/* ? ^W1WEBm
**SiteFileFetch.java H2+b3y-1a]
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package NetFox; ;S '?l0
import java.io.*; .6xMLo,R
import java.net.*; m(*rMO>_
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public class SiteFileFetch extends Thread { ~$J(it-a
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SiteInfoBean siteInfoBean = null; //文件信息Bean Fxc_s/^=t
long[] nStartPos; //开始位置 _DH^ K9,9
long[] nEndPos; //结束位置 ');vc~C
FileSplitterFetch[] fileSplitterFetch; //子线程对象 _+'!l'`
long nFileLength; //文件长度 m|F1_Ggz
boolean bFirst = true; //是否第一次取文件
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boolean bStop = false; //停止标志 YWvD+
File tmpFile; //文件下载的临时信息 8B:y46
DataOutputStream output; //输出到文件的输出流 M/dgW`c
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ^'0N%`bY!
public SiteFileFetch(SiteInfoBean bean) throws IOException brs`R#e \
{ WFh.oe8
siteInfoBean = bean; &i(Ip'r
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); _p*8ke
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); [`t ;or
if(tmpFile.exists ()) w2'q9pB+
{ }#7rg_O]>
bFirst = false; !Yv_V]u=
read_nPos(); {;u,04OVK
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else Z)M
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nStartPos = new long[bean.getNSplitter()]; V<W;[#"
nEndPos = new long[bean.getNSplitter()]; H8FvI"J
} OyF=G^w
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} [
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public void run() =g9n =spAn
{ CTRUr"
//获得文件长度 G?'^"ae"Z
//分割文件 XGR2L
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//实例FileSplitterFetch $jg[6`L$
//启动FileSplitterFetch线程 _&hM6N
//等待子线程返回 f7~dn#<@
try{ QQ .?A(U7
if(bFirst) Q_0+N3
{ XNWtX-[^@
nFileLength = getFileSize(); 9 A ?{}c
if(nFileLength == -1) "Zgwe,#
{
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System.err.println("File Length is not known!"); x?{UWh%
} +ig%_QED[\
else if(nFileLength == -2) >] 'oN
{ S>~f.
System.err.println("File is not access!"); UpG DLb f^
} a31e.36g
else GHcx@||C?
{ ZyUcL_
for(int i=0;i<nStartPos.length;i++) = 'o3 <}
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); sX%n` L
} ju{Y6XJ)
for(int i=0;i<nEndPos.length-1;i++) [! $NTt_
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nEndPos = nStartPos[i+1]; Kq3c Kp4
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nEndPos[nEndPos.length-1] = nFileLength; ^el+ej/=
} PR.3EL
} R VatGa0
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//启动子线程 kP
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; W\~^*ny
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for(int i=0;i<nStartPos.length;i++) q,,
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), A9MM^jV8
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ?uq`| 1`
nStartPos,nEndPos,i); |:1{B1sqA
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); kcCCa@~v
fileSplitterFetch.start(); ^?VQ$o2
} EnM
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), A`Z/B[)
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 1|MRXK
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", l*1|B3#m!
nEndPos = " + nFileLength); 'I]XX==_
// fileSplitterFetch[nPos.length-1].start(); faQmkO
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//等待子线程结束 arYq$~U
//int count = 0;
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//是否结束while循环 a `R%\@1
boolean breakWhile = false; 7Z6=e6/\
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while(!bStop) DzAZv/h76
{ !T`oHs
write_nPos(); %!<Y
Utility.sleep(500); :o'x?]
breakWhile = true; dvB=Zk]m
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for(int i=0;i<nStartPos.length;i++) ))"gWO
{ }| DspO
if(!fileSplitterFetch.bDownOver) 'C[tPP
{ m{/7)2.
breakWhile = false; Hb)FeGsd).
break; Q\$3l'W
} ORExI.<`W
} ;k <dp7^
if(breakWhile) cM#rus?)+
break; K zWo}tT
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//count++; !jj`Ht)
//if(count>4) #EPC]jFk
// siteStop(); c[h~=0UtJ
} ]S6Gz/4aV+
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System.err.println("文件下载结束!"); A8)4nOXM
} 4>KF`?%4
catch(Exception e){e.printStackTrace ();} 76nH)^%l<
} '~[8>Q>
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//获得文件长度 [YDSS/
public long getFileSize() gEh/m.L7
{ ] ,|,/~
int nFileLength = -1; :`bC3Mr
try{ owAO&"C
URL url = new URL(siteInfoBean.getSSiteURL()); H[=\_X1o(
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); D-gH_ff<]9
httpConnection.setRequestProperty("User-Agent","NetFox"); 4#$#x=:
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int responseCode=httpConnection.getResponseCode(); =nEP:7~{
if(responseCode>=400) ^6s im 2
{ `Q@7,z=f
processErrorCode(responseCode); &.)=>2
return -2; //-2 represent access is error o@:"3s
} tB_le>rhl
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String sHeader; t>j_C{X1(
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for(int i=1;;i++) `^M]|7
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 0m@+ &X>w
//Utility.log(in.readLine()); =*\s`ox`
sHeader=httpConnection.getHeaderFieldKey(i); t~Q9}+
if(sHeader!=null) Bkcwl
{ D!j/a!MaKk
if(sHeader.equals("Content-Length")) ,.,8-In^
{ w~3X
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); xR+vu>f
break; cO?*(e1m=
} oi #B7
} s QDgNJbU
else ]S2rqKB
break; #CS>_qe.{
} ,KY;NbL-Jp
} T.bFB+'E|
catch(IOException e){e.printStackTrace ();} N ,~O+
catch(Exception e){e.printStackTrace ();} |$Yk)z3
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Utility.log(nFileLength); <8r"QJY/
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return nFileLength; M.}9)ho
}
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//保存下载信息(文件指针位置) YvY|\2^K
private void write_nPos() )nm+_U
{ L%/RD2LD
try{ w2LnY1A
output = new DataOutputStream(new FileOutputStream(tmpFile)); TOG:`FID
output.writeInt(nStartPos.length); 6H#:rM
for(int i=0;i<nStartPos.length;i++) Y\
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{ w{ja*F6
// output.writeLong(nPos); >S5J^c
output.writeLong(fileSplitterFetch.nStartPos); UP](1lAf
output.writeLong(fileSplitterFetch.nEndPos); |<W$rzM
} /T _M't@j
output.close(); 1?'4%>kp
} /~LE1^1&U
catch(IOException e){e.printStackTrace ();} ,np=m17
catch(Exception e){e.printStackTrace ();} Ww<Y]H$xZ<
} h.<f%&)F
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//读取保存的下载信息(文件指针位置) ]E9iaq6Z
private void read_nPos() 4$-R|@,|_
{ VDxm|7
try{ 54$^ldD
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ?P9aXwc
int nCount = input.readInt(); d9{lj(2P
nStartPos = new long[nCount]; f&-`+V}U
nEndPos = new long[nCount]; ((M,6Q}
for(int i=0;i<nStartPos.length;i++) yP"2.9\erH
{ 'FW?
nStartPos = input.readLong(); 1AJ6NBC&c
nEndPos = input.readLong(); [-(^>Y
} 6,t6~Uo/
input.close(); (\:Rnl
} 1/$PxQ
catch(IOException e){e.printStackTrace ();} IMM;LC%rD9
catch(Exception e){e.printStackTrace ();} xe@e#9N$
} poz_=,c
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private void processErrorCode(int nErrorCode) Tm"H9
{ I%d=c0>%
System.err.println("Error Code : " + nErrorCode); ~RR!~q
} }aWy#Oe
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