/* vl5n%m H>^
**SiteFileFetch.java 9V],X=y~
*/ hKTg~y^
package NetFox; > 4ct[fW+
import java.io.*; `JE>GZY
import java.net.*; Me}TW!GC
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public class SiteFileFetch extends Thread { rq1kj 8%2
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SiteInfoBean siteInfoBean = null; //文件信息Bean Hr+-ndH!Pq
long[] nStartPos; //开始位置 @gqw]_W
long[] nEndPos; //结束位置 `es($7}P_W
FileSplitterFetch[] fileSplitterFetch; //子线程对象 @*DIB+K
long nFileLength; //文件长度 p-pw*wH0
boolean bFirst = true; //是否第一次取文件 (v`;ym
boolean bStop = false; //停止标志 #8z,'~\
File tmpFile; //文件下载的临时信息 w}Upa(dU
DataOutputStream output; //输出到文件的输出流 2&Byq
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ,OKM\N,
public SiteFileFetch(SiteInfoBean bean) throws IOException )R^Cq o'
{ K7hf m%`N
siteInfoBean = bean; }R1`ThTM
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); gr
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); j>o +}p?3I
if(tmpFile.exists ()) bJ|?5
{ <]'"e]
bFirst = false; @g75T` N
read_nPos(); N4To#Q1w
} 0H3T'J%r
else $&8h=e~]-
{ GVEWd/:X(
nStartPos = new long[bean.getNSplitter()]; )zXyV]xe
nEndPos = new long[bean.getNSplitter()]; Y(y9l{'
} W"kw>JEt
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} %]ayW$4
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@ >(u:.
public void run() 5b#6 Y
{ qP"JNswI_
//获得文件长度 X[Ek'=}
//分割文件 be:phS4vz
//实例FileSplitterFetch -L9R&r#_e
//启动FileSplitterFetch线程 TJXraQK-=
//等待子线程返回 <KwK
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try{ Z02s(y=k1
if(bFirst) 16QbB;
{ \5P.C
nFileLength = getFileSize(); qu~|d}0
if(nFileLength == -1) Fd[h9 G
{
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System.err.println("File Length is not known!");
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} Yg)V*%0n
else if(nFileLength == -2) M%{?\)s
{ h_~|O[5|)
System.err.println("File is not access!"); uXLZtfu{
} b#g
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else P!y`$Ky&
{ ZCBPO~&hO'
for(int i=0;i<nStartPos.length;i++) F:J7|<J^F
{ ^W"Q(sh
nStartPos = (long)(i*(nFileLength/nStartPos.length)); f9,EWuQNS
} ^QAiySR`0
for(int i=0;i<nEndPos.length-1;i++) JblmXqtC
{ n`)7Y`hBhP
nEndPos = nStartPos[i+1]; (s"iC:D6U
} C6d]tLE
nEndPos[nEndPos.length-1] = nFileLength; )M'UASB;8
} ~"0@u
} -2&i)S0R
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//启动子线程 GzFE%< 9F
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ,<3uc
for(int i=0;i<nStartPos.length;i++) _IL2-c8
{ 3u*hTT
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), wm=RD98
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), =x^l[>sz
nStartPos,nEndPos,i); VkpHzr[k
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); b(RBG
fileSplitterFetch.start(); 0[lsoYUq
} rQEi/
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :wU_-{>>2
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); *v
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", *J_iXu|
nEndPos = " + nFileLength); VD24X
// fileSplitterFetch[nPos.length-1].start(); poD\C;o"
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//等待子线程结束 90s;/y(
//int count = 0; T|@#w%c''
//是否结束while循环 Cqgk
boolean breakWhile = false; %f(S'<DhC
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while(!bStop) gcg>Gjp
{ i_u
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write_nPos(); e3eVvl5]
Utility.sleep(500); mF'-Is
breakWhile = true; $(gGoL<
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for(int i=0;i<nStartPos.length;i++) |mxNUo-
{ 3Q"F(uE v^
if(!fileSplitterFetch.bDownOver) .G}k/`a
{ RzS|dGNQE
breakWhile = false; bar0{!Y"
break; st?gA"5w
} 7qg<[
} [5Fd P0
if(breakWhile) i3Hz"Qs;
break; Sty!atEWT
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//count++; R-pH Quu3
//if(count>4) u 1ZJHry
// siteStop(); mX&xn2}qZ"
} Hz?!BV0
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System.err.println("文件下载结束!"); |3{+6cg
} f.oP
catch(Exception e){e.printStackTrace ();} ~BZXt7DE
} 3ai (x1%
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//获得文件长度 -J,Q;tj
public long getFileSize() 7DtIVMiK
{ <%z@
int nFileLength = -1; -Z%F mv8
try{ u7;`4P:o@
URL url = new URL(siteInfoBean.getSSiteURL()); z)lM2x>|*
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); pkX v.D`
httpConnection.setRequestProperty("User-Agent","NetFox"); 47IY|Jdz
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int responseCode=httpConnection.getResponseCode(); upypxC
if(responseCode>=400) l'U1
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{ XOrcygb2
processErrorCode(responseCode); akT|Y4KxD
return -2; //-2 represent access is error Lt1U+o[ot
} Ic'Q5kfM
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String sHeader; 90~*dNk
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for(int i=1;;i++) W`$[j0
{ D?e"U_
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); U98_M)-%&
//Utility.log(in.readLine()); P5xI
sHeader=httpConnection.getHeaderFieldKey(i); ]pnYvXf>!
