/* '&-5CpDUs
**SiteFileFetch.java 29a_ZU7e6
*/ Q{AZ'XV
package NetFox; ~U"by_
import java.io.*; g[EM]q,
import java.net.*; mq
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public class SiteFileFetch extends Thread { K0O-WJ
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SiteInfoBean siteInfoBean = null; //文件信息Bean Lp:Nw4 _
long[] nStartPos; //开始位置 nDHHYp
long[] nEndPos; //结束位置 /nC{)s?S'
FileSplitterFetch[] fileSplitterFetch; //子线程对象 p}YI#f
in/
long nFileLength; //文件长度 #Mj$o;SX
boolean bFirst = true; //是否第一次取文件 ,7^d9v3t
boolean bStop = false; //停止标志 r,2Xu
File tmpFile; //文件下载的临时信息 "x#]i aDjf
DataOutputStream output; //输出到文件的输出流 S'Z70 zJ
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 2^)D
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public SiteFileFetch(SiteInfoBean bean) throws IOException c*x J=Gz6d
{ QKp+;$SE'
siteInfoBean = bean; +cz"`T`X 2
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 7tpAZ<{
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); r5MxjuOB1
if(tmpFile.exists ()) E-UB -"6
{ y|q@;*rGNa
bFirst = false; jlu`lG*e&
read_nPos(); (NH8AS<
} @-'/__cgt
else ^M`>YOU2+
{ xwTijSj
nStartPos = new long[bean.getNSplitter()]; `z9)YH
nEndPos = new long[bean.getNSplitter()]; LP^p~5Az
} VHXI@UT*
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} dT5J-70Fl
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public void run() z.eJEK
{ 3R5K}ZBi%
//获得文件长度 *j|/2+pq
//分割文件 iYk':iv}S
//实例FileSplitterFetch 5;IT64&]
//启动FileSplitterFetch线程 _PK}rr?"7O
//等待子线程返回 W|)GV0YM
try{ 99 <4t$KH
if(bFirst) Mw/?wtW
{ v<L=!-b^
nFileLength = getFileSize(); nd.57@*M
if(nFileLength == -1) J.1O/Pw!.a
{ S5uJX#*;
System.err.println("File Length is not known!"); H_VEPp,T
} rHvF%o
else if(nFileLength == -2) _Zh2eXWdjM
{ 4bP13f
System.err.println("File is not access!"); 2 ]L=s3
} (C,e6r Y
else U(U@!G)
{ &Fw[YGJayz
for(int i=0;i<nStartPos.length;i++) `TUZZz
{ 'S =sj}X
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 1TKEm9j]u
} hHcJN
for(int i=0;i<nEndPos.length-1;i++) P+[QI
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{ TqIAWbb&
nEndPos = nStartPos[i+1]; "gFxfWIA
} s(Z(e %
nEndPos[nEndPos.length-1] = nFileLength; YTQ5sFuGM
} j]rXoV>
} /+>)"D6'
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//启动子线程 ZAMeqPt
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; DW#Bfo
for(int i=0;i<nStartPos.length;i++) ,Kuk_@(}5~
{ >9ob *6q,
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1Fv8T'
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), TYYp"wx
nStartPos,nEndPos,i); G 0hYFc u
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); @&;(D!_&
fileSplitterFetch.start(); Z+ixRch@-s
} v2d<o[[C
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ?-pi,O~(p
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); BWWq4mdb{
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", hw;0t,1
nEndPos = " + nFileLength); 'iJDWxCD
// fileSplitterFetch[nPos.length-1].start(); =/[ltUKs:a
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//等待子线程结束 n|WfaJQZ
//int count = 0; F9-[%l
//是否结束while循环 uS~#4;R
boolean breakWhile = false; 4CLsY n?
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while(!bStop) hi!`9k
{ %dc3z"u
write_nPos(); 3?Lgtkb8
Utility.sleep(500); wzd`l?o,
breakWhile = true; Ejv%,q/T(
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for(int i=0;i<nStartPos.length;i++) ;J]25j]]
{ w!\3ICB
if(!fileSplitterFetch.bDownOver) TXjloGv^
{ _K'7(d0z
breakWhile = false; JBz}|MD
break; 9RH"d[%yc}
} BWh}^3?l
} :}Ok$^5s
if(breakWhile) s.VA!@F5
break; K1OkZ6kl
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//count++; yG\UW&P
//if(count>4) 1]T|6N?
// siteStop(); /%!~x[BeJ>
} e'34Pw!m
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System.err.println("文件下载结束!"); V>Fesm"aq
} %t*[T
catch(Exception e){e.printStackTrace ();} ~h!
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} GX
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//获得文件长度 =s;M]:
public long getFileSize() 4J5pXlzV
{ [[WF0q
int nFileLength = -1; !;v.>.lw
try{ OUI6
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URL url = new URL(siteInfoBean.getSSiteURL()); g\Ak;03n
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 9C/MRmv`
httpConnection.setRequestProperty("User-Agent","NetFox"); v>H=,.`0\
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int responseCode=httpConnection.getResponseCode(); )o{aeV
if(responseCode>=400) m2xBS!fm
{ io.]'">
processErrorCode(responseCode); .IgRY\?Q
return -2; //-2 represent access is error 0}]SUe^
} 'H|~u&?
