/* >!qtue7B
**SiteFileFetch.java Jqzw94
*/ 2ih}?%H8
package NetFox; (Zx--2lc
import java.io.*; q~#>MB}".
import java.net.*; _N:$|O#
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public class SiteFileFetch extends Thread { 0Sk~m4fj(
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SiteInfoBean siteInfoBean = null; //文件信息Bean V5-!w0{
long[] nStartPos; //开始位置 %h(%M'm?
long[] nEndPos; //结束位置 MtwlZg`c3
FileSplitterFetch[] fileSplitterFetch; //子线程对象 :@5{*o
long nFileLength; //文件长度 =^p}JhQ
boolean bFirst = true; //是否第一次取文件 9BP'[SM%),
boolean bStop = false; //停止标志 gJp6ReZ#
File tmpFile; //文件下载的临时信息 O`Qke
Z}
DataOutputStream output; //输出到文件的输出流 T*@o?U
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) D?%[du:V
public SiteFileFetch(SiteInfoBean bean) throws IOException B#hvw'}
{ [(a3ljbRX
siteInfoBean = bean; ..h@QQ
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); (`slC~"
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); =RXeN+
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if(tmpFile.exists ()) Id^q!4Th9
{ DZmVm['l
bFirst = false; S0OL;[*.
read_nPos(); ZD]{HxGL!
} U:99w
else ] 7[#K^
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nStartPos = new long[bean.getNSplitter()]; E$z- |-{>
nEndPos = new long[bean.getNSplitter()]; cQxUEY('+
} ez9F!1
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} ae-tAA[1Y
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public void run() EdqB4-#7
{
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//获得文件长度 A`M-N<T
//分割文件 Y=|20Y\K
//实例FileSplitterFetch 2%fzRXhu%
//启动FileSplitterFetch线程 ~tTn7[!
//等待子线程返回 [z\baL|
try{ &,8Qe;
if(bFirst) 117lhx].'
{ UrciCOQf
nFileLength = getFileSize(); Bx\ o8k
if(nFileLength == -1) /~s<@<1!X
{ '\d
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System.err.println("File Length is not known!");
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} 0\"#Xa+}8
else if(nFileLength == -2) .7
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{ SIm1fC
System.err.println("File is not access!"); \>*.+?97
} |J`v
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else l
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{ R}w}G6"\
for(int i=0;i<nStartPos.length;i++) ts(u7CJd
{
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); _1Rw~}O
} '_7rooU9
for(int i=0;i<nEndPos.length-1;i++) 'Q=)-
{ {HM[ )t0
nEndPos = nStartPos[i+1]; Jlb{1B$7
} EKcPJ\7
nEndPos[nEndPos.length-1] = nFileLength; &-o5lrq
} lb9?Uc@
} N LQ".mM+
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//启动子线程 1yz%ud-l
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 9[X'9*,
for(int i=0;i<nStartPos.length;i++) .czUJyFms}
{ Fhllqh)
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), y@$E5sz
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ]=ApYg7!
nStartPos,nEndPos,i); P5B,= K>r
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); YC St X)r
fileSplitterFetch.start(); At<MY`ka
} 'OTZ&;7{
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^Os }sJ*5S
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); V,VL?J\
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ?(R#
nEndPos = " + nFileLength); &qPezyt
// fileSplitterFetch[nPos.length-1].start(); -0q|AB<
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//等待子线程结束 fnr8{sr.2Z
//int count = 0; Q[#8ErUY
//是否结束while循环 3f^jy(
boolean breakWhile = false; *^g]QQ
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{ Mb<onW
while(!bStop) ng|^Zm%
{ @8`I!fZ
write_nPos(); 3B%7SX
Utility.sleep(500); G na%|tUz|
breakWhile = true; W;R6+@I[
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for(int i=0;i<nStartPos.length;i++) Q\IViM
{ "1a!]45 +
if(!fileSplitterFetch.bDownOver) Hc<@T_h+2
{ Q3=5q w^
breakWhile = false; y2?9pVLa\y
break; PHT<]:"`<
} E=,b;S-
} 5Hj/7~ =
if(breakWhile) W{q
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break; R#ZJLT
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//count++; '3^ qW
//if(count>4) CDtL.a\
// siteStop(); V D7^wd9
} 4?@#w>(
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System.err.println("文件下载结束!"); n2-+.9cY
} ami>Pp
catch(Exception e){e.printStackTrace ();} 3SbZD
} 2+)h!y]
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//获得文件长度 MIkp4A
public long getFileSize() z]%@r 7
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int nFileLength = -1; rq7yNt
try{ 3k>#z%//
URL url = new URL(siteInfoBean.getSSiteURL()); GwDOxH'
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); NWiDNK[VE}
httpConnection.setRequestProperty("User-Agent","NetFox"); 5QXU"kWH
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int responseCode=httpConnection.getResponseCode(); LzLJ6A>;R
if(responseCode>=400) Bx}"X?%S
{ _nzq(m1@
processErrorCode(responseCode); IMdp"
return -2; //-2 represent access is error _(gkYJ+MK
} #
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String sHeader; |zfFB7}v
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for(int i=1;;i++) NRG~ya >
{ ?xMTO
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); !.V_?aYi8
//Utility.log(in.readLine()); O"TVxP:
sHeader=httpConnection.getHeaderFieldKey(i); 2<n18-|OQ
if(sHeader!=null) OPq|4xu
{ ,-EN{ed
if(sHeader.equals("Content-Length")) Brs}
{ >m%TUQ#%
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 't8!.k
break; RaTNA W)v>
} NW0se
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} yVn%Bz'
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else =z9,=rR4
break;
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} j?$B@Zk
} DH_~,tK9
catch(IOException e){e.printStackTrace ();} mM/#(Ghl
catch(Exception e){e.printStackTrace ();} 6.45^'t]
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Utility.log(nFileLength); qR2cRepV
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return nFileLength; _O87[F1
} `hG`}G|^
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//保存下载信息(文件指针位置) 7g{JE^u
private void write_nPos() o8E<_rei
{ hB\BFVUSn/
try{ j+AZ!$E
output = new DataOutputStream(new FileOutputStream(tmpFile)); W6EEC<$JL
output.writeInt(nStartPos.length); twldwuN
for(int i=0;i<nStartPos.length;i++) "
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{ ^qC.bv]&
// output.writeLong(nPos); 75R4[C6T
output.writeLong(fileSplitterFetch.nStartPos); #LR6wEk
output.writeLong(fileSplitterFetch.nEndPos); .*YOyK3H
} h \`(
output.close(); oui0:Vy<
} UBQtD|m\
catch(IOException e){e.printStackTrace ();} suhnA(T{
catch(Exception e){e.printStackTrace ();} .':17 $c`H
} c"`HKfL
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//读取保存的下载信息(文件指针位置) OH n~DL2
private void read_nPos() :Zq?V`+M
{ JDnWBE V
try{ L!/{Z
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); e>!]_B1ad
int nCount = input.readInt(); t*BCpC}
nStartPos = new long[nCount]; H)*%e G~
nEndPos = new long[nCount]; loq2+(
for(int i=0;i<nStartPos.length;i++) &2@Rc?!6_P
{ ;Cx`RF
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nStartPos = input.readLong(); ~^Ga?Q_
nEndPos = input.readLong(); >c:nr&yP
} HH(2
input.close(); &V&beq4)p
} 7{S;~VH3
catch(IOException e){e.printStackTrace ();} )Rk(gd
catch(Exception e){e.printStackTrace ();} ~k
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} Ug gg!zA
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private void processErrorCode(int nErrorCode) #gf0*:p
{ :N<o<