/* w0J|u'H
**SiteFileFetch.java S Xr%kndS
*/ yVJ%+d:6
package NetFox; zT9JBMNE:
import java.io.*; 4N>>+]MWc
import java.net.*; K8[DZ)rO;Z
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public class SiteFileFetch extends Thread { z`3( ,V
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SiteInfoBean siteInfoBean = null; //文件信息Bean B[o`k]]
long[] nStartPos; //开始位置 kOrl\_!z3
long[] nEndPos; //结束位置 !0}\&<8/m
FileSplitterFetch[] fileSplitterFetch; //子线程对象 WO*9+\[v
long nFileLength; //文件长度 $l[Rh1z`;+
boolean bFirst = true; //是否第一次取文件 ftbpqp'
boolean bStop = false; //停止标志 01@t~v3!Z
File tmpFile; //文件下载的临时信息 md Gwh7/3
DataOutputStream output; //输出到文件的输出流 zsQoU&D 5
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 9
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public SiteFileFetch(SiteInfoBean bean) throws IOException AMCyj`Ur
{ L>9R4:g
siteInfoBean = bean; G}zZQy
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); pdVQ*=c?M
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); m`A%
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if(tmpFile.exists ()) w=7L3AW
{ :k=mzO<&
bFirst = false; @{HrJ/4%:&
read_nPos(); A%bCMP
} +9A\HQ|22
else obH;g*
{ CI7A#
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nStartPos = new long[bean.getNSplitter()]; aaW]JmRb
nEndPos = new long[bean.getNSplitter()]; 6W2hr2Zy9
} =H`Q~Xx
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} ~Ci{3j :]
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public void run() A#y@`}]!'
{ r ,(Mu
//获得文件长度 Y3U9:VB
//分割文件 +cu^%CXT
//实例FileSplitterFetch 2DDsWJ;
//启动FileSplitterFetch线程 \?fI t?
//等待子线程返回 }
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try{ 6"
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if(bFirst) 5<YzalNf
{ bn9;7`>.
nFileLength = getFileSize(); zw@'vncc
if(nFileLength == -1) Ri7((x]H"
{ t67Cv/r~
System.err.println("File Length is not known!"); L:&k(YOBA
} X` YwP/D
else if(nFileLength == -2) ]+Ixi o
{ \,G#<>S
System.err.println("File is not access!"); &2.u%[gO[q
} (R}ii}&
else 2t#L:vY
{ 'DbMF?<.
for(int i=0;i<nStartPos.length;i++) %VNlXHO.
{ r7mD{0s*
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ",qU,0
} KW3+luI6
for(int i=0;i<nEndPos.length-1;i++) Li{~=S@N*
{ 2[yBD-":
nEndPos = nStartPos[i+1]; N:5[,O<m_
} }FqA ppr
nEndPos[nEndPos.length-1] = nFileLength; r?$?;%|C
} ))h6~1`
} dFXc/VH')
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//启动子线程 LRb,VD:/Y
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 4_?7&G0(
for(int i=0;i<nStartPos.length;i++) qOhO qV
{ {p<Zbm.
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [5d2D,)
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), a*dQ
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nStartPos,nEndPos,i); oMH.u^b]fT
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); uZjC
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fileSplitterFetch.start(); c,\i"=!$
} z_|oCT!6
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 5z$,6T
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); i'/m4 !>h
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ?)4?V\$
nEndPos = " + nFileLength); y(jg#7)
// fileSplitterFetch[nPos.length-1].start(); E+95WF|4k"
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//等待子线程结束 [#^#+ |{\
//int count = 0; I27,mS+]
//是否结束while循环 F=a+z/xKT
boolean breakWhile = false; `|Z}2vo;j
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while(!bStop) m:QG}{<.h
{ l ,|%7-
write_nPos(); a6xj\w
Utility.sleep(500); sYSLmUZ{
breakWhile = true; RzKb{>
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for(int i=0;i<nStartPos.length;i++) wucV_p.E
{ *Nb#W!
