/* 7b2N'^z}
**SiteFileFetch.java ZR3x;$I~4
*/ C<.t'|
package NetFox; 7b_Ihv
import java.io.*; qR~s&SC#
import java.net.*; TT429
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public class SiteFileFetch extends Thread { !Z7
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SiteInfoBean siteInfoBean = null; //文件信息Bean VK+#!!Ha
long[] nStartPos; //开始位置 z^/aJ@gQ
long[] nEndPos; //结束位置 >Hr0ScmN@"
FileSplitterFetch[] fileSplitterFetch; //子线程对象 (YjY=F
long nFileLength; //文件长度 Uv6#d":f;
boolean bFirst = true; //是否第一次取文件 W`C&$v#
boolean bStop = false; //停止标志 a$c7d~p$I
File tmpFile; //文件下载的临时信息 ^ ,Bxq^'D
DataOutputStream output; //输出到文件的输出流 &/7AW(?
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ba?]eK
public SiteFileFetch(SiteInfoBean bean) throws IOException 13]sZ([B%|
{ vXnTPjbE
siteInfoBean = bean; ;X u&['
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); )T6+}
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ,/\%-u?
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if(tmpFile.exists ()) |5}{4k~9J
{ A$RN7#
bFirst = false; BZqb
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read_nPos(); FU0&EO
} lqOv_q
else %}G:R!4 d
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nStartPos = new long[bean.getNSplitter()]; %S22[;v{N
nEndPos = new long[bean.getNSplitter()]; G!uQ|<(
} G }<q
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} ,vQkvuz
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public void run() :L9\`&}FS
{ (jkjj7a
//获得文件长度 {M]m cRB(
//分割文件 l\5}\9yS
//实例FileSplitterFetch 5I{YsM
//启动FileSplitterFetch线程 o([+Pp
//等待子线程返回 LiJ;A*
try{ io:?JnQSA
if(bFirst) il-v>GJU7{
{ T7n;Bf
nFileLength = getFileSize(); K/Axojo
if(nFileLength == -1) G7C9FV bR
{ +v&+8S`+
System.err.println("File Length is not known!"); R+Ke|C
} l\5qa_{z
else if(nFileLength == -2) Arz>
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{ n$}c+1
System.err.println("File is not access!"); a2iaP
} jHB,r^:'
else bdqo2ZO
{ lN 1 T\
for(int i=0;i<nStartPos.length;i++) D?]aYCT
{ hGF:D#jyT
nStartPos = (long)(i*(nFileLength/nStartPos.length)); lXm]1
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for(int i=0;i<nEndPos.length-1;i++) xJ%b<y{@
{ z]\0]i
nEndPos = nStartPos[i+1]; lbg!B4,
} x!!:jL'L
nEndPos[nEndPos.length-1] = nFileLength; 6ssZg@}nf{
} (XT^<#Ga
} VX&KGG.6
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//启动子线程 +S|y)W8
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; E](Ood
for(int i=0;i<nStartPos.length;i++) w0moC9#$?
