/* aA?Uf~ "t
**SiteFileFetch.java \jDD=ew
*/ TU4"7]/{M
package NetFox; HV-c
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import java.io.*; =*7K_M&
import java.net.*; {<{
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public class SiteFileFetch extends Thread { p]/HZS.-b
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SiteInfoBean siteInfoBean = null; //文件信息Bean 0b%"=J2/p.
long[] nStartPos; //开始位置 Tf/jd 3>
long[] nEndPos; //结束位置 &<}vs`W
FileSplitterFetch[] fileSplitterFetch; //子线程对象 u}ULb F
long nFileLength; //文件长度 BbEWa
boolean bFirst = true; //是否第一次取文件 YvD+Lk' hm
boolean bStop = false; //停止标志 P,-f]k[_
File tmpFile; //文件下载的临时信息
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DataOutputStream output; //输出到文件的输出流 Gf'qPLK0
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) R57>z`;
public SiteFileFetch(SiteInfoBean bean) throws IOException f8yE>qJP
{ b(JQ>,hX
siteInfoBean = bean; 36mp+}R#
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); We&~]-b AW
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); f%fD>a
if(tmpFile.exists ()) m2 0:{fld
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bFirst = false; 84v7g`lrR
read_nPos(); .{[+d3+,
} $VOSd<87
else P;_}nbB
{ t*Hr(|.
nStartPos = new long[bean.getNSplitter()]; LpwjP4vWJ
nEndPos = new long[bean.getNSplitter()]; ZbVo<p5* ]
} 77D>;90>?
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} qxKW%{6o
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public void run() d:C|laZHn
{ 1t&LNIc|^
//获得文件长度 = F*SAz
//分割文件
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//实例FileSplitterFetch kr ,&aP<,
//启动FileSplitterFetch线程 =-wF Brw
//等待子线程返回 i\~@2
try{ NWnUXR
if(bFirst) ^3re*u4b=
{ SU>2MT^
nFileLength = getFileSize(); /4Ud6gscf
if(nFileLength == -1) (QS4<J"
{ 8t)5b.PS
System.err.println("File Length is not known!"); []^fb,5a
} <'WS -P%U
else if(nFileLength == -2) t&5N{C:
{ O5X@'.#rU
System.err.println("File is not access!"); u!4i+7}
} ViZ Tl~
else u^2)oL
{ kAc8[Hn
for(int i=0;i<nStartPos.length;i++) %?<Y&t
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); =CBY_
} MZJ@qIg[Y
for(int i=0;i<nEndPos.length-1;i++) v_U+wga
{ TS2zzYE6Z
nEndPos = nStartPos[i+1]; ;iA6[uz
} ]#$l"ss,
nEndPos[nEndPos.length-1] = nFileLength; bhk:Szqz
} d\eTyN'rA
} CuT~
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//启动子线程 c+dmA(JC
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Z+p'3
for(int i=0;i<nStartPos.length;i++) {Xr|L
{ LVHIQ9
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Q[rmsk2L'
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), =74yhPAW
nStartPos,nEndPos,i); V
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ZMp5d4y5
fileSplitterFetch.start(); g>gVO@"b2
} Y8i'=Po%,
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 9Rf})$o+
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); _P].Z8
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", P5?M"j0/^
nEndPos = " + nFileLength); B}?$kp
// fileSplitterFetch[nPos.length-1].start(); e-&0f);i
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//等待子线程结束 Fu%D2%V$/
//int count = 0; i!yu%>:M
//是否结束while循环 VbU*&{j
boolean breakWhile = false; 3'*}ZDC
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while(!bStop) rlRRGJ\l
{ au+6ookT
write_nPos(); K^6fg,&
Utility.sleep(500); r
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breakWhile = true; xZE%Gf_U
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for(int i=0;i<nStartPos.length;i++)
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{ oS0rP'V^
if(!fileSplitterFetch.bDownOver) _6Z}_SiOl
{ 0?80V'
breakWhile = false; ;NoD4*
break; fkHCfcU
} -a+oQP]O
} R?Ys%~5
if(breakWhile) jhx @6[
break; W{!Slf
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//count++; 9JtPP
//if(count>4) (~U1X4
// siteStop(); KlbUs\E
} _N1UL?
