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**SiteFileFetch.java mO];+=3v8
*/ ^e*Tg&
package NetFox; L9(mY `d>"
import java.io.*; cE(P^;7D
import java.net.*; 9i+OYWUO
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public class SiteFileFetch extends Thread { byALM
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SiteInfoBean siteInfoBean = null; //文件信息Bean %eK=5Er jx
long[] nStartPos; //开始位置 Sg#$
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long[] nEndPos; //结束位置 x"/DCcZ
FileSplitterFetch[] fileSplitterFetch; //子线程对象 k:1p:&*m
long nFileLength; //文件长度 1<gY
boolean bFirst = true; //是否第一次取文件 @E Srj[
boolean bStop = false; //停止标志 aU&p7y4C@
File tmpFile; //文件下载的临时信息 3$<u3Zi6
DataOutputStream output; //输出到文件的输出流
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) SZVNu*G!H
public SiteFileFetch(SiteInfoBean bean) throws IOException yjcZTvjJ
{ u@ MUcW
siteInfoBean = bean; b$7p`Ay
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); eBUexxBY
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); )\nKr;4MH
if(tmpFile.exists ()) ['~E _z
{ HW|5'opF
bFirst = false; z;T_%?u
read_nPos(); XPJsnu
} V{#8+
else is?#wrV=K
{ FA5|`
nStartPos = new long[bean.getNSplitter()]; =|}_ASbzw
nEndPos = new long[bean.getNSplitter()]; R-2NJ0F7
} <V[Qs3uo(
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} QMO.Bnek
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public void run() R1sWhB99
{ > nHaMj
//获得文件长度 !TNp|U!
//分割文件 &TgS$c5k
//实例FileSplitterFetch q4y P\B
//启动FileSplitterFetch线程 *'?aXS -'r
//等待子线程返回 >:C0ZQUW
try{ $<NrJgQ
if(bFirst) 2Dc2uU@`r
{ _?VMSu
nFileLength = getFileSize(); g:dtfa/]
if(nFileLength == -1) 8Pb~`E/
{ -BV8,1
System.err.println("File Length is not known!"); v3p'*81;
} ?/@U#Qy
else if(nFileLength == -2) rXh*nC
{ r`dQ<U,
System.err.println("File is not access!"); U#
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} - uk}Fou
else u;
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{ 9~7s*3zI
for(int i=0;i<nStartPos.length;i++) 0|i3#G_~
{ pY~/<lzW
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 4D'AAr57
} )6!ji]c
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for(int i=0;i<nEndPos.length-1;i++) 5%r:hO @S
{ 7.mYzl-F(
nEndPos = nStartPos[i+1]; 9Sey&x
} If>bE!_BO
nEndPos[nEndPos.length-1] = nFileLength; )44c[Z
} @PL.7FM<v
} M)qb6aD0
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//启动子线程 f(Su
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; e 48N[p
for(int i=0;i<nStartPos.length;i++) R:+cumHr
{ Be$v%4
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), rv?4S`Z,x$
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 3<
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nStartPos,nEndPos,i); 1m~-q4D)V
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); W9D~:>^YP
fileSplitterFetch.start(); <5 )F9.$
} $-i(xnU/nl
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), drwD3jx0xv
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 6*&$ha}X
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", F
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nEndPos = " + nFileLength); 73p7]Uo
// fileSplitterFetch[nPos.length-1].start(); ''Y'ZsQ;
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//等待子线程结束 *)Us
//int count = 0; |Cm6RH$(
//是否结束while循环 o#K*-jOfiH
boolean breakWhile = false; \[9^,QP
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while(!bStop) vojXo|c
{ J?9n4
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write_nPos(); (Q?@LzCjy
Utility.sleep(500); y*#YIS56I
breakWhile = true; 7 1+
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for(int i=0;i<nStartPos.length;i++) mHyT1e
{ >bFrJz}
if(!fileSplitterFetch.bDownOver) kXroFLrY
{ L$z(&%Nx
breakWhile = false; A\w"!tNM|
break; h!mx/Hx
} ]3Y J a
} 5W!#,jz
if(breakWhile) &[z<p
break; WYN0,rv1:+
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//count++; 3GL,=q
//if(count>4) 3y%,f|ju
// siteStop(); LC,6hpmh
} Bra}HjHO
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System.err.println("文件下载结束!"); ()Q#@?c~
} %"Ia]0
catch(Exception e){e.printStackTrace ();} (M 2hK[
} X`20=x
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//获得文件长度 ~l8w]R3A
public long getFileSize() JT! Cb$!
