/* fB|rW~!v
**SiteFileFetch.java ZGf R:a)wc
*/ v1<3y~'f
package NetFox; M%5qx,JQY
import java.io.*; nAG2!2_8
import java.net.*; R2yiExw<
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public class SiteFileFetch extends Thread { i[sHPEml(5
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SiteInfoBean siteInfoBean = null; //文件信息Bean ='a[(C&Y
long[] nStartPos; //开始位置 e<6fe-g9;
long[] nEndPos; //结束位置 <xOXuve
FileSplitterFetch[] fileSplitterFetch; //子线程对象 x
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long nFileLength; //文件长度 ,<0R'R
boolean bFirst = true; //是否第一次取文件 XT>
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boolean bStop = false; //停止标志 _so\h.lt
File tmpFile; //文件下载的临时信息 v8W .84e-
DataOutputStream output; //输出到文件的输出流 ~cQ./G4
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) x;dyF_*;
public SiteFileFetch(SiteInfoBean bean) throws IOException ?8X;F"Ba
{ .;)7)%
siteInfoBean = bean; W0J d2 *]
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); XdjM/hB{fD
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 0sM{yGu=,
if(tmpFile.exists ()) ER<LP@3k
{ G?)NDRM
bFirst = false; l8 k@.<nCO
read_nPos(); t Sran
} 9`]Gosz
else 0+%{1JkJq
{ q">lP(t
nStartPos = new long[bean.getNSplitter()]; *UhYX)J
nEndPos = new long[bean.getNSplitter()]; uOUgU$%zqH
} s9+Rq*Qd
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} 8Y?zxmwn]
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public void run() o|O730"2F
{ _b|mSo,{Y
//获得文件长度 j>Wb$p6S
//分割文件 cu*8,*FU
//实例FileSplitterFetch
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//启动FileSplitterFetch线程 A?V}$PTlx
//等待子线程返回 6U~AKq"+f
try{ E7X6Shng
if(bFirst) 9"hH2jc
{ "TEF
nFileLength = getFileSize(); >>/|Q:
if(nFileLength == -1) Yci>'$tQ
{ 'Dw+k;RH
System.err.println("File Length is not known!"); F3+
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} 2*;qr|h,
else if(nFileLength == -2) $2uk;&"?A=
{ qg1s]c~0u
System.err.println("File is not access!"); Y1fcp_]m
} "g27|e?y
else zGgPW
{ z,dh?%H>X
for(int i=0;i<nStartPos.length;i++) hS&3D6Gt
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); #$W02L8
} 0T,uH
for(int i=0;i<nEndPos.length-1;i++) ZD!?mR+-
{ q_iPWmf
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nEndPos = nStartPos[i+1]; X)7_@,7
} kq|(t{@Rp
nEndPos[nEndPos.length-1] = nFileLength; :Ywb
} 8LuM eGs
} >}<1
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//启动子线程 R
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; iB4`w\-o
for(int i=0;i<nStartPos.length;i++) x6yYx_
{ NzS(,F
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), p GZiADT
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ZtHTl\z
nStartPos,nEndPos,i); ?
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); u7||]|2
fileSplitterFetch.start(); PY81MTv0;
} 9u[^9tL+D
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), k-it#'ll{x
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); \jA#RF.W
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", RW"QUT
nEndPos = " + nFileLength); 7slpj8
// fileSplitterFetch[nPos.length-1].start(); Cp"a,% b6u
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//等待子线程结束 ,f*Q3 S/I
//int count = 0; ZZ'5BfI"I%
//是否结束while循环 lo!^h]iE !
boolean breakWhile = false; +G:CR,Z>+
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while(!bStop) s#Ayl]8r
{ p"@[2hK
write_nPos(); f4'WT
Utility.sleep(500); &|9K~#LVS
breakWhile = true; e|-&h `[
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for(int i=0;i<nStartPos.length;i++) h~EGRg
{ '[WVP=M<XV
if(!fileSplitterFetch.bDownOver) J2ZV\8t
{ ohU}ST:9
breakWhile = false; '`s+e#rs4{
break; r>ziQq8C&
} X!xmto
} XoNBq9Iu
if(breakWhile) 216=7O2F
break; L;GkG! g
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//count++; %T6
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//if(count>4) gpw,bV
// siteStop(); OLS/3c
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} X
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System.err.println("文件下载结束!"); C'7DG\pr
} r'(*#
catch(Exception e){e.printStackTrace ();} kqkTz_r|H
} Gf=3h4
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//获得文件长度 gNHS:k\"
public long getFileSize() @}\i`H1s
{ W1Vy5V|M
int nFileLength = -1; ;Zm-B]\
try{ h6b(FTC^
URL url = new URL(siteInfoBean.getSSiteURL()); G^|!'V
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); vf5q8/a
httpConnection.setRequestProperty("User-Agent","NetFox"); baoyU#X9
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int responseCode=httpConnection.getResponseCode(); xp? YM35
if(responseCode>=400) ^c<8|lK L@
{ {E[t(Ig
processErrorCode(responseCode); j7BLMTF3v
return -2; //-2 represent access is error VUi> ]v/e
} \,xa_zeO
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String sHeader; t6uYFxE
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for(int i=1;;i++) A.vf)hO
{ PI.Zd1r
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Z;<:=#
//Utility.log(in.readLine()); KKq%'y)u^
sHeader=httpConnection.getHeaderFieldKey(i); $cWt^B'
if(sHeader!=null) %*NED zy
{ -7KoR}Ck!
