/* ~| 6[j<ziL
**SiteFileFetch.java 2,P^n4~A?w
*/ L z1ME(
package NetFox; UOmY-\ &c
import java.io.*; @oad,=R&
import java.net.*; UEVG0qF
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public class SiteFileFetch extends Thread { {$Gd2gO
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SiteInfoBean siteInfoBean = null; //文件信息Bean )@'}\_a3[]
long[] nStartPos; //开始位置 C=4Qlt[`
long[] nEndPos; //结束位置 qWKAM@
FileSplitterFetch[] fileSplitterFetch; //子线程对象 8Dm%@*B^b
long nFileLength; //文件长度 K:Q<CQ2
boolean bFirst = true; //是否第一次取文件 iRi-cQVy
boolean bStop = false; //停止标志 % -e 82J1
File tmpFile; //文件下载的临时信息 ~**.|%Kc
DataOutputStream output; //输出到文件的输出流 9pxc~=
x~j`@k,;
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) }I6vqG
public SiteFileFetch(SiteInfoBean bean) throws IOException R n*L
{ f:.I0 ST
siteInfoBean = bean; X/M4!L}\
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); QS]1daMIK<
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); }<y7bqA
if(tmpFile.exists ()) @[i4^
{ *``JamnSO
bFirst = false; Q( {
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read_nPos(); Km6YP!i
} .Twk {p
else +V^;.P</
{ oD1/{dRzj
nStartPos = new long[bean.getNSplitter()]; 1\rz%E
nEndPos = new long[bean.getNSplitter()]; VEw"
} VD]zz
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} Ktm4 A O
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public void run() Y0K[Sm>
{ ?vHU#
//获得文件长度 :+|Z@KB
//分割文件 X<; f
//实例FileSplitterFetch Jl9k``r*
//启动FileSplitterFetch线程 yU}qOgXx
//等待子线程返回 8d-t|HkN
try{ 1"M]3Kl
if(bFirst) :e%Pvk
{ v(D;PS3r
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nFileLength = getFileSize(); YNj`W1
if(nFileLength == -1) /mu*-,aeX
{ =;&yd';k
System.err.println("File Length is not known!"); c+nq] xOs'
} 0aa&m[Mk
else if(nFileLength == -2) (%W&4a1di
{ T+k{W6
System.err.println("File is not access!"); M8b;d}XL
} (<oyN7NT
else cFnDmtI:
{ l.bYE/F0&
for(int i=0;i<nStartPos.length;i++) 'B0{_RaTb
{ Gvqxi|
nStartPos = (long)(i*(nFileLength/nStartPos.length)); #!KE\OI;@5
} YgV817OV
for(int i=0;i<nEndPos.length-1;i++) 1.9}_4!
{ 4l45N6"
nEndPos = nStartPos[i+1]; [ $n_6
} <r`2)[7N
nEndPos[nEndPos.length-1] = nFileLength; q Xe8Kto
} !pdb'*,n
} KOuCHqCfq
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//启动子线程 JU5C}%Q6
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; b4ONh%
for(int i=0;i<nStartPos.length;i++) hP)LY=-2
{ u'W8;G*~
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), iBgx
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), "z=SO1
nStartPos,nEndPos,i); [>%xd)8.c
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 1gy.8i
fileSplitterFetch.start(); &&:YVd
} !~D}/Q;#}\
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,+{LYF
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Pjjewy1}^
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", doy`C)xI
nEndPos = " + nFileLength); DOJ N2{IP
// fileSplitterFetch[nPos.length-1].start(); }$Tl ?BRpU
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B%76rEpvW;
//等待子线程结束 D(RTVef
//int count = 0; ^y1j.M@q
//是否结束while循环 (/j/>9iro
boolean breakWhile = false; T
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while(!bStop) !F1N~6f
{ UsQ+`\|
write_nPos(); ;J2z p*|
Utility.sleep(500); q$tUH)0
breakWhile = true; 9"A`sGZ
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for(int i=0;i<nStartPos.length;i++) ~W+kiTsD?
