/* \% &QIe;:k
**SiteFileFetch.java &of%;>$>M
*/ 1>bkVA
package NetFox; W>dS@;E
import java.io.*; )8ctNpQt
import java.net.*; b'Z#RIb
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public class SiteFileFetch extends Thread { P\iw[m7O
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SiteInfoBean siteInfoBean = null; //文件信息Bean =Z2U
long[] nStartPos; //开始位置 en!cu_]t
long[] nEndPos; //结束位置 6 )0$UW
FileSplitterFetch[] fileSplitterFetch; //子线程对象 WXNJc
long nFileLength; //文件长度 IyOujdKa
boolean bFirst = true; //是否第一次取文件 gsc/IUk
boolean bStop = false; //停止标志 gTW(2?xYf
File tmpFile; //文件下载的临时信息 x_v pds
DataOutputStream output; //输出到文件的输出流 [HtU-8:
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) #1z}~1-
public SiteFileFetch(SiteInfoBean bean) throws IOException S#!PDg
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siteInfoBean = bean; +;`Cm.Iu
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Mz40([{
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); D!J
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if(tmpFile.exists ()) [rU8%
{
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bFirst = false; /,2Em>
read_nPos(); iK(n'X5i
} Mh>^~;
else M=26@ n
{ ,":ADO-
nStartPos = new long[bean.getNSplitter()]; RJnRbaC
nEndPos = new long[bean.getNSplitter()]; 2aW&d=!ZV
} S`K8e^]
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} >8 t3a-/
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public void run() -}9ZZ#K
{ "J, ErnM
//获得文件长度 1
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//分割文件 Nk86Y2h
//实例FileSplitterFetch _(<[!c!@0
//启动FileSplitterFetch线程 xlqRW"
//等待子线程返回 u` `FD
try{ #]:yCiA
if(bFirst) CO0Nq/@
{ :v
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nFileLength = getFileSize(); 7>wSbAR<
if(nFileLength == -1) KxGK`'E'r
{ n_)d4d zl
System.err.println("File Length is not known!");
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} _yJd@
else if(nFileLength == -2) @/`b:sv&*
{ <{9E.6G`n
System.err.println("File is not access!"); [US.n+G6
} fwf]1@#
else ;l &mA1+
{ OY51~#BF
for(int i=0;i<nStartPos.length;i++) 'd|_ i6:y&
{ jv5p_v4%O
nStartPos = (long)(i*(nFileLength/nStartPos.length)); u(\b1h n
} #8%Lc3n
for(int i=0;i<nEndPos.length-1;i++) 5bH@R@3 m
{ Yr,e7da
nEndPos = nStartPos[i+1]; pI( OI>~3
} UKZsq5Q
nEndPos[nEndPos.length-1] = nFileLength; G;yf]xFd
}
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} 4@4$kro
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//启动子线程 \6T&gX
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; k129)79
for(int i=0;i<nStartPos.length;i++) TF^Rh4
{ $eCxpb..
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), |/Ggsfmby
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 8)\ ?6C
nStartPos,nEndPos,i); 0AZ Vc
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Pn[-{nz
fileSplitterFetch.start(); }~:`9PV)Z%
} [as\>@o
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Z0`Bn5
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); dli?/U@hO
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", N41)?-7F
nEndPos = " + nFileLength); i
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// fileSplitterFetch[nPos.length-1].start(); f0~<qT?:n
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//等待子线程结束 5*/~) wN\U
//int count = 0; 2TXrVaM
//是否结束while循环 %|*tL7
boolean breakWhile = false; +g(>]!swb
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while(!bStop) AU -,
{ V`fp%7W
write_nPos(); v,I4ozDx
Utility.sleep(500); _ho9}7 >
breakWhile = true; $nUhM|It
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for(int i=0;i<nStartPos.length;i++) <wfPbzs-V
{ <~@}r\
if(!fileSplitterFetch.bDownOver) 2Nrb}LH
{ 1xP*
breakWhile = false; 3q:U0&F
break; !'8.qs
} (HbA?Aja
} 9AF%Y:y
if(breakWhile) S~()A*5
break; wXZ"}uT<}
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//count++; ?l/VCEZP
//if(count>4) lHerEv<ja
// siteStop(); $ @g\wz
} He vZ}.
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System.err.println("文件下载结束!"); v7gs
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} /*Iq,"kGz
catch(Exception e){e.printStackTrace ();} c|RTP
} $ha,DlN
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//获得文件长度 h*d1G9%Q1
public long getFileSize() ~ES6Qw`Oe
{ ywQ[>itMa
int nFileLength = -1; S9RH&/^H
try{ GB,f'Afl
URL url = new URL(siteInfoBean.getSSiteURL()); ~+|Vzm|S}
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); O/Cwm;&t
httpConnection.setRequestProperty("User-Agent","NetFox"); |`eHUtjH
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int responseCode=httpConnection.getResponseCode(); ^x2zMB\t
if(responseCode>=400) NH9"89]E
{ " b3-'/&
processErrorCode(responseCode); WN#S%G:Q)
return -2; //-2 represent access is error $0 ]xeD0X
} 8uAA6h+
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String sHeader; FxU a5n
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for(int i=1;;i++) jKr\mb
{ rf?%- X(V
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); T,@s.v
//Utility.log(in.readLine()); *I]/ [d
sHeader=httpConnection.getHeaderFieldKey(i); Xna58KF/
if(sHeader!=null) g$f+X~Q
{ ['m7Wry
if(sHeader.equals("Content-Length")) sU Er?TZ
{ =$mPReA3v
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); \MqOHM.[
break; Jlp nR#@
} g'cLc5\
} %\"<lyD
else Ua hsX
break; lT^/8Z<g
} -.xiq0
} H46N!{<;@
catch(IOException e){e.printStackTrace ();} 6 &Lr/J76
catch(Exception e){e.printStackTrace ();} Ef @
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Utility.log(nFileLength); *'w?j)}A9g
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return nFileLength; |PtfG2Ty?
} .jUM';
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//保存下载信息(文件指针位置) }#r awVe=
private void write_nPos() @yM$Et5
{ w**~k]In
try{ p0rmcP1Ln
output = new DataOutputStream(new FileOutputStream(tmpFile)); "7q!u,u
output.writeInt(nStartPos.length); +pPfvE`
for(int i=0;i<nStartPos.length;i++) \VpN:RI
{ {8I,uQO
// output.writeLong(nPos); iD*21c<