/* 1E Lzzn
**SiteFileFetch.java 'e-Nt&;
*/ Xu#\CYk
package NetFox; gF%lwq
import java.io.*; L1u
import java.net.*; Auhw(b>}TW
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public class SiteFileFetch extends Thread { qs6yEuh#
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SiteInfoBean siteInfoBean = null; //文件信息Bean <[xxCW(2
long[] nStartPos; //开始位置 |u)?h]>
long[] nEndPos; //结束位置 &Pt|
FileSplitterFetch[] fileSplitterFetch; //子线程对象 EWN$ILdD
long nFileLength; //文件长度 e ,zR
boolean bFirst = true; //是否第一次取文件 /:>f$k4~h
boolean bStop = false; //停止标志 bG+p
File tmpFile; //文件下载的临时信息 '#<?QE!d2
DataOutputStream output; //输出到文件的输出流 x]%e_
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ]sO})
public SiteFileFetch(SiteInfoBean bean) throws IOException rWbuoG+8
{ >]"5K<-1
siteInfoBean = bean; ~Dr/+h:^\
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); gcr,?rE<
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); zQxZR}'
if(tmpFile.exists ()) AO;`k]0e
{ ZZTPAmIr
bFirst = false; _,b%t1v
read_nPos(); 7dX1.}M<(
} %iIryv;
else u*[,W-R&
{ KtHh--j`
nStartPos = new long[bean.getNSplitter()]; D_O%[u}
nEndPos = new long[bean.getNSplitter()]; D0PP
} U;Hu:q*
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} /-4i"|
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public void run()
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{
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//获得文件长度 }.gDaxj
//分割文件
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//实例FileSplitterFetch ezlp~z"_k
//启动FileSplitterFetch线程 :RHNV
//等待子线程返回 }*$-rieg
try{ [?W3XUJ,Y
if(bFirst) .x6*9z#q
{ xpFu$2T6P.
nFileLength = getFileSize(); -'{ioHt&X/
if(nFileLength == -1) ]V]~I.
{ PK3)M'[
System.err.println("File Length is not known!"); fJOU1%
} )rhKWg
else if(nFileLength == -2) gU>Y
{ -+|0LXo
System.err.println("File is not access!"); o&*1Mx<+
} OdRXNk:k-j
else 3-32q)8
{ rf;R"Uc
for(int i=0;i<nStartPos.length;i++) |Uy hH^
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); -sO EL{
} /c/!13|
for(int i=0;i<nEndPos.length-1;i++) MnKEZ: 2
{ nUmA
nEndPos = nStartPos[i+1]; ErB6fl
} @[zPN[z.
nEndPos[nEndPos.length-1] = nFileLength; /RmLV
} fLc<}DF
} bLu6|YB
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//启动子线程 G7%Nwe~Y
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; y+Q!4A
for(int i=0;i<nStartPos.length;i++) p`{<q
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), k6[t$|lMy
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), l:Ci'=
nStartPos,nEndPos,i); TKoO\\
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); N
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fileSplitterFetch.start(); { +
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} 3dadeu^{A
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,PRM(n -
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); =h&DW5QC
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", f`WmRx]K
nEndPos = " + nFileLength); pl fz)x3
// fileSplitterFetch[nPos.length-1].start(); X~GZI*P
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//等待子线程结束 hpWAQ#%oHm
//int count = 0; ]N1$ioC#
//是否结束while循环 qK|r+}g|&
boolean breakWhile = false; A!iH g__/t
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while(!bStop) BHZGQm
{ s}|IRDpp
write_nPos(); o>U%3-+T^J
Utility.sleep(500); w^R5/#F_r
breakWhile = true; =*Wl;PI'
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for(int i=0;i<nStartPos.length;i++) UfcM2OmbK
{ U0jq.]P
if(!fileSplitterFetch.bDownOver) &??(EA3
{ 5Odi\SJ&
breakWhile = false; oH6(Lq'q
break; n6Q 3X
} lt,x(2
} s)/i_Oe$\
if(breakWhile) &lI.N~Ao
break; n)`*{uv$
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//count++; h3@mN\=h'
//if(count>4) n=rPFpRLF
// siteStop(); T^A:pL1
} /"iYEr%_
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System.err.println("文件下载结束!"); .V/TVz!b
} ^o?.Rph|i]
catch(Exception e){e.printStackTrace ();} 8{?Oi'-|0
} D*D83z OzN
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//获得文件长度 Zls4@/\Q
public long getFileSize() <PV @JJ"
{ 3%<ia$
int nFileLength = -1; BvX!n"QIb
try{ +hXph
URL url = new URL(siteInfoBean.getSSiteURL()); B>?. Nr
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Z8'uZ#=Yw
httpConnection.setRequestProperty("User-Agent","NetFox"); m"U\;Mw?