{ ~p`[z~|
int nFileLength = -1; |ju+{+
try{ <Uy $b4h
URL url = new URL(siteInfoBean.getSSiteURL()); M%YxhuT0
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); eiQ42x@Z
httpConnection.setRequestProperty("User-Agent","NetFox"); IP
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int responseCode=httpConnection.getResponseCode(); m}(M{^\|
if(responseCode>=400) DkEf;P
{ 0|DyYu
processErrorCode(responseCode); fcTg/EXn
return -2; //-2 represent access is error &u!MI
} -asjBSo*D
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String sHeader; t)5.m}
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for(int i=1;;i++) =h70!) Z5
{ DYF(O-hJK
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); QM'|k6
//Utility.log(in.readLine()); \fsNI T/
sHeader=httpConnection.getHeaderFieldKey(i); rvacCwI
if(sHeader!=null) P(UY}oU
{ ;\(LovUy6
if(sHeader.equals("Content-Length")) CofTTYl
{ 3a[ LM!
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); dZY|6
break; rJ{k1H >
} Z,DSTP\|
} R=3|(R+kA
else +Ks 3
break; "rrw~
} vm7ag 7@O
} q|}O-A*wa
catch(IOException e){e.printStackTrace ();} <TTBIXV
catch(Exception e){e.printStackTrace ();} A34O(fE
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Utility.log(nFileLength); nsM.`s@V
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return nFileLength; !"ir}Y%
} H.;2o(vD
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//保存下载信息(文件指针位置) wRZFBf~
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private void write_nPos() 3 Q~0b+k
{ l cM
try{ 1gnLKf c
output = new DataOutputStream(new FileOutputStream(tmpFile)); }mo)OyIX
output.writeInt(nStartPos.length); dlA0&;}z
for(int i=0;i<nStartPos.length;i++) Xf{9rZ+
{ OnH3Ss$
// output.writeLong(nPos); )gD2wk(
output.writeLong(fileSplitterFetch.nStartPos); K_n
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output.writeLong(fileSplitterFetch.nEndPos); 9 I:3
} 3mHP=)
output.close(); lvRTy|%[
} j]U~ZAn,K
catch(IOException e){e.printStackTrace ();} wv`ar>qVL
catch(Exception e){e.printStackTrace ();} b%KcS&-6
} KG4zjQf
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//读取保存的下载信息(文件指针位置) 9f/l"
private void read_nPos() Z&4L///
{ ;<*USS6X
try{ III:jhh
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ">M&/}4
int nCount = input.readInt(); 3ZN\F
nStartPos = new long[nCount]; ]9~Il#
nEndPos = new long[nCount]; P+y XC^ ,
for(int i=0;i<nStartPos.length;i++) g{
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nStartPos = input.readLong(); a*t @k*d_
nEndPos = input.readLong(); r7#.DJnN.
} W56VA>ia
input.close(); >l #D9%
} "[rz*[o8I
catch(IOException e){e.printStackTrace ();} &grvlK
catch(Exception e){e.printStackTrace ();} E,dUO;
} #?`S+YN!q)
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private void processErrorCode(int nErrorCode) yeMe2Zx
{ `e`DSl D>
System.err.println("Error Code : " + nErrorCode); , hrv
} "Ec9.#U/
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//停止文件下载 orYZ<,u
public void siteStop() U<r!G;^`
{ S&.xgBR
bStop = true; mfF `K2R
for(int i=0;i<nStartPos.length;i++) XH(-anU"!P
fileSplitterFetch.splitterStop(); w ~"%&SNN
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} .S1MxZhbP
} ji\&?%(B
//负责部分文件的抓取 MIyT9",Pl
**FileSplitterFetch.java ,6#%+u}f
*/ WJ)4rQ$o
package NetFox; .LDp.#d9r1
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import java.io.*; .XkD2~;
import java.net.*; a\~118 !
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public class FileSplitterFetch extends Thread { ? HNuffk
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String sURL; //File URL !G6h~`[
long nStartPos; //File Snippet Start Position ,j9? 9Z7R
long nEndPos; //File Snippet End Position ._t1eb`m{
int nThreadID; //Thread's ID {-MjsBR
boolean bDownOver = false; //Downing is over fFoZ!H
boolean bStop = false; //Stop identical 19-V;F@;
FileAccessI fileAccessI = null; //File Access interface m>F:dI
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException j:>0XP
{ 4.uaWM)2
this.sURL = sURL; e2K9CE.O
this.nStartPos = nStart; &c