/* Dcgo%F-W
**SiteFileFetch.java P/eeC"
*/ -`h)$&,
package NetFox; )qw&%sO +
import java.io.*; CY5Z{qiX
import java.net.*; ITI)soa~
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public class SiteFileFetch extends Thread { U?Zq6_M&
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SiteInfoBean siteInfoBean = null; //文件信息Bean EW OVx*l
long[] nStartPos; //开始位置 <iC(`J$D
long[] nEndPos; //结束位置 j</: WRA`]
FileSplitterFetch[] fileSplitterFetch; //子线程对象 g*_&
long nFileLength; //文件长度 %ntRG!
boolean bFirst = true; //是否第一次取文件 /$?}YL,
boolean bStop = false; //停止标志 Xl#ggub?
File tmpFile; //文件下载的临时信息 A?P_DA
DataOutputStream output; //输出到文件的输出流 r),kDia
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) k="i;! Ge
public SiteFileFetch(SiteInfoBean bean) throws IOException +I|vzz`ZVr
{ KkbD W3-
siteInfoBean = bean; 7Ovi{xd@
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ^jZbo{
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Ow,w$0(D
if(tmpFile.exists ()) [RhO$c$[\
{ |/{=ww8|
bFirst = false; SY\ gXO8k
read_nPos(); ",; H`V
} ~B?y{
else 8cIKvHx
{ Ve; n}mJ?
nStartPos = new long[bean.getNSplitter()]; /
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nEndPos = new long[bean.getNSplitter()]; @qAS*3j
} *^ZV8c}
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} JK5gQ3C[
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public void run() VpDbHAg
{ h*](a_0
//获得文件长度 iqWQ!r^
//分割文件 ggR.4&<
//实例FileSplitterFetch gjD Ho$
//启动FileSplitterFetch线程 HIZe0%WPw
//等待子线程返回 2^nxoye
try{ !Wnb|=j
if(bFirst) 0M[EEw3
{ lRFYx?y
nFileLength = getFileSize(); `d}2O%P
if(nFileLength == -1) ukyZes8o K
{ /*mI<[xb
System.err.println("File Length is not known!"); /h3RmUy
} h S&R(m
else if(nFileLength == -2) +cN8Y}V
{ X
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System.err.println("File is not access!"); 1mG-}
} 2P0*NQ
else s;Q!X ?Q
{ @\#td5'
for(int i=0;i<nStartPos.length;i++) /PIcqg
{ }o`76rDN
nStartPos = (long)(i*(nFileLength/nStartPos.length)); (f"4,b^]
} _q-*7hCQ`
for(int i=0;i<nEndPos.length-1;i++) `b$.%S8uj=
{ !+v$)3u9
nEndPos = nStartPos[i+1]; o>pJPV
} 0 @oJFJrO
nEndPos[nEndPos.length-1] = nFileLength; ud('0r',D
} *$g-:ILRuZ
} uVrd i?3
}.6[qk
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//启动子线程 v.qrz"98-
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; &tj!*k'
for(int i=0;i<nStartPos.length;i++) P&LsVR{#
{ FQ\h4` >B
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), /%^#8<=|U
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 3[*}4}k9
nStartPos,nEndPos,i); H4+i.*T#
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ep{FpB
fileSplitterFetch.start(); ]h5tgi?_l
} eJ-nKkg~a
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), C,4e"yynb
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); fz
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 61U09s%\0
nEndPos = " + nFileLength); .Z *'d
// fileSplitterFetch[nPos.length-1].start(); N;`n@9BF
8Zd]wYO
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//等待子线程结束 0o&5]lEe
//int count = 0; ]D\D~!R
//是否结束while循环 VI*$em O0
boolean breakWhile = false; l*G[!u
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while(!bStop) ;aVZ"~a+\
{ Ig{0Z">
write_nPos(); dSHDWu&
Utility.sleep(500); AA>P`C$&M
breakWhile = true; 2D5StCF$O
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for(int i=0;i<nStartPos.length;i++) ]7A'7p$Y
{ !j-Z Lq:;
if(!fileSplitterFetch.bDownOver) G 01ON0
{ A,!-{/w c
breakWhile = false; &$H!@@09|w
break; =7UsVn#o
} "\yT7?},
} 2GG2jky{/
if(breakWhile) zfdl45
break; VUuE T
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//count++; #GFr`o0$^
//if(count>4) @2i9n
// siteStop(); <:CkgR$/{
} ))Za&S*<
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System.err.println("文件下载结束!"); }x,S%M-
} apn*,7ps65
catch(Exception e){e.printStackTrace ();} 1|:KQl2q
} UPGtj"2v-
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//获得文件长度 :k#HW6p
public long getFileSize() #<xm.