if(!fileSplitterFetch.bDownOver) $^/0<i$
{ <i\A_qqc/
breakWhile = false; C@\{ehG
break; 9=l.T/?sf
} JAc_kl{4O
} C)-^<
if(breakWhile) \*vHB`.,ey
break; >H][.@LyR
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//count++; ZfAzc6J?\
//if(count>4) 6]cryf&b
// siteStop(); }=](p-] 5
} k3!a$0Bs;
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System.err.println("文件下载结束!"); dhPKHrS
} ]$-cMX
catch(Exception e){e.printStackTrace ();} l~:v
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} (46 {r}_O
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//获得文件长度 TA18 gq
public long getFileSize() LwqC~N
{ "d/s5sP|S
int nFileLength = -1; '_s}o<
try{ {Bvj"mL]j
URL url = new URL(siteInfoBean.getSSiteURL()); ,Z9>h[JF
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &jA\hg#9
httpConnection.setRequestProperty("User-Agent","NetFox"); bp<^R
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int responseCode=httpConnection.getResponseCode(); {16<^
if(responseCode>=400) |iYg >
{ zSTR^sgJ
processErrorCode(responseCode); RSfM]w}Hq#
return -2; //-2 represent access is error Y&bMCI6U
} 6(&Y(/
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String sHeader; YB))S!;Ok
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for(int i=1;;i++) o?Nu:&yE
{ cc=gCE
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); }3 m0AQ;K
//Utility.log(in.readLine()); [onqNp
sHeader=httpConnection.getHeaderFieldKey(i); vE, 37
if(sHeader!=null) rnFM/GAy
{ kfb/n)b'
if(sHeader.equals("Content-Length")) U'( sn
{ b8KsR=]4I
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); |f( ~@Q:
break; |k 2" _
} CJknJn3m&
} 0BPMmk
else &[R8Q|1j
break; O>y'Nqz
} MhEw
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} j`*N,*ha
catch(IOException e){e.printStackTrace ();} 8ovM\9qT
catch(Exception e){e.printStackTrace ();} 4R%*Z~
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Utility.log(nFileLength); l;X|=eu'
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return nFileLength; p0p4Xh1e
} FyL_xu\e
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//保存下载信息(文件指针位置) kYwb -;
private void write_nPos() ws/63d*
{ EpPf_ \o
try{ ^4Am
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output = new DataOutputStream(new FileOutputStream(tmpFile)); G* b2,9&F
output.writeInt(nStartPos.length); gYAF'?
for(int i=0;i<nStartPos.length;i++) i8X`HbmN
{ Gi6T["
// output.writeLong(nPos);
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output.writeLong(fileSplitterFetch.nStartPos); H jNxqaljt
output.writeLong(fileSplitterFetch.nEndPos); Btt]R
} Yd
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output.close(); er.L7
} |aToUi.Q%
catch(IOException e){e.printStackTrace ();} C_fY %O
catch(Exception e){e.printStackTrace ();} q6P
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} Vn=qV3OE]
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//读取保存的下载信息(文件指针位置) S]3Ev#>
private void read_nPos() R\Z:n*
{ ov#7hxe
try{ qF)<H
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 7Du1RuxP
int nCount = input.readInt(); ]<uQ.~
nStartPos = new long[nCount]; V_n<?9^4
nEndPos = new long[nCount]; X2 6
for(int i=0;i<nStartPos.length;i++) f3*?MXxb16
{ 0o&MB
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nStartPos = input.readLong(); 7EhN u@5-
nEndPos = input.readLong(); YA(@5CZ
} +A_J1iJ<
input.close(); H(^bC5'
} $3+PbYY
catch(IOException e){e.printStackTrace ();} n";02?@F
catch(Exception e){e.printStackTrace ();} 36m5bYMd)
} N6oq90G
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private void processErrorCode(int nErrorCode) W{cY6@
{ `Kl`VP=c
System.err.println("Error Code : " + nErrorCode); a@d=>CT$
} .4.pJbOg
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//停止文件下载 @MR?6 n*k
public void siteStop() !hxIlVd{
{ v{x{=M]
bStop = true; -]G(ms;}/Y
for(int i=0;i<nStartPos.length;i++) s$h]
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fileSplitterFetch.splitterStop(); !7B\Xl'S
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} d?,M/$h
} 0\{BWNK
//负责部分文件的抓取 D]! aT+
**FileSplitterFetch.java %Tn#-
*/ {.e=qQ%P5)
package NetFox; :q##fG'm/
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import java.io.*; %T`U^Pnr
import java.net.*; s0UFym8
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public class FileSplitterFetch extends Thread { |w}w.%
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String sURL; //File URL /G{_7cb
long nStartPos; //File Snippet Start Position Jwn AW}=
long nEndPos; //File Snippet End Position f6<g3Q7Mu
int nThreadID; //Thread's ID }w-wSkl1
boolean bDownOver = false; //Downing is over 4_M>OD/"
boolean bStop = false; //Stop identical /BKe+]dS*
FileAccessI fileAccessI = null; //File Access interface !v#xb3"/
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException )n7l'}o?+
{ }$su4A@0
this.sURL = sURL; OV CR0
this.nStartPos = nStart; 3cl9wWlJ_E
this.nEndPos = nEnd; 1pp -=$k
nThreadID = id; ,0$)yZ3*3,
fileAccessI = new FileAccessI(sName,nStartPos);//定位 R/b4NGW@
} .?C%1a&_l
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public void run() "T/>d%O1b
{ lw%?z/HDf
while(nStartPos < nEndPos && !bStop) 4NVV5_K a
{ dmrps+L
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try{ 3ucP(Ex@tg
URL url = new URL(sURL); CCijf]+
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); JM$.O;y
