/* 9-W3}4'e
**SiteFileFetch.java AMw#_8Y
*/ ,qT^e8E+
package NetFox; 5K:'VX
import java.io.*; e9=UTn{!
import java.net.*; vg-Ah6BC{
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public class SiteFileFetch extends Thread { EED0U?
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SiteInfoBean siteInfoBean = null; //文件信息Bean gTS}'w{
long[] nStartPos; //开始位置 @*9c2\"k
long[] nEndPos; //结束位置 YYN'LF#j
FileSplitterFetch[] fileSplitterFetch; //子线程对象 4St-Q]Y _
long nFileLength; //文件长度 BXb=NE
boolean bFirst = true; //是否第一次取文件 A_\`Gj!s%
boolean bStop = false; //停止标志 ;*G';VuT
File tmpFile; //文件下载的临时信息 ;/h&40&
DataOutputStream output; //输出到文件的输出流 &RHZ7T
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _UA|0a!-
public SiteFileFetch(SiteInfoBean bean) throws IOException /V{1Zw=
{ bess
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siteInfoBean = bean; -d. i4X3j
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); O**~ Tj
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); }G)2HTaZ
if(tmpFile.exists ()) U *:ju+)k
{ *N|ak =
bFirst = false; 4;bc!>
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read_nPos(); SDc8\ms
} LPeVr^
else -N'wKT5
{ F%:74.]Y
nStartPos = new long[bean.getNSplitter()]; l*$~Y0
nEndPos = new long[bean.getNSplitter()]; .(&w/jR
} FVxORQI
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} zIA)se
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public void run() | .gE9'"bv
{ ``-pjD(t
//获得文件长度 0j!xv(1
//分割文件 A"O\u=!
//实例FileSplitterFetch K))P
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//启动FileSplitterFetch线程 mKqXB\<
//等待子线程返回 ^;9<7h[l
try{ %L|xmx!c
if(bFirst) 6)PnzeYW
{ R/xT.EQ(N
nFileLength = getFileSize(); js9^~:Tw
if(nFileLength == -1) PfsUe,*
{ I.'/!11>
System.err.println("File Length is not known!"); >WA'/Sl<A<
} m1e Sn |)7
else if(nFileLength == -2) )<f4F!?,A
{ 0R,.
System.err.println("File is not access!"); +c8t~2tuN
} P}^Y"zF2
else XtQwLH+F
{ "D'rsEh
for(int i=0;i<nStartPos.length;i++) ~.4y* &
{ &lgzNC9g%
nStartPos = (long)(i*(nFileLength/nStartPos.length)); }U(bMo@;
} *b_Iby-ZD
for(int i=0;i<nEndPos.length-1;i++) }4T `)
{ 3B='f"G
nEndPos = nStartPos[i+1]; ))dw[Xa
} 1G6 \}El95
nEndPos[nEndPos.length-1] = nFileLength; C+t0Zen
} O')=]6CQ*
} h;#046-7
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//启动子线程 \*&?o51!e
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; $) M2
for(int i=0;i<nStartPos.length;i++) ff7#LeB9
{ !Eg2#a ?
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), &8pGq./lr=
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), !C|Z+w9Y
nStartPos,nEndPos,i); { P,hH~!
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ~;z]
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fileSplitterFetch.start(); M~7Cb>%<
} VC0Tqk
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "UreV
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Ke:WlDf
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", KLW>O_+
nEndPos = " + nFileLength); +_k A&Q(t
// fileSplitterFetch[nPos.length-1].start(); 6"o=`Sq
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//等待子线程结束 gKcBx6G
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//int count = 0; Td|u-9OM
//是否结束while循环 Rc3!u^?u
boolean breakWhile = false; 4x}U+1B
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while(!bStop) MGq\\hLD\-
{ ]R>NmjAI
write_nPos(); _BY+Tfol
Utility.sleep(500); 4Y}Nu
breakWhile = true; z]SEPYq:
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for(int i=0;i<nStartPos.length;i++) nW*cqM%+
{ $)$r
if(!fileSplitterFetch.bDownOver) ^pH8'^n
{ /qJC p![X
breakWhile = false; oc]:Ty
break; Mtv{37k~
} H3*]}=
} V?'p E
if(breakWhile) M>|ZBEK
break; 4F9!3[}qF
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//count++; ^>F[aT
//if(count>4) @C!&lrf3
// siteStop(); NP\mzlI~@
} @"BhKUoV$K
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System.err.println("文件下载结束!"); ~Kt1%&3{a?
