/* ]P.S5s'
**SiteFileFetch.java 8MIHp[vm%
*/ Ne%X:h
package NetFox; WVZ\4y
import java.io.*; n):VuOjm
import java.net.*; Ap/WgVw;
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public class SiteFileFetch extends Thread { ]l`DR4
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SiteInfoBean siteInfoBean = null; //文件信息Bean {PZe!EQ
long[] nStartPos; //开始位置 3iB8QO;pp
long[] nEndPos; //结束位置 NJ.kT uk
FileSplitterFetch[] fileSplitterFetch; //子线程对象 <T['J]k%
long nFileLength; //文件长度 Ks4TBi&J
boolean bFirst = true; //是否第一次取文件 nN[,$`JD,
boolean bStop = false; //停止标志 ZP1EO Z
File tmpFile; //文件下载的临时信息 ws=y*7$y
DataOutputStream output; //输出到文件的输出流 Mvux=Ws
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) E)Dik`Ccl
public SiteFileFetch(SiteInfoBean bean) throws IOException 1*Z}M%
{ .$Y[>9
siteInfoBean = bean; B6BOy~B0
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); QFMS]
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ZEW`?6
if(tmpFile.exists ()) X:YxsZQ5Y
{ q;rU}hAzG0
bFirst = false; ^VA)vLj@
read_nPos(); _Q QO&0Z
} =&vV$UtV
else YPN|qn(
{ `|gCbs95
nStartPos = new long[bean.getNSplitter()]; /SyiJCx0
nEndPos = new long[bean.getNSplitter()]; s;bqUY?LD
} BzDS
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} dG1qrh9_-
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public void run() cB|](gWS~
{ 9vXrC_W9
//获得文件长度 s;>jy/o0 s
//分割文件 , =#'?>Kq
//实例FileSplitterFetch Ox58L>:0m
//启动FileSplitterFetch线程 EM"YjC)F
//等待子线程返回 #6JG#!W
try{ /gxwp:&lY
if(bFirst) [K^RC;}nV^
{ 'INdZ8j_
nFileLength = getFileSize(); cEe>Lyt
if(nFileLength == -1) !aLL|}S
{ T7[ItLZ
System.err.println("File Length is not known!"); 4]Krx
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} C@xh$(y
else if(nFileLength == -2) 86[TBX5'
{ ;:v:pg8qc
System.err.println("File is not access!"); OfPWqNpO
} %N 2=: ;f
else Hg<]5
{ }nkX-PG9
for(int i=0;i<nStartPos.length;i++) )H)HR`
{ }psJ'aiG*
nStartPos = (long)(i*(nFileLength/nStartPos.length)); .Ir 5gz
} =V(I
for(int i=0;i<nEndPos.length-1;i++) d>2>mT$U
{ f"z96{zo
nEndPos = nStartPos[i+1]; @X|Cu bJ
} E;k'bz
nEndPos[nEndPos.length-1] = nFileLength; 9%|!+!j
} .QW89e,O3
} jfk`%CEk=
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//启动子线程 ;asB@Q
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; >=wlS\:"
for(int i=0;i<nStartPos.length;i++) NT:p6(s^
{ /aP`|&G,)
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), DvU(rr\p
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), m+zzhv1
nStartPos,nEndPos,i); EiSS_Lc
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); G> "w$Us
fileSplitterFetch.start(); <f1Pj
} Y7= *-
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Ig~lD>dnr'
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Or0=:?4`
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ",
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nEndPos = " + nFileLength); 9|fg\C
// fileSplitterFetch[nPos.length-1].start(); .^ soX}
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//等待子线程结束 IF<pT)
//int count = 0; awGI|d
//是否结束while循环 (z\@T`6`
boolean breakWhile = false; %+qD-{&
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while(!bStop) XB
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{ .cjSgK1
write_nPos(); z.--"cF
Utility.sleep(500); Ov h[qm?Z
breakWhile = true; \IIR2Xf,K
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for(int i=0;i<nStartPos.length;i++) -b8Vz}Y
{ ckS.j)@.c
if(!fileSplitterFetch.bDownOver) -m3O\X
{ V^[o{'+
breakWhile = false; ;~3CuN8
break; 9ELLJ@oNC
} 82{Lx7pI
} ,dP-sD;<
if(breakWhile) *Mgl X<
break; ~J)_S'
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//count++; E)7vuWOO
//if(count>4) 9t9x&.A
// siteStop(); unKi)v1
} (]>=y
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System.err.println("文件下载结束!"); E9i
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} -W<x|ph
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catch(Exception e){e.printStackTrace ();} Y xp.`
} QX-%<@
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//获得文件长度 Dyyf%'\M
public long getFileSize() hOG9
{ [@(M%
int nFileLength = -1; Bvb.N$G
try{ E<y0;l?H<
URL url = new URL(siteInfoBean.getSSiteURL()); u_shC"X:
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); B&3oo
httpConnection.setRequestProperty("User-Agent","NetFox"); Iy% fg',%
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int responseCode=httpConnection.getResponseCode(); <b!nI
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if(responseCode>=400) qbrY5;U
{ 5)bf$?d
processErrorCode(responseCode); ZCVwQ#Xe+
return -2; //-2 represent access is error )RG@D\t ,
} %5Q5xw]w3
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String sHeader; noJ5h|
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for(int i=1;;i++)
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{ B >2" O
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); dY[ XNP
//Utility.log(in.readLine()); 2[-@
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sHeader=httpConnection.getHeaderFieldKey(i); : .Y
if(sHeader!=null) [;~:',vHQf
{ 4LO4SYW7
if(sHeader.equals("Content-Length")) YW9r'{(D(I
{ B8_)I.