{ j=aI9p
if(!fileSplitterFetch.bDownOver) DLMM/WJg@
{ &*G#H~\
breakWhile = false; >kp?vK;'B
break; IrhA+)pdse
}
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} iQ
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if(breakWhile) C3],n
break; i/ )am9
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//count++; Sf7\;^
//if(count>4) *b/`Ya4
// siteStop(); E5xzy/ZQ
} ZR]25Yy
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System.err.println("文件下载结束!"); _5# y06Q
} k+C zj
catch(Exception e){e.printStackTrace ();} 8b-Q F
} 2Mmz %S'd
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//获得文件长度 orfO^;qTY
public long getFileSize()
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{ U4-g^S[
int nFileLength = -1; Z99>5\k
try{ D.Q=]jOs
URL url = new URL(siteInfoBean.getSSiteURL()); ()+<)hg}2
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ^,8)iV0j_
httpConnection.setRequestProperty("User-Agent","NetFox"); 3?7\T#=
L=8<B=QT$
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int responseCode=httpConnection.getResponseCode(); TDNQu_E
if(responseCode>=400) HO%wHiv1X
{ \cUNsB5
processErrorCode(responseCode); PCM-i{6/
return -2; //-2 represent access is error Ry K\uv
} R0vI bFwj
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ws|;`
String sHeader; .#Z%1U%P.
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for(int i=1;;i++) 7-T{a<g
{ Vle@4]M\
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); sq[iY
//Utility.log(in.readLine()); d%,eZXg'
sHeader=httpConnection.getHeaderFieldKey(i); WKIoS"?-F
if(sHeader!=null) 7cO n9fIE
{ U($dx.`v#
if(sHeader.equals("Content-Length")) H_ox_
u}
{ Nkl_Ho,
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); s,n0jix@
break; ^!z[t\$
} ez^@NK
} ;z:UN}
else ^8Q62
break; G *;a^]-
} SNE#0L'}
} V8-oYwOR
catch(IOException e){e.printStackTrace ();} q+]h=:5=I
catch(Exception e){e.printStackTrace ();} ^(h+URFpA
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Utility.log(nFileLength); *"n vX2iz
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return nFileLength; dJ""XaHqf
} [P7N{l=I
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//保存下载信息(文件指针位置) Qj6/[mUr~
private void write_nPos() p2udm! )J
{ y+6o{`0
try{ <5jzl
output = new DataOutputStream(new FileOutputStream(tmpFile)); y2vUthRwo
output.writeInt(nStartPos.length); dW~*e2nq
for(int i=0;i<nStartPos.length;i++) i35=Y~P-
{ o1Q7Th
// output.writeLong(nPos); fasgmi}
output.writeLong(fileSplitterFetch.nStartPos); FE!lok
output.writeLong(fileSplitterFetch.nEndPos); sHl>$Qevz
} `zXO_@C
output.close(); #ap9Yoyk\
} q]N:Tpm9
catch(IOException e){e.printStackTrace ();} D{4YxR
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catch(Exception e){e.printStackTrace ();} [$"n^5_~
} lBFMwJU)
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//读取保存的下载信息(文件指针位置) 16i"Yg!*
private void read_nPos() x61 U[/r
{ H;fxxu`cS
try{ hq/k*;
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); MxcFvo*LCp
int nCount = input.readInt(); 5N*Ux4M
nStartPos = new long[nCount]; 7=OQ8IM!
nEndPos = new long[nCount]; Nn"+w|v[ev
for(int i=0;i<nStartPos.length;i++) u(t#Ze~Y1
{ *b}lF4O?
