/* ) H+d.Y
**SiteFileFetch.java l_ b_-p
*/ _[%n ~6
package NetFox; nUqL\(UuY
import java.io.*; ?cJA^W
import java.net.*; ]7l{g9?ZtV
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public class SiteFileFetch extends Thread { ,@479ZvvR3
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SiteInfoBean siteInfoBean = null; //文件信息Bean fOLnK
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long[] nStartPos; //开始位置 u`+'lBE,
long[] nEndPos; //结束位置 v!KJ|c@m
FileSplitterFetch[] fileSplitterFetch; //子线程对象 D=JlA~tS>
long nFileLength; //文件长度 yH+c#w
boolean bFirst = true; //是否第一次取文件 3wo'jOb
boolean bStop = false; //停止标志 c`pYc
File tmpFile; //文件下载的临时信息 Cg7)S[zl
DataOutputStream output; //输出到文件的输出流 "G@E6{/
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) w#rVSSXQ3
public SiteFileFetch(SiteInfoBean bean) throws IOException :U8k|,~f
{ }Wqtip:L
siteInfoBean = bean; n@_)fFD%
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); IOS^|2:,
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); G-ZhGbAI7
if(tmpFile.exists ()) N-xnenci
{ eZA6D\
bFirst = false; q6Rw4
read_nPos(); ~\3l!zIq
} mfz"M)1p1
else `}Eh[EOHJ
{ 03C .Xh=!
nStartPos = new long[bean.getNSplitter()]; Z"]xdOre
nEndPos = new long[bean.getNSplitter()]; $q^O%(
} \:h0w;34O
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} dt0T t
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public void run() DgVyy&7>
{ k}#@8n|b
//获得文件长度 N7a[B>+`
//分割文件 >6w@{p2B
//实例FileSplitterFetch Y1|^>C#a
//启动FileSplitterFetch线程 |MVV +.X
//等待子线程返回 ig+k[`W
try{ 2G H)iUmc
if(bFirst) Ls(&HOK[p
{ JOPTc]
nFileLength = getFileSize(); mcCB7<.
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if(nFileLength == -1) w gmWo8
{ yX`J7O{=
System.err.println("File Length is not known!"); eXc[3ceUr
} 4I
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else if(nFileLength == -2) f^~2^p
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{ M.X}K7Z_/
System.err.println("File is not access!"); lu3Q, W
} =#jTo|~u4o
else [+_\z',u
{ ]LMiMj
for(int i=0;i<nStartPos.length;i++) i:;$oT
{ Zi
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); 4bE42c=Ca7
} ]bf'
for(int i=0;i<nEndPos.length-1;i++) 4^0\dq
{ xiEcEz'lk
nEndPos = nStartPos[i+1]; . c#90RP
} Oxpo6G
nEndPos[nEndPos.length-1] = nFileLength; 58 kv#;j
} )eVzS j>MT
} zI(xSX@
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//启动子线程 vs*>onCf
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; e<kpcF5{\
for(int i=0;i<nStartPos.length;i++) XadG\_?t`
{ .[#xQ=9`
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), LE<:.?<Z-
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ^kc>m$HY
nStartPos,nEndPos,i); -?[O"D"c
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Tq.MubaO
fileSplitterFetch.start(); iOKr9%9?Z
} y/z9Ce*>
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), p!C_:Z5i
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ^*HVP*
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", {`($Q$Q1
nEndPos = " + nFileLength); QziN]
// fileSplitterFetch[nPos.length-1].start(); 'W}~)+zK
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//等待子线程结束 4fZY8
//int count = 0; 8moUK3w
//是否结束while循环 ?0? x+
boolean breakWhile = false; l#
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while(!bStop) )Uc$t${en
{ )r-T=
write_nPos(); *xEI
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Utility.sleep(500); zuK/(qZ
breakWhile = true; F">Nrj-bs
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for(int i=0;i<nStartPos.length;i++) 5w]DncdQ~
{ &19lk
