_C
catch(IOException e){e.printStackTrace ();} , c/\'k\K)
catch(Exception e){e.printStackTrace ();} _Ucj)Ud k
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Utility.log(nFileLength); 9 frS!AQ
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return nFileLength; q7wd9 6G:
} Tp`by
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//保存下载信息(文件指针位置) -iS\3P.
private void write_nPos() u[^(s_
{ ?iUAzM8
try{ Y2w 9]:J
output = new DataOutputStream(new FileOutputStream(tmpFile)); M*E4:A9_M
output.writeInt(nStartPos.length); ZSMOq4Y 9
for(int i=0;i<nStartPos.length;i++)
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{ fdCsn:
// output.writeLong(nPos); .c+RFX@0
output.writeLong(fileSplitterFetch.nStartPos); LeY\{w
output.writeLong(fileSplitterFetch.nEndPos); HT5G HkT
} ])a?ri
output.close(); ]RQQg,|D
} A[ ZJS
catch(IOException e){e.printStackTrace ();} _#e='~;
catch(Exception e){e.printStackTrace ();} bI=\n)sEz
} z1F[okLA
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//读取保存的下载信息(文件指针位置) s&M6DFlA
private void read_nPos() Q/=L(_1l
{ pP)0 l
try{ /H,!7!6>?
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); j+J)S1
int nCount = input.readInt(); Zi2NgVF
nStartPos = new long[nCount]; C 9,p-
nEndPos = new long[nCount]; vu YH+
for(int i=0;i<nStartPos.length;i++) t4UKG&[a
{ iR(A^
nStartPos = input.readLong(); {`~{%2ayq7
nEndPos = input.readLong(); ts%@1Y?
} S0g5Ym
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input.close(); Ps.O.2Z5ZB
} uyxU>yHV<g
catch(IOException e){e.printStackTrace ();} 4fZ$&)0&
catch(Exception e){e.printStackTrace ();} yc4mWB~gyU
} rGRxofi.
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private void processErrorCode(int nErrorCode) yGH'|`
{ ZqkP# ]+Y'
System.err.println("Error Code : " + nErrorCode); JQE^ bcr
} .7Ys@;>B
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//停止文件下载 #*
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public void siteStop() )AqM?FE4R
{ OtF{=7
bStop = true; r&xqsZ%R
for(int i=0;i<nStartPos.length;i++) #v')iR"
fileSplitterFetch.splitterStop(); {`KgyCW:
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} <Ky\ ^
} s+tS4E?
//负责部分文件的抓取 I1&Z@[
**FileSplitterFetch.java <k5FlvE2
*/ $ZXy&?4
package NetFox; _W]2~9
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import java.io.*; bu%@1:l
import java.net.*; )Bl% {C
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public class FileSplitterFetch extends Thread { [t<^WmgtxL
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String sURL; //File URL Q9 kKk
long nStartPos; //File Snippet Start Position ^;NM'Z
long nEndPos; //File Snippet End Position 1B6Go
int nThreadID; //Thread's ID ;MCv
boolean bDownOver = false; //Downing is over dj?.Hc7od
boolean bStop = false; //Stop identical u-pE
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FileAccessI fileAccessI = null; //File Access interface _w^p~To^
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 5gGYG]*l
{ v.cB3/$z
this.sURL = sURL; Nb#E+\q
this.nStartPos = nStart; c"H4/,F
this.nEndPos = nEnd; GfJm&'U&
nThreadID = id; U-3KuR+0
fileAccessI = new FileAccessI(sName,nStartPos);//定位 &EXql']
} .pi#Z/v
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public void run() 2j4VW0:
{ X||oiqbY
while(nStartPos < nEndPos && !bStop) v=i[s
{ .+ai
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try{ cpFw]w%]
URL url = new URL(sURL); kdQ=%
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); E^1uZI\z
httpConnection.setRequestProperty("User-Agent","NetFox"); o,D>7|h
String sProperty = "bytes="+nStartPos+"-"; {^"c>'R
httpConnection.setRequestProperty("RANGE",sProperty); }N2T/U
Utility.log(sProperty); nrwb6wj
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InputStream input = httpConnection.getInputStream(); 6peO9]Zy
//logResponseHead(httpConnection); Nh]eZ3O
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byte[] b = new byte[1024]; O jE wJ$$
int nRead; !z(POK
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) bW3e*O$V
{ Bu>srX9f
nStartPos += fileAccessI.write(b,0,nRead); )f(#Fn
//if(nThreadID == 1) ;'}1
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 4rwfY<G
} @ L% 3}
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/Kwo^Q{
Utility.log("Thread " + nThreadID + " is over!"); &UbNp8h
bDownOver = true; exTpy
//nPos = fileAccessI.write (b,0,nRead); eO(VSjo'`
}
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catch(Exception e){e.printStackTrace ();} 9!_`HE+(XJ
} Z\(+awv
} D
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//打印回应的头信息 GLnj& Ve
public void logResponseHead(HttpURLConnection con) %OfaBv&
{ w;}P<K
for(int i=1;;i++) ztgSd8GGE
{ yew9bn0a=
String header=con.getHeaderFieldKey(i); B\KvKT|\
if(header!=null) 3UslVj1u
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 1f~unb\Gg
Utility.log(header+" : "+con.getHeaderField(header)); o`M7:8G
else Xy_+L_h^
break; Z7K;~*
} #XQEfa
} C[& \Xq
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public void splitterStop() b0PF7PEEQ
{ {]Nvq9?
bStop = true; x}AWWmXv
} y*vs}G'W
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} 1q}iUnR
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/* Iy8Ehwejd
**FileAccess.java \uQ(-ji
*//文件访问(定位,写) 2e/ JFhA
package NetFox; DFVaZN?~
import java.io.*; r*&gd