/* PVsKI<
**SiteFileFetch.java TWzLJ63*
*/ 1h&`mqY)L.
package NetFox; IdQ./@?
import java.io.*; %WgN+A0
import java.net.*; b~J)LXj]w
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fes s6=k
public class SiteFileFetch extends Thread { b,Oh8O;>
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SiteInfoBean siteInfoBean = null; //文件信息Bean j-":>}oW2.
long[] nStartPos; //开始位置 `
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long[] nEndPos; //结束位置 hW~.F
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Ttt'X<9
long nFileLength; //文件长度 uMJ\
boolean bFirst = true; //是否第一次取文件 /]_ t->
boolean bStop = false; //停止标志 Ot2o=^Ng
File tmpFile; //文件下载的临时信息 } o%^
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DataOutputStream output; //输出到文件的输出流 Y !?'[t
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) G3~`]qf
public SiteFileFetch(SiteInfoBean bean) throws IOException [ QiG0D_'=
{ H"#ITL
siteInfoBean = bean; yO q@w!xz
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); wT4@X[5$
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); E5w;75,
if(tmpFile.exists ()) 9af.t
{ {'5"i?>s0>
bFirst = false; O`B,mgT(
read_nPos(); CIjc5^Y2
} `ePC$Ovn
else !y= R)k
{ -QrC>3xZR
nStartPos = new long[bean.getNSplitter()]; V)j[`,M:
nEndPos = new long[bean.getNSplitter()]; ,%M[$S'
} A*EOn1hN
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} DN*5q9.
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public void run() AcC &Q:g
{ aQCu3T
//获得文件长度 ieFl4hh[G
//分割文件 8]ZzO(=@{
//实例FileSplitterFetch .T|
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//启动FileSplitterFetch线程 0zaK&]oY0
//等待子线程返回 =dmr,WE
try{ T5(S2^)o
if(bFirst) *m~-8_ >;
{ Vw;Z0_C
nFileLength = getFileSize(); '<R>cN"
if(nFileLength == -1) ~HZdIPcC
{ aD^$v
System.err.println("File Length is not known!"); Smr{+m a
} 3v/B*M VI
else if(nFileLength == -2) "& ,ov#
{ IS2cU'
System.err.println("File is not access!"); hH %>
} p+VU:%.t
else jJy:/!i
{ EB~]6.1
for(int i=0;i<nStartPos.length;i++) ?sf<cFF
{ 1E+12{~m"i
nStartPos = (long)(i*(nFileLength/nStartPos.length)); g!'R}y
} > |$]=e,Z
for(int i=0;i<nEndPos.length-1;i++) $[ {5+ *
{ [#PE'i4
nEndPos = nStartPos[i+1]; szI7I$Qb
} lQn"
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nEndPos[nEndPos.length-1] = nFileLength; U2q6^z4l
} Xz$4cI#n:
} p3I"LY
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//启动子线程 g'8Y5x[
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; w;z7vN~/O
for(int i=0;i<nStartPos.length;i++) |#oS7oV(
{ /*K2i5&X
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), # B `?}a=
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ;_o]$hV|
nStartPos,nEndPos,i); ekM?
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); YuX JT*
fileSplitterFetch.start(); T(b9b,ov)
} x:Y9z_)O
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ;G[V:.o-
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); _yg_?GH
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ^L[:DB{Z
nEndPos = " + nFileLength); 2jsbg{QS#_
// fileSplitterFetch[nPos.length-1].start(); *FlPGBjJ
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//等待子线程结束 OQVrg2A%(
//int count = 0; }9~^}99}
//是否结束while循环 .iXN~*+g
boolean breakWhile = false; z/@_?01T=
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while(!bStop) 0> f!S` *
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write_nPos(); K7
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Utility.sleep(500); /%wS5IZ^
breakWhile = true; |Splbsk
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for(int i=0;i<nStartPos.length;i++)
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{ HA6tGZP*L
if(!fileSplitterFetch.bDownOver) i"8mrWb
{ L P<A q
breakWhile = false; _plK(g-1J%
break; -d ntV=
} }z3j7I
} g'0CYY
if(breakWhile) +#O+%!
break; >Vuvbo
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//count++; %y1!'R:ZW
//if(count>4) jc^QWK*q
// siteStop(); t@q'm.:uw<
} +H)'(<
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System.err.println("文件下载结束!"); |)-kUu
} vOQ%f?%G\
catch(Exception e){e.printStackTrace ();} @Nu2
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} Z;BS@e
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//获得文件长度 PwY/VGT
public long getFileSize() tFN >]`Z
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int nFileLength = -1; OM*_%UF
try{ ua\t5M5
URL url = new URL(siteInfoBean.getSSiteURL()); kaG/8G(
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); BZR{}Aj4pa
httpConnection.setRequestProperty("User-Agent","NetFox"); 0[;2dc
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int responseCode=httpConnection.getResponseCode(); ]hl*6
if(responseCode>=400) 12$0-@U
{ >)><u4}
processErrorCode(responseCode); _)A|JC!jId
return -2; //-2 represent access is error 8tY>%A~^z
} U&?hG>
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String sHeader; |s8N
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for(int i=1;;i++) d2\!tJm
{ Ni$'#
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Epzg|L1)
//Utility.log(in.readLine());
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sHeader=httpConnection.getHeaderFieldKey(i); N&9o 1_}
if(sHeader!=null) z;OYPGvkw
{ Rr) 5[
if(sHeader.equals("Content-Length")) o)`PSw=
{ }
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); aDlp>p^E>
break; Fs+tcr/\[
} O
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} 4kOO3[r
else #-{<d%qk
break; xtV+Le%
} e`*}?N4d
} ]#/nn),Z
catch(IOException e){e.printStackTrace ();} t,/ G
catch(Exception e){e.printStackTrace ();} )"?4d[ 5
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Utility.log(nFileLength); Hv,|XE@Y
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return nFileLength; ,Oo`*'a[o7
} NvK9L.K
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//保存下载信息(文件指针位置) z^Hc'oVXj:
private void write_nPos() 0<M-asI?
{ W.wPy@yi
try{ $8EEtr,!
output = new DataOutputStream(new FileOutputStream(tmpFile)); 1gI7$y+?
output.writeInt(nStartPos.length); -I< >Ab
for(int i=0;i<nStartPos.length;i++) Vk5Z[w a
{ .i0K-B
// output.writeLong(nPos); kpOdyn(
output.writeLong(fileSplitterFetch.nStartPos); 5LeZ?'"c
output.writeLong(fileSplitterFetch.nEndPos); *k?:k78L
} lu utyK!
output.close(); ''17(%
} woI5a ee|
catch(IOException e){e.printStackTrace ();} =H95?\}T[
catch(Exception e){e.printStackTrace ();} WtSs:D
} K#"=*p,
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//读取保存的下载信息(文件指针位置) #^FM~5KK
private void read_nPos() +qi&