{ ^<6[.)
int nFileLength = -1; gRzxLf`K
try{ VIbq:U
URL url = new URL(siteInfoBean.getSSiteURL()); E{vbO/|kf
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3OB"#Ap8<
httpConnection.setRequestProperty("User-Agent","NetFox"); &7s.`
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int responseCode=httpConnection.getResponseCode(); e|r`/:M
if(responseCode>=400) x?<FJ"8"k
{ MHwIA *R
processErrorCode(responseCode); A@u@ift
return -2; //-2 represent access is error N$tGQ@
} *n!J=yS
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String sHeader; Iga024KR
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for(int i=1;;i++) 0*v2y*2V
{ Gq P5Kx+=
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); $:^td/p J
//Utility.log(in.readLine()); ,#K'PB4 E
sHeader=httpConnection.getHeaderFieldKey(i); [D1Up
if(sHeader!=null) 19] E 5'AI
{ !<h)w#>en
if(sHeader.equals("Content-Length")) xyxy`qR A
{ @(lh%@hO
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 7|H$ /]
break; }QmqoCAE~m
} (h
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} !n%j)`0M
else nr3==21Om4
break; z@j8lv2j1
} H,NF;QPPC
} rT>wg1:
catch(IOException e){e.printStackTrace ();} Alq(QDs
catch(Exception e){e.printStackTrace ();} qxj(p o
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Utility.log(nFileLength); V.2_i*
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return nFileLength; FGkVqZ Y2?
} |l!aB(NW
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//保存下载信息(文件指针位置) D/' dTrR
private void write_nPos() Qg/rRiV
{ 4Po_-4
try{ C9;kpqNG#u
output = new DataOutputStream(new FileOutputStream(tmpFile)); c*M}N?|6
output.writeInt(nStartPos.length); ," ql5Q4
for(int i=0;i<nStartPos.length;i++) "Rl}VeDY
{ K<J9~
// output.writeLong(nPos); DaVa}
output.writeLong(fileSplitterFetch.nStartPos); LIrb6g&xj_
output.writeLong(fileSplitterFetch.nEndPos); !_(Tqyg&
} T]$U""
output.close(); A %-6`>
} `$NP>%J-
catch(IOException e){e.printStackTrace ();} BJ0?kX@
catch(Exception e){e.printStackTrace ();} %|4UsWZ
} Y9|!+,
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//读取保存的下载信息(文件指针位置) wyG;8I
private void read_nPos() yDS4h(^
{ nRY5xRvK
try{ :hA#m[
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ~)'k 9?0
int nCount = input.readInt(); rM"l@3hP
nStartPos = new long[nCount]; c[e}w+uB
nEndPos = new long[nCount]; !&\INl-Z
for(int i=0;i<nStartPos.length;i++) tnIX:6
{ -$@h1Y
nStartPos = input.readLong(); .e5Mnd%$M
nEndPos = input.readLong(); j| Q-*]V
} C7?/%7{
input.close(); et+0FF
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} w#J2 wS
catch(IOException e){e.printStackTrace ();} ?fS9J
catch(Exception e){e.printStackTrace ();} PaN"sf
} ]%(2hY~i
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private void processErrorCode(int nErrorCode) H[|~/0?K
{ ?1".;foZ
System.err.println("Error Code : " + nErrorCode); Dhv3jg;lq
} B1Oq!k
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+}
//停止文件下载 LHmZxi?
public void siteStop() <6=c,y
{ C.QO#b
bStop = true; ~;] d"'
for(int i=0;i<nStartPos.length;i++) mcok/,/
fileSplitterFetch.splitterStop(); "ITIhnE
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} D#z:()VT(
} ze;KhUPRm
//负责部分文件的抓取 -{_PuJ "
**FileSplitterFetch.java ?hM64jI|
*/ j~QwV='S
package NetFox; ,2)6s\]/b
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import java.io.*; }&3~|kP~O
import java.net.*; q,6DEz
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public class FileSplitterFetch extends Thread { {_dvx*M
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String sURL; //File URL 4`R(?
long nStartPos; //File Snippet Start Position RrgGEx
long nEndPos; //File Snippet End Position .[ mRM
int nThreadID; //Thread's ID *9i{,I@
boolean bDownOver = false; //Downing is over KGpA2Nx
boolean bStop = false; //Stop identical ]:\dPw`A
FileAccessI fileAccessI = null; //File Access interface .x1NWGDn
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException jA/w|\d!
