/* r1i$D
**SiteFileFetch.java kWB, ;7
*/ %mY|
package NetFox; CJzm}'NY
import java.io.*; s~S?D{!
import java.net.*; I"Q#IvNw
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public class SiteFileFetch extends Thread { JNh=fvO2i
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SiteInfoBean siteInfoBean = null; //文件信息Bean ^9&b+u=X
long[] nStartPos; //开始位置 ,LhEshf
long[] nEndPos; //结束位置 'UY[ap
FileSplitterFetch[] fileSplitterFetch; //子线程对象 `5~7IPl3
long nFileLength; //文件长度 YecT 96%
boolean bFirst = true; //是否第一次取文件 ?qk@cKS
boolean bStop = false; //停止标志 7^ 4jcfJH
File tmpFile; //文件下载的临时信息 g[/^cJHQ
DataOutputStream output; //输出到文件的输出流 CV '&4oq
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) $bk>kbl P
public SiteFileFetch(SiteInfoBean bean) throws IOException jvu
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{ xN6>2e
siteInfoBean = bean; wD`[5~C{
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); >G]?
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); i-`,/e~XT
if(tmpFile.exists ()) )))2fskZ
{ #nKRTb+{
bFirst = false; g^1r0.Sp{8
read_nPos(); j5kA^MTG
} ^w>&?A'!
else f2NA=%\
{ d!o.ASL{
nStartPos = new long[bean.getNSplitter()]; |Eb&}m:E$
nEndPos = new long[bean.getNSplitter()]; =M/qV
} DlDB=N0@S
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} Y+FP
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public void run() b7bSTFZxC
{ J==}QEhQ{
//获得文件长度 V{!lk]p}a
//分割文件 TZ'aNcGg
//实例FileSplitterFetch ^]VcxKU J
//启动FileSplitterFetch线程 +kM\
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//等待子线程返回 {ih:FcI
try{ L_^`k4ct
if(bFirst) cv= \g Z
{ Jz0K}^Dj[
nFileLength = getFileSize(); =c&62;O
if(nFileLength == -1) %VWp&a8
{ 0 sZwdO
System.err.println("File Length is not known!"); SZ/(\kQ6
} \*uugw,\y
else if(nFileLength == -2) bhYU5I 9
{ ha5e(Hj?
System.err.println("File is not access!"); G;NB\3~X
} AP0|z
else I] jX7.fx
{ "J& (:(:
for(int i=0;i<nStartPos.length;i++) VgA48qZ
{ N+NK`
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 'j }g
} ehE-SrkU'
for(int i=0;i<nEndPos.length-1;i++) -,^WaB7u\
{ uoHqL IpQ
nEndPos = nStartPos[i+1]; .U 39nd
} eES'}[W>
nEndPos[nEndPos.length-1] = nFileLength; as(*B-_n~
} >b>gr OX
} uJY.5w
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//启动子线程 d@ZoV
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; /ERNS/w
for(int i=0;i<nStartPos.length;i++) Zi/-~')E
{ 6 Uw;C84!
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), NI8~QeGah
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), KzG_ <<
nStartPos,nEndPos,i); uf]Y^,2
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); E5gl ^Q?Z
fileSplitterFetch.start(); $T),DUYO
} V9T
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), +*C^:^jA
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); >$uUuiyL4
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", e\r7BW\Y
nEndPos = " + nFileLength); pDOM:lGya
// fileSplitterFetch[nPos.length-1].start(); oIb)
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//等待子线程结束 5mavcle{4r
//int count = 0; sLi*SR
//是否结束while循环 Sph*1c(R
boolean breakWhile = false; |{f~Ks%
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while(!bStop) (;UP%H>
{ +i=p5d5
write_nPos(); C8.W5P[U
Utility.sleep(500); e!Br>^8l
breakWhile = true; %K zbO0
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for(int i=0;i<nStartPos.length;i++) U
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{ Cw#V`70a
if(!fileSplitterFetch.bDownOver) Lm|al.Z
{ Vv4H:BK$
breakWhile = false; SA+d&H}Fc
break; _CE9B e\
} M/#U2!iFk
} .S!-e$EJ
if(breakWhile) O>AFF@=
break; Pq?*C;D
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//count++; OQFi.8
//if(count>4) -k{Jp/-D
// siteStop(); Cs4hgb|
} h0Jl_f#Y
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System.err.println("文件下载结束!"); XG&K32_fs
} X NE+(Bt
catch(Exception e){e.printStackTrace ();} t',BI
} v=p0 +J>
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//获得文件长度 gz61FW
public long getFileSize() 5B*qbM
{ o&$hYy"<.L
int nFileLength = -1; fHfY}BQS
try{ y5u\j{?Te
URL url = new URL(siteInfoBean.getSSiteURL()); )gXTRkmw
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); _~A~+S}
httpConnection.setRequestProperty("User-Agent","NetFox"); DYRE1!
