/* +L=Xc^
**SiteFileFetch.java }S*]#jr&
*/ ;Mmu}
package NetFox; LT)I
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import java.io.*; VOYQ<tg
import java.net.*; ydVDjE
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public class SiteFileFetch extends Thread { UOj*Gt&
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SiteInfoBean siteInfoBean = null; //文件信息Bean pcIS}+L
long[] nStartPos; //开始位置 }x#e.}hf&
long[] nEndPos; //结束位置 JS03BItt
FileSplitterFetch[] fileSplitterFetch; //子线程对象 XlX t,
long nFileLength; //文件长度 J>M 9t%f@
boolean bFirst = true; //是否第一次取文件 fJNK@F
boolean bStop = false; //停止标志 leF!Uog
File tmpFile; //文件下载的临时信息 g3Q;]8Y&
DataOutputStream output; //输出到文件的输出流 y<HNAGj
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) By9CliOy:
public SiteFileFetch(SiteInfoBean bean) throws IOException 7'At_oG
{ EajJv>X7
siteInfoBean = bean; x4 4V
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 7z{N}
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Cj }H'k<B
if(tmpFile.exists ()) (:]+IjnE
{ %*K zP{
bFirst = false; /:!l&1l:p
read_nPos(); K8&) kfyI
} !ni
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else 'cu14m_
{ oP
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nStartPos = new long[bean.getNSplitter()]; ?x 0gI
nEndPos = new long[bean.getNSplitter()]; $v_&jE
} n2_;:=
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} }l} _'FmQ
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public void run() @0
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//获得文件长度 :,yC\,H^
//分割文件 >\~Er@
//实例FileSplitterFetch "*`!.9pt
//启动FileSplitterFetch线程 ,o0Kev z
//等待子线程返回 kVCWyZh4
try{ T12Zak4.=
if(bFirst) B1Pi+-t
{ LPs5LE[Pm
nFileLength = getFileSize(); 86cnEj=
if(nFileLength == -1) L%3Bp/`S
{ $e4N4e2x/
System.err.println("File Length is not known!"); ,cS_687o
} vgDpo@fz8
else if(nFileLength == -2) ZI4dD.B
{ F/1m&1t
System.err.println("File is not access!"); K;Hgq4
} 1R yE8DdP
else gH,Pz
{ h 2JmRO
for(int i=0;i<nStartPos.length;i++) xCWS
{ t_16icF9U
nStartPos = (long)(i*(nFileLength/nStartPos.length)); PJ&L7
} $0OOH4
for(int i=0;i<nEndPos.length-1;i++) &PApO{#Q
{ S[hyN7sI
nEndPos = nStartPos[i+1]; +e.w]\}
} 8QL=%Pv
nEndPos[nEndPos.length-1] = nFileLength; HCkfw+gaV
} V
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} 3b#L*-
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//启动子线程 ]
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; &tf(vU;,'
for(int i=0;i<nStartPos.length;i++) Z'uiU e`&
{ A)j!Wgs^z
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ~H
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), }kItVx
nStartPos,nEndPos,i); n'q:L(`M
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 5`:d$rv
fileSplitterFetch.start(); 0y/31hp
} ~:0w%
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .#iot(g
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ?*
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", f9<"
nEndPos = " + nFileLength); \RPwSx
// fileSplitterFetch[nPos.length-1].start(); gs/o cu
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//等待子线程结束 -&]!ig5v
//int count = 0; l\Ww^
//是否结束while循环 D:IG;Rsc
boolean breakWhile = false; M=&,+#z<V
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while(!bStop) QS\wtTXj
{ P zM yUv
write_nPos(); <HN{.p{
Utility.sleep(500); olL? 6)gC
breakWhile = true; 1ZRkVHiz0
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for(int i=0;i<nStartPos.length;i++) ZvT>A#R;l~
{ u^JsKG+,:
if(!fileSplitterFetch.bDownOver) YHu]\'Ff
{ lsOfpJ
breakWhile = false; n{etDO
break; (dQ=i
} ,d* hhe
} 1iLU{m9
if(breakWhile) [.Kp/,JY
break; 1kvs2
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//count++; ; Ad5Jk
//if(count>4) ,p(&G_
// siteStop(); Ks6\lpr
} /Yg&:@L
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System.err.println("文件下载结束!"); ?YS 3)
} SA=>9L,2
catch(Exception e){e.printStackTrace ();} v*dw'i
} :Y1;= W
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//获得文件长度 xh9$ZavB*
public long getFileSize() o59$vX,
{ b.\xPb
int nFileLength = -1; V?wV*]c
try{ 3b]M\F9
URL url = new URL(siteInfoBean.getSSiteURL()); r;[ =y<Yf
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); +DR$ >a
httpConnection.setRequestProperty("User-Agent","NetFox"); woPj>M
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int responseCode=httpConnection.getResponseCode(); q}VdPt>X/
if(responseCode>=400) Ov?J"B'F
{ IOuqC.RJ}o
processErrorCode(responseCode); S1mMz
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return -2; //-2 represent access is error vW vu&3tx
} -]D/8,|s
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String sHeader; $8HiX6r
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for(int i=1;;i++) vxI9|i
{ PcU~1m1
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 0('ec60u
//Utility.log(in.readLine()); ,J!$Q0 e
sHeader=httpConnection.getHeaderFieldKey(i); /"u37f?[^
if(sHeader!=null) Rq[d\BN0.d
{ Ur>1eN%9'
if(sHeader.equals("Content-Length")) C}Kl!
{ 7X/t2Vih@
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); F N=WU<
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break; $GGaR x
} y*-_
} lG94^|U
else A(
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break; N1Ag.
} 6b'.WB]-
} X~JP
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catch(IOException e){e.printStackTrace ();} foQo`}"5
catch(Exception e){e.printStackTrace ();} 7>F{.\Z
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Utility.log(nFileLength); 4m1r@
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return nFileLength; sTlel&
} ja';NIO-
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//保存下载信息(文件指针位置) }F _c0zM
private void write_nPos() KbvMp1'9P
{ ZCPUNtOl
try{ SFDTHvXu#_
output = new DataOutputStream(new FileOutputStream(tmpFile)); Q
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output.writeInt(nStartPos.length); f6`GU$H
for(int i=0;i<nStartPos.length;i++) kv3Dn&<rJ
{ V<H9KA
// output.writeLong(nPos); Op?"G
output.writeLong(fileSplitterFetch.nStartPos); 31G0B_T
output.writeLong(fileSplitterFetch.nEndPos); Y6sX|~Zy
} p T 8?z
output.close(); x}?<9(nE c
} Wx{E\ l
catch(IOException e){e.printStackTrace ();} y3s+.5;
catch(Exception e){e.printStackTrace ();} RE%f'y
} KBN% TqH|
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//读取保存的下载信息(文件指针位置) tULGfvp
private void read_nPos() bP9ly9FH
{ @3O)#r}\
try{ "yaxHd
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); SXOAa<u5
int nCount = input.readInt(); *<