/* =~,2E;#X
**SiteFileFetch.java Rw63{b/
*/ W}k/>V_
package NetFox; hVz]',
import java.io.*; qm9=Ga5
import java.net.*; aU.!+e%_
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public class SiteFileFetch extends Thread { 'aeuL1mz
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SiteInfoBean siteInfoBean = null; //文件信息Bean GAs.?JHd
long[] nStartPos; //开始位置 svt3gkR0
long[] nEndPos; //结束位置 7uu\R=$
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Oku7&L1
long nFileLength; //文件长度 g%)cyri
boolean bFirst = true; //是否第一次取文件 39pA:3iTd
boolean bStop = false; //停止标志 Q7zpu/5?
File tmpFile; //文件下载的临时信息 N3)n**
DataOutputStream output; //输出到文件的输出流 d|gfp:Z`a
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) oOLj?
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public SiteFileFetch(SiteInfoBean bean) throws IOException [T3%Xt'4
{ X-CoC
siteInfoBean = bean; |NTqJ j
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 8"[{[<-
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); "ChJR[4@
if(tmpFile.exists ()) lQRtsmZ0
{ w}97`.Kt!n
bFirst = false; D)[(
read_nPos(); yr.sfPnJK
} y34 <B)Wy
else 5]kv1nQ
{ }dU!PZ9N)
nStartPos = new long[bean.getNSplitter()]; 4,=;:#n,J
nEndPos = new long[bean.getNSplitter()]; =<TJ[,h
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} VTX6_&Hc1g
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} #7YJ87<E
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public void run() m*lcIa
{ yI-EF)A@;
//获得文件长度 oykb8~u}}
//分割文件 5CfD/}{:#I
//实例FileSplitterFetch W]>%*n
//启动FileSplitterFetch线程 iJKGzHvS
//等待子线程返回 UQP>yuSx
try{ D mky!Cp
if(bFirst) y M-k]_
{ P*ZMbAf.
nFileLength = getFileSize(); =L?2[a$2;
if(nFileLength == -1) ^oE#;aS
{ u2[L^]|
System.err.println("File Length is not known!"); d+
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} ZC^NhgX
else if(nFileLength == -2) uA t{WDHm
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System.err.println("File is not access!"); e)XnS '
} iG=Di)O
else }{&;\^i
{ CHCT
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for(int i=0;i<nStartPos.length;i++) [;~"ctf{
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); F]0
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} o?IrDQ2gmh
for(int i=0;i<nEndPos.length-1;i++) .Ep&O#
{ s+=':Gcb(C
nEndPos = nStartPos[i+1]; p3T:Y_
} rJRg4Rog
nEndPos[nEndPos.length-1] = nFileLength; ##alzC
} /?S^#q>m%
} xm=$D6O:
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//启动子线程 _lm^v%J$
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Zdfh*MHMg
for(int i=0;i<nStartPos.length;i++) B;piO-hH
{ =NNxe"Kd;U
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3kwkU
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), W|s";EAM
nStartPos,nEndPos,i); OpK_?XG
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Nn U`u.$D
fileSplitterFetch.start(); vWa\8y f
} h 'Hnq m
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), % w
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Fw}|c
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", <zAYq=IU
nEndPos = " + nFileLength); ip1gCH/?_+
// fileSplitterFetch[nPos.length-1].start(); N8J(RR9O
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//等待子线程结束 @*|T(068&
//int count = 0; UG}2q:ST
//是否结束while循环 P^<to(|
boolean breakWhile = false; D`KaIqLz
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while(!bStop) Imq-5To#
{ T{yJL<
write_nPos(); VC%.u.< F
Utility.sleep(500); $3%+N|L
breakWhile = true; hMV>5Y[s
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for(int i=0;i<nStartPos.length;i++) ,g,Hb\_R)
{ Vobq|Rd/%
if(!fileSplitterFetch.bDownOver) i` ay9J8N
{ ,@Kn@%?$
breakWhile = false; Hk(=_[S
break; 2Vw2r@S/
} 'G>9 iw
} g=,}j]tl
if(breakWhile) qOnGP{
break; TNK1E
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//count++; eg1F[~YL/
//if(count>4) BL"7_phM,
// siteStop(); @X560_x[q
} JO90TP
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System.err.println("文件下载结束!"); :M<] 6o
} >VX'`5r>uw
catch(Exception e){e.printStackTrace ();} ZE~zs~z|
} GQQp(%T
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//获得文件长度 UP%6s:>:
public long getFileSize() "^;h'
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int nFileLength = -1; ]]3rSXs2}J
try{ j]vEo~Bbh
URL url = new URL(siteInfoBean.getSSiteURL()); Nd{U|k3pL
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); j2.7b1s
httpConnection.setRequestProperty("User-Agent","NetFox"); S kB*w'k
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int responseCode=httpConnection.getResponseCode(); ik;F@kdm`
if(responseCode>=400) Chx+p&!
