/* JBOU$A~
**SiteFileFetch.java \8\TTkVSq
*/ CH!\uK22
package NetFox; e];IQ|
import java.io.*; _7;G$\^&.
import java.net.*; [N%InsA9k
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public class SiteFileFetch extends Thread { dQ_'8
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SiteInfoBean siteInfoBean = null; //文件信息Bean 2sG1Hox
long[] nStartPos; //开始位置 }uaFmXy3
long[] nEndPos; //结束位置 +jq@!P"}d
FileSplitterFetch[] fileSplitterFetch; //子线程对象 l& sEdEA
long nFileLength; //文件长度 &"T7KXx
boolean bFirst = true; //是否第一次取文件 IIXA)b!
boolean bStop = false; //停止标志
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File tmpFile; //文件下载的临时信息 ?*kB>U9e
DataOutputStream output; //输出到文件的输出流 K%t&aRjS
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) A(BjU:D(Oj
public SiteFileFetch(SiteInfoBean bean) throws IOException ?aBAmyxm
{ [5-IkT0
siteInfoBean = bean; g26_#4 P
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); H|j]uLZ
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); '|v<^EH
if(tmpFile.exists ()) zT/woiyB`
{ $/JXI?K
bFirst = false; P@5-3]m=
read_nPos(); r]QeP{
} jY/(kA]}
else 0v1~#KCm
{ +9t{ovF?L
nStartPos = new long[bean.getNSplitter()]; YbWz!.WPe
nEndPos = new long[bean.getNSplitter()]; N~`r;E
} F>n_k
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} 4z~;4
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public void run() @{3_7
{ GvA4.s,
//获得文件长度 +@8, uL
//分割文件 I3x+pa^]2
//实例FileSplitterFetch /L!
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//启动FileSplitterFetch线程 D( TfW
//等待子线程返回 AOL=;z9c#
try{ >nK (
if(bFirst) RASk=B
{ MOB'rPIUI
nFileLength = getFileSize(); ,1<6=vL
if(nFileLength == -1) OzRo
{ w+!V,lU"^
System.err.println("File Length is not known!"); rXTdhw?+
} "av/a
else if(nFileLength == -2) e9S*^2;
{ ^n4aoj
System.err.println("File is not access!"); wu{%gtx/;^
} xZV|QVY;
else b!"qbC1
{ r<P? F
for(int i=0;i<nStartPos.length;i++) &js$qgY
{ |6Iw\YU
nStartPos = (long)(i*(nFileLength/nStartPos.length)); G2c\"[N1/
} o?.VW/"
for(int i=0;i<nEndPos.length-1;i++) XJS^{=/
{ n36@&q+B&
nEndPos = nStartPos[i+1]; $mf6!p4
} ci 22fw0
nEndPos[nEndPos.length-1] = nFileLength; !@ AnwV]
} F<2gM#jLB
} O0pXHXSAL
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//启动子线程 7s:cg
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; bsI?=lO
for(int i=0;i<nStartPos.length;i++) YVz,P_\(m
{ SST@
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^tjM1uaZ5(
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), =PjdL32
nStartPos,nEndPos,i); >%t5j?p
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); i8R2Y9Q*O
fileSplitterFetch.start(); lqAv
} Nlc3S+$`z
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =G'J@[d{d
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 1mfB6p1Z(
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 'Q*lp!2>
nEndPos = " + nFileLength); C'sA0O@O
// fileSplitterFetch[nPos.length-1].start(); $Nj'_G\}
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//等待子线程结束 Q5Mn=
//int count = 0; Di$++T8"
//是否结束while循环 oMq:4W,
boolean breakWhile = false; [e:ccm
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while(!bStop) *;T HD>
{ i(q a'*
write_nPos(); OG7U+d6
Utility.sleep(500); 9Z3Y, `R,
breakWhile = true; =}SC .E\
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for(int i=0;i<nStartPos.length;i++) 8 }Maj
{ JVPLE*T
if(!fileSplitterFetch.bDownOver) OF!n}.O(
{ :%zA X
breakWhile = false; $f6wmI;<y
break; ~}K$z
} 86Xf6Ea
}
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if(breakWhile) _C$SaQty[Q
break; 79'N/:.
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//count++; <Lq.J`|+
//if(count>4) 9\6ZdnEKu,
// siteStop(); C7
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} Rd1I$| Y
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System.err.println("文件下载结束!"); 0INlo
} M8FC-zFs
catch(Exception e){e.printStackTrace ();} DCSTp2
} `hU2Ss~
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//获得文件长度 z}P1+Pm
public long getFileSize() _w9:([_
{ }_?FmuU
int nFileLength = -1; gBXbB9
try{ z"{Ji{>%=
URL url = new URL(siteInfoBean.getSSiteURL()); r5!Sps3B
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~NwX,-ri
httpConnection.setRequestProperty("User-Agent","NetFox"); )TkXdA?.
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int responseCode=httpConnection.getResponseCode(); 59a7%w
if(responseCode>=400) L' x[wM0w;
{ 0tN/P+!|
processErrorCode(responseCode); p=f8A71
return -2; //-2 represent access is error _^] :tL6
} &8Oy *'
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String sHeader; Ky[-ZQQo=5
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for(int i=1;;i++) e5m-7{h@
{ d@<~u,Mt&F
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); CDRz3Hu U
//Utility.log(in.readLine()); h%%dRi
sHeader=httpConnection.getHeaderFieldKey(i);
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if(sHeader!=null) 0BHSeO,
{ ]}N&I_mU
if(sHeader.equals("Content-Length")) ZG-[Gz
{ ZfWF2%]<
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); X}j_k=, C
break; 0tah$;c
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} }!5+G:JAh
} ]1i1_AR'`
else ':?MFkYC
break; =:7OS>x
} &^b mZj!
