/* jf=90eJc
**SiteFileFetch.java 6+SaO
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*/ *nHkK!d<N
package NetFox; ~[0^{$rrWs
import java.io.*; f3mQd}<L
import java.net.*; 8~iggwZ~h"
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public class SiteFileFetch extends Thread { D!V*H?;U
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SiteInfoBean siteInfoBean = null; //文件信息Bean dF+:9iiAm
long[] nStartPos; //开始位置 q)RTy|NJ^
long[] nEndPos; //结束位置 %)y-BdSp.
FileSplitterFetch[] fileSplitterFetch; //子线程对象 fLuOxYQbf
long nFileLength; //文件长度 %eJE@$
boolean bFirst = true; //是否第一次取文件 vZ|Wj] ;o
boolean bStop = false; //停止标志 *>jJ<8!
File tmpFile; //文件下载的临时信息 MVp+2@)}s
DataOutputStream output; //输出到文件的输出流 t28 y=nv
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类)
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public SiteFileFetch(SiteInfoBean bean) throws IOException jjg[v""3|
{ "X-"uIc
siteInfoBean = bean; 4z^VwKH\ j
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); &C6*"JZ4
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); S|_"~Nd=
if(tmpFile.exists ()) c,5yH
{ L ?S#3@Pa
bFirst = false; -'j|U[&N\
read_nPos(); *,Sa*-7(
} `m-7L
else E~`<n]{G-C
{ LC0g"{M
nStartPos = new long[bean.getNSplitter()]; ]KQBek#DD
nEndPos = new long[bean.getNSplitter()]; o_.`&Q6n
} vk3C&!M<a
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} Y58et9gRO
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public void run() [9~6, ;6
{ nOU.=N
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//获得文件长度 *YP;HL
//分割文件 H) q_9<;
//实例FileSplitterFetch uL=FK
//启动FileSplitterFetch线程 k}e~xbh-y
//等待子线程返回 #6 M3BF
try{ Tuy5h5
if(bFirst) t0)XdIl8
{ 6FEIQ#`{
nFileLength = getFileSize(); xDn#=%~+x
if(nFileLength == -1) LbnW(wr6:(
{ Gg{M
System.err.println("File Length is not known!"); N[sJ5oF
} R rp-SR?O
else if(nFileLength == -2) A7zL\U4
{ nZ#0L`@"Y
System.err.println("File is not access!"); _O`s;oc
} '-rRD\"q
else ]=(PtzVa
{ .\"8H1I\T
for(int i=0;i<nStartPos.length;i++) rpv<'$6
{ byX)4&
nStartPos = (long)(i*(nFileLength/nStartPos.length)); e0`5PVJ
} Vv*](iM
for(int i=0;i<nEndPos.length-1;i++) Gg5+Ap D
{ > |(L3UA9
nEndPos = nStartPos[i+1]; @gjA8mL
} e^or qw/I
nEndPos[nEndPos.length-1] = nFileLength; oN=>U"<\1
} bA/'IF+
} Z4D[nPm$
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//启动子线程 B[;aNyd<
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 6rN.)dL.#N
for(int i=0;i<nStartPos.length;i++) [(Ihu e
{ H~lvUHN
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ?l^NKbw
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 8]xYE19=
nStartPos,nEndPos,i); S.*LsrSV
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _''9-t;n,
fileSplitterFetch.start(); k6(0:/C
} l6pvQ|
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), v`r*Yok;`
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); |L(h+/>aWX
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", l|K$6>80
nEndPos = " + nFileLength); HD>UTX`&mc
// fileSplitterFetch[nPos.length-1].start(); >yqFO
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//等待子线程结束 Er<!8;{?
//int count = 0; oVIc^yk5a
//是否结束while循环 R dLk85<n
boolean breakWhile = false; `':G92}#
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while(!bStop) g\G}b
{ 1i@a? 27|
write_nPos(); 8_T9[]7V8
Utility.sleep(500); gm7 [m}
breakWhile = true; \-r"%@OkW
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for(int i=0;i<nStartPos.length;i++)
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{ FM<`\d'
if(!fileSplitterFetch.bDownOver)
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{ v>0} v)<v
breakWhile = false; RSup_4A
break; !JA//{?
