/* QAK.Qk?Qu
**SiteFileFetch.java Jm{~H%
*/ R:FyCT_,
package NetFox; *EzAo
import java.io.*; zP;1mN
import java.net.*; x|IG'R1:Y
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public class SiteFileFetch extends Thread { -Drm4sTpDb
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SiteInfoBean siteInfoBean = null; //文件信息Bean j,CMcP7A -
long[] nStartPos; //开始位置 Mb[4G>-v=
long[] nEndPos; //结束位置 PdD|3B&
FileSplitterFetch[] fileSplitterFetch; //子线程对象 yi9c+w)b
long nFileLength; //文件长度 6P:H`
boolean bFirst = true; //是否第一次取文件 ;3k6_ub
boolean bStop = false; //停止标志 C%+>uzVIw
File tmpFile; //文件下载的临时信息 `Ao;xOJ
DataOutputStream output; //输出到文件的输出流 8L}N,6gC4_
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ?FRQ!R
public SiteFileFetch(SiteInfoBean bean) throws IOException fl18x;^I
{ u#m(Py
siteInfoBean = bean; )#n>))
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); !WReThq
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ^Wz3 q-^
if(tmpFile.exists ()) [j`-R
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{ Cb/?hT
bFirst = false; @5-+>\Hd^t
read_nPos(); /,Sd
} !saKAb}d7H
else k&>l#oH
{ JI}p{yI
nStartPos = new long[bean.getNSplitter()]; S.Fip_
nEndPos = new long[bean.getNSplitter()]; ]0wmvTR
} 3tTz$$-#
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} ~IE5j,SC
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public void run() umWZ]8
{ W<uL{k.Kpd
//获得文件长度 6}6ky9
//分割文件 ]m(5>h#
//实例FileSplitterFetch T\h_8
//启动FileSplitterFetch线程 v1j]&3O
//等待子线程返回 xR,;^R|C
try{ 'D4KaM.d
if(bFirst) SEXLi8;/
{ i#~1|2
nFileLength = getFileSize(); 9N'um%J3%s
if(nFileLength == -1) y'k4>,`9e
{ 9/k?Lv
System.err.println("File Length is not known!"); (d C<N3
} &sx|sLw)
else if(nFileLength == -2) |k4ZTr]?
{ q61
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System.err.println("File is not access!"); =w.#j-jR
} g loo].z
else h;KI2k_^
{ (A*r&Ak[
for(int i=0;i<nStartPos.length;i++) V8xv@G{;
{ 1% )M-io
nStartPos = (long)(i*(nFileLength/nStartPos.length)); /z4xq'<
} xIo7f
for(int i=0;i<nEndPos.length-1;i++) VrokEK*qbY
{ }m<)$.x|P
nEndPos = nStartPos[i+1]; dMwVgc:
} [vaG{4m
nEndPos[nEndPos.length-1] = nFileLength; `<>8tZS9"
} A{E0 a:v
} Y4Z?`TL
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//启动子线程 9CWUhS
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; o+O\VNW
for(int i=0;i<nStartPos.length;i++) 8[FC
{ *3<m<<>U
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), FJ}QKDQW=
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ':!;6v|L
nStartPos,nEndPos,i); uu>[WFh
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 'eo2a&S2D
fileSplitterFetch.start(); QLH
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} t
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 8}Y(
@
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); b}$m!c:<8
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ",
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nEndPos = " + nFileLength); yg2~qa:dZ
// fileSplitterFetch[nPos.length-1].start(); C({L4O#?o
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_ }!Q4K
//等待子线程结束 j<+iL]b
//int count = 0; .@APxeU
//是否结束while循环 "MXd!
