/*
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**SiteFileFetch.java SI7r`'7A'
*/ qrcir-+
package NetFox; V|pO";%>,
import java.io.*; Q=^TKsu
import java.net.*; #X0Y8:vj
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public class SiteFileFetch extends Thread { j_SUR)5
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SiteInfoBean siteInfoBean = null; //文件信息Bean n{"a0O
long[] nStartPos; //开始位置 U Fyk%#L
long[] nEndPos; //结束位置 Oki{)Ssy
FileSplitterFetch[] fileSplitterFetch; //子线程对象 "fu@2y4^
long nFileLength; //文件长度 *4c5b'u
boolean bFirst = true; //是否第一次取文件 I~,b ZA
boolean bStop = false; //停止标志 _BG7JvI
File tmpFile; //文件下载的临时信息 _[N*k"
DataOutputStream output; //输出到文件的输出流 Y$W)JWMY`
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Zl?9ibm;@
public SiteFileFetch(SiteInfoBean bean) throws IOException ,
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{ kk}_AZ0eK
siteInfoBean = bean; l_P90zm39!
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); U"L-1]L
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); }`]Et99Q5
if(tmpFile.exists ()) lDZ~
{ l_zTpyOZ
bFirst = false; BVS
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read_nPos(); >txeo17Ba\
} 5e&;f
else cpphnGj5
{ C9eisUM
nStartPos = new long[bean.getNSplitter()]; ~\ v"xV
nEndPos = new long[bean.getNSplitter()]; WpC9(AX5g
} q<4{&omUJ
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} 'AZxR4W
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public void run() Tb{RQ?Nw'
{ 7hT@,|(j
//获得文件长度 NdC5w-WY
//分割文件 T
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//实例FileSplitterFetch 0KjCM4t
//启动FileSplitterFetch线程 }U|Vpgd!
//等待子线程返回 C4gzg
try{ ~Jlq.S'
if(bFirst) =:\5*
{ SA?1*dw)
nFileLength = getFileSize(); =D)ADZ\<r
if(nFileLength == -1) E|W7IgS
{ Us% _'}(/U
System.err.println("File Length is not known!"); z</^qy
} 0R}hAK+| 4
else if(nFileLength == -2) FhQb9\g
{ Asj<u!L
System.err.println("File is not access!"); j? Vs"d|
} ts
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else 'a>D+A:
{ -0<ZN(?|
for(int i=0;i<nStartPos.length;i++) SUD~@]N1
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); ~w}=Oby'y
} <|hrmwk|
for(int i=0;i<nEndPos.length-1;i++) R0-Y2v
{ zO0K*s.yK
nEndPos = nStartPos[i+1]; c,#Nd@
} @[{5{ y
nEndPos[nEndPos.length-1] = nFileLength; Ti>}To}B5
} +R"n_6N
} IH.EvierJ
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//启动子线程 *E-MJCv
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; i#PR
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for(int i=0;i<nStartPos.length;i++) mB%m<Zo\U
{ (
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), N]&hw&R{Q
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), /buj(/q^#
nStartPos,nEndPos,i); nPH\Lra
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); $9Gra#
fileSplitterFetch.start(); !(y(6u#
} Bf" ZmG9
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), gl!ht@;>ak
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); {~#d_!(
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", uxL3 8d]
nEndPos = " + nFileLength); Uh'W d_?
// fileSplitterFetch[nPos.length-1].start(); >2NsBS(
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//等待子线程结束 7**zO3
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//int count = 0; ::@JL
//是否结束while循环 #z}0]GJKj
boolean breakWhile = false; U@:l~xJ
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while(!bStop) jH<,dG:{
{ (@S9>z4s
write_nPos(); &uI33=
Utility.sleep(500);
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breakWhile = true; %cASk>^i
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for(int i=0;i<nStartPos.length;i++) -o57"r^x
{ 1U
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if(!fileSplitterFetch.bDownOver) ~eUv.I/
{ {'#7b# DB>
breakWhile = false; ;|f]e/El
break; |RDE/
} M`xI N~
} 4thPR}DH}
if(breakWhile) `R*!GHro
break; jEK{47i v
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//count++; Ld=6'C8ud
//if(count>4) Vc+~yh.)
// siteStop(); ;}k_
} T;i+az{N:V
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System.err.println("文件下载结束!"); 3w! NTvp
} z'0
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catch(Exception e){e.printStackTrace ();} S(: |S(
} Az/P;C=
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//获得文件长度 H-8_&E?6m
public long getFileSize() Htep3Ol3
{ |^#Z!Hp_Y
int nFileLength = -1; 5e2yJ R
try{ d!"gb,ec
URL url = new URL(siteInfoBean.getSSiteURL()); mOb@w/f
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); s+v$sF
httpConnection.setRequestProperty("User-Agent","NetFox"); }RQ'aeVl(
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int responseCode=httpConnection.getResponseCode(); q'jInwY|x
if(responseCode>=400) WctGhGH
{ B*fBb.Z
processErrorCode(responseCode); !ce,^z&5
return -2; //-2 represent access is error A \Z _br
} G ahY+$L,
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String sHeader; UO-,A j*wW
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for(int i=1;;i++) UBx0Z0Y
{ zZS,<Z
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); d)0 hAdh
//Utility.log(in.readLine()); epP_~TU
sHeader=httpConnection.getHeaderFieldKey(i); _ sBFs.o
if(sHeader!=null) D~,iI7ac
{ TH+TcYqO
if(sHeader.equals("Content-Length")) CDDEWVd
{ hxGo~<. :
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); `[tYe <
break; QtOT'<2t]
} RG-,<G`
} ST\d-x
else T"E%;'(cp)
break; 3.%jet1
} PH!rWR
} C0L(ti;
catch(IOException e){e.printStackTrace ();} yI's=Iu`
catch(Exception e){e.printStackTrace ();} l+?sR<e?!
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Utility.log(nFileLength); 83Fmu/(
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return nFileLength; r4 ;nkx
} Chtls;Ph[
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//保存下载信息(文件指针位置) S?Uvt?
private void write_nPos() JwUz4
{ ;zi4W1
try{ OPDRV\
output = new DataOutputStream(new FileOutputStream(tmpFile)); F/D/1w^ iR
output.writeInt(nStartPos.length); |LE*R@|3$
for(int i=0;i<nStartPos.length;i++) ?gS~9jgcd
{ `~LaiN.
// output.writeLong(nPos); Mey=%Fv
output.writeLong(fileSplitterFetch.nStartPos); ,
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output.writeLong(fileSplitterFetch.nEndPos); h8HA^><Xr
} M_\)<a(8
output.close(); Xyw;Nh!!d
} )(`,!s,8)
catch(IOException e){e.printStackTrace ();} T2k# "zD
catch(Exception e){e.printStackTrace ();} !^w}Sp
} }vQY+O
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//读取保存的下载信息(文件指针位置) yzJTNLff
private void read_nPos() :UDe\zcd"
{ *l'5z)]
try{ )H<F([Jri
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); y;tX`5(fe
int nCount = input.readInt(); A<cnIUW
nStartPos = new long[nCount]; m[&