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**SiteFileFetch.java sY@x(qkIOc
*/ xSL%1>MrN
package NetFox; lbnH|;`$]m
import java.io.*; G !;<#|a
import java.net.*; 5|Hz$oU
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public class SiteFileFetch extends Thread { xq\A TON
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SiteInfoBean siteInfoBean = null; //文件信息Bean K-,8~8[
long[] nStartPos; //开始位置 IHStN,QD
long[] nEndPos; //结束位置 \iM
FileSplitterFetch[] fileSplitterFetch; //子线程对象 P,ud"F=r
long nFileLength; //文件长度 6U[bAp
boolean bFirst = true; //是否第一次取文件 @`H47@e
boolean bStop = false; //停止标志 m
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File tmpFile; //文件下载的临时信息 } 0x'm
DataOutputStream output; //输出到文件的输出流 !R"iV^?V
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) pqnZ:'V
public SiteFileFetch(SiteInfoBean bean) throws IOException ;nZN}&m
{ 0zr Zrl
siteInfoBean = bean; (vb8Mk
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); =x^b
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); OM 4,Sevk
if(tmpFile.exists ()) ~CQTPR
{ >Z&Y!w'A|u
bFirst = false; *\T
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read_nPos(); FCPiU3
} #azD&6`
else 2#t35fU
{ w//L2.
nStartPos = new long[bean.getNSplitter()]; gbL!8Z1h
nEndPos = new long[bean.getNSplitter()]; LS{t7P9K
} iU9> qJ]
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public void run() KL4vr|i,
{ Sz#dld Mz
//获得文件长度 U6
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//分割文件
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//实例FileSplitterFetch ^L +@oS
//启动FileSplitterFetch线程 5V"g,]'Nd
//等待子线程返回 :$?^ID
try{ h4lrt
if(bFirst) ZA
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{ VMb r@9
nFileLength = getFileSize(); G~fM!F0
if(nFileLength == -1) 9e>Dqlv
{ p`}'-A|@
System.err.println("File Length is not known!"); mOE%:xq9-
} Ed +"F{!eQ
else if(nFileLength == -2) ^;gwD4(hs
{ b%"Lwqdr7
System.err.println("File is not access!"); TX7]$Wj
} Cp[
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else j&
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{ Kb5 Y A
for(int i=0;i<nStartPos.length;i++) M^3pJ=;5
{ Uf<hzP
nStartPos = (long)(i*(nFileLength/nStartPos.length)); {B,r
} ]v,>!~8r
for(int i=0;i<nEndPos.length-1;i++) }vspjplk^
{ %jnSJjcq
nEndPos = nStartPos[i+1]; csNB
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} [K4wd%+
nEndPos[nEndPos.length-1] = nFileLength; afNqK~
} L]ce13K
} w\QMA3
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//启动子线程 OPP^n-iPr
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; $bd2TVNV:
for(int i=0;i<nStartPos.length;i++) [/iT D=O,
{ ~qj09
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), @.SuHd
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), oo{3-+ ?
nStartPos,nEndPos,i); ne(zGJd
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); hEv}g
fileSplitterFetch.start(); o2vBY]Tj
} ^qP}/H[QT
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 02F[4c ~
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); y+g01z
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", QFYO_$1Y)
nEndPos = " + nFileLength); x{.+i'
// fileSplitterFetch[nPos.length-1].start(); H@%Y"iIUP
{} gr\
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//等待子线程结束 YN >k5\M_v
//int count = 0; MrGq{,6C
//是否结束while循环 >*FH JCe
boolean breakWhile = false; @;K-@*k3
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while(!bStop) 4Cn%
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{ MR{JMo=r
write_nPos(); GZ@`}7b}
Utility.sleep(500); ;ZVT[gi*
breakWhile = true; yv2N5IQ>{V
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for(int i=0;i<nStartPos.length;i++) 1#m'u5L
{ |1[3RnGS
if(!fileSplitterFetch.bDownOver) UBZ37P
{ ?!Bf# "TY
breakWhile = false; 6+s10?
break; wTw)GV4
} <*'%Xgm
} $wBF'|eU
if(breakWhile) *~>}*
break; Ub_!~tb}?
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//count++; ~aZy52H_#.
//if(count>4) ooW; s<6
// siteStop(); W3.(s~)o
} `z)q/;}fC
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System.err.println("文件下载结束!"); >&g^ `
} ^KRe(
catch(Exception e){e.printStackTrace ();} _9<nM48+t
} V@C8HTg
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//获得文件长度 )5Nj wLs
public long getFileSize() tzn+
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{ g,61'5\
int nFileLength = -1; iT2{3t
try{ 4[VW~x07
URL url = new URL(siteInfoBean.getSSiteURL()); *?v_AZ
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); %/:0x:ns
httpConnection.setRequestProperty("User-Agent","NetFox"); Q 2mTu[tx
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int responseCode=httpConnection.getResponseCode(); Wp2$L-T&$
if(responseCode>=400) L)qDtXd4
{ $]`rWSYtv`
processErrorCode(responseCode); yPXa
return -2; //-2 represent access is error c`E0sgp
} YQ7\99tj
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String sHeader; mY1Gm|
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for(int i=1;;i++) {IgLH`@
{ yRyUOTK
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ]I<w;.z
//Utility.log(in.readLine()); u"s@eN
sHeader=httpConnection.getHeaderFieldKey(i); `Hp=1a
if(sHeader!=null) gmW-#.