if(sHeader.equals("Content-Length")) .?vHoNvo
{
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 9}wI@
break; a&2UDl% K
} [vY#9W"!
} 5Gs>rq" #
else [D+,I1u2h
break; fG d1
} 8@[S,[
} RFLfvD<
catch(IOException e){e.printStackTrace ();} R<
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catch(Exception e){e.printStackTrace ();} <+-=j
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Utility.log(nFileLength); mlxtey6H3
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return nFileLength; +_L]d6
} iZLy#5(St
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//保存下载信息(文件指针位置) l$Vy\CfK3n
private void write_nPos() A%2B3@1'q
{ HC}vO0X4
try{ =;4K5l{c
output = new DataOutputStream(new FileOutputStream(tmpFile)); 1c{m
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output.writeInt(nStartPos.length); 5E]iv^q%
for(int i=0;i<nStartPos.length;i++) p+8o'dl8=
{ @ta:9wZ
// output.writeLong(nPos); :%z#s
output.writeLong(fileSplitterFetch.nStartPos); zYP6m3n
output.writeLong(fileSplitterFetch.nEndPos); \FUMfo^
} 6J\ 2=c`
output.close(); }L(ZLt8Q
} \WBO(,]V
catch(IOException e){e.printStackTrace ();} Y=4
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catch(Exception e){e.printStackTrace ();} tz8fZ*n
} 8k3y"239t
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//读取保存的下载信息(文件指针位置) S6}_N/;6~
private void read_nPos() '}9 Nvr)+
{ 7H09\g&
try{ c:e3hJ
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); PZQAlO,
int nCount = input.readInt(); (uDAdE5
nStartPos = new long[nCount]; |gWA'O0S
nEndPos = new long[nCount]; X0iy
for(int i=0;i<nStartPos.length;i++) !uoT8BBAk
{ oN[}i6^,e
nStartPos = input.readLong(); ]tXIe?>9
nEndPos = input.readLong(); `<|tC#<z
} 2*<Zc|uNW
input.close();
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} "-djA, `
catch(IOException e){e.printStackTrace ();} Pro?xY$E)
catch(Exception e){e.printStackTrace ();} %.hJDX\j
} up+0-!AH
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private void processErrorCode(int nErrorCode) PJ;WNo8
{ 5+11J[~{
System.err.println("Error Code : " + nErrorCode); 7)]boW~Q
} AmHj\NX$
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//停止文件下载 sQ340!
public void siteStop() aoZ |@x
{ g<(!>:h
bStop = true; 0VcHz$
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for(int i=0;i<nStartPos.length;i++) "b~C/-W I
fileSplitterFetch.splitterStop(); }A+ncabm
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} \c<;!vkZ04
} rH!sImz,
//负责部分文件的抓取 V]; i$
**FileSplitterFetch.java }2@Z{5sh)
*/ |,@D<
package NetFox; zzhZ1;\
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import java.io.*; R;!@
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import java.net.*; \HbZ~I-
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public class FileSplitterFetch extends Thread { .n1&Jsey
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String sURL; //File URL ]}PXN1(
long nStartPos; //File Snippet Start Position pH mqwB~|
long nEndPos; //File Snippet End Position ;YR/7
int nThreadID; //Thread's ID Gn=b_!
boolean bDownOver = false; //Downing is over
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boolean bStop = false; //Stop identical _,!0_\+i
FileAccessI fileAccessI = null; //File Access interface e2v`
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ~1D^C |%
{ 9c[X[Qc
this.sURL = sURL; W,NqevXo:
this.nStartPos = nStart; 6`O,mpPu4G
this.nEndPos = nEnd; L&DjNu`!9
nThreadID = id; Sc]K-]1(H
fileAccessI = new FileAccessI(sName,nStartPos);//定位 iq*im$9J
} F$)l8}
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public void run() ~*7$aj
{ E+i*u
while(nStartPos < nEndPos && !bStop) z'm}p
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