/* &.?'i1!
**SiteFileFetch.java ?5
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*/ `W*U4?M
package NetFox; 9q[oa5INd
import java.io.*; Dm<A
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import java.net.*; kPLxEwl
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public class SiteFileFetch extends Thread { ]?[fsdAQW
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SiteInfoBean siteInfoBean = null; //文件信息Bean s-T\r"d=j
long[] nStartPos; //开始位置 0:Ol7
long[] nEndPos; //结束位置 )P|),S,;Z
FileSplitterFetch[] fileSplitterFetch; //子线程对象 "LTad`]<Ro
long nFileLength; //文件长度 A~t
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boolean bFirst = true; //是否第一次取文件 BR yl4
boolean bStop = false; //停止标志 }U"&8%PZr
File tmpFile; //文件下载的临时信息 W:L
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DataOutputStream output; //输出到文件的输出流 WI-1)1t
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) #4 pB@_
public SiteFileFetch(SiteInfoBean bean) throws IOException hQDXlFHT
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siteInfoBean = bean; U\*J9
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); AkQ~k0i}b
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); !d0kV,F:
if(tmpFile.exists ()) 7O-x<P;
{ H~1jY4E
bFirst = false; w&T9;_/
read_nPos(); SNI)9k(T{
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else 5]Y?m'
{ }S<2A7)el
nStartPos = new long[bean.getNSplitter()]; kL"2=7m;
nEndPos = new long[bean.getNSplitter()]; YteO6A;
} 4@#
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} %M|hA#04vZ
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public void run() 0^K">
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//获得文件长度 b2&0Hx
//分割文件 vnZC,J `
//实例FileSplitterFetch RdRp.pb8
//启动FileSplitterFetch线程 [:SWi1cK2
//等待子线程返回 <l E<f+
try{ ]|PiF+
if(bFirst) _^%,x
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nFileLength = getFileSize(); N64dO[op
if(nFileLength == -1) Cd}<a?m,
{ VQ9/Gxdeo
System.err.println("File Length is not known!"); )
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} Fyatd
else if(nFileLength == -2) sN01rtB(UT
{ 6zuTQ^pz
System.err.println("File is not access!"); ou{2@"
} %^1V4
else D7Q$R:6|
{ [j/9neaye
for(int i=0;i<nStartPos.length;i++) N~zdWnSZ@G
{ KF!Yf\
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Od,qbU4O
} fSvM(3Y<Qh
for(int i=0;i<nEndPos.length-1;i++) _5Ct]vy
{ R)s:rJQ=p
nEndPos = nStartPos[i+1]; )cMh0SGcM1
} jLHkOk5{:
nEndPos[nEndPos.length-1] = nFileLength; S k\K4
} Ls+2Zbh
} Iom'Y@x
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//启动子线程 Gm^U;u}=f
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; q ,]L$
for(int i=0;i<nStartPos.length;i++) Zw
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{ U$D65B4=
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), N]=q|D
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 8\A#CQ5b
nStartPos,nEndPos,i); ^KT Y?
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); scz&h#0V
fileSplitterFetch.start(); XW)lDiJl
} !Pfr,a
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Vd+T$uC
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); C{xaENp
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", w;:*P
nEndPos = " + nFileLength); }-2 2XYh
// fileSplitterFetch[nPos.length-1].start(); i#Bf"W{F
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//等待子线程结束 A&Usddcp
//int count = 0; ~/iKh11
//是否结束while循环 9`X\6s
boolean breakWhile = false; hT&Y#fh
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while(!bStop) bUdLs.:
{ Nkth>7*
write_nPos(); W/bQd)Jvk
Utility.sleep(500); Ee%%d
breakWhile = true; Q6!zZ))~
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for(int i=0;i<nStartPos.length;i++) u?<%q!
{ yfjWbW
if(!fileSplitterFetch.bDownOver) Z4w!p?Wqa
{ 6@F9G4<Z
breakWhile = false; sW'AjI
break; 17"uf.G
} +`3)o PV)
} ' ;FnIZ
if(breakWhile) Ma']?Rb`
break; E`usknf>l
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//count++; =M[bnq*\
//if(count>4)
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// siteStop(); jB Z&Ad@e
} Q}K"24`=
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System.err.println("文件下载结束!"); 4ber!rJM
} *:LK8U
catch(Exception e){e.printStackTrace ();} x$.^"l-vX
} L;NvcUFn
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//获得文件长度 ;yLu R
public long getFileSize() g._]8{K
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int nFileLength = -1; *-=(Q`3
try{ bL+_j}{:N
URL url = new URL(siteInfoBean.getSSiteURL()); f<fXsSv(
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); }1c|gQ
httpConnection.setRequestProperty("User-Agent","NetFox"); PI:4m%[
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int responseCode=httpConnection.getResponseCode(); 4I
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if(responseCode>=400) t?-n*9,#S
{ BB!THj69a6
processErrorCode(responseCode); j<99FW"@e
return -2; //-2 represent access is error P%:wAYz1^O
} ~"&|W'he[
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String sHeader; r?lf($D*
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for(int i=1;;i++) y^,1a[U.
{ R'bTN|Cq
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); +\c5]`
//Utility.log(in.readLine()); ^T;*M_
sHeader=httpConnection.getHeaderFieldKey(i); :bu/^mW[
if(sHeader!=null) G%AbC"
{ \378rQU
if(sHeader.equals("Content-Length")) 0w\zLU
{ 7Oa#c<2]
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Pg0x/X{t
break; mzaWST]
} XSe=sHEI
} 5T_n %vz
else 7$vYo
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break; \FbvHr,
} mPtZO*Fc
} EyD=q! ZVZ
catch(IOException e){e.printStackTrace ();} q77;ZPfs8
catch(Exception e){e.printStackTrace ();} /ivJsPH
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Utility.log(nFileLength); 8>2.UrC
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return nFileLength; 3s,g*
} 7a=gH2]&
*/)c?)"
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//保存下载信息(文件指针位置) @; zl
private void write_nPos() w;[NH/A^a
{ @Q
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try{ yYIf5S`V]
output = new DataOutputStream(new FileOutputStream(tmpFile)); zU kgG61
output.writeInt(nStartPos.length); dUeN*Nq&(,
for(int i=0;i<nStartPos.length;i++) BOb">6C
{ KQaxvU)L
// output.writeLong(nPos); @w#-aGJO
output.writeLong(fileSplitterFetch.nStartPos); q1$N>;&
output.writeLong(fileSplitterFetch.nEndPos); p*R;hU
} }{K)
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output.close(); W7R<