{ ep[7#\}5
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =g/K>B
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), !e.@Xk.P6
nStartPos,nEndPos,i); j/wNPB/NM
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); nb22bXt
fileSplitterFetch.start(); n7X3aoVV
} ?mRU9VY
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), IcPIOCmOc
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); $9*Xfb/
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", L3X>v3CZ5
nEndPos = " + nFileLength); ykl./uY'
// fileSplitterFetch[nPos.length-1].start(); 1NN99^q
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//等待子线程结束 N+!{Bt*
//int count = 0; {:od=\*R
//是否结束while循环 8!me$k&
boolean breakWhile = false; D4n~2]
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while(!bStop) ;{BELv-4
{ lGjmw"/C
write_nPos(); Hc^b}A y7
Utility.sleep(500); lh~!cOm\=E
breakWhile = true; 7u\^$25+h
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for(int i=0;i<nStartPos.length;i++) .yQDW]q81G
{ InNuK0@
if(!fileSplitterFetch.bDownOver) uGc}^a2
{ 04:^<n+{
breakWhile = false; K!HSQ,AC
break; 69r<Z
} \|DcWH1
} 292e0cE
if(breakWhile) -`iZBC50
break;
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//count++; mWUQF"q8
//if(count>4) yWFDGk
// siteStop(); cL<
} lkFv5^%
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System.err.println("文件下载结束!"); Po(9BRd7
} gAgzM?A1(
catch(Exception e){e.printStackTrace ();} noOG$P#
} @\z2FJ79w
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//获得文件长度 l>7`D3
public long getFileSize() e<9IwS!/
{ <.s[x~b\`
int nFileLength = -1; vDv:3qN7(
try{ a0CmCv2#
URL url = new URL(siteInfoBean.getSSiteURL()); ArbfA~jXB
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); cZZ-K?_
httpConnection.setRequestProperty("User-Agent","NetFox"); FuLP{]Y+AM
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int responseCode=httpConnection.getResponseCode(); wC`])z}bT
if(responseCode>=400) -fT]}T6=
{ k[gO>UGB;
processErrorCode(responseCode); l`~*"4|/
return -2; //-2 represent access is error mcpM<vY/H
} c3Y\XzV3v
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String sHeader; ^6Hfq^ejt
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for(int i=1;;i++) N'i%9SBcg
{ a 5:YP
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); o[O-|XL_
//Utility.log(in.readLine()); F%+/j5~^
sHeader=httpConnection.getHeaderFieldKey(i); 37 T<LU
if(sHeader!=null) >j|.pi
{ 9`$fU)K[Pl
if(sHeader.equals("Content-Length")) go@UE2qw
{ ,L6d~>=41
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); g"FG7E&
break; /3L1Un*
} #dtYa
} JC_Y#kN@z
else tTLD6#
break; ;Bat!K7W
} C*,-lk0b@
} tUDOL-Tv
catch(IOException e){e.printStackTrace ();} Og Y4J|<
catch(Exception e){e.printStackTrace ();} m3+MRy5
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Utility.log(nFileLength); B=jJ+R
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return nFileLength; kBS;SDl)
} C;1A$]bk
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//保存下载信息(文件指针位置) 2+s_*zM-
private void write_nPos() )~rfx
{ |ITp$_S
try{ 4askQV &hj
output = new DataOutputStream(new FileOutputStream(tmpFile)); "
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output.writeInt(nStartPos.length); <IC=x(T
for(int i=0;i<nStartPos.length;i++) 26G2. /**<
{ SsIy ;l
// output.writeLong(nPos); 1y2D]h /'
output.writeLong(fileSplitterFetch.nStartPos); {Uz@`QO3
output.writeLong(fileSplitterFetch.nEndPos); 9gZMfP
} JN .\{ Y
output.close(); /!=uM.
} TUw^KSa
catch(IOException e){e.printStackTrace ();} u}\F9~W-{
catch(Exception e){e.printStackTrace ();} }/nbv;)
} X};m \Bz
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//读取保存的下载信息(文件指针位置) j&6,%s-M`a
private void read_nPos() mSp-
{ *`mPPts}
try{ zH0%;
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); yM}}mypS
int nCount = input.readInt(); $3[IlQ?
nStartPos = new long[nCount]; WS/^WxRY
nEndPos = new long[nCount]; *p`0dvXG2
for(int i=0;i<nStartPos.length;i++) +iz5%Qe<f
{ 5Q#;4
nStartPos = input.readLong(); Kfa7}f_
nEndPos = input.readLong(); Wb+^Ue
} #=V%S
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input.close(); +dX1`%RR[
} 6}='/d-[
catch(IOException e){e.printStackTrace ();} K_{f6c<
catch(Exception e){e.printStackTrace ();} 4v_?i@,L
} m2E$[g
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private void processErrorCode(int nErrorCode) %6+J]U
