/* +pqM ^3t|y
**SiteFileFetch.java OuIv e>8
*/ #G3N(wV3
package NetFox; 6Gn4asoA
import java.io.*; > 7`&0?
import java.net.*; f"&Xr!b.h
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public class SiteFileFetch extends Thread { }1+%_|Y-E
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SiteInfoBean siteInfoBean = null; //文件信息Bean U=Bn>F}y\
long[] nStartPos; //开始位置 >qT 'z$
long[] nEndPos; //结束位置 klWYuStZ
FileSplitterFetch[] fileSplitterFetch; //子线程对象 +yt6(7V*
long nFileLength; //文件长度 ;_<)JqUh
boolean bFirst = true; //是否第一次取文件 JhR W[~
boolean bStop = false; //停止标志 rVAL|0;3
File tmpFile; //文件下载的临时信息 nv5u%B^
DataOutputStream output; //输出到文件的输出流 -+U/Lrt>8
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 8
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public SiteFileFetch(SiteInfoBean bean) throws IOException oUW<4l
{ u}H$-$jE
siteInfoBean = bean; 2pyt&'NJua
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); \+qOO65/+
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ;7G_f
if(tmpFile.exists ()) i+M*J#'
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bFirst = false; 4f1D*id*`#
read_nPos(); qJ[@:&:
} 9EF~l9`'U
else L~FTr
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nStartPos = new long[bean.getNSplitter()]; 1"K*._K
nEndPos = new long[bean.getNSplitter()]; rcbP$tvz
} w.kCBDL
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} 7S2C /f
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public void run() WBppKj_M
{ 5)lW
//获得文件长度 RSWcaATZN
//分割文件 fB#XhO
//实例FileSplitterFetch !jh%}JJ
//启动FileSplitterFetch线程 u39FN?<^
//等待子线程返回 "zV']A>4H
try{ ?=|kC*$/G
if(bFirst) F>Y9o-o2
{ /B HepD}
nFileLength = getFileSize(); Di??Q_$ak
if(nFileLength == -1) f?0s &Xo
{ k7 bl'zic
System.err.println("File Length is not known!"); lg/sMF>z\f
} `B#Z;R
else if(nFileLength == -2) -2NwF4VL
{ h$h]%y
System.err.println("File is not access!"); Ge}$rLu]0
} Ob&W_D^=N
else y' tRANxQ
{ LC'F<MpM
for(int i=0;i<nStartPos.length;i++) \K`jCsT
{ q6[}ydV
nStartPos = (long)(i*(nFileLength/nStartPos.length)); P79R~m`
} M4<+%EV}
for(int i=0;i<nEndPos.length-1;i++) Xm[Czd]%
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nEndPos = nStartPos[i+1]; .S vyj
} -Z?Ck!00
nEndPos[nEndPos.length-1] = nFileLength; F RH&B5w
} |>sv8/!
} 44C+h
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//启动子线程 H%.zXQ4}n
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; .98.G4J>
for(int i=0;i<nStartPos.length;i++) ul}'{|4
{ q,,j',8kq/
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), tyXl}$)y
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), dF2@q@\.+
nStartPos,nEndPos,i); t.z$j
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); <3#<I)#
fileSplitterFetch.start(); :,C%01bH|l
} utd:&q|}
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), +{&+L0DfH~
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); y\_wW E
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", tP]q4i
nEndPos = " + nFileLength); ^-L{/'[8M
// fileSplitterFetch[nPos.length-1].start(); ?N#[<kd
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//等待子线程结束 OWV/kz5'H
//int count = 0; +v1-.z
//是否结束while循环 Dm4B
boolean breakWhile = false; F^sw0 .b
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while(!bStop) s-5wbi.C
{ RO(iHR3cA
write_nPos(); :1BM=_WwI
Utility.sleep(500); Zi3T~:0p:
breakWhile = true; ^n71'MW
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for(int i=0;i<nStartPos.length;i++) :C}H y
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if(!fileSplitterFetch.bDownOver) _>Ln@
{ {jG.=}/Dk
breakWhile = false; <rMv0y+r
break; #`58F .
} "8_,tYAH
} GXEcpc08
if(breakWhile) 4@))OD^ x
break; 4f
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//count++; SauHFl8?
//if(count>4) zkG>u,B}
// siteStop(); ,]U[W
} GRQ_+K
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System.err.println("文件下载结束!"); 7%tR&F -u
} THr8o V5
catch(Exception e){e.printStackTrace ();} Dpj-{q7C
} ]F_r6 *<
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//获得文件长度 - XLo0
public long getFileSize() o]p#%B?mZ
{ pDmK
int nFileLength = -1; l<n5gfJ
try{ DOT=U
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URL url = new URL(siteInfoBean.getSSiteURL()); 59K}
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Zr9 d&|$
httpConnection.setRequestProperty("User-Agent","NetFox"); W1<