{ m*f"Y"B.1I
if(sHeader.equals("Content-Length")) =euMOs
{ o0}kRL
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 6a!b20IZh
break; V<&^zIJUR
} KKcajN
} \MU-D,@
else 9
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break; #M5pQ&yZy
} >.o<}!FW
} W Yo>Md
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catch(IOException e){e.printStackTrace ();} RE%25t|
catch(Exception e){e.printStackTrace ();} ;ZtN9l
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Utility.log(nFileLength); #9e 2+5s
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return nFileLength; qvC 2BQ
} #6F|}E
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//保存下载信息(文件指针位置) o#\c:D*k
private void write_nPos() %u!)1oOIz
{ nIEIb.-
try{ 4L _AhX7
output = new DataOutputStream(new FileOutputStream(tmpFile)); n3"
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output.writeInt(nStartPos.length); ym;I(TC+
for(int i=0;i<nStartPos.length;i++) l0K_29^
{ #\l#f8(l
// output.writeLong(nPos); &\iMIJ-
output.writeLong(fileSplitterFetch.nStartPos); C1w6[f1+
output.writeLong(fileSplitterFetch.nEndPos); me
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} U_C[9Z'P
output.close(); O[j$n
} 7:'5q]9
catch(IOException e){e.printStackTrace ();} ,:6.Gi)|
catch(Exception e){e.printStackTrace ();} U:q4OtiP
} OD6dMql
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//读取保存的下载信息(文件指针位置) c1M *w9o
private void read_nPos() ql I1<Jx
{ pqDlg
try{ f7?u`"C
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); :/\KVz'fw}
int nCount = input.readInt(); DCSmEy`.
nStartPos = new long[nCount]; j*_>/gi
nEndPos = new long[nCount]; q"-+`;^7(-
for(int i=0;i<nStartPos.length;i++) U]PsL3:
{ kIJ=]wU|v
nStartPos = input.readLong(); WiqkC#N
nEndPos = input.readLong(); -?L3"rxAP
} #:E^($v
input.close(); q-r5z GI
} =6d'/D#J
catch(IOException e){e.printStackTrace ();} Zfc{}ius
catch(Exception e){e.printStackTrace ();} Q;k
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} @g]>D
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private void processErrorCode(int nErrorCode) 4bq+(CI6
{ bo
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System.err.println("Error Code : " + nErrorCode); [H=l#W@
} TUX:[1~Nf[
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//停止文件下载 &\W5|*`x-
public void siteStop() / xb37,
{ gJg%3K~,
bStop = true; I|tn7|*-A[
for(int i=0;i<nStartPos.length;i++) S #C;"se
fileSplitterFetch.splitterStop(); 50^CILKo7
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} rU_FRk
} }w5`Oig[
//负责部分文件的抓取 yHs'E4V`$
**FileSplitterFetch.java 3A'9=h,lVK
*/ fiQ/ &]|5
package NetFox; (AT)w/
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import java.io.*; <ahcE1h
import java.net.*; ZW ZKy JQ
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public class FileSplitterFetch extends Thread { q)!G5j3
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String sURL; //File URL Qy\Koo
long nStartPos; //File Snippet Start Position e^h4cC\^
long nEndPos; //File Snippet End Position ) %bY2
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int nThreadID; //Thread's ID 6BObV/S Jg
boolean bDownOver = false; //Downing is over l-q.VY2
boolean bStop = false; //Stop identical /jN&VpDG
FileAccessI fileAccessI = null; //File Access interface ka<rlh<h
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException e$4l[&kH_
{ g.x]x#BC
this.sURL = sURL; eXCH*vZY
this.nStartPos = nStart; bdyIt)tK+
this.nEndPos = nEnd; @\Yu?_a
nThreadID = id; V3[>^ZCA
fileAccessI = new FileAccessI(sName,nStartPos);//定位 Jm3iYR+,
} q&@q/9kz
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public void run() J72YZrc
{ _j?/O)M
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while(nStartPos < nEndPos && !bStop) }>?"bcJ
{ 6@J)kV
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try{ \q:PU6q
URL url = new URL(sURL); }tPI#[cfK
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); bEl)/z*gy/
httpConnection.setRequestProperty("User-Agent","NetFox"); q6zKyOE
String sProperty = "bytes="+nStartPos+"-"; CDGN}Q2 _
httpConnection.setRequestProperty("RANGE",sProperty); u
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Utility.log(sProperty); "kkZK=}Nv
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InputStream input = httpConnection.getInputStream(); Jc, {n*
//logResponseHead(httpConnection); 8\rHSsP
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byte[] b = new byte[1024]; "hXB_73)V
int nRead; ]`}R,'P
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 3QD##Wr^
{ e]u3[ao
nStartPos += fileAccessI.write(b,0,nRead); QVQ?a&HYS
//if(nThreadID == 1) q/^&si
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 28d=-s=[
} aDE)Nf}
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