/* Ze#DFe$
**SiteFileFetch.java x7`+T1IJ
*/ ;)P=WS:=
package NetFox; TqfL
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import java.io.*; }:;UnE}
import java.net.*; Km,o+9?1gF
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public class SiteFileFetch extends Thread { ;fN^MW@&[
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SiteInfoBean siteInfoBean = null; //文件信息Bean \+l_H4\`K
long[] nStartPos; //开始位置 iDhC_F|
long[] nEndPos; //结束位置 DQc\[Gq&
FileSplitterFetch[] fileSplitterFetch; //子线程对象 kp}[nehF
long nFileLength; //文件长度 s@y;b0$gk
boolean bFirst = true; //是否第一次取文件 oGl<i
boolean bStop = false; //停止标志 .c0u##/0
File tmpFile; //文件下载的临时信息 v9S=$Aj
DataOutputStream output; //输出到文件的输出流 #Er"i
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) <o*b6m%
public SiteFileFetch(SiteInfoBean bean) throws IOException 6-J}ZfGj
{ y'>JT/Q5
siteInfoBean = bean; 6%>'n?
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 6?C';1
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); *vEj\
if(tmpFile.exists ()) tns8B
{ T:H~Y+qnt
bFirst = false; 9&`";dg
read_nPos(); >7~*j4g
} 4m"0R\
else a l6y=;\jZ
{ [C<K~
nStartPos = new long[bean.getNSplitter()]; M* Ej*#
nEndPos = new long[bean.getNSplitter()]; "+wkruC
} S?C.:
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public void run() .P")S|
{ mU?~s7
//获得文件长度 4 dLnX3 v
//分割文件 q5'G]j{,Z
//实例FileSplitterFetch pPo(nH|<
//启动FileSplitterFetch线程 ?_A[E]/H
//等待子线程返回 d!Gy#<H
try{ ]7yxXg
if(bFirst) z\"
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{ tY!l}:E[
nFileLength = getFileSize(); udBIEW,`
if(nFileLength == -1) N}ND()bf
{ S4{vS?>j
System.err.println("File Length is not known!"); .s!0S-RkC
} RjPkH$u'Pj
else if(nFileLength == -2) =s]2?m
{ r Dlu&
System.err.println("File is not access!"); ,Tegrz&G
} Dc$q0|N=z
else cg17e
{ Dykh|"
for(int i=0;i<nStartPos.length;i++) !X~NL+
{ ZeU){CB
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ~ho,bwJM[T
} :l!sKT?:d!
for(int i=0;i<nEndPos.length-1;i++) !t"/w6X1I
{ <2&qIvHL
nEndPos = nStartPos[i+1]; Tj_K5uccU}
} ^L)3O|6c
nEndPos[nEndPos.length-1] = nFileLength; izaqEz
} I
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} "RK"Pn+
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//启动子线程 hZL!%sL7
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; b|DU
for(int i=0;i<nStartPos.length;i++) f:&JKB)N
{ O TlqJ
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %N~c9B
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), p}1gac_c
nStartPos,nEndPos,i); hp(MKfh H
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); LTo!DUi`
fileSplitterFetch.start(); jy5[K.
} 'l~7u({u
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), y] D\i5Xv
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); o4EY2
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", y'odn ;
nEndPos = " + nFileLength); ,e;,+w=~E
// fileSplitterFetch[nPos.length-1].start(); VV/T)qEe7>
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wZ\93W-}
//等待子线程结束 iBbaHU*V
//int count = 0; V'W*'wo
//是否结束while循环 \-6y#R-B
boolean breakWhile = false; ;
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while(!bStop) >W-xDzJry
{ \ 9V_[xD+
write_nPos(); 6c-'CW
Utility.sleep(500); ri59LY y=
breakWhile = true; PDA9.b<q0
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for(int i=0;i<nStartPos.length;i++) 6IT6EkiT
{ kjV>\e
if(!fileSplitterFetch.bDownOver) VgYy7\?p
{ fDB.r$|d
breakWhile = false; 4C_1wk('
break; YB4
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} :KX*j$5U
} F#<:ZByjJ@
if(breakWhile) 2D"my]FnF
break; `V V>AA5
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//count++; +,)k@OI
//if(count>4) ll$mRC
// siteStop(); uuFQTx))
} WeH_1$n5
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System.err.println("文件下载结束!"); oi7k#^
}
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catch(Exception e){e.printStackTrace ();} Y]`=cR`/"
} ETL7|C"
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//获得文件长度 B\rY\
public long getFileSize() PZV>A!7C8n
{ <HRPloVKo
int nFileLength = -1; ,{q#U3
try{ 0.R3(O
URL url = new URL(siteInfoBean.getSSiteURL()); O
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); PV"\9OIKb.
httpConnection.setRequestProperty("User-Agent","NetFox"); iN'T^+um=
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int responseCode=httpConnection.getResponseCode(); ^J7q,tvbJ
if(responseCode>=400) ['\R4H!x
{ 6q>iPK Jt
processErrorCode(responseCode); K*Ba;"Ugeg
return -2; //-2 represent access is error .{8[o[w
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} iC iKr aW
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String sHeader; CXoiA"P
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for(int i=1;;i++) :EHk]Hkz
{ DpmAB.