boolean breakWhile = false; )}c$n
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while(!bStop) !T0IMI
{ RkLH}`#
write_nPos(); XR\ iQ
Utility.sleep(500); hBE}?J>
breakWhile = true; <UQ:1W8>B
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for(int i=0;i<nStartPos.length;i++) eOn,`B1
{ fD\h5`-
if(!fileSplitterFetch.bDownOver) df1* [
{ u(ZS sftat
breakWhile = false; 1"odkM
break; BJj~fNm1Zr
} 3 XfXMVm
} SsznV}{^
if(breakWhile) mk4%]t"
break; jd2Fh):q
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//count++; 'KQuz)-
//if(count>4) g\(7z
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// siteStop(); VY _(0
} hkU#
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System.err.println("文件下载结束!"); t41cl
} ?o.G@-
catch(Exception e){e.printStackTrace ();} =,@SZsM*B
} jQ`"Op 3
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//获得文件长度 1C$^S]v%a
public long getFileSize() D}"GrY5
{ >; W)tc,
int nFileLength = -1; Y,(eu*Za
try{ Tz*5;y%4
URL url = new URL(siteInfoBean.getSSiteURL());
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); uEi!P2zN
httpConnection.setRequestProperty("User-Agent","NetFox"); Uero!+_
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int responseCode=httpConnection.getResponseCode(); s*l_O*$'
if(responseCode>=400) 2s{yg%U(
{ R9CAw>s
processErrorCode(responseCode); CYrL|{M]
return -2; //-2 represent access is error _~cmR<
} OC>" +
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String sHeader; ;JmD(T7{
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for(int i=1;;i++) 2hu6
{ y~luuV;uj
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); &e rNVD5o
//Utility.log(in.readLine()); g{J3Ba
sHeader=httpConnection.getHeaderFieldKey(i); 9M7P]$^
if(sHeader!=null) ev?>Nq+Z
{ d;;=s=j
if(sHeader.equals("Content-Length")) ttw@nv%
@
{ _?r+SRFn
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 2d>PN^x
break; ifgaBXT55
} u\E.H5u27
} 16Xwtn72
else ]Pd*w`R
break; 1OGlD+f
} NfO0^^"
} FFQF0.@EBi
catch(IOException e){e.printStackTrace ();} 2)8lJXM$L
catch(Exception e){e.printStackTrace ();} k{bba=<
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Utility.log(nFileLength); Va 5U`0
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return nFileLength; v[|iuOU
} n)=&=Uj`f
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//保存下载信息(文件指针位置) 4YCGh
private void write_nPos() vn_avYwiy
{ C}>)IH
try{ S;c=6@"
output = new DataOutputStream(new FileOutputStream(tmpFile)); drZw#b
output.writeInt(nStartPos.length); =['ijD4TW
for(int i=0;i<nStartPos.length;i++) ?)X@4Jem
{ kU
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// output.writeLong(nPos); Ww p^dx`!
output.writeLong(fileSplitterFetch.nStartPos); uJO*aA{K
output.writeLong(fileSplitterFetch.nEndPos); j>T''Tf
}
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output.close(); ?~K2&eo
} Rk=B;
catch(IOException e){e.printStackTrace ();} VO`A
catch(Exception e){e.printStackTrace ();} DEs?xl]zO
} S3<v?tqLr
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//读取保存的下载信息(文件指针位置) 9j"\Lr*o"
private void read_nPos() !eq]V9
{ JU@$(
try{ ;E&XFTdO
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); mOB\ `&h5
int nCount = input.readInt(); R3PhKdQ"
nStartPos = new long[nCount]; c5;ROnTm
nEndPos = new long[nCount]; e&5K]W0{
for(int i=0;i<nStartPos.length;i++) kMo)4Xp
{ 5Z[D(z
nStartPos = input.readLong(); B<R-|-#
nEndPos = input.readLong(); }rE|\p>
} yU.0'r5uR
input.close(); 7" [;M
} #J!?
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catch(IOException e){e.printStackTrace ();} uS'ji
k}
catch(Exception e){e.printStackTrace ();} NIfc/%
} #r:`bQ0;
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private void processErrorCode(int nErrorCode) hvyN8We
{ R}>Do=hAO
System.err.println("Error Code : " + nErrorCode); :tqjm:
} `9+EhP$RS
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//停止文件下载 Em,!=v(*
public void siteStop() v,+@
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{ >D<=9G(a
bStop = true; rd))H
for(int i=0;i<nStartPos.length;i++) }'W^Ki$
fileSplitterFetch.splitterStop(); uFm-HR@4
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} $D5U#
} 2YKM9Ks
//负责部分文件的抓取 cPcV[6)5K9
**FileSplitterFetch.java 2M?lgh4"
*/ Z?.*.<"Sj
package NetFox; ib_Gy77Os
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import java.io.*; s%oAsQ_y
import java.net.*; -y?Z}5-rs
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public class FileSplitterFetch extends Thread { )VMBo6:+
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String sURL; //File URL 0 '7s
long nStartPos; //File Snippet Start Position zD^f%p ["#
long nEndPos; //File Snippet End Position cJEz>Z6[
int nThreadID; //Thread's ID Oq,.Kz
boolean bDownOver = false; //Downing is over $`{q[ {
boolean bStop = false; //Stop identical Hi_Al,j:
FileAccessI fileAccessI = null; //File Access interface tR*W-%
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException lE)rRG+JLW
{ xH_ie
this.sURL = sURL; 4 Qel;
this.nStartPos = nStart; )O@^H
this.nEndPos = nEnd; ^HFU@/
nThreadID = id; gAA
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 sNfb %r
} -`dxx)x
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public void run() fsJTwSI["
{ [gkRXP[DGs
while(nStartPos < nEndPos && !bStop) 5Vnr"d
{ }gi1?a59
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try{ ,}IER
URL url = new URL(sURL); e0N=2i?I#z
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); A,lw-(.z4Z
