/* nstUMr6
**SiteFileFetch.java '1M7M(va
*/ m0v:\?S:
package NetFox; `jwa<N4e@
import java.io.*; \&H nKhI
import java.net.*; &|/| ''A)
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public class SiteFileFetch extends Thread { 4:U?u
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SiteInfoBean siteInfoBean = null; //文件信息Bean qUly\b 47
long[] nStartPos; //开始位置 e^.Fa59
long[] nEndPos; //结束位置 `Od5Gh
FileSplitterFetch[] fileSplitterFetch; //子线程对象 )/z@vY
long nFileLength; //文件长度 Mn)@{^
boolean bFirst = true; //是否第一次取文件 mdRU^n
boolean bStop = false; //停止标志 jQ:OKh<Y
File tmpFile; //文件下载的临时信息 d/i`l*
DataOutputStream output; //输出到文件的输出流 &197P7&o
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) !Q#{o^{Y~
public SiteFileFetch(SiteInfoBean bean) throws IOException lT(oL|{#P
{ ;3'.C~
siteInfoBean = bean; kT;S4B
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); -wjN"g<
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); <:?r:fQX
if(tmpFile.exists ()) OF\rgz
{ L'u\w
bFirst = false; 2Lx3=[ik
read_nPos(); aG^4BpIP
} }Hn/I,/
else k{'0[,mx#
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nStartPos = new long[bean.getNSplitter()];
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nEndPos = new long[bean.getNSplitter()]; k1QpKn*
} y- 1 pR
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} ~Q\3pI. |
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public void run() >yULC|'F&~
{ Z,=7Tu bR#
//获得文件长度 Y 'ow
//分割文件 '#k0a,<N
//实例FileSplitterFetch |`cKD >
//启动FileSplitterFetch线程 B'fb^n<
//等待子线程返回 l,kUhZ@W
try{ }`@728E
if(bFirst) ?]*^xL;x?
{ &uO%_6J
nFileLength = getFileSize(); x@*SEa
if(nFileLength == -1) -]QD|w3dp
{ HaP}Y:p
System.err.println("File Length is not known!"); WVI{oso#
} -?0qf,W.
else if(nFileLength == -2) yxH ( c
{ ?Orxmxc
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System.err.println("File is not access!"); t2lS
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} QDu 2?EYZq
else o#skR4lwe
{ Rb.SY{}C
for(int i=0;i<nStartPos.length;i++) g[3)P+
{ 9^j &VmF
nStartPos = (long)(i*(nFileLength/nStartPos.length)); !P-^O
} IP(Vr7-v
for(int i=0;i<nEndPos.length-1;i++) L|,!?cSAT
{ ;UfCj5`Q)4
nEndPos = nStartPos[i+1]; Z-l=\ekJ
} PS[+~>%
nEndPos[nEndPos.length-1] = nFileLength; mFi&YpHu3
} %T~ig[GstX
} v&=gF/$
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//启动子线程 kOed ]>H
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; "T|PS6R~
for(int i=0;i<nStartPos.length;i++) *m#Za<_Gv
{ `5C,N!d8X
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Y 1t\iU
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Wr( y)D<y}
nStartPos,nEndPos,i); =17t-
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); H XmS|PX
fileSplitterFetch.start(); FAj)OTI2S
} WS`qVL]^&
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 'L8'
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); R.yC(r
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", w$Rro)?}7
nEndPos = " + nFileLength); sNLs\4v
// fileSplitterFetch[nPos.length-1].start(); aXoVy&x=
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//等待子线程结束 oomT)gO 6*
//int count = 0; 4B^ZnFJ%m
//是否结束while循环 } x2DT8u
boolean breakWhile = false; fc
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while(!bStop) 8/=L2fNN[
{ dzDqZQY$
write_nPos(); z[3L2U~6
Utility.sleep(500); +w+}b^4
breakWhile = true; lhBT@5Dm9
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for(int i=0;i<nStartPos.length;i++) /|D*w^>
{ tQBRA/
if(!fileSplitterFetch.bDownOver) , T8>}U(
{ vuoQz\
breakWhile = false; {\:{[{qF
break; 6,0_)O}\b
}
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} L{8xlx`
if(breakWhile) !y@6Mm
break; o}* hY"&
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//count++; <psZQdH