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int responseCode=httpConnection.getResponseCode(); |_O; U=2
if(responseCode>=400) 1/le%}mK
{ mi97$Cr2
processErrorCode(responseCode); ,dh*GJ{5
return -2; //-2 represent access is error PjsQ+5[>
} !(SaE'
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String sHeader; AFMAgf{bD
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for(int i=1;;i++) hrcR"OZ~X
{ )QI]b4[
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); d>vGx
//Utility.log(in.readLine()); H,H'bd/
sHeader=httpConnection.getHeaderFieldKey(i); Q`19YX
if(sHeader!=null) eKStt|M'
{ NaVZ)
if(sHeader.equals("Content-Length")) L}:u9$w
{ 6x[gg !;85
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); H3a}`3}U
break; {Ja#pt
} d(v )SS
} %X[|7D-
else _Dk;U*2
break; zD) 2af
} b,318R8+G
} M}%0=VCY7
catch(IOException e){e.printStackTrace ();} 6"A|)fz
catch(Exception e){e.printStackTrace ();} 1YM04*H
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Utility.log(nFileLength); YToRG7X#
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return nFileLength; q~l&EH0
} .}CPZ3y
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//保存下载信息(文件指针位置) 1Z`<HW"
private void write_nPos() ~Dkje
{ \".3x
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try{ a_x|PbD
output = new DataOutputStream(new FileOutputStream(tmpFile)); *y N,e.t
output.writeInt(nStartPos.length); 7 v`Y*D
for(int i=0;i<nStartPos.length;i++) 9*,5R,#
{ ld2\/9+n
// output.writeLong(nPos); 2I>C A[qp
output.writeLong(fileSplitterFetch.nStartPos); %W`pTvF
output.writeLong(fileSplitterFetch.nEndPos); DUW;G9LP$-
} `^w5/v#
output.close(); |5![k<o#
} g7d) YUc
catch(IOException e){e.printStackTrace ();} $> #PhOC
catch(Exception e){e.printStackTrace ();} ^QFjBQ-Hai
} t3bDi/m
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//读取保存的下载信息(文件指针位置) 7i/?+|
private void read_nPos() V?5_J%
{ //6m2a
try{ y4envjl0
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); r}vI#;&
int nCount = input.readInt(); .g4bV5ma3
nStartPos = new long[nCount]; f#^%\K:YYR
nEndPos = new long[nCount]; M{z+=c&w
for(int i=0;i<nStartPos.length;i++) *M KVm)Iv
{ YR[Ii?
nStartPos = input.readLong(); ,L_p"A
nEndPos = input.readLong(); q+LjWZ+O
} P7@qvg
input.close(); E[_Z%zd^
} qe\j$Cjy
catch(IOException e){e.printStackTrace ();} MK=:L
catch(Exception e){e.printStackTrace ();} 1S_KX.
} lYy0
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private void processErrorCode(int nErrorCode) 0>.'w\,87B
{ )EcF[aO
System.err.println("Error Code : " + nErrorCode); $'[(
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} kv5D=0r
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//停止文件下载 ,
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public void siteStop() [& hdyLt
{ TJO|{Lxm
bStop = true; Gzm[4|nO^
for(int i=0;i<nStartPos.length;i++) v_G4:tY
fileSplitterFetch.splitterStop(); gw5CU)r4$
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} qLPI^g,
} } 10Dvt>+
//负责部分文件的抓取 wePMBL1P*
**FileSplitterFetch.java w|$;$a7)
*/ JXvHsCd?
package NetFox; &=s{ +0
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import java.io.*; s]=kD
import java.net.*; r9u*c
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public class FileSplitterFetch extends Thread { d5u,x.R
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String sURL; //File URL jp&