/* '?~k`zK
**SiteFileFetch.java E0 Vl}b
*/ ;U|^Tsuc`
package NetFox; h?:lO3)TL=
import java.io.*; zAxwM-`
import java.net.*; q#RVi8('
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public class SiteFileFetch extends Thread { ;mLbJT
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SiteInfoBean siteInfoBean = null; //文件信息Bean [-sE:O`yt
long[] nStartPos; //开始位置 [N/[7Q/y
long[] nEndPos; //结束位置 u= K?K
FileSplitterFetch[] fileSplitterFetch; //子线程对象 snBC +`-
long nFileLength; //文件长度 <'4DMZ-G
boolean bFirst = true; //是否第一次取文件 w%1B_PyDg
boolean bStop = false; //停止标志 X~Li`
File tmpFile; //文件下载的临时信息 1lNg} !)[K
DataOutputStream output; //输出到文件的输出流 iD|"} }01
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) t
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public SiteFileFetch(SiteInfoBean bean) throws IOException {=,?]Z+
{ rY>{L6d
siteInfoBean = bean; 15r<n
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); `
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Nky%v+r
if(tmpFile.exists ()) 5}R/C{fs
{ +6!.)Ea=
bFirst = false; e3wFi,/@
read_nPos(); 5CkM0G`
} P$)9osr
else x
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{ |Js96>B:
nStartPos = new long[bean.getNSplitter()]; m)q;eQs
nEndPos = new long[bean.getNSplitter()]; (iK0T.
} sDCa&"6+@
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} HPT9B?^
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public void run() s&lZxnIjc
{ %f@VOSs
//获得文件长度 ~"5WQK`@
//分割文件 S {z%Q
//实例FileSplitterFetch .J~iRhVOF
//启动FileSplitterFetch线程 z1LATy
//等待子线程返回 ^n<p#0)+a
try{ m\4jiR_o
if(bFirst) $Tq-<FbM)
{ 2&]UFg:8Q
nFileLength = getFileSize(); EG0NikT?
if(nFileLength == -1) /
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{ j*$GP'Df3
System.err.println("File Length is not known!"); {P(Z{9 u%
} oa`,|dA"
else if(nFileLength == -2) D|Z,eench
{ QHsS|\u
System.err.println("File is not access!"); jjz<V(Sk
} "31GC7
else }qW%=;!
{ `2NL'O:
for(int i=0;i<nStartPos.length;i++) 8\y%J!b
{ gzP(LfI5
nStartPos = (long)(i*(nFileLength/nStartPos.length)); N`grr{*_
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for(int i=0;i<nEndPos.length-1;i++) -2tX 15,
{ Eln"RKCt}9
nEndPos = nStartPos[i+1]; {:Z# 8dGe
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nEndPos[nEndPos.length-1] = nFileLength; [8SW0wsk
} 'mug,jM
} ,I@4)RSAH|
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//启动子线程 4%p5X8|\ih
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; _?@>S 7-
for(int i=0;i<nStartPos.length;i++) &.o}(e:]
{ ~@bCSOIy
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ?i(Tc!
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), pp#Kb 2*
nStartPos,nEndPos,i); w]) bQ7)
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); gA!-F}x$
fileSplitterFetch.start(); &6MGPh7T
} N"T~U\R
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _:M6~XHo
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); pLBp[GQ
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", J*,Ed51&7
nEndPos = " + nFileLength); c1CP12
// fileSplitterFetch[nPos.length-1].start(); Z5-"a?{Y
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//等待子线程结束 f;pR8
//int count = 0; UY{
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//是否结束while循环 $1\<>sJH
boolean breakWhile = false; \p@,+ -gX
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while(!bStop) >}O1lsjW:z
{ aiw~4ix
write_nPos(); nf/iZ &
Utility.sleep(500); %nOBs ln
breakWhile = true; HC4ad0Gs+{
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for(int i=0;i<nStartPos.length;i++) b\gl9"X
{ XT~JP
if(!fileSplitterFetch.bDownOver) ;b
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{ 4VaUa8 D
breakWhile = false; N iNZh;
break; yKOf]m>#
} YcRjbF,|6
} ?8! 4!P%n
if(breakWhile) '/;#{("
break; *-_` xe
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//count++; #B`"B
//if(count>4) Cl<`uW3
// siteStop(); AUS?Pt[w
} vxr3|2`
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System.err.println("文件下载结束!"); StP6G ]x
} fBD5K3
catch(Exception e){e.printStackTrace ();} yql+N[
} og.dYs7W4
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//获得文件长度 Lkk'y})/
public long getFileSize() yn!LJT[~2
{ c
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int nFileLength = -1; 3Eiy/
try{ ?)4|WN|c_
URL url = new URL(siteInfoBean.getSSiteURL()); "Oh-`C
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $CL=M
httpConnection.setRequestProperty("User-Agent","NetFox"); Yq`r>g
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int responseCode=httpConnection.getResponseCode(); o0s+ roiD
if(responseCode>=400) LL9Mty,
{ ]wa?~;1^&
processErrorCode(responseCode); MV9{>xX
return -2; //-2 represent access is error Jev@IORN\
} ?@_3B]Fs
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String sHeader; "M_X9n_
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for(int i=1;;i++) Rc?wIL)
{ S:rW}r J
