/* {0\9HI@
**SiteFileFetch.java KH9D},
*/ 2E@y0[C?
package NetFox; 'A'[N :i
import java.io.*; Jmun^Q/h
import java.net.*; J|DY
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public class SiteFileFetch extends Thread { "?s
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SiteInfoBean siteInfoBean = null; //文件信息Bean &LHS<Nv^:
long[] nStartPos; //开始位置 ed$w5dv
long[] nEndPos; //结束位置 6rN.)dL.#N
FileSplitterFetch[] fileSplitterFetch; //子线程对象 \y+@mJWa
long nFileLength; //文件长度 ZO]P9b
boolean bFirst = true; //是否第一次取文件 \W"p<oo|H
boolean bStop = false; //停止标志 _''9-t;n,
File tmpFile; //文件下载的临时信息 >ui;B$=
DataOutputStream output; //输出到文件的输出流 v`r*Yok;`
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) *JiI>[
public SiteFileFetch(SiteInfoBean bean) throws IOException ,(z"s8N
{ Xt$Y&Ho
siteInfoBean = bean; 6-f-/$B
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); y`J8hawp
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); #E4|@}30`
if(tmpFile.exists ()) 8T3Nz8Q7
{ c2fw;)j&X
bFirst = false; 3%
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read_nPos(); =!DpW VsQ
} ? w@)3Z=u
else P5&8^YV`N
{ kp^q}iS
nStartPos = new long[bean.getNSplitter()]; il$eO 7
nEndPos = new long[bean.getNSplitter()]; u4DrZ-v
} UZJ#/x5F
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} #E#Fk3-ljQ
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public void run() Oe lf^&m
{ +nL#c{
//获得文件长度 M[ ON2P;
//分割文件 06[HE7
//实例FileSplitterFetch ;3+_aoY
//启动FileSplitterFetch线程 Hd_,`W@
//等待子线程返回 Dw<bLSaW&
try{ 3e)$ <e
if(bFirst) {TaYkuWS
{ #?'@?0<6
nFileLength = getFileSize(); D+{&zo
if(nFileLength == -1) +-qa7
{ |mT1\O2a
System.err.println("File Length is not known!"); Op:$7hv
} D7g
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else if(nFileLength == -2) rTim1<IXR
{ 0U?(EJ
System.err.println("File is not access!"); B(Er/\-@U
} >.-4CJ])d
else Wu'9ouw!
{ YmLpGqNv
for(int i=0;i<nStartPos.length;i++) .TNGiUzG
{ f(
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); gi$ 'x^]#
} s01=C3
for(int i=0;i<nEndPos.length-1;i++) vb3hDy
{ |\W~+}'g~
nEndPos = nStartPos[i+1]; ZtY?X- 4_
} -FW^fGS+
nEndPos[nEndPos.length-1] = nFileLength; 0 gR_1~3
} c[Z#q*Q
} _%(.OR
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//启动子线程 I8k+Rk*
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; p$cb&NNh*H
for(int i=0;i<nStartPos.length;i++) zF(abQ0
{ v>_83P`
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), }:(;mW8
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ??lsv(v-
nStartPos,nEndPos,i); >X*Y jv:r
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); TSVlZy~Xo
fileSplitterFetch.start(); dFmpx%+p
} )>@%;\qV
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %!8w)1U
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); LIT`~D
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", )&l5I4CIf
nEndPos = " + nFileLength); <r
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// fileSplitterFetch[nPos.length-1].start(); H-mQ{K^
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//等待子线程结束 @^GI :z
//int count = 0; J0B*V0'zR
//是否结束while循环 uvJ&qd8M
boolean breakWhile = false; M*D@zb0ia
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while(!bStop) .9?GKD
{ 2#N?WlYw<S
write_nPos(); ~y"OyO i&
Utility.sleep(500); Uyxn+j5
breakWhile = true; JP^\
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for(int i=0;i<nStartPos.length;i++) \fp'=&tp~a
{ X*9-P9x(6
if(!fileSplitterFetch.bDownOver) 5rmQ:8_5
{ }$g"|;<ha
breakWhile = false; N-q6_
break; F{c8{?:
} .1z=VLKF'
} .{|SKhXk
if(breakWhile) f4&;l|R0a
break; r$Ni>[as
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VTY # {
//count++; yXqC
//if(count>4) Z4E6J'B8
// siteStop(); i0*Cs#(=h
} b"nkF\P@Fj
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System.err.println("文件下载结束!"); fRq+pUxU
} DLD9
catch(Exception e){e.printStackTrace ();} ,_s.amL3O{
} u%Mo.<PI
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//获得文件长度 \DWKG~r-%
public long getFileSize() L,ax^]
{ J3e'?3w[
