/* 1 :<f[l
**SiteFileFetch.java &N.D!7X
*/ eJlTCXeZ|
package NetFox; 3!ZndWSHV
import java.io.*; :=3Ty]e
import java.net.*; }j;*7x8(
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public class SiteFileFetch extends Thread { (< gk<e*
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SiteInfoBean siteInfoBean = null; //文件信息Bean ju~js
long[] nStartPos; //开始位置 HG{r\jh
long[] nEndPos; //结束位置 W{B)c?G]
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ~ (I'm[
long nFileLength; //文件长度 }&M$
boolean bFirst = true; //是否第一次取文件 +zn&DG0\X
boolean bStop = false; //停止标志 U=QfInB
File tmpFile; //文件下载的临时信息 Fg;V6s/>ts
DataOutputStream output; //输出到文件的输出流 =8#$'1K,v
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) VPBlU
public SiteFileFetch(SiteInfoBean bean) throws IOException D',[M)
{ s~V%eq("}
siteInfoBean = bean; mWN9/+!
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); _\uyS',
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); .s Ci9d
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if(tmpFile.exists ()) V/"P};n
{ lB3@jF
bFirst = false; X]
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read_nPos(); I@ "%iYL
} tj7{[3~-[
else
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nStartPos = new long[bean.getNSplitter()]; M@%$9N)gd
nEndPos = new long[bean.getNSplitter()]; LVt{`
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public void run() !0p_s;uu,W
{ t|XQFb@}
//获得文件长度 %+0
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//分割文件 98O0M#|d
//实例FileSplitterFetch vG;)(.:
//启动FileSplitterFetch线程 x"7`,W
//等待子线程返回 JWzN 'a R
try{ D}YAu,<K
if(bFirst) :56f
{ />FgDIO
nFileLength = getFileSize(); *?dw`j_b >
if(nFileLength == -1) :s(vn Ie^
{ <B"M} Y>_P
System.err.println("File Length is not known!"); N3 O~_=/v?
} UM[<v9NWE
else if(nFileLength == -2) 0{0BL@H
{ %z9eVkPI~
System.err.println("File is not access!"); ?7n(6kmj4Q
} uj
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else E6
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{ -`knSR
for(int i=0;i<nStartPos.length;i++) x.J%
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{ k(As^'>
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 1"7Rs}l7
} LNm{}VJ%
for(int i=0;i<nEndPos.length-1;i++) U TT 7a"
{ T;{M9W+
nEndPos = nStartPos[i+1]; c^Y&4=>T
} %UV'HcO/gp
nEndPos[nEndPos.length-1] = nFileLength; BM6 J
} @!;EW
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} 0C3s
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//启动子线程 KNH.4A ,
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; z^xrB$8
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for(int i=0;i<nStartPos.length;i++) <]9%Pm#X
{ =~7%R.U([e
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [ vWcQ6m
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), srX" vF
nStartPos,nEndPos,i); q>JW$8
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); AL(YQ)-Cg
fileSplitterFetch.start(); %(72+B70R
} yDk|ad|
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^##tk
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); MGoYL\
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", <|,0%bq)|
nEndPos = " + nFileLength); 8
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// fileSplitterFetch[nPos.length-1].start(); aVI%FycYo
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//等待子线程结束 }\p>h
//int count = 0; ">?ocJ\9
//是否结束while循环 ?z
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boolean breakWhile = false; +1`Zu$|
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while(!bStop) Y6J7N^
{ N|G=n9p
write_nPos(); oSDx9%
Utility.sleep(500); Uwd^%x*
breakWhile = true; Lbo8>L(
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v\LcZt`}
for(int i=0;i<nStartPos.length;i++) &PfCY{_
{ z?a<&`W
if(!fileSplitterFetch.bDownOver) 0H|U9
{ $m$tfa-
breakWhile = false; =e<;B_~.
break; y1zNF$<q
} m%mA0r
} ?B&Z x-krd
if(breakWhile) !y1]S .;
break; % FN3/iM
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//count++; \M@9#bd
//if(count>4) @ P[o
// siteStop(); pH#*:v!)
} yS*s[vT
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System.err.println("文件下载结束!"); cyR K&J
} :j sa.X
catch(Exception e){e.printStackTrace ();} F4=+xd >0
} ~S5wfx&
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//获得文件长度 x2 s%qZ#
public long getFileSize() 1-HL#y*7$
{ }]8n3&*
int nFileLength = -1; D/T&0
try{ HkGA$
URL url = new URL(siteInfoBean.getSSiteURL()); H,/|pP.
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); dMcCSwYh
httpConnection.setRequestProperty("User-Agent","NetFox"); ,34|_
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int responseCode=httpConnection.getResponseCode(); |2!!>1k
if(responseCode>=400) XxN=vL&m
{ i\4Q v"%
processErrorCode(responseCode); ||{V*"+\
return -2; //-2 represent access is error 5kX#qT=
} uVO*@Kj+
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String sHeader; M5mCG
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for(int i=1;;i++) y:FxX8S$'e
{ ER z@o_
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); fB\+.eN
//Utility.log(in.readLine()); AnB]f~Yjl
sHeader=httpConnection.getHeaderFieldKey(i); 9t`Z_HwdCb
if(sHeader!=null) MhE'_sq
{ 8 *Fr=+KN
if(sHeader.equals("Content-Length")) sd (I@
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{ -c^/k_n
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); - EwtO4vLJ
break; P)7_RE*gY
} /F>\-
} x~7_`=}rO
else Je|D]w
break; |sM#nhxK
} amPC C
} Hk65c0
catch(IOException e){e.printStackTrace ();} 6 (:^>@
catch(Exception e){e.printStackTrace ();} X>i`z
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Utility.log(nFileLength); s_(%1/{
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return nFileLength; 3
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} d+9T}? T:*
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//保存下载信息(文件指针位置) l\vvM>#S
private void write_nPos() njz:7]>e
{ Tk9/1C{8
try{ M4;A4V=W
output = new DataOutputStream(new FileOutputStream(tmpFile)); ^7l.!s#$b
output.writeInt(nStartPos.length); [+=h[DC
for(int i=0;i<nStartPos.length;i++) V;b^b5yZ>
{ _g%Wx?K9
// output.writeLong(nPos); T>"GH M
output.writeLong(fileSplitterFetch.nStartPos); Ek!$Ary
output.writeLong(fileSplitterFetch.nEndPos); 4r@dV%:%<
} \O]1QM94Y
output.close(); 7l-`k
} PI"&-lXI-m
catch(IOException e){e.printStackTrace ();} ?0Xt |
catch(Exception e){e.printStackTrace ();} <lk_]+ XJ3
} "@xF(fyg
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//读取保存的下载信息(文件指针位置) /]/3)@wT
private void read_nPos() :U5>. ):
{ ^k&T