/* 0m.`$nlV-
**SiteFileFetch.java SDS P4W5
*/ d/Wp>A@dob
package NetFox; W-|CK&1
import java.io.*; PZ'|)
import java.net.*; TJW8 l[M
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public class SiteFileFetch extends Thread { aZ{ l6
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SiteInfoBean siteInfoBean = null; //文件信息Bean VB4V[jraCF
long[] nStartPos; //开始位置 h`O$L_Z
long[] nEndPos; //结束位置 }S')!3[G
FileSplitterFetch[] fileSplitterFetch; //子线程对象 *>zOWocxD
long nFileLength; //文件长度 $0P16ZlPC
boolean bFirst = true; //是否第一次取文件 D$H&^,?N
boolean bStop = false; //停止标志 ''q;yKpaz
File tmpFile; //文件下载的临时信息 Eul3 {+]
DataOutputStream output; //输出到文件的输出流 s 72yu}
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ht6}v<x.eA
public SiteFileFetch(SiteInfoBean bean) throws IOException 2G5|J{4w
{ =N\$$3m?
siteInfoBean = bean; HN/YuP03[
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); _99 +Vjy
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); h:C:opa-=
if(tmpFile.exists ()) L>WxAeyu1K
{ Bfdfw+
bFirst = false; >$CNR*}@
read_nPos(); ~l] w=[
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} +lFBH(o]X
else A/}[Z\C
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nStartPos = new long[bean.getNSplitter()]; ?z-nY,'^uq
nEndPos = new long[bean.getNSplitter()]; W=+AU!%
} f>cUdEPBb
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} F g):>];<9
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public void run() IUh9skW5
{ UA6
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//获得文件长度 9fTl6?x
//分割文件 8dt=@pwx&
//实例FileSplitterFetch mRyf+O[
//启动FileSplitterFetch线程 +jq@!P"}d
//等待子线程返回 jVGAgR=[G
try{ %yKcp5_
if(bFirst) b">"NvlB
{ AA ~7"2e
nFileLength = getFileSize(); Lp }V 94xT
if(nFileLength == -1) !H c6$
{ .-MJ5 d:
System.err.println("File Length is not known!"); A(BjU:D(Oj
} ]w]BKpU=
else if(nFileLength == -2) fMW=ss^fu-
{ _(io8zqe{j
System.err.println("File is not access!"); }7{(o-
} QFhyidm=]
else 0v1~#KCm
{ +9t{ovF?L
for(int i=0;i<nStartPos.length;i++) l6xqc,h!K
{ N~`r;E
nStartPos = (long)(i*(nFileLength/nStartPos.length)); F>n_k
} 8(q8}s$>
for(int i=0;i<nEndPos.length-1;i++) F2 <Q~gQ;
{ 3|G~_'`RLt
nEndPos = nStartPos[i+1]; 9<P%?Q
} g2LvojR
nEndPos[nEndPos.length-1] = nFileLength; ;BWWafZ
} }lJ|nl`c
} 7OXRR)]V
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//启动子线程 >
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 4PU@W o
for(int i=0;i<nStartPos.length;i++) D0S^Msk9L
{ ~WV1t][
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :AuK Q`c
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), P&Xy6@%[Z
nStartPos,nEndPos,i); DSp~k)
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); j 7O!uUQQ
fileSplitterFetch.start(); fffWvf
} 9M|#X1r{%{
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), -{d(~XIo
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); f1o^:}5x
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 94*MRn1E
nEndPos = " + nFileLength); ) 54cG
// fileSplitterFetch[nPos.length-1].start(); _x!/40^G
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//等待子线程结束 KiC,O7&<
//int count = 0; c1*^
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//是否结束while循环 "8(8]GgYx
boolean breakWhile = false; !>K=@9NC|.
