/* ",&^ f
**SiteFileFetch.java $wnK"k%G
*/ haTmfh_|
package NetFox; #GoZH?MAF
import java.io.*; 7S^ba
import java.net.*; wg-qq4Q\
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public class SiteFileFetch extends Thread { ')G,+d^
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SiteInfoBean siteInfoBean = null; //文件信息Bean 04o>POR
long[] nStartPos; //开始位置 w8(8n&5
long[] nEndPos; //结束位置 jg)+]r/hS
FileSplitterFetch[] fileSplitterFetch; //子线程对象 3:H[S_q
long nFileLength; //文件长度 Mk=M)d`
boolean bFirst = true; //是否第一次取文件 r1pj-
boolean bStop = false; //停止标志 {Sl#z}@s
File tmpFile; //文件下载的临时信息 w^BF.Nu
DataOutputStream output; //输出到文件的输出流 ML:Zm~A1U
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ]{.iv_I
public SiteFileFetch(SiteInfoBean bean) throws IOException kD}w5 U
{ ZwzN=03T
siteInfoBean = bean; u4eA++eT
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); *P:!lO\|
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); /w|!SZB
if(tmpFile.exists ()) 5)@UpcjUA
{ q7#4e?1
bFirst = false; o54/r#~fi
read_nPos(); Yee%
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} )c6t`SBwi
else @XJzM]*w&
{ 0pfgE=9
nStartPos = new long[bean.getNSplitter()]; z*oeho
nEndPos = new long[bean.getNSplitter()]; Xh5&J9pw
} EOj.Jrs~
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} (=\))t8J
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public void run() -f&m4J} E
{ #TUuk
//获得文件长度 kq$0~lNI$
//分割文件 )/:j$aq
//实例FileSplitterFetch l b9O
//启动FileSplitterFetch线程 > r
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//等待子线程返回 |XrGf2P9u
try{ ow<z @^ 3'
if(bFirst) q2{Aq[
{ $wm.,Vb
nFileLength = getFileSize(); ##QKXSD
if(nFileLength == -1) .EfGL_
{ /:=,mWoO
System.err.println("File Length is not known!"); .wpp)M.w;H
} .Ce0yAl~
else if(nFileLength == -2) y$,j'B:;4m
{ =".sCV9"N
System.err.println("File is not access!"); qx'F9I
} #;(Q \
else F'^y?UP[
{ `Q1;Y
for(int i=0;i<nStartPos.length;i++) h
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{ ^[=1J
nStartPos = (long)(i*(nFileLength/nStartPos.length)); s
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} LLV1W0VO=P
for(int i=0;i<nEndPos.length-1;i++) yhsbso,5 a
{ <)]j;Tl
nEndPos = nStartPos[i+1]; o4qB0h
} .-mlV ^
nEndPos[nEndPos.length-1] = nFileLength; Qd"R@+i
} ^ZD0rp(l
} 3?x}48
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//启动子线程 D/`b~Yl
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ?y|8bw<
for(int i=0;i<nStartPos.length;i++) CkeqK
{ |h 3`z
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), X-']D_f|,
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), +\GuZ5`
nStartPos,nEndPos,i); ']^_W0?=
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); +eVm+4WK
fileSplitterFetch.start(); ":vF[6K6
} 3bK=Q3N
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 8h{;*Wr-
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 1\LK[tvh
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", @tfatq+q
nEndPos = " + nFileLength); /I@`B2
// fileSplitterFetch[nPos.length-1].start(); Y{`hRz`
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//等待子线程结束 +rOfQ'lQ
//int count = 0; Pm=i(TBS/
//是否结束while循环 q+1SU6x'm
boolean breakWhile = false; 52v@zDY
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while(!bStop) (@3?JJ]1
{ hNL_e3
write_nPos(); J]gtgt^
Utility.sleep(500); ZK?:w^Z
breakWhile = true; j=V2~
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for(int i=0;i<nStartPos.length;i++) g7`uWAxZa
{ lfe^_`ij(+
if(!fileSplitterFetch.bDownOver) "*oN~&flc
{ 'l41];_
breakWhile = false; ;Ebpf J
break; &^JYIRn1\
} VCCG_K9'
} yiAusl;
if(breakWhile) Zoyo:vv&
break;
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//count++; ;o?Wn=J
//if(count>4) l
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// siteStop(); I%#
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} n,o;:c
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System.err.println("文件下载结束!"); Ku<_N]9
} &k0c|q]
catch(Exception e){e.printStackTrace ();} gt:Ot0\7
} (IIOVv
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//获得文件长度 J>S`}p
public long getFileSize() s[tFaB 1
{ ("rIz8b
int nFileLength = -1; ~8^)[n+)x
try{ *
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URL url = new URL(siteInfoBean.getSSiteURL()); -"X}
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Rss=ihlM
httpConnection.setRequestProperty("User-Agent","NetFox"); ko<VB#pOMr
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int responseCode=httpConnection.getResponseCode(); GcA!I!j/
if(responseCode>=400) WgC*bp{
{ CJ
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processErrorCode(responseCode); ]J6+nA6)
return -2; //-2 represent access is error bmu<V1[W
} ,';+A{aV
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String sHeader; Mb[4G>-v=
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for(int i=1;;i++) H=k`7YN
{ MB]Y|Vee
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); {r?qI
//Utility.log(in.readLine()); )bPF@'rF2
sHeader=httpConnection.getHeaderFieldKey(i); -"Q[n,"Y
if(sHeader!=null) Y'S9
{ #p^r)+\3=
if(sHeader.equals("Content-Length"))
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{ !B\[Q$
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); QWWoj[d#
break; gHzjI[WI
} L7qlvS Q
} R
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else qnZ`]?
break; ;o0o6pF
} 7f`x-iH!]7
} )gAFz+
catch(IOException e){e.printStackTrace ();} w_
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catch(Exception e){e.printStackTrace ();} m%?b"kxL[
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Utility.log(nFileLength); _*w}"\4_
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return nFileLength; xuDn:
} e`Z3{H}
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//保存下载信息(文件指针位置) 6uH1dsD
private void write_nPos() 7J%v""\1!
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try{ FE/2.!]&o
output = new DataOutputStream(new FileOutputStream(tmpFile)); y|+ltA K
output.writeInt(nStartPos.length); Y;eJo
for(int i=0;i<nStartPos.length;i++) ]Zf@NY
{ xR,;^R|C
// output.writeLong(nPos); R.)U<`| |
output.writeLong(fileSplitterFetch.nStartPos); SEXLi8;/
output.writeLong(fileSplitterFetch.nEndPos); i#~1|2
} ~Zd n#z\
output.close(); r,4V SyZF\
} tK|hC[
catch(IOException e){e.printStackTrace ();} cMEM}Qh
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catch(Exception e){e.printStackTrace ();} TIa`cU`
} (u
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//读取保存的下载信息(文件指针位置) rHtT>UE=
private void read_nPos() " lf_`4
{ ]41G!'E=
try{ )LYj,do
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ab 1\nzpd
int nCount = input.readInt(); N>Pufr
nStartPos = new long[nCount]; \g}FoN&