/* HLk"a-+'
**SiteFileFetch.java ""+*Gn7^8
*/ pd1m/:
package NetFox; Psa8OJan
import java.io.*; kziBHis!
import java.net.*; a(~YrA%~
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public class SiteFileFetch extends Thread { L8zqLDi&
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SiteInfoBean siteInfoBean = null; //文件信息Bean J){\h-4
long[] nStartPos; //开始位置 ZX;k*OrW
long[] nEndPos; //结束位置 }^ <zVdwp
FileSplitterFetch[] fileSplitterFetch; //子线程对象 FNM"!z
long nFileLength; //文件长度 _PbfFY #
boolean bFirst = true; //是否第一次取文件 Mh|`XO.5I
boolean bStop = false; //停止标志 w3N%J>4_E
File tmpFile; //文件下载的临时信息 DRoxw24
DataOutputStream output; //输出到文件的输出流 iq:[+
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) (3h*sd5ly
public SiteFileFetch(SiteInfoBean bean) throws IOException }Yl=lcvw
{ E?mp6R]}%
siteInfoBean = bean; Q75^7Ga_
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ?<?C*W_
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); KUut C
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if(tmpFile.exists ()) +I n"OR%
{ W~F/ZrT3A
bFirst = false; a~7osRmp0
read_nPos(); 1.H!A@
} RG3G},Q
else Q$0%~`t
{ bW^QH-t
nStartPos = new long[bean.getNSplitter()]; 3x0wk9lND
nEndPos = new long[bean.getNSplitter()]; yTt (fn:;
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} E`n`#=xKR
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public void run() ^6oqq[$
{ s~ZFVi-i
//获得文件长度 .b`P!
//分割文件 &n.uNe
//实例FileSplitterFetch 5{0>7c|.
//启动FileSplitterFetch线程 eKz~viM'
//等待子线程返回 n E0~Y2
try{ /7@2Qc2
if(bFirst) 0r ;
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{ Ww&- `.
nFileLength = getFileSize(); VQ<i$ I
if(nFileLength == -1) TDE1z>h+"
{ X&?lDL7?
System.err.println("File Length is not known!"); T\!SA
} T;r];Y(b*
else if(nFileLength == -2) (OcNC/9
{ )v{41sM+
System.err.println("File is not access!"); -xu.=n@,
} R(83E
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else nvK7*-
{ ~:<@ `
for(int i=0;i<nStartPos.length;i++) !b->u_
{ 7 eQoc2X2
nStartPos = (long)(i*(nFileLength/nStartPos.length)); j4xr1y3^
} ^s~n[
for(int i=0;i<nEndPos.length-1;i++) 6q[!X0u
{ ,."(Gp
nEndPos = nStartPos[i+1]; nl9Cdi]o
} :KP'xf.
nEndPos[nEndPos.length-1] = nFileLength; B=bI'S8\
} 0#fG4D_
} UX'NJ1f
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//启动子线程 {dA
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; B H0#Q5
for(int i=0;i<nStartPos.length;i++) LL[#b2CKa
{ EY&C[=
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), tP
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), hJo^Wo
nStartPos,nEndPos,i); VUC <0WV
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ^GrkIh0nL
fileSplitterFetch.start(); E'^]zW=9
} #O9*$eMw
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), k\c &2T]W
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); EcU'*
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", -iDEh_pts
nEndPos = " + nFileLength); *Iwk47J ;a
// fileSplitterFetch[nPos.length-1].start(); |] !o*7"4
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//等待子线程结束 uz#PBV8Q
//int count = 0; q _]
//是否结束while循环 )ehB)X
boolean breakWhile = false; y+";
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while(!bStop) [Ql?Y$QB`4
{ B3>Uba*-)}
write_nPos(); \l]pe|0EW
Utility.sleep(500); %g0z)J
breakWhile = true; #x5 N{8
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for(int i=0;i<nStartPos.length;i++) _(6B.
{ [+'BQ
if(!fileSplitterFetch.bDownOver) wyrI8UY
{ -Y8ks7
breakWhile = false; rO(TG
break; H ZDaV&)@
} YQ@dl
} 0^&(u:~
if(breakWhile) RO%tuU,-
break; ;c X^8;F0
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//count++; ^%5~;
//if(count>4) J+@MzkpK
// siteStop(); i.&Kpw9;m
} XSp x''l
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System.err.println("文件下载结束!"); hC|5e|S
} @L[PW@:SZ
catch(Exception e){e.printStackTrace ();} /lr1hW~Dbk
} :kb1}Wu
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//获得文件长度 KUp
public long getFileSize() T/GgF&i3
{ U0h)pdo
int nFileLength = -1; T2:oWjC3$
try{ :dY.D|j*
URL url = new URL(siteInfoBean.getSSiteURL()); f@!