int nFileLength = -1; h:sf?X[
try{ g"kET]KP"
URL url = new URL(siteInfoBean.getSSiteURL()); U#Iwe=
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 0C\cM92o
httpConnection.setRequestProperty("User-Agent","NetFox"); k8@bQ"#b
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int responseCode=httpConnection.getResponseCode(); j5A>aj
if(responseCode>=400) TBky+]p@
{ #2$wI^O
processErrorCode(responseCode); ~wOMT
return -2; //-2 represent access is error wXZ9@(^
} qk>SM|{
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String sHeader; f9
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for(int i=1;;i++) G)c+GoK
{ c5:0`~5Fn
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); SuNc&e#(
//Utility.log(in.readLine()); <#199`R
sHeader=httpConnection.getHeaderFieldKey(i); +$xw0)|
if(sHeader!=null) ;' |CSjco
{ ^:mKTiA-
if(sHeader.equals("Content-Length")) TTbJ9O<43
{ U2tgBF?)A
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); mAY/J0_
break; ~D`R"vzw=
} CfD4m,6
} q?)5yukeF
else _qpIdQBo
break; "gzn%k[D9m
} >Z<ZT
} 1zw,;m n
catch(IOException e){e.printStackTrace ();} a`]ZyG*P
catch(Exception e){e.printStackTrace ();} E>gLUMG$
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Utility.log(nFileLength); `ZO5-E
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return nFileLength; +ZGH
} vRD(* S9^
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//保存下载信息(文件指针位置) m!!;CbPo
private void write_nPos() k>8OxpaWv?
{ [u J<]
try{ k.Gt}\6zP
output = new DataOutputStream(new FileOutputStream(tmpFile)); gp~-n7'~O
output.writeInt(nStartPos.length); ZtP/|P5@
for(int i=0;i<nStartPos.length;i++) !{ _:k%B
{ -]Mk}
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// output.writeLong(nPos); rM6S%rS
output.writeLong(fileSplitterFetch.nStartPos); X7:Dw]t
output.writeLong(fileSplitterFetch.nEndPos); Z0D&ayzkh^
} \$t{K
output.close(); Z=%u:K}[
} 4`cf FowK~
catch(IOException e){e.printStackTrace ();} B6\/xKmv?8
catch(Exception e){e.printStackTrace ();} gvo5^O+)HH
} JHVndK4L
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//读取保存的下载信息(文件指针位置) 9ao?\]&t
private void read_nPos() xlgT1b:6
{ }g%&}`%'
try{ @y0kX<M
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 3+:NX6Ewb*
int nCount = input.readInt(); d~QJ}a
nStartPos = new long[nCount]; =
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nEndPos = new long[nCount]; >s,*=a
for(int i=0;i<nStartPos.length;i++) 4"{g{8
{ Bxj4rC[
nStartPos = input.readLong(); dr(e)eD(R>
nEndPos = input.readLong(); YhAO
} KK-+vq
input.close(); ZX{eggXl
} w>Ft5"z
catch(IOException e){e.printStackTrace ();} b+Vlq7Bc
catch(Exception e){e.printStackTrace ();} N5k9o:2
} 5`K'2
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private void processErrorCode(int nErrorCode) p{SIGpbR&
{ 'Nx"_jQ
System.err.println("Error Code : " + nErrorCode); m5KLi
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} Kj6+$l
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//停止文件下载 *t={9h
public void siteStop() +,D82V7S
{ +ZBj_Vw*|
bStop = true; :X*uE^bH
for(int i=0;i<nStartPos.length;i++) qrt2uE{K
fileSplitterFetch.splitterStop(); )oS~ish
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} .=c@ps
} W}wd?WIps
//负责部分文件的抓取 -**fT?n
**FileSplitterFetch.java 2Paw*"U
*/ !W=2ZlzS
package NetFox; FOcDBCrOe
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import java.io.*; a$6pA@7}
import java.net.*; q#Ik3 5
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public class FileSplitterFetch extends Thread { 2L 1Azx
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String sURL; //File URL \z2d=E
long nStartPos; //File Snippet Start Position B_.>Q8tK;
long nEndPos; //File Snippet End Position } x'o`GuUf
int nThreadID; //Thread's ID r8L'C
boolean bDownOver = false; //Downing is over `"bp-/
boolean bStop = false; //Stop identical ;[Hrpl
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FileAccessI fileAccessI = null; //File Access interface I]ol[
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException E95VR?nUg