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); iYJ: P
break; <?yf<G'$
} dp;;20z
} F<H[-k*t/
else Av6=q=D
break; 4j+FDc`
} ])Rs.Y{Q5
} JWQd/
catch(IOException e){e.printStackTrace ();} 5yBaxw`
catch(Exception e){e.printStackTrace ();} qM}Uk3N0
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Utility.log(nFileLength); xgeDfpF'
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return nFileLength; z 3((L
} TNun)0p
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V;}kgWc1
//保存下载信息(文件指针位置) V}=%/OY?
private void write_nPos() 2yB)2n#ut
{ ~hiJOaCzM
try{ 1V?)T
output = new DataOutputStream(new FileOutputStream(tmpFile)); q+<<Ku(20
output.writeInt(nStartPos.length); n/]w!
for(int i=0;i<nStartPos.length;i++) Em6P6D>S>,
{ vl}fC@%WRI
// output.writeLong(nPos); TEB<ia3+
output.writeLong(fileSplitterFetch.nStartPos); }7Lo}}
output.writeLong(fileSplitterFetch.nEndPos); d6RO2^
} n`v;S>aT
output.close(); zt,Tda4Y
} %*:X
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catch(IOException e){e.printStackTrace ();} Qk`ykTS!
catch(Exception e){e.printStackTrace ();} iB-h3/
} hv.33l
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//读取保存的下载信息(文件指针位置) @9$u!ny0
private void read_nPos() ,EsPm'`?A/
{ b{+7sl
try{ U-h'a:
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); |aWeo.;c
int nCount = input.readInt(); KkD.n#A
nStartPos = new long[nCount]; ^lw0}
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nEndPos = new long[nCount]; WC0gJy
for(int i=0;i<nStartPos.length;i++) ]\TYVv)
{ KH=4A-e,0
nStartPos = input.readLong(); xvpCOoGsz
nEndPos = input.readLong();
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} _Fc :<Ym?
input.close(); =@ SJyW
} 8)KA {gN}
catch(IOException e){e.printStackTrace ();} BIJlU(aF
catch(Exception e){e.printStackTrace ();} $nf5bo/;
} g#W/WKvM
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private void processErrorCode(int nErrorCode) $~^Y4 }
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{ <t~RGn3
System.err.println("Error Code : " + nErrorCode); k 'CM^,F&
} O\~/J/u
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//停止文件下载 5>S=f{ghFw
public void siteStop() ng0tNifZ;
{ --D&a;CO}
bStop = true; A,H|c="
for(int i=0;i<nStartPos.length;i++) M'(4{4rC
fileSplitterFetch.splitterStop(); (B/od# nU
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} "J.7@\^ h/
} 7NQ@q--3s
//负责部分文件的抓取 Q85Y6',
**FileSplitterFetch.java [\_#n5
*/ 'L k&iph
package NetFox; 9e aqq
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import java.io.*; ,)svSzR
import java.net.*; ]QqT.z%B
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public class FileSplitterFetch extends Thread { 178u4$# b
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String sURL; //File URL
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long nStartPos; //File Snippet Start Position Hyn* O)q!
long nEndPos; //File Snippet End Position K|a^<|
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int nThreadID; //Thread's ID ;:`0:Ao.
boolean bDownOver = false; //Downing is over X:/Y^Xu
boolean bStop = false; //Stop identical 6he (v
FileAccessI fileAccessI = null; //File Access interface Y%GIKtP
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException s{Wj&.)M
{ 1woBw>g
this.sURL = sURL; {hRM=f7
this.nStartPos = nStart; 9im<J'
this.nEndPos = nEnd; /c4@QbB
nThreadID = id; o6b\
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 XX9u%BZ~
} o$XJSz|6
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public void run() MJ%gF=$X
{ Q($.s=&l;
while(nStartPos < nEndPos && !bStop) Qzh`x-S
{ ;ND)h pD+
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try{ O_~vl m<#
URL url = new URL(sURL); C)H1<Br7
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); tR{@NFUcu
httpConnection.setRequestProperty("User-Agent","NetFox"); $LXz
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String sProperty = "bytes="+nStartPos+"-"; {E3329t|'
httpConnection.setRequestProperty("RANGE",sProperty); lYq/
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Utility.log(sProperty); lk[BS*
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InputStream input = httpConnection.getInputStream(); n7$21*,
//logResponseHead(httpConnection); No(p:Snbo
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byte[] b = new byte[1024]; ;*AKeI2
int nRead; [W*xPXr*
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) %Jb/HWC[
{ bAkCk]>5
nStartPos += fileAccessI.write(b,0,nRead); O\z]1`i*o
//if(nThreadID == 1) wU $j/~L
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 2<X.kM?N{B
} \~4IOu
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Utility.log("Thread " + nThreadID + " is over!"); 24; BY'
bDownOver = true; gQ8FjL6?
