/* 5yO6szg
**SiteFileFetch.java k|,pj^
*/ @#}9?>UV
package NetFox; H>[1DH#b
import java.io.*; 0sRby!
import java.net.*; 4?X#d)L(
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public class SiteFileFetch extends Thread { |*7uF<ink6
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SiteInfoBean siteInfoBean = null; //文件信息Bean !Ljs9 =UF
long[] nStartPos; //开始位置 X|H%jdta
long[] nEndPos; //结束位置 su(y*187A
FileSplitterFetch[] fileSplitterFetch; //子线程对象 I -i)D
long nFileLength; //文件长度 })Rmu."\
boolean bFirst = true; //是否第一次取文件 _`L,}=um'
boolean bStop = false; //停止标志 ?^us(o7-
File tmpFile; //文件下载的临时信息 bv>;%TF
DataOutputStream output; //输出到文件的输出流 pFGK-J
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) S'HM|&
public SiteFileFetch(SiteInfoBean bean) throws IOException O9]j$,i
{ _$By c(.c
siteInfoBean = bean; > >wbyj8
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ;"&^ckP
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); fM_aDSRa!H
if(tmpFile.exists ())
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{ fEdQR->
bFirst = false; \0Zm3[
read_nPos(); n6[bF"v
} r^&{0c&o
else rSB"0W7
{ Ywt_h;:
nStartPos = new long[bean.getNSplitter()]; mUzNrkG(G
nEndPos = new long[bean.getNSplitter()]; 7[QU
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} S)z
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public void run() )ye[R^!}
{ ^DVr>u
//获得文件长度 //:.k#}~B
//分割文件 h/`OG>./
//实例FileSplitterFetch Oe^3YOR#j{
//启动FileSplitterFetch线程 g||{Qmr=1
//等待子线程返回
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try{ ?b:J6(-
if(bFirst) {.z2n>1J{T
{ AShJtxxa
nFileLength = getFileSize(); |t|+pBB
if(nFileLength == -1) z['>`Kt
{ 8^$}!9B~JZ
System.err.println("File Length is not known!"); ];^A8?
} ;or(:Yoc-
else if(nFileLength == -2) `Ten2(D
{ 1okL]VrI
System.err.println("File is not access!"); abWmPi
} N6$pOQ
else oGly|L>
{ |h*H;@$
for(int i=0;i<nStartPos.length;i++) (}"r 5
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); xg'z_W
} ME1lQ7E4B
for(int i=0;i<nEndPos.length-1;i++) iquB]z'
{ "a-Ex ]
nEndPos = nStartPos[i+1]; jio1#&
} p(%7|'
nEndPos[nEndPos.length-1] = nFileLength; RqXcL,,9
} vd SV6p.d
} 4<70mUnt
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//启动子线程 uezqC=v$h
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; mmAikT#k
for(int i=0;i<nStartPos.length;i++) Vur$t^zE
{ ,`G8U/
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %U)/>Z
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), $91c9z;f^
nStartPos,nEndPos,i); D.j'n-yw
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); p<'#f,o
fileSplitterFetch.start(); RhnSQe
} m7^aa@^m
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), z;GnQfYG
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); $=4T# W=m
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", nu}$wLM
nEndPos = " + nFileLength); PNd]Xmv)
// fileSplitterFetch[nPos.length-1].start(); O!lZ%j@%
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//等待子线程结束 +e`f|OQ
//int count = 0; Iu jly f
//是否结束while循环
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boolean breakWhile = false; jB:$+k|~.
