/* rc9Y:(S1l
**SiteFileFetch.java C^ hCT
*/ O FCA~sR
package NetFox; ~ GW8|tw
import java.io.*; /)E'%/"A
import java.net.*; O9tgS@*Tv
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public class SiteFileFetch extends Thread { X ?l F,p
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SiteInfoBean siteInfoBean = null; //文件信息Bean ';0NWFP
long[] nStartPos; //开始位置 3 @7<e~f
long[] nEndPos; //结束位置 ko%B`
FileSplitterFetch[] fileSplitterFetch; //子线程对象 0{
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long nFileLength; //文件长度 p/f!\
boolean bFirst = true; //是否第一次取文件 OnKPD=<
boolean bStop = false; //停止标志 w(xRL#%
File tmpFile; //文件下载的临时信息 "Nn+Zw43
DataOutputStream output; //输出到文件的输出流 @\UoZv(
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 5h4E>LB.B
public SiteFileFetch(SiteInfoBean bean) throws IOException +e6c4Tw/
{ 6(X5n5C
siteInfoBean = bean; KZxA\,Y'5
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); S=wJ{?gzAK
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); K{s%h0
if(tmpFile.exists ()) yU@~UCmja
{ _\tGmME37
bFirst = false; <?I s ~[2
read_nPos(); Fc"&lk4e
} Kx;DmwX-
else X}5aE4K/
{ k<M~co;L
nStartPos = new long[bean.getNSplitter()]; P;dp>jL
nEndPos = new long[bean.getNSplitter()]; 426)H_wx
} 0kD8w j%
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} cc%O35o
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public void run() Z-{!Z;T)z
{ #NVqS5
//获得文件长度 ; YaR|)B
//分割文件 W].P(A>m
//实例FileSplitterFetch &E{5k{Y
//启动FileSplitterFetch线程 xmDX1sL**
//等待子线程返回 x Qh?
try{ jj)9jUz
if(bFirst) LaE;{ jY
{ TgaDzF,j{A
nFileLength = getFileSize(); 9@yP;{Q
if(nFileLength == -1) Or9@ X=C
{ sK:,c5^
System.err.println("File Length is not known!"); 4Pljyq:
} f/b }X3K
else if(nFileLength == -2) 16\U'<
{ k"SmbFn%N0
System.err.println("File is not access!"); n;"4`6L~
} H&L=WF+x
else sQ^>.yG
{ `~(C\+gUp
for(int i=0;i<nStartPos.length;i++) ~zz |U!TG
{ %uGA+ \b
nStartPos = (long)(i*(nFileLength/nStartPos.length)); B-[SUmHr
} Xl6)&
for(int i=0;i<nEndPos.length-1;i++) 1V`]sfRK
{ AEwb'
nEndPos = nStartPos[i+1]; R7KQ-+Zb
} Vk_*]wU
nEndPos[nEndPos.length-1] = nFileLength; b,a\`%m}
} uz4mHyS6
} FGx_qBG4|
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//启动子线程 J'O`3!Oy/
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; V8&/O)} o
for(int i=0;i<nStartPos.length;i++) GxZQ{
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{ (?\ZN+V)
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), eq/5$b(
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 8"LaP3U
nStartPos,nEndPos,i); =zA=D.D2
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); FA^x|C =$
fileSplitterFetch.start(); YLd
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} |/fbU_d
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,:\2Lf
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); %Y Rg1UKY
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", CES FkAj~
nEndPos = " + nFileLength); M]` Q4\
// fileSplitterFetch[nPos.length-1].start(); e+R.0E
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//等待子线程结束 ($(1KE
//int count = 0; \S7OC
//是否结束while循环 h.=B!wKK
boolean breakWhile = false; paBGJ~{=
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while(!bStop) JNp`@`0V
{ g[M@
write_nPos(); u}%&LI`.
Utility.sleep(500); <uTsXv
breakWhile = true; ,IJ Nuu\
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for(int i=0;i<nStartPos.length;i++) +~fu-%,k
{ 6$6NVq
if(!fileSplitterFetch.bDownOver) ,;d9uG2
{ *Ra")(RnDK
breakWhile = false; Fcr@Un'
break; j=AJs<
} 2mlE;.}8
} mW-@-5Wda
if(breakWhile) =hs@W)-O
break; >rFvT>@NU
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//count++; ;ZqFrHI M`
//if(count>4) '9/kDkt!
// siteStop(); :9h8q"T
} |Gf{ }
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System.err.println("文件下载结束!"); ibuI/VDF
} .-|O "H$
catch(Exception e){e.printStackTrace ();} rka:.#!
} a2rv4d=
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//获得文件长度 QLUe{@ivc
public long getFileSize() OWjZ)f/
{ e"CLhaT
int nFileLength = -1; h^0mjdSp,
try{ piG1&*
URL url = new URL(siteInfoBean.getSSiteURL()); P8VU&b\
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); lX4p'R-h
httpConnection.setRequestProperty("User-Agent","NetFox"); Ww(_EW
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int responseCode=httpConnection.getResponseCode(); /)I9+s#q9o
if(responseCode>=400) biG9?