} /V{UTMSz
catch(Exception e){e.printStackTrace ();} |pv$],&&:
} gKl9Nkd!R
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//获得文件长度 -b{<VrZ
public long getFileSize() cD6 ^7QF
{ W7'<Jom|?
int nFileLength = -1; ']>9/r#
try{ 8B &EH+
URL url = new URL(siteInfoBean.getSSiteURL()); pDYJLh-C
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); [U",yN]d
httpConnection.setRequestProperty("User-Agent","NetFox"); 343d`FRa}
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int responseCode=httpConnection.getResponseCode(); j'U1lEZm2
if(responseCode>=400) K:jn^JN$
{ i!}6FBZ
processErrorCode(responseCode); Axns
return -2; //-2 represent access is error S<NK!89
} akt7rnt?i
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String sHeader; :H3/+/x
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for(int i=1;;i++) jc )7FE
{ Ky"FL
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ,dTmI{@O
//Utility.log(in.readLine()); V4NQcy?
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sHeader=httpConnection.getHeaderFieldKey(i); 5 ,-8oEUL
if(sHeader!=null) HUD0
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{ $l"%o9ICG
if(sHeader.equals("Content-Length")) =?0v,;F9|
{ !L9OJ1F
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); s5{=lP
break; l*z%Jw
} |u?VlRt
} 1s@QsZ3
else 2/r8%Sq
break; zs Q|LwQ
} ("t'XKP&N
} bA,Zfsr6#
catch(IOException e){e.printStackTrace ();} mi<Q3;m
catch(Exception e){e.printStackTrace ();} X*@ tp,t
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Utility.log(nFileLength); D0xQXC3$`
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return nFileLength; xmcZN3 ){+
} vio>P-2Eho
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//保存下载信息(文件指针位置) v;e8W9M
private void write_nPos() Jg[Ao#,==
{ =/46;844T
try{ vuPNru" 2
output = new DataOutputStream(new FileOutputStream(tmpFile)); X2Z)>
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output.writeInt(nStartPos.length); CUI+@|]%
for(int i=0;i<nStartPos.length;i++) NT*r7_e
{ |K Rt$t
// output.writeLong(nPos); T2<%[AF0
output.writeLong(fileSplitterFetch.nStartPos); :gU5C Um
output.writeLong(fileSplitterFetch.nEndPos); 0GrM:Lh y
} YPI)^ }
output.close(); c**&, aL
} y0mNDze
catch(IOException e){e.printStackTrace ();} RSym9t90t
catch(Exception e){e.printStackTrace ();} UTyV6~
} hk4t #Km
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//读取保存的下载信息(文件指针位置) r)'vn[A
private void read_nPos() |}
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{ \6&Ml]1
try{ `9K5 ;]
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 9m$;C'}Z
int nCount = input.readInt(); <Pt?N2]A|
nStartPos = new long[nCount]; Z)W8Of_
nEndPos = new long[nCount]; )ciP6WzzbI
for(int i=0;i<nStartPos.length;i++) W]ca~%r
{ g) u%?T
nStartPos = input.readLong(); +,>%Yb=EA
nEndPos = input.readLong(); "g^i%
} 7amVnR1f
input.close(); hvw9i7#
} >Dr(%z6CN
catch(IOException e){e.printStackTrace ();} B{j><uxl
catch(Exception e){e.printStackTrace ();} X"r)zCP+t
} EYq?NL='
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private void processErrorCode(int nErrorCode) 8O,\8:I#
{ ^)gyKl:E'
System.err.println("Error Code : " + nErrorCode); wL?Up>fr
}
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//停止文件下载 $gBQ5Wd
public void siteStop() ZiJF.(JS
{ C!5A,| DX
bStop = true; 8~o']B;lJ
for(int i=0;i<nStartPos.length;i++) 7a'yO+7-)
fileSplitterFetch.splitterStop(); C.92FiC
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} ?N<My&E
} ;9T}h2^`B
//负责部分文件的抓取 F(HfXY3
**FileSplitterFetch.java >s{I@#9
*/ D9oNYF-V
package NetFox; &ry*~"xoh
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import java.io.*; !'jq.RawP
import java.net.*; k
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public class FileSplitterFetch extends Thread { }]vUr}Els
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String sURL; //File URL +'?Qph6o,7
long nStartPos; //File Snippet Start Position {q0+PzgP
long nEndPos; //File Snippet End Position u<BU4c/p
int nThreadID; //Thread's ID -&8( MT*
boolean bDownOver = false; //Downing is over nHm}^.B*+
boolean bStop = false; //Stop identical `$6o*g>:
FileAccessI fileAccessI = null; //File Access interface YJ _eE
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException K&|h%4O
{ RehmVkT
this.sURL = sURL; ,&t+D-s<f
this.nStartPos = nStart; !!1?2ine
this.nEndPos = nEnd; V,&%[H [
nThreadID = id; "<ZV'z
fileAccessI = new FileAccessI(sName,nStartPos);//定位 9* )&hhBs,
} dEoIVy _9R
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public void run() RPz[3y
{ ]nTeTW
while(nStartPos < nEndPos && !bStop)
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{ y7,fFUKl
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try{ buGBqx[
URL url = new URL(sURL); u;`]U$Qq9
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); OpUfK4U)
httpConnection.setRequestProperty("User-Agent","NetFox"); Dl;hOHvKk
String sProperty = "bytes="+nStartPos+"-"; 7AqgX0)