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while(!bStop) :qc@S&v@]
{ U GQ{QH
write_nPos(); {%9)l,
Utility.sleep(500); vmvk
breakWhile = true; m7zen530
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for(int i=0;i<nStartPos.length;i++) U voX\
{ GX&BUP\
if(!fileSplitterFetch.bDownOver) -f#0$Z/0
{ "8&pT^
breakWhile = false; 7!#x-KR~5
break; 0_}OKn)J
} (\, <RC\
} BZ">N
if(breakWhile) @R_a'v-
break; sk\U[#ohH
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//count++; Lz2wOB1Zc+
//if(count>4) EQSOEf[
// siteStop(); ,@tkL!"9q
} iN"kv
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System.err.println("文件下载结束!"); BDNn~aU#m
} P_B#
catch(Exception e){e.printStackTrace ();} 6B)(kPW
} ~.u}v~
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//获得文件长度 !lKO|Y
public long getFileSize() ]iRE^o6
{ bTHKMaGWC
int nFileLength = -1; c$rkbbf~V
try{ dQYb)4ir
URL url = new URL(siteInfoBean.getSSiteURL()); ^ ~:f02[D
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); wdS^`nz|
httpConnection.setRequestProperty("User-Agent","NetFox"); );_g2=:#
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int responseCode=httpConnection.getResponseCode(); O%H_._#N`
if(responseCode>=400) l)[\TD
{ n1 =B
processErrorCode(responseCode); T1m"1Q
return -2; //-2 represent access is error QM2Y?."#
} n .ZLR=P4
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String sHeader; E0'+]"B
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for(int i=1;;i++) L3JFQc/oh~
{ Yz=(zj
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); rdhK&5x*
//Utility.log(in.readLine()); onRxe\?D(
sHeader=httpConnection.getHeaderFieldKey(i); _Db=I3.HJ
if(sHeader!=null) CL.JalR`b
{ <vJPKQ`=:
if(sHeader.equals("Content-Length")) K*&M:u6E
{ seC]=UJh#>
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); eqU2>bIf
break; 0vuL(W8)
} RbzSQr>a\
} I|9(*tq)
else G#gUd'=M
break; lYmqFd~p
} -$**/~0zU
} @X4Ur+d
catch(IOException e){e.printStackTrace ();} AD#]PSB
catch(Exception e){e.printStackTrace ();} V>ML-s9
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Utility.log(nFileLength); gKeqf-UWKJ
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return nFileLength; M(|Qvh{Q6
} v".q578
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//保存下载信息(文件指针位置) T]Z|Wq`bot
private void write_nPos() s:3 altv
{ #"-?+F=rk
try{ 5Ds/^fA
output = new DataOutputStream(new FileOutputStream(tmpFile)); 0D/u`-
output.writeInt(nStartPos.length); (|)`~z
for(int i=0;i<nStartPos.length;i++) c[\ :^w^I6
{ 4YDK`:4I~
// output.writeLong(nPos); ~XN--4%Q
output.writeLong(fileSplitterFetch.nStartPos); =}>wxO
output.writeLong(fileSplitterFetch.nEndPos); uPKq<hBI
} <_$]!Z6UR
output.close(); ?j;e/r.
} (MhC83|?
catch(IOException e){e.printStackTrace ();} &IsQgS7R
catch(Exception e){e.printStackTrace ();} =M'M/vKD
} PLU8:H@X
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//读取保存的下载信息(文件指针位置) A'r 3%mC
private void read_nPos() E9z^# @s
{ =y-L'z&r
try{ M4
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Cw42bO
int nCount = input.readInt(); 7K.&zn
nStartPos = new long[nCount]; J!5BH2bg
nEndPos = new long[nCount]; %|E'cdvkX
for(int i=0;i<nStartPos.length;i++) _Z?{&k
{ @)PA9P |
nStartPos = input.readLong();
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nEndPos = input.readLong(); =sy>_
} 56gpAc
input.close(); U"$Q$ OFs
} Ck;O59A"&-
catch(IOException e){e.printStackTrace ();} 7?Q@Hj(:NT
catch(Exception e){e.printStackTrace ();} o#3?")>|
} y_EkW
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private void processErrorCode(int nErrorCode) VH[r@Pn
{ BCsz8U!
System.err.println("Error Code : " + nErrorCode); MJNY#v3
} d]1%/$v^
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//停止文件下载 AQn>K{M
public void siteStop() :*bv(~FW
{ %x@
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bStop = true; >dKK [E/[d
for(int i=0;i<nStartPos.length;i++) b ~DtaGh
fileSplitterFetch.splitterStop(); [
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} ^kZfE"iE2
} "<o[X ?u
//负责部分文件的抓取 M
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**FileSplitterFetch.java +Go(yS
*/ 2VmQ%y6e"
package NetFox; =B4,H=7Spf
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import java.io.*; VD[x}8ei
import java.net.*; <!b~7sZkTc
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public class FileSplitterFetch extends Thread { fxfzi{}uj
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String sURL; //File URL u8ofgcFYE
long nStartPos; //File Snippet Start Position ^0"^Xk*
long nEndPos; //File Snippet End Position T}} 0hs;
int nThreadID; //Thread's ID N]n]7(e+0C
boolean bDownOver = false; //Downing is over i9Fg
boolean bStop = false; //Stop identical Q'-V\G)11
FileAccessI fileAccessI = null; //File Access interface VBc[(8o
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Eu/~4:XN
{ 6k6M&a
this.sURL = sURL; / hUuQDJ
this.nStartPos = nStart; 5G .Fi21
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this.nEndPos = nEnd; Bz}Dgbb
nThreadID = id; 5
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 C${{&$&