/* }|Q\@3&
**SiteFileFetch.java 3n7>qZ.d
*/ C<a&]dN/
package NetFox; U`~L}w"
import java.io.*; ,/p+#|>C=
import java.net.*; h#UPU7;
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public class SiteFileFetch extends Thread { SbUac<
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SiteInfoBean siteInfoBean = null; //文件信息Bean <bW~!lv
long[] nStartPos; //开始位置 U+B{\38
long[] nEndPos; //结束位置 F7C+uGTs
FileSplitterFetch[] fileSplitterFetch; //子线程对象 cy6YajOk7
long nFileLength; //文件长度 ~5|R`%
boolean bFirst = true; //是否第一次取文件 mvpcRe
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boolean bStop = false; //停止标志 M<l<n$rYS
File tmpFile; //文件下载的临时信息 )g8Kicox5
DataOutputStream output; //输出到文件的输出流 %F150$(D
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) e@O]c"
public SiteFileFetch(SiteInfoBean bean) throws IOException `j'1V1
{ 9UteD@*
siteInfoBean = bean; Xajt][
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); R>Ox(MG
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ,\+N}F^
if(tmpFile.exists ()) XkUwO ]
{ \ 6taC
bFirst = false; %b_0l<+
read_nPos(); G
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} TEer>gD:v
else Zr6.Nw
{ j7I?K
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nStartPos = new long[bean.getNSplitter()]; QaE!?R
nEndPos = new long[bean.getNSplitter()]; hd/'>]
} ~S~+'V,d
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} 4,YL15.
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public void run() @+Nf@LJ
{ C
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//获得文件长度 pIpdVKen
//分割文件 lOb(XH9
//实例FileSplitterFetch -~J5aG[@~>
//启动FileSplitterFetch线程 V4Qy^nn1
//等待子线程返回 /`#JM
try{ u^'X>n)oL#
if(bFirst) rN .8-
{ `25<;@
nFileLength = getFileSize(); ;U a48pSv
if(nFileLength == -1) q!><:"#[G
{ k
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System.err.println("File Length is not known!"); Ue`Y>T7+!
} 'F/uD1;
else if(nFileLength == -2) +_*iF5\
{ %ib7)8Ki0
System.err.println("File is not access!"); vq3:N'
} f4 +P2j
else 6N Ogi
{ e6 <9`Xg
for(int i=0;i<nStartPos.length;i++)
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{ >@a7Zzl0H
nStartPos = (long)(i*(nFileLength/nStartPos.length)); qv:DpK
} k%sxA
for(int i=0;i<nEndPos.length-1;i++) 2zv:j7
{ c;a<nTLn
nEndPos = nStartPos[i+1]; ^,f^YL;
} d mTZEO
nEndPos[nEndPos.length-1] = nFileLength; F]<2nb7
} %SCt_9u
} r1=j$G
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//启动子线程 -V"W
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; T>hm\ !
for(int i=0;i<nStartPos.length;i++) +.rOqkxJ
{ W|sU[dxZ
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), {z;K0
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), NP4u/C<
nStartPos,nEndPos,i); Gv#bd05X
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); oxI?7dy5
fileSplitterFetch.start(); x wwL
} VH+3o?nrT
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), X(#8EY}X
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 3U!=R-
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 1IT(5Mleb
nEndPos = " + nFileLength); xBf->o S?
// fileSplitterFetch[nPos.length-1].start(); <{YzmN\Z
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@FF{lK?[
//等待子线程结束 0$=U\[og
//int count = 0; 'w<^4/L Q
//是否结束while循环 FGm!|iI
boolean breakWhile = false; 0~[M[T\
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while(!bStop) xwHE,ykE
{ XJwgh y?(
write_nPos(); t56PzT'M
Utility.sleep(500); 7A$mZPKh
breakWhile = true; 2#/sIu-L
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for(int i=0;i<nStartPos.length;i++) &5B/>ag1!
{ @LS%uqs
if(!fileSplitterFetch.bDownOver) j+gh*\:q
{ 7Xh @%[
breakWhile = false; e5;YY
break; x'6i9]+r
} $GhL-sqm
} &
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if(breakWhile) KilN`?EJ
break; jzWgyI1b
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//count++; nT}i&t!q8@
//if(count>4) _c:th{*
// siteStop(); P"@^BQ4
} #8BI`.t)j
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System.err.println("文件下载结束!"); ,u-9e4
} 1C*mR%Q
catch(Exception e){e.printStackTrace ();} 4V
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} 2$o\`^dy
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//获得文件长度 4((p?jbC
public long getFileSize() (b"q(:5oX
{ 0Xn,q]@Z
int nFileLength = -1; sP=^5K`g
try{ N{M25ucAHl
URL url = new URL(siteInfoBean.getSSiteURL()); h^14/L=|
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ^\yz`b(A0
httpConnection.setRequestProperty("User-Agent","NetFox"); 0|=y#`;,Z
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int responseCode=httpConnection.getResponseCode(); E7B?G3|z3
if(responseCode>=400) =fB"T+
{ N+pCC
processErrorCode(responseCode); yi(IIW
return -2; //-2 represent access is error XCXX(8To0=
} @s,kx.S
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String sHeader; 5rQu^6&
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for(int i=1;;i++) W}%[i+
{ :j/sTO=
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); |=:hUp Jp
//Utility.log(in.readLine());
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sHeader=httpConnection.getHeaderFieldKey(i); )?6%d
if(sHeader!=null) f9d{{u
{ rD !GEU
if(sHeader.equals("Content-Length")) Qj|tD+<
{ O]!o|w(
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); t2m7Yh5B
break; -q?,
} .5 {<