if(!fileSplitterFetch.bDownOver) L[`R8n1C
{ SJso'6 g
breakWhile = false; )e@01l
break; Z|V"8jE
} C3&17O6
} "bv,I-\
if(breakWhile) EI[e+@J
break; xgZV0!%
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//count++; Np|:dP9#}
//if(count>4) =>gyc;{2K<
// siteStop(); !%SdTaC{T
} Fr1;)WV
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System.err.println("文件下载结束!"); jydp4ek_n
} MzBfHt'Rk
catch(Exception e){e.printStackTrace ();} RTdD]pE8Q
} G1`mn$`kq
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//获得文件长度 DLwC5Iir
public long getFileSize() <~IH`
{ 0X] ekq
int nFileLength = -1; ?^+#pcX]t|
try{ 4d{"S02h
URL url = new URL(siteInfoBean.getSSiteURL()); x!Z:K5%O
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); F{a0X0ru~
httpConnection.setRequestProperty("User-Agent","NetFox"); S!`4Bl
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int responseCode=httpConnection.getResponseCode(); 8:3oH!n
if(responseCode>=400) Y yQf
{ @lb=-oR!~
processErrorCode(responseCode); pgLzFY['
return -2; //-2 represent access is error 2?#y
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} M"$jpBN*
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String sHeader; <> &e/
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for(int i=1;;i++) rw}5nv
{ qv
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); :IP;FrcMP
//Utility.log(in.readLine()); $S($97IU=
sHeader=httpConnection.getHeaderFieldKey(i); ~pX(w!^
if(sHeader!=null) ?~]1Gd
{ .N-'; %8
if(sHeader.equals("Content-Length")) #z-iL!?
{ V7KtbL#
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ]yj4~_&O
break; #Tgz,e9
} (Fbm9(q$d
} } K+Q9<~u
else 7gZVg@
break; {kRDegby
} Skr\a\
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} 0`g}(}'L
catch(IOException e){e.printStackTrace ();} `JY>v io
catch(Exception e){e.printStackTrace ();} |p=.Gg=2
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Utility.log(nFileLength); @4 Os?_gJ\
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return nFileLength; >[E|p6jgT
} ei|*s+OZu
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//保存下载信息(文件指针位置) (>+k 3
private void write_nPos() 5tgILxSK
{ Hb@G*L$
try{ 4$q)e<-
output = new DataOutputStream(new FileOutputStream(tmpFile)); e GqvnNv
output.writeInt(nStartPos.length); '5OVs:)"^
for(int i=0;i<nStartPos.length;i++) lD;,I^Lt6
{ \Z6gXO_
// output.writeLong(nPos); !S >|Qh
output.writeLong(fileSplitterFetch.nStartPos); }jyS\drJ
output.writeLong(fileSplitterFetch.nEndPos); xsY>{/C
} dEAAm=K,<
output.close(); =Nv=Q mO
} +,{Wcb
catch(IOException e){e.printStackTrace ();} 98b9%Z'2f
catch(Exception e){e.printStackTrace ();} vxzf[
} =?`y(k4a
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//读取保存的下载信息(文件指针位置) w ;s ]n
private void read_nPos() ]\os`At
{ :>er^\
try{ -UD~>s
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); NZ%~n:/V#
int nCount = input.readInt(); X,JWLS J
nStartPos = new long[nCount]; 0,L$x*Nj5
nEndPos = new long[nCount]; H[_uVv;}6
for(int i=0;i<nStartPos.length;i++) K#6`LL m
{ iEJQ#5))0
nStartPos = input.readLong(); Ei?9M^w
nEndPos = input.readLong(); ^]sMy7X0IK
} )kY_"= d
input.close(); 23u1nU[0
} ffoo^1}1
catch(IOException e){e.printStackTrace ();} 4MF}FS2)
catch(Exception e){e.printStackTrace ();} Q
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} n[MIa]dK
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private void processErrorCode(int nErrorCode) asmW
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{ abJ@>7V
System.err.println("Error Code : " + nErrorCode); d'x<F[`O
} "e7$q&R