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); "%oH@
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httpConnection.setRequestProperty("User-Agent","NetFox"); _K0izKTA.
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int responseCode=httpConnection.getResponseCode(); abROFI5.L
if(responseCode>=400) $u; >hk
{ @V* ju
processErrorCode(responseCode); ~aJW"\{
return -2; //-2 represent access is error YY#s=
} 5u;Rr 1D
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String sHeader; }uF[Ra
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for(int i=1;;i++) &'5@azU
{ I&TTr7
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); JrCf,?L^
//Utility.log(in.readLine()); L_THU4^j
sHeader=httpConnection.getHeaderFieldKey(i); mL:m;>JJ n
if(sHeader!=null) 2^)D
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{ c*x J=Gz6d
if(sHeader.equals("Content-Length")) KInUe(g<9M
{ ^&+zA,aL,A
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 7tpAZ<{
break; qri}=du&F
}
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} .'t (-eT,
else 2BoFyL*
break; gYTyH.
} ^M`>YOU2+
} jo9J%vo
catch(IOException e){e.printStackTrace ();} `z9)YH
catch(Exception e){e.printStackTrace ();} VHXI@UT*
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Utility.log(nFileLength); V";mWws+?#
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return nFileLength; { 1+Cw?1d
} A",eS6
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//保存下载信息(文件指针位置) 8weSrm
private void write_nPos() 0JmFQ^g(
{ c3=-Mq9Q
try{ ,>D ja59
output = new DataOutputStream(new FileOutputStream(tmpFile)); _1I K$gb[
output.writeInt(nStartPos.length); @%6)^]m}r
for(int i=0;i<nStartPos.length;i++) cC^W2\
{ r5t;'eCea
// output.writeLong(nPos); _*O7l
output.writeLong(fileSplitterFetch.nStartPos); 3p:=xL
output.writeLong(fileSplitterFetch.nEndPos); X AQGG>
} PT3>E5`N u
output.close(); =WIE>*3[
} WMW1B}Z3
catch(IOException e){e.printStackTrace ();} J'oDOn.M
catch(Exception e){e.printStackTrace ();} 8';m)Jc
} fv|]= e
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//读取保存的下载信息(文件指针位置) 'S =sj}X
private void read_nPos() 1TKEm9j]u
{ hHcJN
try{ P+[QI
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); TqIAWbb&
int nCount = input.readInt(); "gFxfWIA
nStartPos = new long[nCount]; s(Z(e %
nEndPos = new long[nCount]; YTQ5sFuGM
for(int i=0;i<nStartPos.length;i++) j]rXoV>
{ %1Yz'AiW[
nStartPos = input.readLong(); oFWt(r
nEndPos = input.readLong(); +`ai1-vw
} ZAMeqPt
input.close(); DW#Bfo
} }K2
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catch(IOException e){e.printStackTrace ();} !_qskDc-
catch(Exception e){e.printStackTrace ();} b)N[[sOt
} xpF](>LC(
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private void processErrorCode(int nErrorCode) NwguP
{ UcgG
System.err.println("Error Code : " + nErrorCode); rVY?6OMkd
} IE2CRBfs
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//停止文件下载 f0vJm
public void siteStop() WP}ixcq#
{ 1@xP(XS
bStop = true; Q8p=!K
for(int i=0;i<nStartPos.length;i++) UEzsDJu
fileSplitterFetch.splitterStop(); C;9t">prk
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} 7AFE-'S
} hi!`9k
//负责部分文件的抓取 %dc3z"u
**FileSplitterFetch.java WJfES2N
*/ 2UiR~P]%
package NetFox; GD!-
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import java.io.*; '_V
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import java.net.*; t-WjL@$F/
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public class FileSplitterFetch extends Thread { vYdR ht\(
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String sURL; //File URL ygN>"eP
long nStartPos; //File Snippet Start Position um7o !yg,
long nEndPos; //File Snippet End Position /be=u@KV
int nThreadID; //Thread's ID n#4Gv|{XMD
boolean bDownOver = false; //Downing is over I.1D*!tz
boolean bStop = false; //Stop identical w]nX?S8
FileAccessI fileAccessI = null; //File Access interface Z&Ue|Z4Qt
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException obO}NF*g^
{ yYY Nu`
this.sURL = sURL; L;S}s, 2x
this.nStartPos = nStart; WWNu:,
this.nEndPos = nEnd; kx:jI^
nThreadID = id; GX
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 /4*W DiH
} >^=gDJ\a
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public void run() X P;Bhz3j
{ Z.'syGuV
while(nStartPos < nEndPos && !bStop) w~|1Wd<v
{ u`_*g^5q"
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try{ L2fZ{bgy
URL url = new URL(sURL); ,(N[*)G
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); yS!(Ap
httpConnection.setRequestProperty("User-Agent","NetFox"); 8O7Yv<
String sProperty = "bytes="+nStartPos+"-"; =xL )$DTg)
httpConnection.setRequestProperty("RANGE",sProperty); L[y Pjw:0
Utility.log(sProperty); n*<v]1
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InputStream input = httpConnection.getInputStream(); e\F}q)_
//logResponseHead(httpConnection); F}36IM9/:
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byte[] b = new byte[1024]; m|O1QM;T
int nRead; $i#?v
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) D//=m=
{ !:3.D,
nStartPos += fileAccessI.write(b,0,nRead); &eQJfc\a
//if(nThreadID == 1) O("Uq../3
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); aC!EWgwW[
} .WX,Nd3@
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Utility.log("Thread " + nThreadID + " is over!"); |quij0_'e
bDownOver = true; F}Srn;V
//nPos = fileAccessI.write (b,0,nRead); X(Qu{HhI
} $4m*kQ
catch(Exception e){e.printStackTrace ();} $SY]fNJQ
} I4t*?