} _Oy;:XN
} N, 4hh?
if(breakWhile) O[ F
break; /&zlC{:G92
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//count++; Fmzkbt~oe
//if(count>4) XUTsW,WC
// siteStop(); o&>aYlXd
} Hh*
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System.err.println("文件下载结束!"); >O~
} q I*7ToBJ
catch(Exception e){e.printStackTrace ();} hp}JKj@
} -!IeP]n#P
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//获得文件长度 Ht|"91ZC5
public long getFileSize() :}-izd)/j
{ C~T*Wlk
int nFileLength = -1; ogJ *
try{ $>rKm
URL url = new URL(siteInfoBean.getSSiteURL()); +HlZ?1g
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 9hjzOJPuga
httpConnection.setRequestProperty("User-Agent","NetFox"); Zm6|aHx8v
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int responseCode=httpConnection.getResponseCode(); .pIO<ZAFT
if(responseCode>=400) "%#CMCE|f
{ 5E
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processErrorCode(responseCode); &.P G2f*
return -2; //-2 represent access is error HF*j=qt!
} n_kE
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String sHeader; @ ?bY,
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for(int i=1;;i++) &FWz7O>1
{ DC0ON`
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ?*'0;K13
//Utility.log(in.readLine()); K?>sP%m)
sHeader=httpConnection.getHeaderFieldKey(i); 9(lcQuE9
if(sHeader!=null) RV%)~S@!R
{ <7`U1DR=
if(sHeader.equals("Content-Length")) 4<Kxo\\S
{ M9?f`9
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); F:8@ ]tA&
break; Q+s2S>U{v
} AOef1^S=
} eu'~(_2
else ahFK^ #s
break; <MoyL1=
} ijKQ`}JA
} dtig_s,)D
catch(IOException e){e.printStackTrace ();} ]d.e(yCuE
catch(Exception e){e.printStackTrace ();} (6&"(}Pai
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Utility.log(nFileLength); 6VLo4bq 5
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return nFileLength; yatZAl(B
} M5 ^qc
}:(;mW8
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//保存下载信息(文件指针位置) `nY.&YT
private void write_nPos() >X*Y jv:r
{ NdrR+t^#
try{ yQf(/Uxk*x
output = new DataOutputStream(new FileOutputStream(tmpFile)); Adgfo)X5
output.writeInt(nStartPos.length); ^DVryeLD
for(int i=0;i<nStartPos.length;i++) k106fT]eX
{ #Y'ewu;qJ
// output.writeLong(nPos); p-H}NQ\
output.writeLong(fileSplitterFetch.nStartPos); T[MDjhv'
output.writeLong(fileSplitterFetch.nEndPos); tToP7q^
}
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output.close(); O`T_'.Lk
} ^fmuBe}d{
catch(IOException e){e.printStackTrace ();} $i1:--~2\
catch(Exception e){e.printStackTrace ();} 4vV\vXT *
} wj5,_d)
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//读取保存的下载信息(文件指针位置) T8d=@8g,%
private void read_nPos() Dw$RHogb~y
{ F<Xtp8
try{ a'r1or4
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); }KT$J G?
int nCount = input.readInt(); UhJ!7Ws$
nStartPos = new long[nCount]; 59i2*<k
nEndPos = new long[nCount]; E6M*o+Y
for(int i=0;i<nStartPos.length;i++) <'\!
{ 7spZe"
nStartPos = input.readLong(); 4*HBCzr7[
nEndPos = input.readLong(); N6> rU
} n3j_=(
input.close(); u=Xpu,q
} ZrB(!L~7
catch(IOException e){e.printStackTrace ();} ct<XKqbI
catch(Exception e){e.printStackTrace ();} AnK X4Q
} D
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private void processErrorCode(int nErrorCode) EAy@kzY?
{ /:"^,i\t
System.err.println("Error Code : " + nErrorCode); ]c
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} R7O<>kt
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//停止文件下载 Q<KF<K'0hg
public void siteStop() GMB3`&qh
{ ewWw
bStop = true; gtT&97tT<
for(int i=0;i<nStartPos.length;i++) ddd2w
fileSplitterFetch.splitterStop(); Ya(3Z_f+VZ
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} z?F`)}
} e)m6xiZ
//负责部分文件的抓取 :))&"GY
**FileSplitterFetch.java 1Zi` \N4T
*/ Y0J:c?,
package NetFox; +SW|/oIU
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import java.io.*; /a)^)
import java.net.*; LROrhO
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public class FileSplitterFetch extends Thread { 6']G HDK
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String sURL; //File URL e/#6qCE
long nStartPos; //File Snippet Start Position 1$`|$V1
long nEndPos; //File Snippet End Position L\5:od[EP
int nThreadID; //Thread's ID /Ak\Q5O'3
boolean bDownOver = false; //Downing is over <0? r#
}
boolean bStop = false; //Stop identical rY8(`a
FileAccessI fileAccessI = null; //File Access interface S9ic4rcd
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException }E[vW
{ dvz6
this.sURL = sURL; yu&mu