/* MnBHm!]&
**SiteFileFetch.java m_C#fR /I
*/ xWxgv;Ah
package NetFox; Rl[SqmnI)@
import java.io.*; kR]AW60OE
import java.net.*; 2=`}:&0l
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public class SiteFileFetch extends Thread { Dwbt^{N^
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SiteInfoBean siteInfoBean = null; //文件信息Bean #p7_\+&5s
long[] nStartPos; //开始位置 c-`izn]
long[] nEndPos; //结束位置 |TQa=
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Rwe!xY^d8
long nFileLength; //文件长度 w@i;<LY.
boolean bFirst = true; //是否第一次取文件 \o<&s{6L
boolean bStop = false; //停止标志 ?O.'_YS
File tmpFile; //文件下载的临时信息 8umW>
DataOutputStream output; //输出到文件的输出流 (RafidiH
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Q4B(NYEu(
public SiteFileFetch(SiteInfoBean bean) throws IOException H|I.h{:
{ n<3{QqF
siteInfoBean = bean; DP08$Iq
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); >goG\y
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 9ohO-t$XkY
if(tmpFile.exists ()) ot;
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{ SS7C|*-Zd
bFirst = false; $m[*)0/
read_nPos(); 5-.{RU=
} U`kO<ztk
else gI{56Z
{ Ur,{ZGm
nStartPos = new long[bean.getNSplitter()]; "VI2--%v3
nEndPos = new long[bean.getNSplitter()]; r[4dGt
} ,nGZ(EBD
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} .&;:X )
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public void run() ZL+46fj
{ G4{TJ,~
//获得文件长度 !HSX:qAP$
//分割文件 CW'<Nh
//实例FileSplitterFetch 4R28S]Gb
//启动FileSplitterFetch线程 B/gI~e0
//等待子线程返回 :r+F95e
try{ J 7]LMw7
if(bFirst) >e^8fpgSo
{ r`A|2(h5B
nFileLength = getFileSize(); 4\iy{1{E,C
if(nFileLength == -1) a
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{ O_^
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System.err.println("File Length is not known!"); ^)S<Ha
} @i=_y+|d_
else if(nFileLength == -2) uE^5o\To
{ oRQ(l I>
System.err.println("File is not access!"); jFGY`9Zw0
} ^y2}C$1V
else _GsHT\
{ tW=oAy
for(int i=0;i<nStartPos.length;i++) t&nK5p95(
{ b0h >q $b
nStartPos = (long)(i*(nFileLength/nStartPos.length)); `V=F>s$W
} R:Tv'I1-L
for(int i=0;i<nEndPos.length-1;i++) R0bWI`$Z
{ ^9`~-w
nEndPos = nStartPos[i+1]; }-%:!*bLj
} i?IV"*Ob1N
nEndPos[nEndPos.length-1] = nFileLength; mL3 Q
} f1X]zk(=W
} U~_G *0
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//启动子线程 (&xIBF_6
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; tN-B`d1
for(int i=0;i<nStartPos.length;i++) &U{"dJ r
{ jGFDj"Y
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ?jHu,
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), *(j-jbA
nStartPos,nEndPos,i); "J*LR
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 7YQ689"J6B
fileSplitterFetch.start(); 8rM1kOCf
} @h)X3X
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), j\TS:F^z
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Xf*}V+&WN
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", *@[N~:z/
nEndPos = " + nFileLength); p0@l581
// fileSplitterFetch[nPos.length-1].start(); {^6<Ohe4j
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//等待子线程结束 {z*`*
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//int count = 0; 8Lh[>|~=
//是否结束while循环 -< }#ImTN
boolean breakWhile = false; jU_#-<'r
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while(!bStop) [A46WF>L
{ [K#pU:lTH
write_nPos(); @2R+?2 j
Utility.sleep(500); 4KZ)`KPE
breakWhile = true; GL'zNQP-
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for(int i=0;i<nStartPos.length;i++) (qg~l@rf
{ u%rB]a$/
if(!fileSplitterFetch.bDownOver) S<nbNSu6+
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breakWhile = false; X:d[eAu0
break; P(Z\y^S
} Ops""#Zi
} @W\H%VR
if(breakWhile) &T[BS;
break; $Y<(~E$FX
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//count++; &ZAc3@l[c
//if(count>4) "MU)8$d
// siteStop(); zR_yxs'
} O`FuXB(t
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System.err.println("文件下载结束!"); SCKpW#2dP{
} hsHtLH+@
catch(Exception e){e.printStackTrace ();} NK|m7(
} *tL1t\jY
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//获得文件长度 o>oZh1/\T,
public long getFileSize() .aE%z/@s=
{ 2~q(?wY
int nFileLength = -1; R4Si{J*O
try{ O>sE~~g]?
URL url = new URL(siteInfoBean.getSSiteURL()); Ll'!aar,
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); _~_6qTv-d
httpConnection.setRequestProperty("User-Agent","NetFox"); WDQw)EUl&
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int responseCode=httpConnection.getResponseCode(); n9r3CLb[
if(responseCode>=400) wVY;)1?
{ "U%jG`q
processErrorCode(responseCode); 7T@"2WYat
return -2; //-2 represent access is error ~AG."<}
} u@$pOLI
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String sHeader; NZ?| #53
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for(int i=1;;i++) %QKRl5RM-
{ "f3KE=cUm
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ?ne!LDlE|
//Utility.log(in.readLine()); wO3K2I]>0
sHeader=httpConnection.getHeaderFieldKey(i); /e4#DH
if(sHeader!=null) &4-rDR,
{ 7z4u?>pne*
if(sHeader.equals("Content-Length")) 6N]V.;0_5
{ 1[r;
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); {qkd63X
break; o= N_0.
} ,Jh('r7
} b=j]tb,
else O.~@V(7ah
break; d*TpHLm
} SK_i 3?
} +i.b&PF'H
catch(IOException e){e.printStackTrace ();} >!|(n@
catch(Exception e){e.printStackTrace ();} Hxzdxwz%$
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Utility.log(nFileLength); uSi/|
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return nFileLength; yNu%D$6u7
} J>Uzd,
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//保存下载信息(文件指针位置) x#s=eeP1
private void write_nPos() VIjsz42C
{ 58 Rmq/6s
try{ W9ewj:4\0
output = new DataOutputStream(new FileOutputStream(tmpFile)); sCF7K=a
output.writeInt(nStartPos.length); xr\wOQ*`
for(int i=0;i<nStartPos.length;i++) @YfCS8
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{ Cq, hzi-
// output.writeLong(nPos); >4} 2~;
output.writeLong(fileSplitterFetch.nStartPos); WxFrqUz
output.writeLong(fileSplitterFetch.nEndPos); Fl^}tC
} Y8yRQz u
output.close(); !.ot&EbE
} 3e.v'ccK&
catch(IOException e){e.printStackTrace ();} bs_"Nn?
catch(Exception e){e.printStackTrace ();} dQ4K^u
} ^"d!(npw
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//读取保存的下载信息(文件指针位置) !B_?_ a
private void read_nPos() <