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String sHeader; 5dl,co{q
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for(int i=1;;i++) $'{=R 45Z
{ jnJZ#=)
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); :U'Cor
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//Utility.log(in.readLine()); e)@3m.
sHeader=httpConnection.getHeaderFieldKey(i); /:Lu_)5
if(sHeader!=null) 7O)" `
{ &eQJfc\a
if(sHeader.equals("Content-Length")) \S4SI
{ Xgat-cy'DA
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); z)-c#F@%
break; s_[VHPN
} =lp1Z>
} eg<pa'Hw
else Zb_apjg[4
break; =:=/Gz1
} `s"d]/85VW
} d
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catch(IOException e){e.printStackTrace ();} g`0moXz
catch(Exception e){e.printStackTrace ();} n lGHT
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Utility.log(nFileLength); wRvb8F0
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return nFileLength; +v7) 1y
} [
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//保存下载信息(文件指针位置) ldqLM
private void write_nPos() FwG!>
{ !%)]56(
try{ 2g-` ]Vqb
output = new DataOutputStream(new FileOutputStream(tmpFile)); ny*i+4Mb
output.writeInt(nStartPos.length); !*{q^IO9v&
for(int i=0;i<nStartPos.length;i++) =(o']ZaaA
{ }m-"8\_D
// output.writeLong(nPos); IG ~`i I
output.writeLong(fileSplitterFetch.nStartPos); nZk+
output.writeLong(fileSplitterFetch.nEndPos); ;9a 6pz<
} `]i
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output.close(); %*}Y6tl '|
} vB0RKk}d5
catch(IOException e){e.printStackTrace ();} L] %l51U
catch(Exception e){e.printStackTrace ();} `3 cCH
} uLR<FpM
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//读取保存的下载信息(文件指针位置) pG3k
private void read_nPos() g>JLDQdc
{ ;i<jhNA
try{ j5$GFi\kB
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); o\VUD
int nCount = input.readInt(); (s<s@`
nStartPos = new long[nCount]; N2C7[z+l`
nEndPos = new long[nCount]; hz:pbes
for(int i=0;i<nStartPos.length;i++) U/ od~29
{ fmX!6Kv
nStartPos = input.readLong(); r6Aneg7
nEndPos = input.readLong(); Yk!/ow@.
} 0RFRbi@n(
input.close(); a_~=#]a
} k[j90C5
catch(IOException e){e.printStackTrace ();} U8$4
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catch(Exception e){e.printStackTrace ();} Mkxi~p%<r
} WKfkKk;G
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private void processErrorCode(int nErrorCode) 8^/I>0EZ
{ X}ma]
System.err.println("Error Code : " + nErrorCode); WJH\~<{mP
} !]yO^Ob.E
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//停止文件下载 n2B){~vE
public void siteStop() ypOLp SYk
{ kYzKU2T\W
bStop = true; >Gml4vGK
for(int i=0;i<nStartPos.length;i++) %QmxA
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fileSplitterFetch.splitterStop(); i%m"@7.kk
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} s$ENFp7P
} EOj"V'!
//负责部分文件的抓取 \_V-A f{6
**FileSplitterFetch.java /P|fB]p
*/ Fb`a~c~s
package NetFox; <7SpEVQ
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import java.io.*; `.jzuX
import java.net.*; b//B8^Eong
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public class FileSplitterFetch extends Thread { 2Y\
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String sURL; //File URL g[RI.&?
long nStartPos; //File Snippet Start Position i':ydDOOHA
long nEndPos; //File Snippet End Position C?v[Z]t
int nThreadID; //Thread's ID MTg:dR_
boolean bDownOver = false; //Downing is over M>9-=$7
boolean bStop = false; //Stop identical fZ04!R
FileAccessI fileAccessI = null; //File Access interface I-y#Ks1p+
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException -}O1dEn.
{ vE@!{*
this.sURL = sURL; 0.T4{JS#
this.nStartPos = nStart; ?Nf>]|K:Q
this.nEndPos = nEnd; (~CLn;'
nThreadID = id; 5pr"d@.
fileAccessI = new FileAccessI(sName,nStartPos);//定位 +/,icA}PI
} @SZM82qU2z
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public void run() Q_* "SRz
{ 7S/G
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while(nStartPos < nEndPos && !bStop) HEA#bd\
{ ,@1p$n
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try{ (py]LBZ
URL url = new URL(sURL); w0w G-R ?
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Bm&kkx.9P
httpConnection.setRequestProperty("User-Agent","NetFox"); ~|<WHHN(
String sProperty = "bytes="+nStartPos+"-"; \fA{1
httpConnection.setRequestProperty("RANGE",sProperty); bM8If"
Utility.log(sProperty); 7VcmVq}X
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InputStream input = httpConnection.getInputStream(); IDnC<