nStartPos = input.readLong(); L^4-5`gj
nEndPos = input.readLong(); | j a-
} i?:_:"^x
input.close(); [[Y0
} z,bQQ;z9
catch(IOException e){e.printStackTrace ();} QtqfG{
catch(Exception e){e.printStackTrace ();} 0,rTdjH7
} 'X!?vK^]p
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private void processErrorCode(int nErrorCode) Ttc[Q]Ri
{ +_xOLiu
System.err.println("Error Code : " + nErrorCode); A7`1-#
} F]t(%{#W
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//停止文件下载 e$uiJNS2
public void siteStop() XNb ZNaAd
{ F.=Bnw/-
bStop = true; GSQ/NYK
for(int i=0;i<nStartPos.length;i++) u% n*gcY
fileSplitterFetch.splitterStop(); b-*3 2Y%
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} m7GR[MR
} u=/CRjot
//负责部分文件的抓取 U*P. :BvG
**FileSplitterFetch.java *(>}Y
*/ &gE 75B
package NetFox; mA@Me7m}
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import java.io.*; ~ Yngkt
import java.net.*; I1>N4R-j
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public class FileSplitterFetch extends Thread { dN}#2Bo=
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String sURL; //File URL |xvy')(b
long nStartPos; //File Snippet Start Position 0%
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long nEndPos; //File Snippet End Position V$rlA'+1v
int nThreadID; //Thread's ID JQ-gn^tsy
boolean bDownOver = false; //Downing is over 1G'`2ATF*
boolean bStop = false; //Stop identical d4 (/m_HMu
FileAccessI fileAccessI = null; //File Access interface ~E^,=4
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException O8W7<Wc|z
{ 7 +@qB]Bi<
this.sURL = sURL; = }:)y0L
this.nStartPos = nStart; K[7EOXLy
this.nEndPos = nEnd; e<#DdpX!H~
nThreadID = id; I;?X f
fileAccessI = new FileAccessI(sName,nStartPos);//定位 wB{;bB{
} /Y2/!mU</
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public void run() oejfU;+$
{ }O4se"xK
while(nStartPos < nEndPos && !bStop) Ep4Hqx $
{ FHPXu59u
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try{ [J0v&{)?
URL url = new URL(sURL); N8`4veVBx'
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); DF{Qw@P!
httpConnection.setRequestProperty("User-Agent","NetFox"); 6 Ik,zQL
String sProperty = "bytes="+nStartPos+"-"; leiW4Fj
httpConnection.setRequestProperty("RANGE",sProperty); N9rBW
Utility.log(sProperty); O!Z|r?
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InputStream input = httpConnection.getInputStream(); |uH%6&\
//logResponseHead(httpConnection); Px>va01n
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byte[] b = new byte[1024]; 5Y3i|cj
int nRead; LN_OD5gZ
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) tB'V
{ f0LP?]
nStartPos += fileAccessI.write(b,0,nRead); y9|K|xO[
//if(nThreadID == 1) <d7V<&@o=
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 7.+#zyF
} [;b=A
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Utility.log("Thread " + nThreadID + " is over!"); :b,^J&~/)1
bDownOver = true; N|2y"5
//nPos = fileAccessI.write (b,0,nRead); Y3ZK%OyPR
} J%]D%2vnk`
catch(Exception e){e.printStackTrace ();} ^5 t
} Ut)r&?
} 2_t=P|Uo
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//打印回应的头信息 O8N[Jl
public void logResponseHead(HttpURLConnection con) ~H}en6Rc
{ VZIR4J[\.