{ ,![=_ d
processErrorCode(responseCode); l17ZNDzLU
return -2; //-2 represent access is error 0|ps),
} }m H>lN
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String sHeader; /(V=Um^0
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for(int i=1;;i++) C P#79=1
{ 4cQ5E9
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); `+.I
//Utility.log(in.readLine()); `0^i
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sHeader=httpConnection.getHeaderFieldKey(i); 2f!oA~|2
if(sHeader!=null) HUC2RM?FN
{ jEsTw_
if(sHeader.equals("Content-Length")) ]CZLaID~
{ =b7&(x
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); "AouiZkh
break; T]|O/
} WO-WoPO
} AuTplO0_rE
else 5gD)2Q6
break; hzLGmWN2j8
} uC(S`Q[Bg
} RC(D=6+[C
catch(IOException e){e.printStackTrace ();} 9@Sb! 9h
catch(Exception e){e.printStackTrace ();} l,u{:JC
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Utility.log(nFileLength); ~It+|X=Kx
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return nFileLength; r$FM8$cJ
} %-/:ps
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//保存下载信息(文件指针位置) LDEt.,6i
private void write_nPos() %`QsX {?,
{ :EwA$`/
try{ "IG$VjgcB
output = new DataOutputStream(new FileOutputStream(tmpFile)); [7 `Dgnmq
output.writeInt(nStartPos.length); (eG]Cp@
for(int i=0;i<nStartPos.length;i++) THgzT\_zq
{ $D s]\j*
// output.writeLong(nPos); KOEi_9i}
output.writeLong(fileSplitterFetch.nStartPos); m=\eL~h
output.writeLong(fileSplitterFetch.nEndPos); S1juAV=
} 1IQOl
output.close(); +N$7=oGC
} J+ZdZa}Ob
catch(IOException e){e.printStackTrace ();} 'Y{ux>
catch(Exception e){e.printStackTrace ();} 'eDgeWt/CQ
} D2:a
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//读取保存的下载信息(文件指针位置) jjwMvf.R
private void read_nPos() Bb[e[,ah
{ PnIvk]"Ab
try{ 5m USh3
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); gVA}?t;
int nCount = input.readInt(); hf^`at
nStartPos = new long[nCount]; 3b)T}g
nEndPos = new long[nCount]; s.`%ZDl@Y
for(int i=0;i<nStartPos.length;i++) ;=VK_3"
{ =R;1vUio
nStartPos = input.readLong(); *_/eAi/WG
nEndPos = input.readLong(); 8pL>wL
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} *CY6
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input.close(); k3/JQ]'D
} PP[)h,ZL*
catch(IOException e){e.printStackTrace ();} Q`p}X&^a
catch(Exception e){e.printStackTrace ();} v8[ek@
} J%f=A1Q
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private void processErrorCode(int nErrorCode) -=Eq/su%
{ b8{h[YJL2
System.err.println("Error Code : " + nErrorCode); TaQ "G
} ),p]n
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//停止文件下载 G9'YgW+$7
public void siteStop() 5lHN8k=mm2
{ "l[V%f E
bStop = true; =Mu'+,dT
for(int i=0;i<nStartPos.length;i++) W:{PBb"x8
fileSplitterFetch.splitterStop(); }Cmj (k`~
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} kJ#[UCqzM
} }lC64;yo
//负责部分文件的抓取 ;!0.Kk
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**FileSplitterFetch.java jWv3O&+?X
*/ {b-0_
package NetFox; @u"kX2>Eq
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import java.io.*; .sJys SA\
import java.net.*; lNA'M&
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public class FileSplitterFetch extends Thread { Ft"&NtXeZZ
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String sURL; //File URL *fQ?A|l!x
long nStartPos; //File Snippet Start Position a_ 9 |xI
long nEndPos; //File Snippet End Position +9 16ZPk
int nThreadID; //Thread's ID
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boolean bDownOver = false; //Downing is over EG(`E9DZ
boolean bStop = false; //Stop identical \'It,PN
FileAccessI fileAccessI = null; //File Access interface KB%j! ?
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException tyn?o
{
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this.sURL = sURL; oRT
this.nStartPos = nStart; =qV4Sje|q
this.nEndPos = nEnd; .y %pGi
nThreadID = id; J+3\2D?