//if(count>4) .n~M(59
// siteStop(); Np"exFqN k
} j'HZ\_
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System.err.println("文件下载结束!"); Z\k&gio5C^
} \Hn>oonph
catch(Exception e){e.printStackTrace ();} \Ol kM<
} _tYx~J2.Q
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//获得文件长度 /K.!sQ$
public long getFileSize() "-+\R}q$
{ 6I4oi@hZz
int nFileLength = -1; '2[albxSc
try{ O4og?h>
URL url = new URL(siteInfoBean.getSSiteURL()); n6BQk2l
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Y\$ySvZ0
httpConnection.setRequestProperty("User-Agent","NetFox"); s=0BMPDgm
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int responseCode=httpConnection.getResponseCode(); //s:5S<Z
if(responseCode>=400) !X;1 }
{ LdL/399<
processErrorCode(responseCode); Wwr;-Qa}g
return -2; //-2 represent access is error H*$jc\
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} d'G0m9u2
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String sHeader; 4X+ifZO
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for(int i=1;;i++) 5'X ]k@m_
{ K*X_FJ
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); P_Gw-`L5T
//Utility.log(in.readLine());
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sHeader=httpConnection.getHeaderFieldKey(i); "O%gFye
if(sHeader!=null) MP4z-4Y
{ ZHm7Isa1
if(sHeader.equals("Content-Length")) }MH0L#Tu
{ )|DM~%$QM
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); `s8{C
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break; nv~%#|v_W
} 8[E!E)4M
} 3%%o?8ES
else =9fajRFTt
break; f
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} ".<DAs j
} {;:/-0s
catch(IOException e){e.printStackTrace ();} u (em&M
catch(Exception e){e.printStackTrace ();} &8g?4v
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Utility.log(nFileLength); 93`
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return nFileLength; \ywXi~+kUv
} iC98_o_9
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//保存下载信息(文件指针位置) L;'"A#Pa
private void write_nPos()
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{ Vp3ZwS
try{ h3z{(-~y
output = new DataOutputStream(new FileOutputStream(tmpFile)); ?6fnpGX@a
output.writeInt(nStartPos.length); ?MgUY)X
for(int i=0;i<nStartPos.length;i++) \\u<S=G
{ S&b*rA02zp
// output.writeLong(nPos); YW60q0:
output.writeLong(fileSplitterFetch.nStartPos); A8oo@z68n>
output.writeLong(fileSplitterFetch.nEndPos); ](wvu(y\E
} Ns7(j-
output.close(); %0,#ADCqOe
} R}4So1
catch(IOException e){e.printStackTrace ();} 2IKnhBSV3
catch(Exception e){e.printStackTrace ();} A .EbXo/
} T^~5n6
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//读取保存的下载信息(文件指针位置) 9+{G8$Ai
private void read_nPos() S=e{MI
{ O"c;|zCc>
try{ \8?Tdx=
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); .xH5fMj,"
int nCount = input.readInt(); /iJ4{p
nStartPos = new long[nCount]; c%'RR?Tl
nEndPos = new long[nCount]; RWgNo#<
for(int i=0;i<nStartPos.length;i++) JQ6zVS2SSS
{ )`A3M)
nStartPos = input.readLong(); Vc2A
nEndPos = input.readLong(); n3D;"a3
} d[V;&U
input.close(); qx4I_%
} IbP#_Vt
catch(IOException e){e.printStackTrace ();} |,!IZ-
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catch(Exception e){e.printStackTrace ();} Ux}(?Z
} B hp-jq'!B
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private void processErrorCode(int nErrorCode) Xt@Z}B))pu
{ cxr=k%~}J
System.err.println("Error Code : " + nErrorCode); N=QfP
} DIzH`|Y
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//停止文件下载 ;bLEL"x%
public void siteStop() {yB&xj[z
{ aM:nOt" S1
bStop = true; $l|qk z
for(int i=0;i<nStartPos.length;i++) "vyNxZE
fileSplitterFetch.splitterStop(); 3T!lA
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