} $N17GqoC
catch(IOException e){e.printStackTrace ();} c
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catch(Exception e){e.printStackTrace ();} Bpl(s+
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Utility.log(nFileLength); aECQ(]q
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return nFileLength; ^/v!hq_#%&
} x[eho,6)
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//保存下载信息(文件指针位置) Kx5VR4f`J@
private void write_nPos() PLDp=T%
{ p |xMXoa`
try{ kX:d?*{KB
output = new DataOutputStream(new FileOutputStream(tmpFile)); ugMfpT)
output.writeInt(nStartPos.length); 81/t)Cp
for(int i=0;i<nStartPos.length;i++) %DF-;M"8
{ C\C*'l6d
// output.writeLong(nPos); M}b[;/~
output.writeLong(fileSplitterFetch.nStartPos); Zjkrne{
output.writeLong(fileSplitterFetch.nEndPos); 'hH3d"a^=
} 9..! g:
output.close(); *Z=:?4u
} j= Ebk;6p
catch(IOException e){e.printStackTrace ();} bG[)r
catch(Exception e){e.printStackTrace ();} N\WEp?%~
} j?cE0
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//读取保存的下载信息(文件指针位置) 8X2NEVH]
private void read_nPos() YU24wTe;k
{ h(wu5G0C#u
try{ $
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Wk&g!FR
int nCount = input.readInt(); 9Fv VM9
nStartPos = new long[nCount]; 2 K&5Kt/
nEndPos = new long[nCount]; SLMnEtyTS
for(int i=0;i<nStartPos.length;i++) Hwm]l`E]
{ mtg3}etA
nStartPos = input.readLong(); A +J&(7N
nEndPos = input.readLong(); ` p)$7!
} G^=C#9c.m
input.close(); q+/7v9
} CHX- 4-84{
catch(IOException e){e.printStackTrace ();} 982n G-"
catch(Exception e){e.printStackTrace ();} R#i{eE*WF
} 4!
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private void processErrorCode(int nErrorCode) {E+o+2L
{ !XJS"o wr
System.err.println("Error Code : " + nErrorCode); b )mU9
} \gjYh2>
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//停止文件下载 w-M,@[G
public void siteStop() 8@Kvh|
{ \9GJa"xA`
bStop = true; *D$[@-7
for(int i=0;i<nStartPos.length;i++) 'qT[,iQ
fileSplitterFetch.splitterStop(); 9EqU
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} kX)Xo`^Ys
} 2PrUI;J$
//负责部分文件的抓取 .W)%*~ O!;
**FileSplitterFetch.java &6mXsx$
*/ 5bKm)|4z6
package NetFox; bF
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import java.io.*; I "<ACM
import java.net.*; W~e/3#R\=
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public class FileSplitterFetch extends Thread { O0VbKW0h3
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String sURL; //File URL (s2ke
long nStartPos; //File Snippet Start Position c0%.GcF0{
long nEndPos; //File Snippet End Position `"* ]C
int nThreadID; //Thread's ID ClvqI"Rd
boolean bDownOver = false; //Downing is over L)`SNN\ipR
boolean bStop = false; //Stop identical 93aRWEu3
FileAccessI fileAccessI = null; //File Access interface `/0S]?a.{B
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Rt^~db
{ @1UC9}>
this.sURL = sURL; /)Pf ]
this.nStartPos = nStart; e0ea2
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this.nEndPos = nEnd; 7"c^$fj
nThreadID = id; x&SG gl
fileAccessI = new FileAccessI(sName,nStartPos);//定位 !leLOi2T
} 'nO%1BZj+
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public void run() 3+j!{tJ
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{ a$r<%a6
while(nStartPos < nEndPos && !bStop) B]o5HA<k
{ 2#y!(D8
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try{ I#m0n%-[
URL url = new URL(sURL); XAb!hc
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); >)sB#<e
httpConnection.setRequestProperty("User-Agent","NetFox"); ^-yEb\\i
String sProperty = "bytes="+nStartPos+"-"; 9J0JSy
httpConnection.setRequestProperty("RANGE",sProperty); dfss_}R
Utility.log(sProperty); 4._U
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InputStream input = httpConnection.getInputStream(); e{"r3*
//logResponseHead(httpConnection); ]N\J~Gm
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byte[] b = new byte[1024];
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int nRead; dP0%<Q|
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) X{j`H\'L
{ t%`GXJb
nStartPos += fileAccessI.write(b,0,nRead); dF?:&oP]
//if(nThreadID == 1) sKvz<7pag
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); sfv{z!mo
} <ETR6r
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Utility.log("Thread " + nThreadID + " is over!"); f""+jc1
bDownOver = true; cM= ?{W7~
//nPos = fileAccessI.write (b,0,nRead); ?Z]5
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} |@a.dgz,
catch(Exception e){e.printStackTrace ();} /i${ [1
} p%8v+9+h2
} tocZO
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//打印回应的头信息 (H\)BS7#R
public void logResponseHead(HttpURLConnection con) Y2)2
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{ U49#?^?
for(int i=1;;i++) am$-1+iX
{ Vl0
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String header=con.getHeaderFieldKey(i); =%}++7#
if(header!=null) uTemAIp
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//responseHeaders.put(header,httpConnection.getHeaderField(header)); COF_a%
Utility.log(header+" : "+con.getHeaderField(header)); /Lf+*u>"
else l Wa4X#~.
break; '_nJ DM
} U',9t
} |)7dh B
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public void splitterStop() mkR1iY
{ }3"FQ/6C
bStop = true; o
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} b R6g^Yf
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} X/5\L.g2
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