{ Y[fbmn^
this.sURL = sURL; sF#t{x/sW
this.nStartPos = nStart; i"hn%u$V
this.nEndPos = nEnd; nSU7,K`PM
nThreadID = id;
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 ^#2Y4[@
} ]PXpzruy
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public void run() :SpPT
{ B&H
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while(nStartPos < nEndPos && !bStop) \Ng[lN
{ RjX#pb
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try{ &oiBMk`*
URL url = new URL(sURL); HC ?XNR&
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); pJwy~ L
httpConnection.setRequestProperty("User-Agent","NetFox"); 22m'+3I~Y
String sProperty = "bytes="+nStartPos+"-"; v_@!u`
httpConnection.setRequestProperty("RANGE",sProperty); ZbcpE~<a
Utility.log(sProperty); & |o V\L
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InputStream input = httpConnection.getInputStream(); &rxR"^x\
//logResponseHead(httpConnection); }L*cP;m#
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byte[] b = new byte[1024]; $(%t^8{a~G
int nRead; nyB~C7zR
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) bpeWK&
{ n7Ia8?8-l
nStartPos += fileAccessI.write(b,0,nRead); bga2{<VF
//if(nThreadID == 1) tMy@'nj
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _&m
} \(bML#I
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Utility.log("Thread " + nThreadID + " is over!"); ffYiu4$m
bDownOver = true; hYN b9^
//nPos = fileAccessI.write (b,0,nRead); VN8ao0^d;d
} 4%k_c79>
catch(Exception e){e.printStackTrace ();} ?wx|n_3<:
} {GiR-q{t
} Z5o6RTi
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//打印回应的头信息 oFV>b
public void logResponseHead(HttpURLConnection con) 5q?ZuAAA
{ <&rvv4*H
for(int i=1;;i++) ,9p
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{ QY<2i-A
String header=con.getHeaderFieldKey(i); y(8AxsROp
if(header!=null) Pw'3ya8
//responseHeaders.put(header,httpConnection.getHeaderField(header)); `=Hh5;ep
Utility.log(header+" : "+con.getHeaderField(header)); 7>J8\=
else (v8jVbg
break; OE/O:F:1j
} S0Y$$r
} X}xy
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public void splitterStop() 8:,l+[\
{ GRb"jF>ut
bStop = true; pVt8z|p_;{
} MI@id
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} p/xxoU
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/* ?y7x#_Exc
**FileAccess.java (AdQ6eGM b
*//文件访问(定位,写) %@5f+5{i!z
package NetFox; YzSUJ=0/
import java.io.*; { CkxUec
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public class FileAccessI implements Serializable{ @
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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 \&J7>vu^y
RandomAccessFile oSavedFile; !~cTe!T
long nPos; /PAxPZf_
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mV}
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public FileAccessI() throws IOException |Gb"%5YD
{ G_g~-[O
this("",0); 3ADTYt".
} "EQ-`b=I4
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public FileAccessI(String sName,long nPos) throws IOException z{cI G8z
{ z1?7}9~`0c
oSavedFile = new RandomAccessFile(sName,"rw"); 6yKr5t H4
this.nPos = nPos; 52BlFBNV
oSavedFile.seek(nPos); h&||Ql1
} ;GO>#yg4Eh
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public synchronized int write(byte[] b,int nStart,int nLen) vDz)q
{ ](4V3w.
int n = -1; V4}9f5FR
try{ ,L^eD>|j5
oSavedFile.write(b,nStart,nLen); Iu^#+n
n = nLen; xCD|UC46?X
} )R+@vh#Q<$
catch(IOException e) a%7ju4CVj
{ xXM`f0s@+]
e.printStackTrace (); Z}TuVE
} {=j!2v#8~
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return n; !-%i" a
} ^wCjMi(sj
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} i2A>T/?{
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/* c%r?tKG6
**SiteInfoBean.java :f?\ mVS+
*/ gYfN?A*`_
package NetFox; ~T9%%W[
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public class SiteInfoBean { e'mm4 2
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private String sSiteURL; //Site's URL R_:47.qq
private String sFilePath; //Saved File's Path $&