/* hy"\RW
**SiteFileFetch.java Od,qbU4O
*/ fSvM(3Y<Qh
package NetFox; Uf;^%*P4
import java.io.*; R|87%&6']
import java.net.*; u^8{Z;mm
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public class SiteFileFetch extends Thread { :emiQ
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SiteInfoBean siteInfoBean = null; //文件信息Bean nazZ*lC
long[] nStartPos; //开始位置 Gm^U;u}=f
long[] nEndPos; //结束位置 -ifFbT+x
FileSplitterFetch[] fileSplitterFetch; //子线程对象 6)
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long nFileLength; //文件长度 XrGglBIV
boolean bFirst = true; //是否第一次取文件 V#gK$uv
boolean bStop = false; //停止标志 gu.}M:u
File tmpFile; //文件下载的临时信息 eiaFaYe\
DataOutputStream output; //输出到文件的输出流 XW)lDiJl
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) c2 C8g1n
public SiteFileFetch(SiteInfoBean bean) throws IOException ['tY4$L(
{ 4*cEag
siteInfoBean = bean; w;:*P
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); `%"\@<
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); tpQ(g%
if(tmpFile.exists ()) YWO)HsjP
{ bI9~jWgGp
bFirst = false; ~H<6gN<j(.
read_nPos(); yg=q;Z>[~
} ~[nSXnPO
else H;k~oIsk
{ 3<f}nfB%r?
nStartPos = new long[bean.getNSplitter()]; 2E)-M9ds
nEndPos = new long[bean.getNSplitter()]; 9ZsVy
} w4{<n/"
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} \aUC(K~o\;
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public void run() K+K#+RBK
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//获得文件长度 &>W$6>@
//分割文件 j[G
//实例FileSplitterFetch )e=D(qd
//启动FileSplitterFetch线程 ;rGwc$?|
//等待子线程返回 cj|80$cSA
try{ Zbt.t]N
if(bFirst) '9Xu
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{ Vl=l?A8
nFileLength = getFileSize(); J7Hl\Q[D1
if(nFileLength == -1) bP$dU,@p~
{ e>7>j@(K]
System.err.println("File Length is not known!"); jB Z&Ad@e
} Q}K"24`=
else if(nFileLength == -2) s %``H`
{ M@H;pJ+B
System.err.println("File is not access!"); 4ber!rJM
} 'ud{m[|
else x$.^"l-vX
{ 5o'FS{6U
for(int i=0;i<nStartPos.length;i++) U!?_W=?
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); {14fA)`%
} qJa H,
for(int i=0;i<nEndPos.length-1;i++) {
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nEndPos = nStartPos[i+1]; Zd}9O jz5
} m_?~OL S
nEndPos[nEndPos.length-1] = nFileLength; D4lG[qb
} 0oZ=
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} O1U= X:Zl
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//启动子线程 Q4!_>YZ
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; +yH7v5W
for(int i=0;i<nStartPos.length;i++) z2_*%S@
{ .B]MpmpK
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), IS{wtuA.
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), pnowy;
nStartPos,nEndPos,i); #@9/g
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *K6g\f]b #
fileSplitterFetch.start(); FaQe_;
} b_#m}yZ6
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), gmO!
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 9`A;U|~E@
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 8:c-k|CX
nEndPos = " + nFileLength); ]}-7_n#cC
// fileSplitterFetch[nPos.length-1].start(); rq/yD,I,
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//等待子线程结束 kHghPn?8]
//int count = 0; 2G67NC?+
//是否结束while循环 RXpw!
boolean breakWhile = false; rb2S7k0{
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while(!bStop) ug!s7fo^
{ J6s`'gFns
write_nPos(); qo90t{|c
Utility.sleep(500); Ustv{:7v
breakWhile = true; nQX:T;WL@
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for(int i=0;i<nStartPos.length;i++) +,TRfP
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{ 85 |OGtt
if(!fileSplitterFetch.bDownOver) U0
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{ (cAIvgI
breakWhile = false; h5{'Q$Erl
break; 1MP~dRZ$
} MSQEO4ge
} VgG0VM
if(breakWhile) qPX~@^`9
break; L
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//count++; @Q
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//if(count>4) yYIf5S`V]
// siteStop(); L3u&/Tn2
} LEbB(x;@
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System.err.println("文件下载结束!"); -LoZs
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} ]_mb7X>
catch(Exception e){e.printStackTrace ();} lk^Ol&6
} c@!_/0
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//获得文件长度 ^e2VE_8L
public long getFileSize() Xy|So|/bKd
{ F 5bj=mI
int nFileLength = -1; n71r_S*
try{ 6@h/*WElG
URL url = new URL(siteInfoBean.getSSiteURL()); \%JgH=@
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); M)J5;^["
httpConnection.setRequestProperty("User-Agent","NetFox"); NR5gj-B[
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int responseCode=httpConnection.getResponseCode(); 7Utn\l
if(responseCode>=400) 'Vzp2
{ EA@.,7F
processErrorCode(responseCode); i^X]j
return -2; //-2 represent access is error xBThq?N?
} zsEc(
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String sHeader; AP n| \
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for(int i=1;;i++) 59LZv-l
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); -]N
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//Utility.log(in.readLine()); 9tU]`f
sHeader=httpConnection.getHeaderFieldKey(i); ''A_[J `>
if(sHeader!=null) 2@n{yYwy
{ [`#CXq'
if(sHeader.equals("Content-Length")) O%WIf__Q
{ #`qx<y*S
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); dc+>m,3$
break; !fV+z%:
} Fd%#78UEo}
} #5Q pu
else c?(4t67|
break; vONasD9At
} a5dLQxb
} -P(efYk
catch(IOException e){e.printStackTrace ();} jnkR}wAA
catch(Exception e){e.printStackTrace ();} !hA-_
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Utility.log(nFileLength); f&NgS+<K$
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return nFileLength; >2y':fO
} %8RrRW
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//保存下载信息(文件指针位置) oM
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private void write_nPos() 8 `v-<J
{ n2"a{Ofhlf
try{ +RHS!0
output = new DataOutputStream(new FileOutputStream(tmpFile)); ^rB8? kt
output.writeInt(nStartPos.length); aj-Km`5r}
for(int i=0;i<nStartPos.length;i++) HDz5&