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while(!bStop) qla=LS\-A+
{ b1=! "Y@
write_nPos(); E J6|y'
Utility.sleep(500); ,~l4-x.,
breakWhile = true; l}g_<
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for(int i=0;i<nStartPos.length;i++) wn<k"6x
{ gMZrtK`<
if(!fileSplitterFetch.bDownOver) %JA^b5''
{ !|ic{1!_
breakWhile = false; 5Go@1X]I
break; B&*`A&^y
} -&v0JvTJ9j
} P{2ED1T\
if(breakWhile) $3970ni,?O
break; !@+4&B=
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//count++; =1O;,8`
//if(count>4) ;1TQr3w
// siteStop(); <<YH4}wZ
} 4Xv."L
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System.err.println("文件下载结束!"); *tDxwD7
} &&96kg3
catch(Exception e){e.printStackTrace ();} '0qKb*
} S^i<_?nwg
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//获得文件长度 LN'})CI8m
public long getFileSize() WO+>W+|N
{ 3|/zlKZz
int nFileLength = -1; }~<9*M-P
try{ nqcD#HUv
URL url = new URL(siteInfoBean.getSSiteURL()); Et)j6xz/F
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~}K$z
httpConnection.setRequestProperty("User-Agent","NetFox"); dFnu&u"
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int responseCode=httpConnection.getResponseCode(); {E1^Wn1M
if(responseCode>=400) dJ{'b'#
{ _ukBp*u
processErrorCode(responseCode); ~c>]kL(,
return -2; //-2 represent access is error C7
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} ITU6Eq
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String sHeader; :C#(yp
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for(int i=1;;i++) XO/JnJ^B
{ P"+K'B7K3
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); QUc&f+~
//Utility.log(in.readLine()); l9NET
sHeader=httpConnection.getHeaderFieldKey(i); ^JB5-EtL(
if(sHeader!=null) @ c%h fI
{ TaTw,K|/
if(sHeader.equals("Content-Length")) O-<nLB!Wf
{ =l}XKl->
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); DDU)G51>d
break; FWpb5jc)3
} 6
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} W
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else X]Ma:1+
break; ItQ3|-^
} ?
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} G5zsId
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catch(IOException e){e.printStackTrace ();} p+{*&Hm5
catch(Exception e){e.printStackTrace ();} hKQg:30<
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Utility.log(nFileLength); Uv=hxV[7y
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return nFileLength; 1Qo2Z;h@
} R94ID@LF
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//保存下载信息(文件指针位置) rqi|8gKY
private void write_nPos() 0BHSeO,
{ ]}N&I_mU
try{ uJt*> ;Kp
output = new DataOutputStream(new FileOutputStream(tmpFile)); ZfWF2%]<
output.writeInt(nStartPos.length); X}j_k=, C
for(int i=0;i<nStartPos.length;i++) dWDf(SS
{ }!5+G:JAh
// output.writeLong(nPos); ]1i1_AR'`
output.writeLong(fileSplitterFetch.nStartPos); ':?MFkYC
output.writeLong(fileSplitterFetch.nEndPos); =:7OS>x
} &^b mZj!
output.close(); $N17GqoC
} c
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catch(IOException e){e.printStackTrace ();} B ez 7
catch(Exception e){e.printStackTrace ();} ~HyqHxy
} J~1=?</
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//读取保存的下载信息(文件指针位置) >=3ay^(Y2D
private void read_nPos() Z3nmC-NE
{ x[eho,6)
try{ )|i]"8I
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); D7(kkr:r
int nCount = input.readInt(); P{h$> 6c
nStartPos = new long[nCount]; W .bJ.hO*
nEndPos = new long[nCount]; 5R"(4a P
for(int i=0;i<nStartPos.length;i++) '?v-o)X
{ HPeN0=7>
nStartPos = input.readLong(); SRpPLY{:F
nEndPos = input.readLong(); -JB~yO?0
} Z3Y(g
input.close(); V|zatMHs
} I?IAZa)
catch(IOException e){e.printStackTrace ();} uMM?s?q
catch(Exception e){e.printStackTrace ();} :=^_N}
} VT`C<'
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private void processErrorCode(int nErrorCode) 94xRKQ}
{ b'5L|1d
System.err.println("Error Code : " + nErrorCode); *[O)VkL\%i
} /?g:`NT
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//停止文件下载 k_%"#
public void siteStop() d(8X?k.S
{ Y1h)0_0
bStop = true; )M(-EDL>Qk
for(int i=0;i<nStartPos.length;i++) lDm0O)Dh!