fileAccessI = new FileAccessI(sName,nStartPos);//定位 To# E@Nw
} fW5"4,
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public void run() u|m[(-`
{ <K DH
while(nStartPos < nEndPos && !bStop) e?^\r)1
{ PS_3Oq)
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try{ JAGi""3HG
URL url = new URL(sURL); ;xW8Z<\-
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3:]{(@J
httpConnection.setRequestProperty("User-Agent","NetFox"); _XH4;uGg
String sProperty = "bytes="+nStartPos+"-"; J^ +_8
httpConnection.setRequestProperty("RANGE",sProperty); g:3d<CS
Utility.log(sProperty); Lf,CxZL5
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InputStream input = httpConnection.getInputStream();
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//logResponseHead(httpConnection); !p]T6_t]Q
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byte[] b = new byte[1024]; Wphe%Of
int nRead; S+.21,
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 8Zcol$XS'
{ wb(*7 &eP:
nStartPos += fileAccessI.write(b,0,nRead); }G>v]bV0V
//if(nThreadID == 1) >:w?qEaE
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); azao`z
} ;jRL3gAe)
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Utility.log("Thread " + nThreadID + " is over!"); fkdf~Vb
bDownOver = true; Y5nz?a
//nPos = fileAccessI.write (b,0,nRead); #5'c\\?Q
} 8q_1(& O
catch(Exception e){e.printStackTrace ();} -rEeKt
} Xtuhc dzu[
} Nc
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//打印回应的头信息 sx-EA&5-9k
public void logResponseHead(HttpURLConnection con) [:AB$l*
{ =jJ H^Y2
for(int i=1;;i++) BhqhyX\D&y
{ L_tjcfVo
String header=con.getHeaderFieldKey(i); Wr]O
if(header!=null) 5."5IjZu
//responseHeaders.put(header,httpConnection.getHeaderField(header)); \\Y,?x_0T
Utility.log(header+" : "+con.getHeaderField(header)); 5,F;j<F
else x7vq?fP0n
break; k%{ l4
} K5P Gi#
} 6{5q@9F
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public void splitterStop() BmJkt3j."
{ q!ee g
bStop = true; 5iP8D<;o5
} WLE%d]'%M
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} $kD7y5
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/* qpoquWZ
**FileAccess.java E^7C
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*//文件访问(定位,写) D0f*eSXE{
package NetFox; 'P+f|d[
import java.io.*; E3y6c)<
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public class FileAccessI implements Serializable{ cvhlRI%6
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 I=U+GY:
RandomAccessFile oSavedFile; :=y0'f
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long nPos; xsYE=^uv
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public FileAccessI() throws IOException 5bXHz5i
{ i^R{Ul[
this("",0); Bw6 L;Vu
} Hc M~
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public FileAccessI(String sName,long nPos) throws IOException sA3UeTf
{ .xEJaID\N
oSavedFile = new RandomAccessFile(sName,"rw"); Vz'HM$
this.nPos = nPos;
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oSavedFile.seek(nPos); 8[oYZrg
} `v~!H\q
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public synchronized int write(byte[] b,int nStart,int nLen) -]/7hN*v
{ te)n{K",
int n = -1; '[Xl>Z[
try{ A?DB#-z.r
oSavedFile.write(b,nStart,nLen); "NKf0F
n = nLen; nx B32
} p!}ZdX[u
catch(IOException e) b_|u<
{ BMpF02Y|4
e.printStackTrace (); :&9TW]*g
} IfMpY;ow=
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return n; yc[(lq.^n
} 0aogBg_@K
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} R]Ek}1~?
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/* +;dXDZ2
**SiteInfoBean.java ETO$9}x[
*/ 3{e'YD~hP
package NetFox; Tm_8<$ 7
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public class SiteInfoBean { _f|/*.
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private String sSiteURL; //Site's URL 8+>\3j
private String sFilePath; //Saved File's Path ~RInN+N#
private String sFileName; //Saved File's Name Xpl?g=B&u
private int nSplitter; //Count of Splited Downloading File "r. .
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public SiteInfoBean() ezn`
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{//nSplitter的缺省值为5 9B=1Yr[
//default value of nSplitter is 5 Kt6>L5:94
this("","","",5); Ly>OLI0x_
} `Mk4sKU\a
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) k. GA8=]>
{ iSiDSeW8
sSiteURL= sURL; 0
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sFilePath = sPath; "!KpXBc,>
sFileName = sName; si(cOCj/
this.nSplitter = nSpiltter; *
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} #epy%>
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public String getSSiteURL() IzUo0D*@
{ g_q<ze
return sSiteURL; re`t ]gzb
} Cj^{9'0
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public void setSSiteURL(String value) ;`UecLb#
{ jO8k6<l
sSiteURL = value; c-8!#~M(
} 5<+KR.W
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public String getSFilePath() dR+1aY;
{ &tE.6^F
return sFilePath; LM"y\q ]
} DWm SC}{.
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public void setSFilePath(String value) b$-e\XB!
{ xs!p|
sFilePath = value; HOZRYIQB
} fn}UBzED\
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public String getSFileName() k;Fh4Hv
{ qf8[!5GM
return sFileName; YZE.@Rz
} L?RF;jf
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public void setSFileName(String value) I%lE;'x
{ g/Wh,f3
sFileName = value; (^n*Am;zlH
} Q8qz*v]{
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public int getNSplitter() lE5v-z? &|
{ $_X|,v9
return nSplitter; n(vDytrj;
} ~<9{#uM
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public void setNSplitter(int nCount) >e&