/* 5vP*oD
**SiteFileFetch.java /6 P()Upe
*/ x5PQ9Bw,
package NetFox; _|6{(
import java.io.*; w,`x(!&
import java.net.*; jr!x)yd
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public class SiteFileFetch extends Thread { +(|T\%$DT
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SiteInfoBean siteInfoBean = null; //文件信息Bean kTC6fNj[
long[] nStartPos; //开始位置 SrHRpxy
long[] nEndPos; //结束位置 ?J<4IvL/
FileSplitterFetch[] fileSplitterFetch; //子线程对象 C'5i>;
long nFileLength; //文件长度 :Z=A,G
boolean bFirst = true; //是否第一次取文件 MWhFNfS8=
boolean bStop = false; //停止标志 IL>Gi`Y&
File tmpFile; //文件下载的临时信息 r ."Dc
DataOutputStream output; //输出到文件的输出流 ~@sx}u
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 26\1tOj Np
public SiteFileFetch(SiteInfoBean bean) throws IOException z
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{ Y%wF;I1x
siteInfoBean = bean; Uyi_B.:`
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); =cRJtn
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); M:C*?;K:
if(tmpFile.exists ()) KZDB \T
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bFirst = false; -4hX-
read_nPos(); /"/$1F%{
} ]@WJ&e/'@
else ,VHvQU
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nStartPos = new long[bean.getNSplitter()]; %A W
nEndPos = new long[bean.getNSplitter()]; #j; &g1
} wF38c]r`\<
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} NTVG'3o
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public void run() '-ACNgNn
{ dks0
//获得文件长度 J-I7K!B
//分割文件 L'['7
//实例FileSplitterFetch dmE-WS
//启动FileSplitterFetch线程 .g4bV5ma3
//等待子线程返回 f#^%\K:YYR
try{ K<|eZhp~
if(bFirst) n|^-qy'w
{ YR[Ii?
nFileLength = getFileSize(); eUBk^C]\
if(nFileLength == -1) 6= 9
{ *(r85lEou)
System.err.println("File Length is not known!"); p]pFZ";70
} ]>`Q"g~0
else if(nFileLength == -2) >:wk.<Z-
{ qtgj"4,:`
System.err.println("File is not access!"); LW,!B.`@
} m'429E]\S
else 1 k H
{ zHu:Ec7
for(int i=0;i<nStartPos.length;i++) BJlF@F#
{
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); J.O;c5wL
} 7dU X(D,?
for(int i=0;i<nEndPos.length-1;i++) B`KpaE]
{ R$w=+%F
nEndPos = nStartPos[i+1]; "pHQ
} Is88+,O
nEndPos[nEndPos.length-1] = nFileLength; t$UFR7XE
} c?z%z&
} LU%g>?m.]
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//启动子线程 Vuz!~kLYIn
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 8K1+ttjm
for(int i=0;i<nStartPos.length;i++) ZY][LU~l8
{ Vxk0oIk`
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1hRC
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), \3Xt\1qN4
nStartPos,nEndPos,i); eL-92]]e
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !0zM@p
fileSplitterFetch.start(); Cf%)W:Q9
} B"{CWH O
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), x&8?/BR
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); KXdls(ROP
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 8(S'g+p
nEndPos = " + nFileLength); -pLb%f0?
// fileSplitterFetch[nPos.length-1].start(); 9K%E+_7b
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//等待子线程结束 !X#=Pt[,
//int count = 0; U>:p`@
//是否结束while循环 A}oR,$D-
boolean breakWhile = false; cvc.-7IO
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while(!bStop) q 2=^l
{ jPbL3"0A&
write_nPos(); U8.DPRa
Utility.sleep(500); 5@Rf]'1B0
breakWhile = true; 0ED(e1K#B
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for(int i=0;i<nStartPos.length;i++) ]bX.w/=
{ b},OCVT?
if(!fileSplitterFetch.bDownOver) &uk?1Z#j
{ W]reQ&<Z
breakWhile = false; eBBh/=Zc
break; 7]
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} B%r)~?6DM
} LR`/pet
if(breakWhile) aP4r6lLv+
break; N(F9vZOs
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//count++; L18Olu
//if(count>4) #<l;YT8
// siteStop(); @n})oAC,
} d)q{s(<;
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System.err.println("文件下载结束!"); bD49$N?>
} u6|7P<HUfb
catch(Exception e){e.printStackTrace ();} ,!Ah+x
} ?K}/b[[0v
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//获得文件长度 F5EKWP
public long getFileSize() b/2t@VlL
{ 6IeHZ)jGj
int nFileLength = -1; ~Uga=&
try{ 'm-s8]-W
URL url = new URL(siteInfoBean.getSSiteURL()); Vwl`A3Y
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); bC"#.e
httpConnection.setRequestProperty("User-Agent","NetFox"); u QCQ$
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int responseCode=httpConnection.getResponseCode(); 5w{_WR6,
if(responseCode>=400) 9I.="b=J)
{ {OB\~$TH
processErrorCode(responseCode); [?]s((A~B
return -2; //-2 represent access is error wn|Sdp
} Q2iu}~
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String sHeader; xNl_Q8Z?R^
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for(int i=1;;i++) &{l?j>|TM
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); _%"/I96'
//Utility.log(in.readLine()); -CxaOZG
sHeader=httpConnection.getHeaderFieldKey(i); )<jj O
if(sHeader!=null) n802!d+Tn
{ }JvyjE
if(sHeader.equals("Content-Length")) ?2DYz"/')
{ <BT}Tv9
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); #O `nQ
break; ~FDJKGK
} P>jlFm
} "TG}aS
else VxaJ[s3PQ&
break; kM@8RAxA
} 2sWM(SN
} 7pr@aA"vgj
catch(IOException e){e.printStackTrace ();} +dIg&}Tr
catch(Exception e){e.printStackTrace ();} lts{<AU~
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Utility.log(nFileLength);
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return nFileLength; ={8ClUV#
} LXfDXXF
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//保存下载信息(文件指针位置) lHr?sMt
private void write_nPos() {n2jAR9nq
{ |)yO]pB:
try{ f~8Xue,l"
output = new DataOutputStream(new FileOutputStream(tmpFile)); >`\~=ivrD
output.writeInt(nStartPos.length); 62a{Ggs{
for(int i=0;i<nStartPos.length;i++) '}]w=2Lf
{ mI?AI7DqK
// output.writeLong(nPos); ZShRE"`
output.writeLong(fileSplitterFetch.nStartPos); t"JfqD E
output.writeLong(fileSplitterFetch.nEndPos); yj"+!g
} OG/R6k.
output.close(); `3\5&B