fileSplitterFetch.splitterStop(); Z4'8x h)-
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} j_2yTz"G-
} zd+<1R;
//负责部分文件的抓取 | ?])]F
**FileSplitterFetch.java %N
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*/ j6{9XIRo_
package NetFox; bB`p-1
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import java.io.*; Xeo2 < @[
import java.net.*; 'WLh
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public class FileSplitterFetch extends Thread { XrD@q
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String sURL; //File URL BVk&TGa;[$
long nStartPos; //File Snippet Start Position 8LM 91
long nEndPos; //File Snippet End Position /MUa
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int nThreadID; //Thread's ID vuE 1(CR
boolean bDownOver = false; //Downing is over eL7\})!W
boolean bStop = false; //Stop identical +Tug.[A
FileAccessI fileAccessI = null; //File Access interface pN
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ]NrA2i?
{ u= u#6%
this.sURL = sURL; 0pu=,
this.nStartPos = nStart; cK(S{|F
this.nEndPos = nEnd; CHPu$eu
nThreadID = id; }b5If7
fileAccessI = new FileAccessI(sName,nStartPos);//定位 OLS. 0UEc
} -l#h^
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public void run() @L ,hA
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{ 4)XZ'~|
while(nStartPos < nEndPos && !bStop) 2!+saf^-,
{ sF`ELrR \
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try{ ?onTW2cG;
URL url = new URL(sURL); FnFJw;:,{
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Z* Fxr;)d
httpConnection.setRequestProperty("User-Agent","NetFox"); zJ2dPp~u
String sProperty = "bytes="+nStartPos+"-"; sAG#M\A6
httpConnection.setRequestProperty("RANGE",sProperty); 9nrH
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Utility.log(sProperty); 4.}{B_)LK
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InputStream input = httpConnection.getInputStream(); a*4l!-7
//logResponseHead(httpConnection); ogrh"
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byte[] b = new byte[1024]; quPNwNy
int nRead; L93&.d@m9
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ;n)9
{ gh{Z=_
nStartPos += fileAccessI.write(b,0,nRead); */ ~_ 3
//if(nThreadID == 1) vCB0x:/
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Y%B:IeF}
} W".: 1ov#B
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Utility.log("Thread " + nThreadID + " is over!"); l,pI~A`w_
bDownOver = true; X_6h8n}i
//nPos = fileAccessI.write (b,0,nRead); y p}a&Dg
} BmP!/i_
catch(Exception e){e.printStackTrace ();} +l "z
} t69C48}15
} G{ 9p.Q
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//打印回应的头信息 y]5c!N %8
public void logResponseHead(HttpURLConnection con) j6NK7Li
{ 9 ^G.]W]
for(int i=1;;i++) iIe\m V
{ 1+f>tv
String header=con.getHeaderFieldKey(i); <]jKpJ{3N
if(header!=null) j~IX
//responseHeaders.put(header,httpConnection.getHeaderField(header)); /R2K3E#
Utility.log(header+" : "+con.getHeaderField(header)); W.fsW<{4j
else rX-V0
break; 0pYCh$TL1
} 7NY9UQ
} _|!FhZ
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public void splitterStop() Q>,EYb>wI
{ L1'#wH
bStop = true; ^+hqGu]M
} U=<d;2N#
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} Z;nbnRz
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/* 6WN1DW
**FileAccess.java /n9yv
*//文件访问(定位,写) zj ?^,\{A
package NetFox; Y_H|Fl^
import java.io.*; sC/5N
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public class FileAccessI implements Serializable{ E7_)P>aS5
: " ([i"
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Vz"Ja
RandomAccessFile oSavedFile; K,VN?t<h
long nPos; &_