httpConnection.setRequestProperty("RANGE",sProperty); JmI%7bH@
Utility.log(sProperty); 7Q .Su
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InputStream input = httpConnection.getInputStream(); kt6x"'"1
//logResponseHead(httpConnection); _\WR3Q!V
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byte[] b = new byte[1024]; 8MJJ w;
int nRead; AjVC{\Ik
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) m!V,W*RNr
{ k"N>pjgd$
nStartPos += fileAccessI.write(b,0,nRead); yE$PLM
//if(nThreadID == 1) %6m/ve
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); uwNJM
} |#TU"$;
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Utility.log("Thread " + nThreadID + " is over!"); -H-U8/W C
bDownOver = true; sl' 4AK~\
//nPos = fileAccessI.write (b,0,nRead); Ln&pe(c
} ;sB=f
catch(Exception e){e.printStackTrace ();} E'QAsU8pP
} -+".ut:R
} 0]DOiA
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//打印回应的头信息 O =Z}DGa+
public void logResponseHead(HttpURLConnection con) .a%6A#<X
{ %F*9D3^h
for(int i=1;;i++) dAI^ P/y%
{ e+[*4)Qfy
String header=con.getHeaderFieldKey(i); 3<xE_ \DR
if(header!=null) BhJ>G%
//responseHeaders.put(header,httpConnection.getHeaderField(header)); VE|:k:};
Utility.log(header+" : "+con.getHeaderField(header)); p _gN}v
else _jQ:9,;
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break; bfxE}>
} "Lp.*o
} ng1E'c]0@
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public void splitterStop() _H+]G"k/r
{ H,7='n7"
bStop = true; "#d$$ 8
} 3lUVDNbZ
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} `Skvqo(5:
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/* aHhLz>H'
**FileAccess.java
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*//文件访问(定位,写) =E-x0sr?
package NetFox; XcJ5KTn
import java.io.*; pS?D~0Nb
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public class FileAccessI implements Serializable{ SoIK<*J
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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 R?wZ\y Ks}
RandomAccessFile oSavedFile; @2Z|\ojJ
long nPos; t^#1=nK
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public FileAccessI() throws IOException yFE0a"0y
{ N8sT?
this("",0); [L%Ltmx
} xQ9t1b|{e
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public FileAccessI(String sName,long nPos) throws IOException WIWo4[(
{ b_+o1Zy`
oSavedFile = new RandomAccessFile(sName,"rw"); 0|GYt nd
this.nPos = nPos; Es=G' au
oSavedFile.seek(nPos); [@K'}\U^+
} H1N@E}> |
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public synchronized int write(byte[] b,int nStart,int nLen) X@~/.H5
{ pSx5ume95"
int n = -1; lxn/97rA
try{ 1hbQ30
oSavedFile.write(b,nStart,nLen);
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n = nLen; 1j2U,_-
}
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catch(IOException e) rJ/HIda
{ VwR\"8r3
e.printStackTrace (); !}=eXDn;A_
} [if(B\&
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return n; `
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} )!(gS,
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/* FBE|pG7
**SiteInfoBean.java +Xg:*b9So
*/ c!@|yE,
package NetFox; x8lBpr
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public class SiteInfoBean { A!Tl
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private String sSiteURL; //Site's URL g}~s"Sz
private String sFilePath; //Saved File's Path bK "I9T #
private String sFileName; //Saved File's Name DY`0 `T
private int nSplitter; //Count of Splited Downloading File 3]S*p ErY
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public SiteInfoBean() 6jpzyf=~
{//nSplitter的缺省值为5 +[}y`
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//default value of nSplitter is 5 @<K<"`~H
this("","","",5);
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} aG1Fj[,
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) .XgY&5Qk
{ ^E%R5JN
sSiteURL= sURL; -#%M,Qb
sFilePath = sPath; $mxG-'x%K
sFileName = sName; B1X&O d
this.nSplitter = nSpiltter; %)i&|AV"
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} zd_N' :6
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public String getSSiteURL() |X{j^JP5
{ C.4(8~Y=~
return sSiteURL; 6$#,$a O
} |kmP#`P~
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public void setSSiteURL(String value) H@- GYX"4
{ QXj #Brp
sSiteURL = value; ~{DJ,(N"n
} {"jtR<{)
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public String getSFilePath() a[;L+
{ N5 sR
return sFilePath; AXcmN
} pI f6RwH}%
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public void setSFilePath(String value) 54{E&QvL8o
{ UR'v;V&Cb\
sFilePath = value; koB'Zp/FaY
} *v#V%_ o
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public String getSFileName() bV:<%l]
{ b\^DQZmth
return sFileName; RH,x);J|
} -[!t=qi
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public void setSFileName(String value) &y0Gdzf