/* O&O1O>[p1
**SiteFileFetch.java Z
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*/ q,*IR*B:a
package NetFox; v =u|D$
import java.io.*; Mv9s
import java.net.*; H?aB8=)
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public class SiteFileFetch extends Thread { fB:M'A'
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SiteInfoBean siteInfoBean = null; //文件信息Bean ZRX>SyM
long[] nStartPos; //开始位置 I5bi^!i
long[] nEndPos; //结束位置 0CDTj,eK
FileSplitterFetch[] fileSplitterFetch; //子线程对象 t>25IJG
long nFileLength; //文件长度 $OUa3!U_!
boolean bFirst = true; //是否第一次取文件 <&x_e-;b'
boolean bStop = false; //停止标志 QOP*vH >J
File tmpFile; //文件下载的临时信息 V)0bLR
DataOutputStream output; //输出到文件的输出流 HSUr
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) @*_K#3
public SiteFileFetch(SiteInfoBean bean) throws IOException
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{ Xpa;F$VI
siteInfoBean = bean; 3^fZUldf
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); !~mN"+u&
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); F`ihw[
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if(tmpFile.exists ()) ) Z^(+
{ -9Can4
bFirst = false; w6cPd'
read_nPos(); $>BP}V33
} qt1#P
else -jyD!(
{ Nh+$'6yT%
nStartPos = new long[bean.getNSplitter()]; s0`uSQ2X
nEndPos = new long[bean.getNSplitter()]; IBuuZ.=j2h
} oZ8SEC"]
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} "Srp/g]a
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public void run() Dnp^yqz*
{ E@@quK
//获得文件长度 R4v=i)A~Z
//分割文件 5fLCmLM`
//实例FileSplitterFetch fe Q%L
//启动FileSplitterFetch线程 cKxJeM07
//等待子线程返回 r`&ofk1K
try{ " 7aFVf
if(bFirst) ]ny(l#Hu:
{ vx
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nFileLength = getFileSize(); $]T7Iwk
if(nFileLength == -1) |fJ,+)_(
{ ?(|!VLu
System.err.println("File Length is not known!"); z^oi15D|{
} .CYq+^
else if(nFileLength == -2) 91,\y
{ \(z)]D
System.err.println("File is not access!"); gr2zt&Z4
} ,sc>~B@Q
else *|jqRfa"
{ "TxXrt%>A
for(int i=0;i<nStartPos.length;i++) <bid 6Q0|
{ 3oIoQj+D
nStartPos = (long)(i*(nFileLength/nStartPos.length)); zMG4oRPP
} "90}H0(+
for(int i=0;i<nEndPos.length-1;i++) :N[2*.c[
{ .58AXg
nEndPos = nStartPos[i+1]; #
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} 7'o?'He-.2
nEndPos[nEndPos.length-1] = nFileLength; yrIT4y
} 95+}NJ;r
} #?-W.
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//启动子线程 T0SD|'
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Z$pR_dazU
for(int i=0;i<nStartPos.length;i++) /R,/hiKx\
{ x##Iv|$
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Wm\f:|U5`
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ())|x[>JS+
nStartPos,nEndPos,i); oZ=e/\[K
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); G>!"XK:fB
fileSplitterFetch.start(); J:Qp(s-N^:
} S1=c_!q%9
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), r|P4|_No
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); dxU[>m;
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", l p? h~
nEndPos = " + nFileLength); I,#U
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// fileSplitterFetch[nPos.length-1].start(); \"lzmxe0p
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//等待子线程结束
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//int count = 0; a;lCr|*
//是否结束while循环 `=\G>#p<T
boolean breakWhile = false; ({8Q=Gh
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while(!bStop)
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{ YnNei 7R
write_nPos(); xqG`
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Utility.sleep(500); (V+(\<M
breakWhile = true; w
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for(int i=0;i<nStartPos.length;i++) ?hwQY}
{ #AY+[+
if(!fileSplitterFetch.bDownOver) kTnvD|3_!P
{ -&HN h\
breakWhile = false; ;lK2]
break; 2f-Z\3)9 J
} GRs ;-Jt
} l"vT@g|
if(breakWhile) foN;Q1?lS
break; 't>Qj7vh0
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//count++; NyGF57v[M
//if(count>4) bLUn0)c
// siteStop(); hMD yE.X-
} D_8hn3FH
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System.err.println("文件下载结束!"); u!X2ju<
} mq
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catch(Exception e){e.printStackTrace ();} A#p@`|H#B
} 1%+0OmV&
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//获得文件长度 69L s"e
public long getFileSize() QKF2_Acc
{ CBvBBt*
int nFileLength = -1; LyQO_mT2
try{ rDSt