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); oO?+2pTQV
//Utility.log(in.readLine()); Q!IqvmO
sHeader=httpConnection.getHeaderFieldKey(i); lW#2 ox
if(sHeader!=null) Y9#dAI[Gce
{ 1:T"jsWw
if(sHeader.equals("Content-Length")) ET9tn1
{ yc7b%T*Y
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); O_2o/
break; m2(}$z3e
} Ucy=I$"
} Q
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else Ofoh4BL'1@
break; 4pXY7+e2'
} ~e[qh+
} Z7y%
catch(IOException e){e.printStackTrace ();} Kg<~Uf=1
catch(Exception e){e.printStackTrace ();} 1nvT={'R
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Utility.log(nFileLength); E x_dqko
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return nFileLength; pl,XS6mB
} @Q ~;@M
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//保存下载信息(文件指针位置) A9ld9R
private void write_nPos() 0VJHE~Bgi
{ Z)(#D($-
try{ _M7|:*
output = new DataOutputStream(new FileOutputStream(tmpFile)); Xu#?Lw
output.writeInt(nStartPos.length); DU*qhW`X
for(int i=0;i<nStartPos.length;i++) .@;5"
{ K9ih(fh)
// output.writeLong(nPos); wS7Vo{#@\
output.writeLong(fileSplitterFetch.nStartPos); Kt]vTn7!9
output.writeLong(fileSplitterFetch.nEndPos); Fpn'0&~-fi
} +B+cN[d
output.close(); c@]G;> o
} A
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catch(IOException e){e.printStackTrace ();} u0? TMy.%
catch(Exception e){e.printStackTrace ();} c-.F{~
} $'!n4}$}
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//读取保存的下载信息(文件指针位置) ' _K`1U
private void read_nPos() zh?B-"O=5
{ -g9CW[
try{ $OGMw+$C^
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); b/#<::D `
int nCount = input.readInt(); 1UrkDz?X
nStartPos = new long[nCount]; 91a);d
nEndPos = new long[nCount]; /
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for(int i=0;i<nStartPos.length;i++) @LU[po1I
{ e2nZwPH
nStartPos = input.readLong(); ? )IH#kL
nEndPos = input.readLong(); w+\RSqz/
} /@&uaw
input.close(); ,gkWksl9
} h"2^`
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catch(IOException e){e.printStackTrace ();} oc-o>H
catch(Exception e){e.printStackTrace ();} @JP6F[d
} iztF
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private void processErrorCode(int nErrorCode) OWYY2&.h
{ +@@( C9
System.err.println("Error Code : " + nErrorCode); 7
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} #fyY37-
* _,yK-et
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//停止文件下载 D2:ShyYAS
public void siteStop() p1z^i(
{ EScy!p\*
bStop = true; $VxuaOTyVZ
for(int i=0;i<nStartPos.length;i++) ) I.uqG
fileSplitterFetch.splitterStop(); WCI'Kh
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} %Si3LQf
} bXHtw}n
//负责部分文件的抓取 g87M"kQKA
**FileSplitterFetch.java Zl2doXC
*/ 7H[.o~\
package NetFox; _p+q)#.W
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import java.io.*; &G+:t)|S
import java.net.*; \FyHIs
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public class FileSplitterFetch extends Thread { fhQ N;7
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String sURL; //File URL 8O^z{Yh7
long nStartPos; //File Snippet Start Position }GGH:v
long nEndPos; //File Snippet End Position r*ry8QA
int nThreadID; //Thread's ID OgyHX>}bH
boolean bDownOver = false; //Downing is over D_I_=0qNd
boolean bStop = false; //Stop identical 8GT{vW9
FileAccessI fileAccessI = null; //File Access interface m] IN-'
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException IAbH_+7O
{ Uw>g^[V;
this.sURL = sURL; `q1K%id
this.nStartPos = nStart; S L%lY
this.nEndPos = nEnd; %|?PG i@5
nThreadID = id; ,tOc+3Qz$
fileAccessI = new FileAccessI(sName,nStartPos);//定位 ?u M2|Nk
} >K;C?gHo
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public void run() Aj2yAg
{ e_CgZ
while(nStartPos < nEndPos && !bStop) s$OnQc2/
{ ,7|2K &C5
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try{ &r!*Y&
URL url = new URL(sURL); 5?4jD]Z
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); XhJbBVS|
httpConnection.setRequestProperty("User-Agent","NetFox"); tdB<
String sProperty = "bytes="+nStartPos+"-"; ZZ{:f+=?$
httpConnection.setRequestProperty("RANGE",sProperty); pWXoJ0N
Utility.log(sProperty); dJd(m&.|N
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InputStream input = httpConnection.getInputStream(); M2e_)f:
//logResponseHead(httpConnection); Ce1^S[
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byte[] b = new byte[1024]; 8!{F6DG
int nRead; $17utJ58
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) J(\f(jh/
{ elf2!
nStartPos += fileAccessI.write(b,0,nRead); F&x9.
//if(nThreadID == 1) %B'*eBj~fw
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); -5t.1/
} DkGC+Dw
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Utility.log("Thread " + nThreadID + " is over!"); \sZ!F&a~
bDownOver = true; 0(!D1G{ul
//nPos = fileAccessI.write (b,0,nRead); h*9s^`9)
} A296f(
catch(Exception e){e.printStackTrace ();} VdV18-ea
} UFy"hJchO
} eE/E#W8
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//打印回应的头信息 Jx8?x#}
public void logResponseHead(HttpURLConnection con) ~4fjFo&