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System.err.println("文件下载结束!"); ?S2!'L
} M/x*d4b_
catch(Exception e){e.printStackTrace ();} QnMN8Q9
} 8GKqPS+
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//获得文件长度 7dh--.i
public long getFileSize() "k>;K,:
{ X/AA8QV o
int nFileLength = -1; $T2n^yz
try{ `21$e
URL url = new URL(siteInfoBean.getSSiteURL()); r1]DkX <6
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); j0(+Kq:J
httpConnection.setRequestProperty("User-Agent","NetFox"); x6iT"\MO
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int responseCode=httpConnection.getResponseCode(); wK*b2r}0/
if(responseCode>=400) 0(h'ZV
{ egHvI&w"o
processErrorCode(responseCode); ^2<nn op
return -2; //-2 represent access is error R![)B97^
} \!J9|
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String sHeader; 69C>oX
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for(int i=1;;i++) nNP{>\x;"
{ #- z(]Y,y
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ;e#bl1%#
//Utility.log(in.readLine()); %:=Jr#a
sHeader=httpConnection.getHeaderFieldKey(i); S!{Kn ;@
if(sHeader!=null) tLc~]G*\`s
{ 2nv-/%]
if(sHeader.equals("Content-Length")) #Py\'
{ Ynx.$$`$=
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ;sZHE&+
break; mEVne.D
} Q"D%xY
} bqI| wGCA"
else ?YA5g' l
break; PTf.(B"z
}
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} d_!lRQ^N
catch(IOException e){e.printStackTrace ();} <f/wWu}
catch(Exception e){e.printStackTrace ();} n%%u0a%
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Utility.log(nFileLength); jb
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return nFileLength; S/)J<?<b
} *s}j:fJ
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//保存下载信息(文件指针位置) lk. ;
private void write_nPos() 3!<} -sW4
{ B_uAa5'
try{ oHj64fE9
output = new DataOutputStream(new FileOutputStream(tmpFile)); d*(wU>J '
output.writeInt(nStartPos.length); %n<.)R
for(int i=0;i<nStartPos.length;i++) W*D].|
{ ypA)G /;
// output.writeLong(nPos); OK1f Y`$z
output.writeLong(fileSplitterFetch.nStartPos); n?z^"vv$i
output.writeLong(fileSplitterFetch.nEndPos); iT}L9\
} ;x~[om21;
output.close(); _0c$SK
} ,Z1W3;O
catch(IOException e){e.printStackTrace ();} Q{))+'s2h
catch(Exception e){e.printStackTrace ();} 'h~I#S4!
} J"W+9sI0
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//读取保存的下载信息(文件指针位置) G ?&T0
private void read_nPos() e) x;3r"j
{ jpW(w($XL
try{ M!E#T-)
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); |Je+y;P7
int nCount = input.readInt(); M_monj}Z
nStartPos = new long[nCount]; },'Ij;
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nEndPos = new long[nCount]; sxBRg=
for(int i=0;i<nStartPos.length;i++) !YJ^BI
{ /qalj\ud
nStartPos = input.readLong(); nM,5KHU4a
nEndPos = input.readLong(); -ipfGb
} TPeBb8v8D
input.close(); {cF>,T
} `9yR,Xk=l
catch(IOException e){e.printStackTrace ();} Z<t(h=?
catch(Exception e){e.printStackTrace ();} fqgm`4>
} %M_5C4&6
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private void processErrorCode(int nErrorCode) 05>xQx?"m4
{ FII>6c
System.err.println("Error Code : " + nErrorCode); gc6T`O-_;
} 0XNj!^&
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//停止文件下载 mlmXFEC
public void siteStop() 1 n86Mp1.e
{ $EuWQq7OI2
bStop = true; Gr
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for(int i=0;i<nStartPos.length;i++) VSI.c`=,
fileSplitterFetch.splitterStop(); yt-F2Z&
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} $*u{i4b
} <Gr775"
//负责部分文件的抓取 dGb]`* E
**FileSplitterFetch.java c*"TmDY
*/ s3LR6Z7;i
package NetFox; 43?J~}<Vs
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import java.io.*; G2x5% `
import java.net.*; 6c/Tm0[
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public class FileSplitterFetch extends Thread { F
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String sURL; //File URL 2 #+g4
long nStartPos; //File Snippet Start Position VK)K#!O8
long nEndPos; //File Snippet End Position 5_mb+A n,
int nThreadID; //Thread's ID #^bkM)pc
boolean bDownOver = false; //Downing is over [@qUQ,Ie
boolean bStop = false; //Stop identical Yjr6/&ML
FileAccessI fileAccessI = null; //File Access interface W,^(FR.
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException U*'
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{ L|3wGY9E
this.sURL = sURL; h4GR:`
this.nStartPos = nStart; 2Q,8@2w;
this.nEndPos = nEnd; mYudUn4Wo
nThreadID = id; k_=~ObA$g
fileAccessI = new FileAccessI(sName,nStartPos);//定位 `aS9o]t
} g]g2`ab |
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public void run() Cz\(.MWNZ
{ USnKj_e
while(nStartPos < nEndPos && !bStop) @
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{ ezt_ct/Z
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