} TTZe$>f
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//打印回应的头信息 p?# pT}1
public void logResponseHead(HttpURLConnection con) nlc.u}#
{ },@``&e
for(int i=1;;i++) 5M F#&v
{ C&<~f#lB
String header=con.getHeaderFieldKey(i); pHC/(6?
if(header!=null) 7K;!iX<d
//responseHeaders.put(header,httpConnection.getHeaderField(header)); @?kJ).
Utility.log(header+" : "+con.getHeaderField(header)); #_JYh?
else Q@S-f:!
break; 3n]79+w@z
} *
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} nP3 E
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public void splitterStop() [f/I2
{ -c*\o3)
bStop = true; =&nW~<- v
} ,Nm$i"Lg
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} ztll}
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/* *ZrSiIPP
**FileAccess.java !t#F/C
*//文件访问(定位,写) WFTvOFj
package NetFox; eiVC"0-c}
import java.io.*; L|j%S
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public class FileAccessI implements Serializable{ 3Q^fVn$tk
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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 L2UsqVU
RandomAccessFile oSavedFile; 1q7tiMvV-
long nPos; ino:N5&;;
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public FileAccessI() throws IOException O`[aU%4b
{ 5GzFoy)j>
this("",0); 3FE( }G
} soRv1) el
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public FileAccessI(String sName,long nPos) throws IOException
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{ 4T6 {Y
oSavedFile = new RandomAccessFile(sName,"rw"); IxZb$h[
this.nPos = nPos; 64>krmVIe
oSavedFile.seek(nPos); Z<?OwAWz
} @(g_<@Jz
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public synchronized int write(byte[] b,int nStart,int nLen) QS[L~97m2M
{ PNs~[
int n = -1; =FP0\cQ.
try{ 4GdX/6C.
oSavedFile.write(b,nStart,nLen); 58Xzup_"
n = nLen; NoE*/!Sr
} ia @'%8
catch(IOException e) v=@TWEE
{ FzQTDu9
e.printStackTrace (); Mj#-j/{x{5
} Q4*?1`IsR
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return n; -VKS~{
} +ZMls
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} )SF}2?7e
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/* U1_@F$mq<
**SiteInfoBean.java >{gPN"S"a
*/
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package NetFox; Dl(3wgA
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public class SiteInfoBean { fWfk[(M'9
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private String sSiteURL; //Site's URL (.wIe/
private String sFilePath; //Saved File's Path wI]"U2L5
private String sFileName; //Saved File's Name tz4
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private int nSplitter; //Count of Splited Downloading File ^z1&8k"[^
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public SiteInfoBean() 9EDfd NN
{//nSplitter的缺省值为5 L37 Y+C//
//default value of nSplitter is 5
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this("","","",5); &,A64y
} ?Nf>]|K:Q
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 5pr"d@.
{ +/,icA}PI
sSiteURL= sURL; @SZM82qU2z
sFilePath = sPath; UcBe'r}G
sFileName = sName; \PDd$syDA
this.nSplitter = nSpiltter; NI#X@
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} ]8q3>
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public String getSSiteURL() ]f+ csB
{ p' M%XBu
return sSiteURL; Ox#\M0Wn$3
} 3_~cMlr3T.
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public void setSSiteURL(String value) *Qugv^-
{ ~U;rw&'H
sSiteURL = value; 5N%93{L
} hxCvk/7sT
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public String getSFilePath() >e\9Bf_
{ 3a.kBzus
return sFilePath; :Y9NLbv
} f$NM M
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public void setSFilePath(String value) G}&Sle]
{ X[f=h=|
sFilePath = value; \j&^aAp r
} UnI48Y
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public String getSFileName() Fx-8M!
{ 9U$EJN_G
return sFileName; T&Lb<'f
} ^i:`ZfA#
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