{ orVsMT[A
System.err.println("Error Code : " + nErrorCode); }zY)H9J~
} #s$b\"4
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//停止文件下载 3~z4#8=
public void siteStop() L>5VnzS I
{ g]EDL<b
bStop = true; l TY%,s
for(int i=0;i<nStartPos.length;i++) +c.A|!-
fileSplitterFetch.splitterStop(); l=8)_z;~D
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} l+Dl~o}
} #4%4iR5%
//负责部分文件的抓取 ,],"tzKtE
**FileSplitterFetch.java K QXw~g?
*/ 8
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package NetFox; '(mJ*Eb
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import java.io.*; l>`N+ pZ$
import java.net.*; R $HIJM
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public class FileSplitterFetch extends Thread { }YW0?-G.$
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String sURL; //File URL A ${b]
long nStartPos; //File Snippet Start Position kq6S`~J^R
long nEndPos; //File Snippet End Position @[#U_T- I
int nThreadID; //Thread's ID !8yw!hA
boolean bDownOver = false; //Downing is over .F:qJ6E
boolean bStop = false; //Stop identical b#bdz1@s
FileAccessI fileAccessI = null; //File Access interface iDt^4=`
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException %lNv?sWb
{ _I8L#4\(=
this.sURL = sURL; W7>4-gk
this.nStartPos = nStart; sP$bp Z}
this.nEndPos = nEnd; W.iL!x.B@
nThreadID = id; R#i|n<x
fileAccessI = new FileAccessI(sName,nStartPos);//定位 0@d )DLM?
} xx0s`5
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public void run() A`Q'I$fj
{ '\\dh
while(nStartPos < nEndPos && !bStop) ";E Mu(IXb
{
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try{ Nr=ud QA{
URL url = new URL(sURL); ;v'7l>w3\w
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); .CdaOWM7
httpConnection.setRequestProperty("User-Agent","NetFox"); 4J0{$Xuu0
String sProperty = "bytes="+nStartPos+"-"; mE(EyB<
httpConnection.setRequestProperty("RANGE",sProperty); Y$b4Ga9j
Utility.log(sProperty); Zs<}{`-
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InputStream input = httpConnection.getInputStream(); <8Ek-aNNt
//logResponseHead(httpConnection); xy>wA
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byte[] b = new byte[1024]; s,m+q)
int nRead; Yq}7x1mm
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) [H;HrwM
s)
{ JIvVbI
nStartPos += fileAccessI.write(b,0,nRead); QLH&WF
//if(nThreadID == 1) :' ?%%P
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); qb(#{Sw0
} @'L/]
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Utility.log("Thread " + nThreadID + " is over!"); {MdxIp[
bDownOver = true; zIt-mU
//nPos = fileAccessI.write (b,0,nRead); U^vQr%ha
} WXu:mv,'e
catch(Exception e){e.printStackTrace ();} eT1b88_
} `}.K@17
} h=SQ]nV{
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//打印回应的头信息 2K<rK(
public void logResponseHead(HttpURLConnection con) i)f3\?,,
{ ]'V8{l
for(int i=1;;i++) )tR5JK} AV
{ F>jPr8&
String header=con.getHeaderFieldKey(i); ~t[ #p:
if(header!=null) 0}Rxe
//responseHeaders.put(header,httpConnection.getHeaderField(header)); \]GO*]CaV
Utility.log(header+" : "+con.getHeaderField(header)); B!GpD@U
else F{)YdqQ
break; +qq,;npi
} 9 tkj:8_
} rHPda?&H
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public void splitterStop() O%5cMz?eU
{ sv\'XarM
bStop = true; |0FRKD]
} t^ LXGQ
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} qJ|ByZ.N+
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/* kB1]_v/
**FileAccess.java :khl}|
*//文件访问(定位,写) )V~Fl$A
package NetFox; .z&V!2zp
import java.io.*; m76**X
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public class FileAccessI implements Serializable{ "Pi\I9M3
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 wGa0w*$
RandomAccessFile oSavedFile; R9&T0Q