if(sHeader!=null) =3*Jj`AV
{ |rMq;Rgu?
if(sHeader.equals("Content-Length")) M% @
{ flG=9~qcGQ
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); F>N+<Z
break; t5paYw-b
} nfX12y_SXL
} td >,TW=A*
else .Gh%p`<
break; Ah-8"`E
} j 1(T )T
} *>k!hq;j
catch(IOException e){e.printStackTrace ();} $A`xhh[
catch(Exception e){e.printStackTrace ();}
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Utility.log(nFileLength); >uTPjR[
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return nFileLength; zPVd(V~(T
} KmQ^?Ad-C
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//保存下载信息(文件指针位置) xW>ySEf
private void write_nPos() SK+@HnKd
{ IIxJqGN:
try{ e_/x&a(i8
output = new DataOutputStream(new FileOutputStream(tmpFile)); ]>D)#
output.writeInt(nStartPos.length); ~:[!Uyp0b
for(int i=0;i<nStartPos.length;i++) ^av6HFQ
{ :a.0hes
// output.writeLong(nPos); ?*H9-2W@
output.writeLong(fileSplitterFetch.nStartPos); 3B{[%#vO
output.writeLong(fileSplitterFetch.nEndPos); ?,07;>&
} d+6]u_J
output.close(); P16YS8$
} BwxnDe G)
catch(IOException e){e.printStackTrace ();} rjUBLY1(
catch(Exception e){e.printStackTrace ();} V^n0GJNo
} 0(gq;H5x'
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//读取保存的下载信息(文件指针位置) b`CWp;6Y
private void read_nPos() ;
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{ .:y5U}vR
try{ 5 y
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); \"x>JW4w
int nCount = input.readInt(); sTkkM9
nStartPos = new long[nCount]; /L&M,OUcr.
nEndPos = new long[nCount]; X|b2c+I
for(int i=0;i<nStartPos.length;i++) 9t K>gwb
{ ^e%}[q[>|
nStartPos = input.readLong(); A
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nEndPos = input.readLong(); r`6:Q&&
} 3qi_]*dD
input.close();
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} q8xd*--#
catch(IOException e){e.printStackTrace ();} `T"rG}c
catch(Exception e){e.printStackTrace ();} ]^K;goQv
} VFj(M
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private void processErrorCode(int nErrorCode) 3b!,D
{ c?K~/bx.
System.err.println("Error Code : " + nErrorCode); Ei5 wel6!
} uWjU OJEe
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//停止文件下载 oNM?y:O
public void siteStop() $^_|j1z#i
{ xWE8Wm
bStop = true; V8PLFt;
for(int i=0;i<nStartPos.length;i++) "DQ'C%sL9
fileSplitterFetch.splitterStop(); m\vmY
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} @{d\j]Nw
} >7b)y
//负责部分文件的抓取 ZFvyL8o
**FileSplitterFetch.java qX#MV>1
*/ 9+qOP>m
package NetFox; dqc1q:k?$
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import java.io.*; mfom=-q3k
import java.net.*; 4(cJ^]wb ^
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public class FileSplitterFetch extends Thread { W5pb;74|
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String sURL; //File URL O1P=#l iYX
long nStartPos; //File Snippet Start Position qOy=O
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long nEndPos; //File Snippet End Position j9R6ta3\l
int nThreadID; //Thread's ID `tEo]p
boolean bDownOver = false; //Downing is over ^G|98yc!'
boolean bStop = false; //Stop identical xT*d/Oa w
FileAccessI fileAccessI = null; //File Access interface Ug%_@t/?
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException !EBY@ Y1
{ z[nS$]u
this.sURL = sURL; 0g=`DSC<(
this.nStartPos = nStart; "Fnq>iR-
this.nEndPos = nEnd; }|wv]U~
nThreadID = id; :c.JhE3D
fileAccessI = new FileAccessI(sName,nStartPos);//定位 6'C2SihYp
} cYNV\b4-
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public void run() xJwG=$o
{ .Y*f2A.v
while(nStartPos < nEndPos && !bStop) aP-<4uGx
{ v?:: |{
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[xZU!=
try{ OMrc_)he\
URL url = new URL(sURL); `>lzlEhKV
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ,0N94pKy
httpConnection.setRequestProperty("User-Agent","NetFox"); .12aUXo(
String sProperty = "bytes="+nStartPos+"-"; T*[
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httpConnection.setRequestProperty("RANGE",sProperty); w:i:~f .