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httpConnection.setRequestProperty("User-Agent","NetFox"); nHFrG
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String sProperty = "bytes="+nStartPos+"-"; R_P}~l
httpConnection.setRequestProperty("RANGE",sProperty); &Jc_Fc(M
Utility.log(sProperty); D.!~dyI.,$
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InputStream input = httpConnection.getInputStream(); >/f_F6ay#
//logResponseHead(httpConnection); }|)R
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byte[] b = new byte[1024]; 5,"l0nrk
int nRead; wVs.Vcwr
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) %rQuBi# 1f
{ `\>.h
nStartPos += fileAccessI.write(b,0,nRead); Lr;(xw\['
//if(nThreadID == 1) z~6y+
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); z1OFcqm
} EfLO5$?rm
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Utility.log("Thread " + nThreadID + " is over!"); ;d.K_P
bDownOver = true; Q }k.JS~#
//nPos = fileAccessI.write (b,0,nRead); C=Fzu&N}
} eS/B24;*
catch(Exception e){e.printStackTrace ();} tU wRE|_
} 9V uq,dv
} pC,o2~%{
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//打印回应的头信息 RNVbcd
public void logResponseHead(HttpURLConnection con) `D7C?M#j]
{ w^k;D,h
for(int i=1;;i++) }]1BO
{ \h<BDk*
String header=con.getHeaderFieldKey(i); 89}Y5#W
if(header!=null)
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//responseHeaders.put(header,httpConnection.getHeaderField(header)); Fh7'[>onw
Utility.log(header+" : "+con.getHeaderField(header)); ?VU(Pq*`
else N<|$h5isq
break; 2g{)AtK$#
} 2],_^XBvB
} p4> $z& _
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public void splitterStop() %b.UPS@I
{ q}Z3?W
bStop = true; 8{U-m0v
} FxG7Pk+=
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} UAF<m1
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/* tqPx$s
**FileAccess.java q}uHFp/J
*//文件访问(定位,写) $5`!Z%>/
package NetFox; +!-~yf#RE
import java.io.*; h~U02"$
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public class FileAccessI implements Serializable{ PHg48Y"Nd
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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 /e\{
RandomAccessFile oSavedFile; z!QDTIb
long nPos; t-u|U(n
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public FileAccessI() throws IOException $v.C0 x
{ 9_ICNG%
this("",0); Thy=yz;p
} $DFv30 f
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public FileAccessI(String sName,long nPos) throws IOException qJ!Z~-hS
{ 7z6b@$,
oSavedFile = new RandomAccessFile(sName,"rw"); \ A1uhHP!
this.nPos = nPos; fHrt+_Zn|
oSavedFile.seek(nPos); 6}~pq1IF{
} >e5 *prx+
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public synchronized int write(byte[] b,int nStart,int nLen) gMWBu~;!
{ .o%^'m"=D[
int n = -1; )o1eWL}
try{ Sydh2d
oSavedFile.write(b,nStart,nLen); ,7Y-k'7Kop
n = nLen; a~h:qpgc
} bo"%0?3n
catch(IOException e) V{-AP=C7
{ n;HHogA
e.printStackTrace (); r,SnXjp@
} 8GPIZh'0h
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return n; m4K* <
} "\"DCDKmG
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} 6[qA`x#
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/* J;t 7&Zpe
**SiteInfoBean.java v1U?&C
*/ )/ Ud^wi
package NetFox; rr`;W}3
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{
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public class SiteInfoBean { rjt8fN
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private String sSiteURL; //Site's URL <mA'X V,
private String sFilePath; //Saved File's Path *F^wtH`
private String sFileName; //Saved File's Name 3gWvmep1
private int nSplitter; //Count of Splited Downloading File +.B<Hd
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public SiteInfoBean() r'LVa6e"N
{//nSplitter的缺省值为5 '[|+aJ
//default value of nSplitter is 5 zr v]
this("","","",5); x} /,yaWZ
} uhH^>z
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) <>xJn{f0c
{ -Lu)'+
sSiteURL= sURL; %m,6}yt
sFilePath = sPath; ha@L94Lq
sFileName = sName; @tohNO>
this.nSplitter = nSpiltter; "|Fy+'5}
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} GY3 Wj
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public String getSSiteURL() 5la>a}+!!h
{ .JX EK
return sSiteURL; >%p{38
} VLsxdwHgb
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public void setSSiteURL(String value) 8*SDiZ
{ qs\2Z@;
sSiteURL = value; )C(>H93
} NqHy%'R
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public String getSFilePath() ~0$NJrUy
{ -\ZcOXpMx=
return sFilePath; 5*PYT=p}
}
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public void setSFilePath(String value) 2M<R(W!&
{ I4;A8I
sFilePath = value; m p<1yY]
} <99M@ cF
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public String getSFileName() i"zuil
{
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return sFileName; m^' uipa\
} lN,/3\B
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public void setSFileName(String value) $p!yhn7
{ }7fZ[J3
sFileName = value; '[$)bPMHl
} 7*j
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public int getNSplitter() ^Jb
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{ HS'Vi9
return nSplitter; Er/bO
} Ze<K=Q%(i
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public void setNSplitter(int nCount) @3fn)YQ'
{ NC&DF