{ N]6t)Zv
processErrorCode(responseCode); fGRV]6?V
return -2; //-2 represent access is error 4"\cA:9a
} .aVt d
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String sHeader; G#^0Bh&
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for(int i=1;;i++) xgpf2y!{
{ Dg{d^>T!_x
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); N^@:+,<3
//Utility.log(in.readLine()); ;[(d=6{hc]
sHeader=httpConnection.getHeaderFieldKey(i); het<#3Bo
if(sHeader!=null) J_-fs#[x
{ {IaDZ/XS6
if(sHeader.equals("Content-Length")) '3WtpsKA
{ ^w2 HF
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); n;Q8Gg2U
break; \iP@|ay9
} Ym!e}`A\F
} HEIg_6sb
else Xtz:^tg
break; \g
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} _L$a[zH
} QCE7VV1Rw
catch(IOException e){e.printStackTrace ();} 0Oc?:R'$
catch(Exception e){e.printStackTrace ();} 5b*knN>
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Utility.log(nFileLength); TsG x2[
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return nFileLength; u*rP8GuS
} '[%#70*
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//保存下载信息(文件指针位置) 6Io}3}3
private void write_nPos() L/`1K_\l
{ w D r/T3
try{ :zLf~W
output = new DataOutputStream(new FileOutputStream(tmpFile)); T<?kH
output.writeInt(nStartPos.length); FO:L+&hr?>
for(int i=0;i<nStartPos.length;i++) &} `a"tYr
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// output.writeLong(nPos); D&D6!jz
output.writeLong(fileSplitterFetch.nStartPos); " QiR
output.writeLong(fileSplitterFetch.nEndPos); PPIO<K 3`
} $?bD55
output.close(); kLZVTVSJt
} ]+W){W=ai
catch(IOException e){e.printStackTrace ();} V
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catch(Exception e){e.printStackTrace ();} ,w H~.LHi
} F P|cA^$<
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//读取保存的下载信息(文件指针位置) [H>u'fy:C
private void read_nPos() 3?I!
{ FiUwy/,ZV
try{ "QxULiw
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); \y]K]iv
int nCount = input.readInt(); n$r`s`}
nStartPos = new long[nCount]; #S'uqP!
nEndPos = new long[nCount]; >RAg63!`
for(int i=0;i<nStartPos.length;i++) 4n7Kz_!SVf
{ ,_Bn{T=U
nStartPos = input.readLong(); NR1M W^R
nEndPos = input.readLong(); 3Z=yCec]
} ;p`to"6IFD
input.close(); ~uty<fP
} QOSMV#Nw%
catch(IOException e){e.printStackTrace ();} P=jsOuW
catch(Exception e){e.printStackTrace ();} jYRSV7d
} nW7: ]
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private void processErrorCode(int nErrorCode) K4<"XF1A:
{ 9n{Y6I
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System.err.println("Error Code : " + nErrorCode); dX@ic,?