{ -!9G0h&i|
this.sURL = sURL; nxHkv`s k
this.nStartPos = nStart; Y4(
this.nEndPos = nEnd; llsfTrp
nThreadID = id; *\q
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 MJrR[h]
} YAmb`CP
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public void run() EZ`{Wnbq
{ RX5dO%
while(nStartPos < nEndPos && !bStop) CWS4lx
{ b_):MQ1{
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try{ V470C@
URL url = new URL(sURL); +t;7tQDVB
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Xs?o{]Fe
httpConnection.setRequestProperty("User-Agent","NetFox"); "wHFN>5B
String sProperty = "bytes="+nStartPos+"-"; 8e|%M
httpConnection.setRequestProperty("RANGE",sProperty); :/Qq@]O>
Utility.log(sProperty); !?gKqx'T$
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InputStream input = httpConnection.getInputStream(); IaXeRq?<
//logResponseHead(httpConnection); fd2T=fz-
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byte[] b = new byte[1024]; 6K<K
int nRead;
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while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) l/awS!Q/nF
{ O8.5}>gDn.
nStartPos += fileAccessI.write(b,0,nRead); "w.3Q96r
//if(nThreadID == 1) &`XVq"7
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ?K\axf>F
} @y&bw9\
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Utility.log("Thread " + nThreadID + " is over!"); IB7E}56l
bDownOver = true; # Vha7
//nPos = fileAccessI.write (b,0,nRead); Qz
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} E\,-XH
catch(Exception e){e.printStackTrace ();} 1y4
} fwf$Co+R:*
} $p?aVO
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//打印回应的头信息 H'hpEwG
public void logResponseHead(HttpURLConnection con) zI<<Q2
{ Z/;aT -N
for(int i=1;;i++) I(0~n,=j
{ iW /}#
String header=con.getHeaderFieldKey(i); 9p2&)kb6
if(header!=null) Q)[C?obd v
//responseHeaders.put(header,httpConnection.getHeaderField(header)); >
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Utility.log(header+" : "+con.getHeaderField(header)); HoL
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else 3kMf!VL
break; FG*r'tC~r
} 7x4PaX(
} t1y4 7fX6
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public void splitterStop() *ppffz
{ \)?HJ
bStop = true; "!%l/_p?
} nQ,HMXj
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} ~O&:C{9=
)/?$3h;
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/* V%
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**FileAccess.java = {wcfhUl+
*//文件访问(定位,写) 8eHyL
package NetFox; s6^ >F/x
import java.io.*; 3x'|]Ns
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public class FileAccessI implements Serializable{ h{HHLR
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ^qD$z=z-
RandomAccessFile oSavedFile; cq/$N
long nPos; 'u |c
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public FileAccessI() throws IOException ByNn
{ 9e,0\J
this("",0); l&Q`wR5e
} h'&%>Q2
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public FileAccessI(String sName,long nPos) throws IOException =w
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{ l#Y,R 0
oSavedFile = new RandomAccessFile(sName,"rw"); orMwAV
this.nPos = nPos; aH/
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oSavedFile.seek(nPos); FSW_<%
} <+vw@M
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public synchronized int write(byte[] b,int nStart,int nLen) F%D.zvKN
{ y''z5['
int n = -1; XBu"-(
try{ &H/'rd0M
oSavedFile.write(b,nStart,nLen); S8j{V5R'
n = nLen; iN8zo:&Z
} M {T-iW"
catch(IOException e) 4-H+vNG{%
{ Cl8Cg~2
e.printStackTrace (); fN^8{w/O
} )g#T9tx2D
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return n; CxO ob1@
} dufu|BL|}
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} EC!02S
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/* 3E $f)
**SiteInfoBean.java a>I+]`g
*/ _
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package NetFox; 'Nnz k
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public class SiteInfoBean { O$j7i:G'5
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private String sSiteURL; //Site's URL PB`Y
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private String sFilePath; //Saved File's Path jrr*!^4|
private String sFileName; //Saved File's Name Mhf5bN|wQ
private int nSplitter; //Count of Splited Downloading File n QZwC
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public SiteInfoBean() `yXg{lk
{//nSplitter的缺省值为5 }DfshZ0QM
//default value of nSplitter is 5 [KaAXv
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this("","","",5); ^-Kf']hU
} V0.vQ/
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) suiS&$-E
{ /dQl)tL
sSiteURL= sURL; sF?TmBQ*
sFilePath = sPath; udUyh%n
sFileName = sName; pVw}g@<M
this.nSplitter = nSpiltter; BmMGx8P
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} FvXZ<(A{
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public String getSSiteURL() 0s3%Kqi[
{ g:D>.lKd
return sSiteURL; -)]Yr #Q
} e~[/i\
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public void setSSiteURL(String value) [-k
{ m^f0V2M_
sSiteURL = value; (%e.:W${
} 2%@4]
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public String getSFilePath() 8Pn#+IvCE
{ mD0f<gJ1
return sFilePath; m=A(NKZ
} M!A}NWF
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public void setSFilePath(String value) RJ ||} 5
{ aS{n8P6vW
sFilePath = value; ;I 9&]
} 6YLj^w] %
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public String getSFileName() nE&