httpConnection.setRequestProperty("User-Agent","NetFox"); rfXF 01I
String sProperty = "bytes="+nStartPos+"-"; $sc8)d\B
httpConnection.setRequestProperty("RANGE",sProperty); 0|s$vqc
Utility.log(sProperty); I0l.KiBm
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InputStream input = httpConnection.getInputStream(); E8iadf49
//logResponseHead(httpConnection); S?nNZW\6[
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byte[] b = new byte[1024]; W}R=
int nRead; XuFm4DEJ
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) W-C0YU1
{ v[,v{5b
nStartPos += fileAccessI.write(b,0,nRead); SJ@8[n.x
//if(nThreadID == 1) HV*:<2P%D
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); (ciGLfNG
} 1FD7~S|
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Utility.log("Thread " + nThreadID + " is over!"); ^i`3cCFB<
bDownOver = true; SA`J.4yn
//nPos = fileAccessI.write (b,0,nRead); |%:qhs,
} VRd:2uDS
catch(Exception e){e.printStackTrace ();} )WP]{ W)r
} 2pxWv
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} }P&1s,S8J#
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//打印回应的头信息 nj~$%vmA
public void logResponseHead(HttpURLConnection con) uGP[l`f|FQ
{ Io,/ +#|
for(int i=1;;i++) fz<|+(_>J
{ (sV]UGrZ
String header=con.getHeaderFieldKey(i); YoV^xl6g
if(header!=null) M]6w^\4j9
//responseHeaders.put(header,httpConnection.getHeaderField(header)); r21?c|IP
Utility.log(header+" : "+con.getHeaderField(header)); o7c%\v[
else =9DhO7I'
break; Z9J =vzsHE
} 1kvPiV=X>
}
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public void splitterStop() Pg*?[^*
{ 3D?IG\3
bStop = true; fB;&n
} eEW roF
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} ,-cpsN
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/* hb /8Q
**FileAccess.java RlI
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*//文件访问(定位,写) 'WKu0Yi^'
package NetFox; D_l/Gxdpr
import java.io.*; q5:0&:m$4$
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public class FileAccessI implements Serializable{ `YFkY^T
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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
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RandomAccessFile oSavedFile; )^jQkfL
long nPos; pX>ua5Z
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public FileAccessI() throws IOException &%|xc{i
{ g2[K<
this("",0); !pd7@FwC
} X)FL[RO%q
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public FileAccessI(String sName,long nPos) throws IOException KcIc'G 9
{ "_nX5J9
oSavedFile = new RandomAccessFile(sName,"rw"); )x$!K[=
this.nPos = nPos; IT8B~I\OY
oSavedFile.seek(nPos); sl~b\j
} EsT0"{
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public synchronized int write(byte[] b,int nStart,int nLen) iP~sft6
{ Sp<hai
int n = -1; K&j'c
try{ D"`%|`O
oSavedFile.write(b,nStart,nLen); .(`(chRa}
n = nLen; NY~ dM\
} b cC\
catch(IOException e) V8-4>H}Cb/
{ lKf Mp1
e.printStackTrace (); 8&?^XcJ*x
} s ;48v
b0y-H/d/}
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return n; ;
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} BfX%|CWh
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} 5fU!'ajaN7
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/* %rFP#L
**SiteInfoBean.java 1oB$MQoc
*/ #X4LLS]VV
package NetFox; Q%rVo4M#2
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public class SiteInfoBean { &q.)2o#Q.
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private String sSiteURL; //Site's URL MY&<)|v\
private String sFilePath; //Saved File's Path 6KVV z/
private String sFileName; //Saved File's Name g .3f2w
private int nSplitter; //Count of Splited Downloading File 2%bhW,?I
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public SiteInfoBean() R j-jAH
{//nSplitter的缺省值为5 m^z,,t9
//default value of nSplitter is 5 /;+oz
this("","","",5); 5Lw{0uLr
} D4d]3|/T
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) sb'lZFSP~s
{ sbzeY1
sSiteURL= sURL; 9-B@GFB;8
sFilePath = sPath; 5qGGu.$Ihi
sFileName = sName; gEE9/\>%-
this.nSplitter = nSpiltter; ,dOMW+{
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} cY{I:MA+h@
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public String getSSiteURL() %t q&
{ Kf|0*c
return sSiteURL; (s&ORoVGn
} g083J}08
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public void setSSiteURL(String value) Vw7WK
{ O
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sSiteURL = value; 2f `&WUe
} -W9gH
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public String getSFilePath() -7&?@M,u
{ j+nv=p
return sFilePath; (p^S~Ax
} gUspGsfr
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public void setSFilePath(String value) O6/xPeak
{ c+H)ed>
sFilePath = value; wBLsz/
} &u("|O)w$
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public String getSFileName() V>AS%lXj
{
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return sFileName; ?x'w~;9R/
} ~C0Pu.{o
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public void setSFileName(String value) vABXXB
{ =Aj"j-r&{
sFileName = value; % oR>Uo
} b1H7
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public int getNSplitter() UP R/XQ
{ ERp{gB2U?
return nSplitter; w?*jdwh,'
} ^zHRSO
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public void setNSplitter(int nCount) 1b8c67j[
{ Jb9F=s+
nSplitter = nCount; - {0g#G
} 4Mi~1iZj
} !M,h79NM
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