Utility.log(sProperty); ,!#ccv+Vm%
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InputStream input = httpConnection.getInputStream(); JXqr3Np1
//logResponseHead(httpConnection); l$xxrb9P!
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byte[] b = new byte[1024]; EbY,N:LK
int nRead; ';B#Gx
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 3ec`Wa
{ iw9Q18:I}
nStartPos += fileAccessI.write(b,0,nRead); OE`X<h4r
//if(nThreadID == 1) SA"p\}"
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); <|B1wa:|
} MCTsi:V>+
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Utility.log("Thread " + nThreadID + " is over!"); XMIbUbUk-
bDownOver = true; ~B i_7 Q
//nPos = fileAccessI.write (b,0,nRead); hT g<*
} `#P$ ]:
catch(Exception e){e.printStackTrace ();} PmpNAVE'
} K2)!h.W
} iBg3mc@OO
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//打印回应的头信息 d3Mva,bw<
public void logResponseHead(HttpURLConnection con) G3i !PwW
{ LNYKm~cN
for(int i=1;;i++) =='Td[
{ r,1e 'd:
String header=con.getHeaderFieldKey(i); fV>CZ^=G
if(header!=null) k?B[>aQn.0
//responseHeaders.put(header,httpConnection.getHeaderField(header)); )!bUR\
Utility.log(header+" : "+con.getHeaderField(header)); Uz7oL8
else %r\n%$@_
break; '9p@vi{\
} DOS0;^f
} #6v27:XK
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public void splitterStop() 2F{hg%
{ gV;H6"
bStop = true; e}Vw!w
} /^SAC%PD
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} ,_.I\EY[
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/* s8"8y`u
**FileAccess.java {P%9
*//文件访问(定位,写) u7%D6W~m0
package NetFox; IY'=DePd
import java.io.*; ;ea]$9
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public class FileAccessI implements Serializable{ $,=6[T!z+e
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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 S_MyoXV
RandomAccessFile oSavedFile; z}QwP~Z
long nPos; "xI"
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public FileAccessI() throws IOException k %e^kej
{ {R<Ea
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this("",0); >zsid:
}
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public FileAccessI(String sName,long nPos) throws IOException K%<j=c
{ g6@Fp7T
oSavedFile = new RandomAccessFile(sName,"rw"); c .3ZXqpI;
this.nPos = nPos; ,u }XWV
oSavedFile.seek(nPos); $E<Esf$
} _R'Fco
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public synchronized int write(byte[] b,int nStart,int nLen) ?&G`{Ey
{ E1dD7r\
int n = -1; T{wpJ"F5<]
try{ n~"$^Vr
oSavedFile.write(b,nStart,nLen); q5h*`7f
n = nLen; `g8E1-]l
} Q$& sTM
catch(IOException e) w\54j)rb
{ P./V6i<:
e.printStackTrace (); ~7~~S*EQ
} x";w%
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return n; Tus}\0/i>
} f.aSKQD
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} D']ZlB'K
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/* 5>3}_
**SiteInfoBean.java d(vsE%/!
*/ 5w %_$x
package NetFox; =U8a ?0
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public class SiteInfoBean { Hsih[f
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private String sSiteURL; //Site's URL TG}*5Z`
private String sFilePath; //Saved File's Path 0TfS=scT
private String sFileName; //Saved File's Name ;^*Unyt[4]
private int nSplitter; //Count of Splited Downloading File 4h@Z/G!T3
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public SiteInfoBean() !d<"nx[2`
{//nSplitter的缺省值为5 k(zsm"<q
//default value of nSplitter is 5 ?9l [y
this("","","",5); $0bjKy
} 6KD `oUx
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) [:xiZ
{ ~m|Mg9-
sSiteURL= sURL; KIR'$ 6pn~
sFilePath = sPath; M?= ;JJ:
sFileName = sName; da1]mb=4 5
this.nSplitter = nSpiltter; : ^ 8
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} *x)Ozfe
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public String getSSiteURL() >iS`pb
{ t){"Tfc:
return sSiteURL; -(O-%
} _qbIh
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public void setSSiteURL(String value) \*,=S52
{ }g$(+1g
sSiteURL = value; G^q3Z#P
} JG9` h#
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public String getSFilePath() K}6dg<
{ )'*5R <#
return sFilePath; 9-]i.y
} w8g,a]p
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public void setSFilePath(String value) @ym/27cRE
{ ^z,_+},a3T
sFilePath = value; iCHt1VV]
} Bi@&nAhn@
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public String getSFileName() DJP2IP
{ -hkQ2[Ew#
return sFileName; [:^-m8QC
} $9S(_xdI&
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public void setSFileName(String value) Q,&