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); RF g$N@g,
//Utility.log(in.readLine()); RU_=VB %
sHeader=httpConnection.getHeaderFieldKey(i); zMtK_ccQ
if(sHeader!=null) jh\q2E~,`
{ HX+'{zm]
if(sHeader.equals("Content-Length")) SRM[IU
{ _u{D #mmO
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); s(Kf%ZoE
break; GE~mu76%
} ]Z<{
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} s'~_pP
else 2c8,H29
break; Om>6<3n
} JWMIZ{/M
} kwGj7'
catch(IOException e){e.printStackTrace ();} )F4er'
catch(Exception e){e.printStackTrace ();} .t"s>jq 1
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Utility.log(nFileLength); oPzt1Y
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return nFileLength; kz,Nz09}W
} Sm+Ek@Ax
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//保存下载信息(文件指针位置) |P5?0{
private void write_nPos() 86IAAO`#
{ {_^sR}%]F
try{ :l3Tt<
output = new DataOutputStream(new FileOutputStream(tmpFile)); *RxbqB-
output.writeInt(nStartPos.length); mqq~&nI
for(int i=0;i<nStartPos.length;i++) 8.Y6r
{ a}jaxGy
// output.writeLong(nPos); tJHzhH)
output.writeLong(fileSplitterFetch.nStartPos); KkAk(9Q/3
output.writeLong(fileSplitterFetch.nEndPos); .~W7{SY[
} "p2PZ)|
output.close(); q3scz
} pN*>A^
catch(IOException e){e.printStackTrace ();} %@H;6
catch(Exception e){e.printStackTrace ();} 4^AE;= Q
} "=yaeEp
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//读取保存的下载信息(文件指针位置) 4~G9._
private void read_nPos() Z"e|DP`
{ tV#x{DN
try{ I!# 42~\
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Gt6$@ji4u
int nCount = input.readInt(); tQ?? nI2
nStartPos = new long[nCount]; oB_{xu$6|
nEndPos = new long[nCount]; ym(r;mj!
for(int i=0;i<nStartPos.length;i++) U]e;=T:3
{ uo 7AU3\
nStartPos = input.readLong(); HpNf f0c
nEndPos = input.readLong(); T!v%NZj3
} \P{VJ^)0
input.close(); 1C .<@IZ
} H~||]_q|
catch(IOException e){e.printStackTrace ();} [0MVsc=
catch(Exception e){e.printStackTrace ();} Ae`K9
} $qIMYX
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private void processErrorCode(int nErrorCode) !y4o^Su[
{ "'6KQnpZ
System.err.println("Error Code : " + nErrorCode); O$#`he/jm
} ajkRL|^
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//停止文件下载 (F$q|qZ%
public void siteStop() {:{NK%
{ GbStqR~^#
bStop = true; "hs`Y4U
for(int i=0;i<nStartPos.length;i++) /A<L
fileSplitterFetch.splitterStop(); EVRg/{X
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} 1[X+6viE
} bS*
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//负责部分文件的抓取 K[T?--H
**FileSplitterFetch.java 5;dnxhf
*/ Du[$6
package NetFox; j>?c]h{-
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import java.io.*; rC/m}`b
import java.net.*; FeSe^ ^dW
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public class FileSplitterFetch extends Thread { /p X\)wi
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String sURL; //File URL LA"`8
long nStartPos; //File Snippet Start Position Bv!j.$0d{
long nEndPos; //File Snippet End Position /Pi{Mv eZM
int nThreadID; //Thread's ID (B,CL222x
boolean bDownOver = false; //Downing is over hua{g_
boolean bStop = false; //Stop identical ;'R{b$B;|
FileAccessI fileAccessI = null; //File Access interface ~{U~9v^v(
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException A9$q;8= <
{ qBKIl=
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this.sURL = sURL; t[iE >
this.nStartPos = nStart; 0P%(4t$pd
this.nEndPos = nEnd; gt'0B-;W
nThreadID = id; i(L;1 `
fileAccessI = new FileAccessI(sName,nStartPos);//定位 obaJT"1
} ha3 Qx
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public void run() 6^UeEmjc
{ vPSH
while(nStartPos < nEndPos && !bStop) 0'z$"(6D
{ !*+~R2&b
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try{ K~v"%sG{`
URL url = new URL(sURL); *4]I#N
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); x:@Ht TX
httpConnection.setRequestProperty("User-Agent","NetFox"); F/&Z1G.
String sProperty = "bytes="+nStartPos+"-"; ",`fGu )
httpConnection.setRequestProperty("RANGE",sProperty); y=5s~7]
Utility.log(sProperty); x1Z?x,-D"
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InputStream input = httpConnection.getInputStream(); N<Ti[Q]G
//logResponseHead(httpConnection); !t~S.`vF
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byte[] b = new byte[1024]; qK;n>BTe
int nRead; @x"vGYKd
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) LnrR#fF]Z
{ xr)kHJ:v
nStartPos += fileAccessI.write(b,0,nRead); c?>Q!sC
//if(nThreadID == 1) d8dREhK&
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); XSn^$$S
} GfL}f9
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Utility.log("Thread " + nThreadID + " is over!"); ?<xGO@b
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bDownOver = true; L;E9"7Jo
//nPos = fileAccessI.write (b,0,nRead); [
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} 2/qfK+a
catch(Exception e){e.printStackTrace ();} ]}~*uT}>
} i nF&Pv