} ;M4[Liw~O
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//停止文件下载 %\HPYnIe
public void siteStop() 8Sj<,+XFq
{ wGKxT
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bStop = true; <TtPwUX
for(int i=0;i<nStartPos.length;i++) abR<( H12
fileSplitterFetch.splitterStop(); qpYgTn8l7
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} xL"J?Gy
} "5~?`5Ff
//负责部分文件的抓取 ;'8P/a$
**FileSplitterFetch.java d\]KG(T
*/ %bN{FKNN
package NetFox; LkS tU)
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import java.io.*; =CK% Zo
import java.net.*; Jcze.t
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public class FileSplitterFetch extends Thread { VPYLDg.'
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String sURL; //File URL Yz_}*
long nStartPos; //File Snippet Start Position KYm8|]'g
long nEndPos; //File Snippet End Position s0f+AS|}
int nThreadID; //Thread's ID )__sw
boolean bDownOver = false; //Downing is over -6kX?sNl)X
boolean bStop = false; //Stop identical D5P-$1KPt
FileAccessI fileAccessI = null; //File Access interface Kgr<OL}V J
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException }
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{ oOpEpQ}}q
this.sURL = sURL; lt6wmCe
this.nStartPos = nStart; ue@/o,C>
this.nEndPos = nEnd; 9S@x
nThreadID = id; scH61Y8`
fileAccessI = new FileAccessI(sName,nStartPos);//定位 /g{*px|
} ="& GU%$
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public void run() K
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{ IeYNTk&<
while(nStartPos < nEndPos && !bStop) e&VC}%m
{ zl:by?
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try{ M> WWP3
URL url = new URL(sURL); z.-yL,Rc`-
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); |w|c!;,
httpConnection.setRequestProperty("User-Agent","NetFox"); |> STb\
String sProperty = "bytes="+nStartPos+"-"; 94#,dA,M
httpConnection.setRequestProperty("RANGE",sProperty); ~F'6k&A^q
Utility.log(sProperty); !\R5/-_UU
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InputStream input = httpConnection.getInputStream(); $J4\jIipL
//logResponseHead(httpConnection); by
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byte[] b = new byte[1024]; k37?NoT
int nRead; p]RQ-0
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) &SbdX
{ ';FJs&=I
nStartPos += fileAccessI.write(b,0,nRead); G|Et'k.F4
//if(nThreadID == 1) u.X]K:Yow
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [E
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} u>lt}0
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Utility.log("Thread " + nThreadID + " is over!"); h6D4CT
bDownOver = true; )mm0PJF~q
//nPos = fileAccessI.write (b,0,nRead); yor'"6)i
} MQwxQ{
catch(Exception e){e.printStackTrace ();} }qECpKa0
} zBy} > Jx
} .yy*[56X
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//打印回应的头信息 \HLo%]A@M
public void logResponseHead(HttpURLConnection con) {UP[iw$~
{ ;
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for(int i=1;;i++) h^=;\ng1l
{ Ak@!F6~
String header=con.getHeaderFieldKey(i); zJw5+
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if(header!=null) pmB
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//responseHeaders.put(header,httpConnection.getHeaderField(header));
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Utility.log(header+" : "+con.getHeaderField(header)); hc
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else %oa@2qJ^
break; WBWW7 HK
} ]?=87w
} ,1mL=|na
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public void splitterStop() $f3 IO#N
{ <)T| HKx
bStop = true; ?3BcjD0
} >(a35 b$
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} w~6UOA8}
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/* >IaGa!4
**FileAccess.java oIick
*//文件访问(定位,写) 4aOz=/x2
package NetFox; !2!Zhw2u
import java.io.*; *`+zf7-f
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public class FileAccessI implements Serializable{ 2@tnOs(*
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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 aU(.LC
RandomAccessFile oSavedFile; !rRBy3&
long nPos; z9S
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