//nPos = fileAccessI.write (b,0,nRead); x[m&ILr
} I}!ErV
catch(Exception e){e.printStackTrace ();} E4;@P']`
} :,~]R,tJQ
} 7wA.:$
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//打印回应的头信息 Ug~]!L
public void logResponseHead(HttpURLConnection con) m,1Hlp
{ AzlZe\V?)~
for(int i=1;;i++) um}%<Cy[
{ Z<A BK`rEO
String header=con.getHeaderFieldKey(i); R>#BJ^>=
if(header!=null) '^#=,+ A
//responseHeaders.put(header,httpConnection.getHeaderField(header)); V!XT=Ou?6
Utility.log(header+" : "+con.getHeaderField(header)); fa:V8xa
else qHtonJc
break; x<lY&KQ0
} XqxmvN
} [>#@?@x`P
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public void splitterStop() 9irT}e
{ tOEY|
bStop = true; mcgkNED
} lq[o2\
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} m&&Y=2
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/* s ~Xa=_+D
**FileAccess.java f*tKj.P
*//文件访问(定位,写) U1,f$McZs
package NetFox; #eZm)KFQg
import java.io.*; Zp'q;h_
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public class FileAccessI implements Serializable{ A6faRi703
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 W}0cM9 g
RandomAccessFile oSavedFile; ~REP@!\r^
long nPos; =o? Q0
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public FileAccessI() throws IOException
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{ >v9@p7Dn
this("",0); %'`L+y
} Xpp%j
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public FileAccessI(String sName,long nPos) throws IOException //O9}-
{ Ku3/xcu:My
oSavedFile = new RandomAccessFile(sName,"rw"); o
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this.nPos = nPos; VQe@H8>3
oSavedFile.seek(nPos); yG~7Xo5
} wrJ:jTh
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public synchronized int write(byte[] b,int nStart,int nLen) 8Vf]K}d
{ fHc/5uYW
int n = -1; ;mtv
try{ )o\U4t
oSavedFile.write(b,nStart,nLen); ?K>=>bS^h
n = nLen; 'v?"TZ
} ?]In@h-
catch(IOException e) >^|(AzS
{ AhauNS^"{R
e.printStackTrace (); [/'=M h
} WPXLN'w+
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return n; 1.6Y=Mh=i[
} z pV+W-j]
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} "H"4]m1Wc
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/* PEIf)**0N
**SiteInfoBean.java ,lUr[xzV
*/ Z?AX
package NetFox; hO H
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public class SiteInfoBean { Bq
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private String sSiteURL; //Site's URL ?jy6%Y#,i
private String sFilePath; //Saved File's Path F?EAIL
private String sFileName; //Saved File's Name =xX)2h
private int nSplitter; //Count of Splited Downloading File blHJhB&8
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public SiteInfoBean() }
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{//nSplitter的缺省值为5 Z<M?_<3
//default value of nSplitter is 5 jJU9~5i?
this("","","",5); l$mfsm|{:
} SIr^\iiOB
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) L-V+ `![{
{ 4y$tp18
sSiteURL= sURL; 2C@s-`b
sFilePath = sPath; kntM
sFileName = sName; .*acw
this.nSplitter = nSpiltter; 8&2W^f5
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} XZ1oV?Z4
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public String getSSiteURL() r)Dln5F
{ ImZ!8#
return sSiteURL; )e6)~3[^
} fH6mv0
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public void setSSiteURL(String value) mO|YX/>
{ p%?m|(4f
sSiteURL = value; co-dq\P
} :i8B'|DN5
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public String getSFilePath() ehe;<A
{
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return sFilePath; 6Rcl HU
} }_vUs jK
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public void setSFilePath(String value) LH_rc
{ +#Q\;;FNP
sFilePath = value; `eXTVi|0"~
} &Bfgvws;
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public String getSFileName() N# ?}r>W3
{ .{}=!>U2
return sFileName; h:qt?$]J
} hI Q 2s
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public void setSFileName(String value) ZQV,gIFys
{ h|Z%b_a
sFileName = value; /%4wm?(eA
} P9/Bc^5'
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public int getNSplitter() vC1D}=Fp
{ pY T^Ug
return nSplitter; C 7e
} |:jka
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public void setNSplitter(int nCount) Dx1 w I
{ 5&QDZnsl
nSplitter = nCount; (^)" qsB
} B<}0r4T}
} ,KO_h{mI<
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