/* /E$"\md
**SiteFileFetch.java G+
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*/ <splLZW3k
package NetFox; X{\>TOk
import java.io.*; +[8s9{1{C
import java.net.*; mb~w .~%
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public class SiteFileFetch extends Thread { !OekN,6
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SiteInfoBean siteInfoBean = null; //文件信息Bean L B1ui
long[] nStartPos; //开始位置 RS!~5nk5
long[] nEndPos; //结束位置 #>GUfhou)
FileSplitterFetch[] fileSplitterFetch; //子线程对象 N,V%/O{Y
long nFileLength; //文件长度 :XEr{X
boolean bFirst = true; //是否第一次取文件 xz[a3In+
boolean bStop = false; //停止标志 PmyS6a@
File tmpFile; //文件下载的临时信息 ]h~=lItTRZ
DataOutputStream output; //输出到文件的输出流 :q S=_!1
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) x0@J~
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public SiteFileFetch(SiteInfoBean bean) throws IOException ZdeRLX
{ j':Ybr>BR
siteInfoBean = bean; S*Un$ngAh
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); yd[}?
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); D{I^_~-\5
if(tmpFile.exists ()) lidzs<W-fW
{ RxU6.5N
bFirst = false; YFOSv]w
read_nPos(); iJIPH>UMX
} 2;r(?ebw
else n?_!gqK
{ hL~@Ah5&t
nStartPos = new long[bean.getNSplitter()]; nzE4P3 C+
nEndPos = new long[bean.getNSplitter()]; v' .:?9
} _%w-y(Sqn
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public void run() <iunDL0
{ i%+cPQ^o
//获得文件长度 9V`/zq?
//分割文件 SLpB$puS
//实例FileSplitterFetch $r *7)/
//启动FileSplitterFetch线程 s t P~/}
//等待子线程返回 csz/[*
try{ HGfV2FtT z
if(bFirst) 0RAmwfXm
{ 2MQgTFM9
nFileLength = getFileSize(); &Z/aM?
if(nFileLength == -1) !}|n3wQ
{ xCFk1%qf
System.err.println("File Length is not known!"); R}c,ahd
} DvHcT]l>5
else if(nFileLength == -2) $UavM|
{ 9KRHo%m
System.err.println("File is not access!"); TKj8a(R_
} =($RT
else @'j=oTT
{ ``j..v,
for(int i=0;i<nStartPos.length;i++) D% }?l
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); ,@jRe&6
} KlGPuGL
for(int i=0;i<nEndPos.length-1;i++) j9u/R01d
{ rlk0t159
nEndPos = nStartPos[i+1]; n o`c[XY
} ty[bIaQi
nEndPos[nEndPos.length-1] = nFileLength; ?r0#{x~
} -;&aU;k
} $D
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//启动子线程 ]+;1)
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 0ohpJh61Q
for(int i=0;i<nStartPos.length;i++) )$Xd#bzD|
{ A9\m.3jo
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 0{#,'sc;
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), MKLnt X
nStartPos,nEndPos,i); 5n!
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); }NW^?37
fileSplitterFetch.start(); e}y oy+9
} r,X5@/
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), z=:<]j#=
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); -jnx0{/
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", |ybW
nEndPos = " + nFileLength); n#t{3qzpD
// fileSplitterFetch[nPos.length-1].start(); .ii9-+_
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//等待子线程结束 8rwkux >
//int count = 0; =G3O7\KmH
//是否结束while循环 S453oG"
boolean breakWhile = false; l?v`kAMR
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while(!bStop) H$TYp
{ 0KO_bF#EB=
write_nPos(); *c4uCI:0t
Utility.sleep(500); gQ4Q
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breakWhile = true; HMGby2^+
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for(int i=0;i<nStartPos.length;i++) |@?B%sY
{ a3e<<<Z>R
if(!fileSplitterFetch.bDownOver) Cv862kP
{ FVM:%S
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breakWhile = false; M-1 VB5
break; zM{'GB+en
} .}>d[},F
} uH[d%y/
if(breakWhile) +6t<FH
break; 2:'C|
//cj$}Rn!
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//count++; im{'PgiR
//if(count>4) ON#\W>MK?
// siteStop(); z1[2.&9D-
} zJJ
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System.err.println("文件下载结束!"); Dz/I"bZLC
} jV
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catch(Exception e){e.printStackTrace ();} +^tq?PfE
} KD?~ hpg
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//获得文件长度 d2lOx|jt
public long getFileSize() 4<._)_m
{ b:3n)-V{ u
int nFileLength = -1; {Ts@#V=:
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URL url = new URL(siteInfoBean.getSSiteURL()); sW!pMkd_
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 4q#6.E;yy
httpConnection.setRequestProperty("User-Agent","NetFox"); 6Ug(J$Ouh
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int responseCode=httpConnection.getResponseCode(); P\\4 w)C
if(responseCode>=400) 2`>/y
{ hNBv|&D#
processErrorCode(responseCode); <![tn#_
return -2; //-2 represent access is error 'U
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} U ^1Xc#Ff
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String sHeader; wuE] ju<
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for(int i=1;;i++) `$oGgz6ZT
{ l'=H,8LfA
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); , f9V`Pz)
//Utility.log(in.readLine()); wy6> ^_z
sHeader=httpConnection.getHeaderFieldKey(i); 9,|{N(N<!
if(sHeader!=null) ?95^&4Oh0
{ kG_ K &,;@
if(sHeader.equals("Content-Length")) gX<"-,5jc
{ N:'v^0
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); W5,e;4/hL
break; T|^rFaA
} jqq96hP,
} 4zuM?Dp
else tiG=KHK%o
break; *A C){M
} dr0<K[S_
} kbzzage6L
catch(IOException e){e.printStackTrace ();} PD$XLZ
catch(Exception e){e.printStackTrace ();} "?EoYF_
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Utility.log(nFileLength); +c4]}9f!
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return nFileLength; q[p+OpA
} e!
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//保存下载信息(文件指针位置) i5wXT
private void write_nPos() X`bN/sI
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try{ =Q|_v}
output = new DataOutputStream(new FileOutputStream(tmpFile)); rFJ(t7\9h
output.writeInt(nStartPos.length); rT$J0"*=
for(int i=0;i<nStartPos.length;i++) l
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{ gi!{y
// output.writeLong(nPos); 2mUq$kws
output.writeLong(fileSplitterFetch.nStartPos); SKf9
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output.writeLong(fileSplitterFetch.nEndPos); ut
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} =" Q5Z6W
output.close(); l>K z5re^
} fwaq
catch(IOException e){e.printStackTrace ();} !f5I.r~
catch(Exception e){e.printStackTrace ();} d`]|i:*q
} j3{8]D
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//读取保存的下载信息(文件指针位置) ?K,xxH
private void read_nPos() pvCn+y/U;
{ ! bbVa/
try{ xo{3r\u?}
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); USF&; M3
int nCount = input.readInt(); 2{^k*Cfd
nStartPos = new long[nCount]; d]Y-^&]{]
nEndPos = new long[nCount]; 5bU[uT,`6
for(int i=0;i<nStartPos.length;i++) *L_ +rJj,
{ Pd-0u>k
nStartPos = input.readLong(); W,&z:z>
nEndPos = input.readLong(); P.^%8L
} UHr0J jQK
input.close(); H]e%8w))0
} sevaNs
catch(IOException e){e.printStackTrace ();} p)l >bC?3
catch(Exception e){e.printStackTrace ();} zK.%tx}+=k
} R
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