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//停止文件下载 (-Ct!aW|
public void siteStop() L9unhx
{ K+\0}qn
bStop = true; ]\9B?W(#
for(int i=0;i<nStartPos.length;i++) 2t`9_zqLw
fileSplitterFetch.splitterStop(); .5[LQR
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} m^oi4mV
} jO3u]5}.6
//负责部分文件的抓取 T>uWf#&pjs
**FileSplitterFetch.java VqO<+~M,E
*/ <cfH'~
package NetFox; @<w9fzi
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import java.io.*; Z\gg<Q
import java.net.*; \,cKt_{ u
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public class FileSplitterFetch extends Thread { ]x(2}h^S
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String sURL; //File URL U37?P7i's
long nStartPos; //File Snippet Start Position <11Tqb
long nEndPos; //File Snippet End Position ";Ig%]
int nThreadID; //Thread's ID s3E~X
boolean bDownOver = false; //Downing is over 8$jT#\_
boolean bStop = false; //Stop identical n.qxxzEN
FileAccessI fileAccessI = null; //File Access interface Nec(^|[
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException F+y`4>x
{ G$kwc
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this.sURL = sURL; qpwh #^2
this.nStartPos = nStart; !%\To(r[
this.nEndPos = nEnd; RW PdS
nThreadID = id; w3bH|VnU8;
fileAccessI = new FileAccessI(sName,nStartPos);//定位 k| cI!
} QKaj4?p$|S
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public void run() ZO0]+Ko
{ E+c3KqM
while(nStartPos < nEndPos && !bStop) z&vms
{ n]fbV/ x
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try{ @]"9EW
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URL url = new URL(sURL); GV@E<dg$R
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); pBnf^Ew1
httpConnection.setRequestProperty("User-Agent","NetFox");
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String sProperty = "bytes="+nStartPos+"-"; l}-`E@w
httpConnection.setRequestProperty("RANGE",sProperty); |QTqa~~B
Utility.log(sProperty); /FV6lR!0^
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InputStream input = httpConnection.getInputStream(); %+B-Z/1}
//logResponseHead(httpConnection); m;+1;B
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byte[] b = new byte[1024]; 5a|m}2IX
int nRead; 8lGgp&ey
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Wk6&TrWlY
{ 7Z~szD
nStartPos += fileAccessI.write(b,0,nRead); lnSE+YJ>
//if(nThreadID == 1) '*;eFnmvs:
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); aq \TO?
} +siNU#!
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Utility.log("Thread " + nThreadID + " is over!"); PyxN _agf
bDownOver = true; .:!x*v
//nPos = fileAccessI.write (b,0,nRead); -XIvj'u
} y$9t!cx
catch(Exception e){e.printStackTrace ();} dB/I2uGl>
} safS>wM]
} ~I|R}hS
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//打印回应的头信息 YIUmCx0a
public void logResponseHead(HttpURLConnection con) &Wz:-G7<n
{ +pViHOJu&V
for(int i=1;;i++) (ai-n,y
{ |A/_Qe|s2
String header=con.getHeaderFieldKey(i); PjZvLK@a9)
if(header!=null) J*&=J6
//responseHeaders.put(header,httpConnection.getHeaderField(header)); /~huTKA}
Utility.log(header+" : "+con.getHeaderField(header)); LF.~rmPa
else HtYR 0J
break; 4m!3P"$
} j?hyN@ns
} }e=GvWGa
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public void splitterStop() J7^T!7V.
{ xQ
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bStop = true; U9sub6w 6
} '?GZ"C2
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} !Ocg
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/* }M@Jrq+7
**FileAccess.java 6-}e-H
*//文件访问(定位,写) .V:<