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int responseCode=httpConnection.getResponseCode(); ~@P )tl>
if(responseCode>=400) H$tb;:
{ 5v9uHxy
processErrorCode(responseCode); S}7>RHe
return -2; //-2 represent access is error RmO yGSO
} 4seciz0?
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String sHeader; O2 v.
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for(int i=1;;i++) Mr*|9h
{ F=}Z51|:~
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); |scUo~
//Utility.log(in.readLine()); g.a| c\WH
sHeader=httpConnection.getHeaderFieldKey(i); H/J<Pd$p
if(sHeader!=null) U3F3((EYJ
{ vg(K$o{BT
if(sHeader.equals("Content-Length"))
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{ *#2Rvt*Ox
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); O,mip
break; Of`c`-<j
} l!IGc:
} kG^dqqn6
else Q4wc-s4RN
break; q#vlBL
} /6U
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} };sMU6e
catch(IOException e){e.printStackTrace ();} <*Y'lV
catch(Exception e){e.printStackTrace ();} GBbh ar},g
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Utility.log(nFileLength); X/+OF'po
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return nFileLength; "^%Z'ou
} (p |DcA]BX
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//保存下载信息(文件指针位置) \L[i9m| e
private void write_nPos() VPd,]]S5(
{ n+oDC65[
try{ <LA^%2jT
output = new DataOutputStream(new FileOutputStream(tmpFile)); -_~)f{KN@
output.writeInt(nStartPos.length); Vk7=7%xW
for(int i=0;i<nStartPos.length;i++) &qRJceT(
{ ~m`!;rE
// output.writeLong(nPos); V8"Wpl9Cz
output.writeLong(fileSplitterFetch.nStartPos); 0YS?=oi
output.writeLong(fileSplitterFetch.nEndPos); QIV%6q+*R
} s#^pC*,'
output.close(); k/lFRi-i
} I]uhi{\C
catch(IOException e){e.printStackTrace ();} @2e2^8X7f
catch(Exception e){e.printStackTrace ();} Pp_V5,i\
} 9Nt3Z>d
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//读取保存的下载信息(文件指针位置) ^l !L)iw
private void read_nPos() !k<:k
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{ ]rW8y%yD
try{ AS;.sjgk
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); G|9B)`S
int nCount = input.readInt(); z{?4*Bq
nStartPos = new long[nCount];
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nEndPos = new long[nCount]; nq;#_Rkr
for(int i=0;i<nStartPos.length;i++) ]d'^Xs
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nStartPos = input.readLong(); Q$=*aUU%G
nEndPos = input.readLong(); RJc%,
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} X+ f9q0
input.close(); rsF:4G"%
} JBcY!dy-d
catch(IOException e){e.printStackTrace ();} \6sQJq
catch(Exception e){e.printStackTrace ();} 2QayM?k8
} e.;M.8N#SQ
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private void processErrorCode(int nErrorCode) Dip*}8$o(w
{ vJCf~'
System.err.println("Error Code : " + nErrorCode); {}\CL#~y
} GLh]G(
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//停止文件下载 ' G#SLqZy
public void siteStop() A=`*r*
{ <qY5SV,
bStop = true; DQgH_!
for(int i=0;i<nStartPos.length;i++) h<3p8eB
fileSplitterFetch.splitterStop(); I@./${o
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} aRwnRii
} f7+Cz>R
//负责部分文件的抓取 r!K|E95oj9
**FileSplitterFetch.java ./w{L"E
*/ R6@uM<