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URL url = new URL(siteInfoBean.getSSiteURL()); 0xjV*0?s
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 2R_k$kHl
httpConnection.setRequestProperty("User-Agent","NetFox"); TS%cTh'ItH
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int responseCode=httpConnection.getResponseCode(); pjoI};
if(responseCode>=400) )zt5`"/o
{ x^;nfqn|
processErrorCode(responseCode); HnpGPGz@F
return -2; //-2 represent access is error {UhZ\qe
} Q/+a{m0f
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String sHeader; lmd0Q(I
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for(int i=1;;i++) ]-q:Z4rb
{ Isi,Tl ^
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Z-~^)l o
//Utility.log(in.readLine()); : Z.mM5
sHeader=httpConnection.getHeaderFieldKey(i); a RV!0?fS
if(sHeader!=null) Psv-y
{ )/=J=xw2
if(sHeader.equals("Content-Length")) Pgo5&SQb
{ PJ_|=bn
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); rXaL1`t*
break; P_Zo}.{
} h(zi$V
} X31k HK5F_
else "y`?KY$[N
break; Wqqo8Y~fq
} %Wc-.ER
} =GpLlJ`-
catch(IOException e){e.printStackTrace ();} PK~okz4b
catch(Exception e){e.printStackTrace ();} ]A\n>Z!;
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Utility.log(nFileLength); {7;TQ?/
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return nFileLength; 44]ae~@a
} ^a]i&o[c
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//保存下载信息(文件指针位置) [C&c;YNp
private void write_nPos() $X{& KLM[
{ [R~HhM
try{ IEA[]eik>
output = new DataOutputStream(new FileOutputStream(tmpFile)); h0gT/x
output.writeInt(nStartPos.length); EuAa
for(int i=0;i<nStartPos.length;i++) g5?Fo%W
{ <&NR3^Eq
// output.writeLong(nPos); XYn$yR\dj
output.writeLong(fileSplitterFetch.nStartPos); gf!j|O ;
output.writeLong(fileSplitterFetch.nEndPos); K[9 <a>D`
} {<i!Pm
output.close(); }Jc^p
} *7Mrng
catch(IOException e){e.printStackTrace ();} II2oV}7?
catch(Exception e){e.printStackTrace ();} (O&b:D/Y
} ;uJVY)7a
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//读取保存的下载信息(文件指针位置) qR1ez-#K
private void read_nPos() q}8R>`Z{
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try{ `j2z=5
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ,p2
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int nCount = input.readInt(); duM>(y
nStartPos = new long[nCount]; M\GS&K$lq
nEndPos = new long[nCount]; $pD^O!I)?
for(int i=0;i<nStartPos.length;i++) FYi<+]HZ
{ q80?C.,`
nStartPos = input.readLong(); ;CC[>
nEndPos = input.readLong(); 8?(4E 'vf
} Zs4N0N{
input.close(); =l\D7s
} fL@[B{XMM
catch(IOException e){e.printStackTrace ();} 4ASc`w*0
catch(Exception e){e.printStackTrace ();} ik]UzB
} 5n"'M&Ce
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private void processErrorCode(int nErrorCode) aH~il!K
{ -}>Q0d )
System.err.println("Error Code : " + nErrorCode); Z2ZS5a
} O[m+5+
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//停止文件下载 dW=]|t&
public void siteStop() %>s y`c
{
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bStop = true; N@) D,~
for(int i=0;i<nStartPos.length;i++) ei"FN3 Rm
fileSplitterFetch.splitterStop(); 1b't"i M
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} ^o{O5&i]
} :xA'X+d/'
//负责部分文件的抓取 PeG8_X}u9
**FileSplitterFetch.java cL}g7D
*/ {:"bX~<^
package NetFox; Kg%_e9nj#
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import java.io.*; ~+1t17
import java.net.*; J4JKAv~3
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public class FileSplitterFetch extends Thread { EBn7waBS
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String sURL; //File URL .|rpj&>g
long nStartPos; //File Snippet Start Position LsLsSV
long nEndPos; //File Snippet End Position jKtbGVZ7r
int nThreadID; //Thread's ID ^y??pp<1J
boolean bDownOver = false; //Downing is over 5ecqJ
boolean bStop = false; //Stop identical uh GL1{
FileAccessI fileAccessI = null; //File Access interface Vdjca:`
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException sqkPC_;A
{ K/08F|]a
this.sURL = sURL; toP7b
this.nStartPos = nStart; V43|Ej}E
this.nEndPos = nEnd; u6D>^qF}@'
nThreadID = id; VbZZ=q=Kd
fileAccessI = new FileAccessI(sName,nStartPos);//定位 :*\JJ w
} ?{+}gS^
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public void run() fghJj@ES
{ n0cqM}P@;!
while(nStartPos < nEndPos && !bStop) >`t
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{ [aIQ/&