for(int i=1;;i++) www`=)A;
{ )OsLrq/
String header=con.getHeaderFieldKey(i); s/1 #DM"
if(header!=null) KIVH!2q;
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 8S;CFyT\n
Utility.log(header+" : "+con.getHeaderField(header)); ]^\8U2q}
else b r,+45:
break; xqHL+W
} ; W7Y2Md
} s-VSH
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public void splitterStop() Cv=GZGn-
{ b]]N{: I
bStop = true; ^Dx#7bsDZR
} ]wuy_+$
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} DjW$?>
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/* XvSIWs
**FileAccess.java }+Vv0jX|V
*//文件访问(定位,写) IdM*5Y>f
package NetFox; YJ2ro-X
import java.io.*; []&(D_e"
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public class FileAccessI implements Serializable{ 1ZKzumF
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 R.1Xst &i
RandomAccessFile oSavedFile; M}.b"
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long nPos; =J|sbY"]
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public FileAccessI() throws IOException ;~sr$6
{ 04y!\
this("",0); CM~MoV[k7e
} =V^@%YIn
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public FileAccessI(String sName,long nPos) throws IOException $<ddy/4
{ GF--riyfB
oSavedFile = new RandomAccessFile(sName,"rw"); iY.eJlfH
this.nPos = nPos; \}inT_{g
oSavedFile.seek(nPos); Y~"9L|`f/
} wTpD1"_R
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public synchronized int write(byte[] b,int nStart,int nLen) FUaNiAr[
{ _JOP[KHb
int n = -1; )45_]tk>
try{ 4-:7.I(hq
oSavedFile.write(b,nStart,nLen); =p\Xy*
n = nLen; ,sb1"^Wc
} ~|)
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catch(IOException e) 4S *,\ q]q
{ T#iU+)-\%
e.printStackTrace (); GFR!n1Hv
} u;n(+8sz
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return n; ~5t?C<wo
} xtJAMo>g
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} u3wL<$2[8
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/* -fux2?8M
**SiteInfoBean.java Z! YpklZ?~
*/ dp^N_9$cdO
package NetFox; v"k4ATWP
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public class SiteInfoBean { I>((o`
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private String sSiteURL; //Site's URL <PD|_nZT
private String sFilePath; //Saved File's Path [~?M/QI9
private String sFileName; //Saved File's Name 0QR.
private int nSplitter; //Count of Splited Downloading File ,35Ag#va
zPQ$\$7xB
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]
public SiteInfoBean() 4!2SS
{//nSplitter的缺省值为5 d8.ajeN]o
//default value of nSplitter is 5 +{xG<Wkltz
this("","","",5); FT_k^CC
} b]dxlj}
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) )_O.{$
to
{ Y\u_+CG*
sSiteURL= sURL; ' PL_~
sFilePath = sPath; s?<!&Y
sFileName = sName; +UaO<L
this.nSplitter = nSpiltter; dP3VJ3+
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} o*)@oU
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public String getSSiteURL() r!M#7FDs(
{ vz,LF=s2
return sSiteURL; P6E1^$e
} /'NUZ9
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public void setSSiteURL(String value) h*waRD
{ a^*B5G1(&
sSiteURL = value; `7>K1slQ}S
} ws().IZ
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public String getSFilePath() eu=|t&FKk
{ q"p#H 8
return sFilePath; !pV<n
} 1G_xP^H!
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public void setSFilePath(String value) _"v~"k 90^
{ :28@J?jjO
sFilePath = value; T/5nu?v
} *<CxFy;|
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public String getSFileName() Z
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{ z}mvX.j7
return sFileName; ?PYNE
} Cd9t{pQD4
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public void setSFileName(String value) >T(M0Tkt
{ 5GUH;o1m
sFileName = value; wz)m{:b<
} =yo=q)W
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public int getNSplitter() 0vcET(
{ #VQ36pCd
return nSplitter; taBO4LV
} 3lyQn"
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public void setNSplitter(int nCount) ,$o-C&nC
{ _4~k3%w\`l
nSplitter = nCount; gnYnL8l`J
} NywB3
} j5'. P~
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/* Bac?'ypm
**Utility.java _RgxKp/d
*/ my=*zziN
package NetFox; ?!_u,sT
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public class Utility { -uO%[/h;N
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public Utility() _J+]SNk
{ EmYO5Whi
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} T27:"LVw
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//线程睡眠 a\.//?
public static void sleep(int nSecond) @ 8A{ 9i
{ Hu[8HzJo
try{ WvIK=fdZ$
Thread.sleep(nSecond); x0y%\
} cvn-*Sj
catch(Exception e) (}VuiNY<