/* ', ~
**SiteFileFetch.java "A\h+q-
*/ f@yInIzRJ
package NetFox; WVyk?SBw
import java.io.*; )-VpDW!%_
import java.net.*; kn<IWW_t
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public class SiteFileFetch extends Thread { (SGX|,5X7
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SiteInfoBean siteInfoBean = null; //文件信息Bean Oxsx\f_
long[] nStartPos; //开始位置 _}+Aw{7!r
long[] nEndPos; //结束位置 D=1:-aLP7
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ~/^q>z!\4
long nFileLength; //文件长度 `&ufdn\j
boolean bFirst = true; //是否第一次取文件 uaghB,i'n
boolean bStop = false; //停止标志 /M!b3bmA
File tmpFile; //文件下载的临时信息 qQjd@J}^
DataOutputStream output; //输出到文件的输出流 RwKnNIp
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) .JCd:'-
public SiteFileFetch(SiteInfoBean bean) throws IOException L7\V^f%yCm
{ Rtpk_ND!
siteInfoBean = bean; Fi)(~ji:
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); RK)1@Tz7!
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); P^[eTR*?
if(tmpFile.exists ()) 7md,!|m
{ gZq_BY_U
bFirst = false; +xNV1bM
read_nPos(); sE^ee2]OI@
} $,u>,
else #No3}O;"g
{ XM1;
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nStartPos = new long[bean.getNSplitter()]; HpP82X xj
nEndPos = new long[bean.getNSplitter()]; .>#X *u
}
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} {ooztC
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public void run() #ZkT![`
{ !,lk>j.V
//获得文件长度 w.VjGPp
//分割文件 "hid3"G
//实例FileSplitterFetch jQBL8<
//启动FileSplitterFetch线程 H #Hhi<2
//等待子线程返回 iX%9$Bft<
try{ *Xcqnu('
if(bFirst) W6gI#
{ uM)#T*(
nFileLength = getFileSize(); Znw3P|>B
if(nFileLength == -1) 5(5:5q.A/D
{
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System.err.println("File Length is not known!"); CS'LW;#[
} U7#C. Z
else if(nFileLength == -2) Gr-~&pm
{ j+9;Rvt2
System.err.println("File is not access!"); S-'R84M,F
} mF:Pplf<
else N C%96gfD
{ +Tt.5>N
for(int i=0;i<nStartPos.length;i++) zfrNM9C
{ n
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); E/V_gci
} .8wf {y
for(int i=0;i<nEndPos.length-1;i++) ZJe^MnE (G
{ `^ZhxFX
nEndPos = nStartPos[i+1]; Gg e X
} 9;7Gzr6A"
nEndPos[nEndPos.length-1] = nFileLength; O!!N@Q2g
} '8Cg2v5&w
} =kTHfdin&
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//启动子线程 3{)!T;W d
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; c=,HLHpFO(
for(int i=0;i<nStartPos.length;i++) Al1_\vx7
{ ]ur?i{S,
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), {p.^E5&
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ]"/SU6#4:
nStartPos,nEndPos,i); B"YN+So
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); nW)?cQ
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fileSplitterFetch.start(); A+|bJ>q
} dGgltY
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 8WE@ X)e
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); +T\<oj%}2
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ,wf:Fr
nEndPos = " + nFileLength); G2<$to~{
// fileSplitterFetch[nPos.length-1].start(); a,36FF~&
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//等待子线程结束 AJ+\Qs(0
//int count = 0; wBDHhXi0
//是否结束while循环 jG~-V<&
boolean breakWhile = false; :i4AkBNK
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while(!bStop) $l2`@ia"
{ 9a[1s|>w-
write_nPos(); Qs '_\|/-
Utility.sleep(500); vw 6$v
breakWhile = true; `dw">z,
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for(int i=0;i<nStartPos.length;i++) (gnN</%
{ Atb`Q'Yrw
if(!fileSplitterFetch.bDownOver) uwQgu!|x
{ 3-btaG'P
breakWhile = false; +`bnQn]x+
break; v%$l(
} ht*N[Pi4;
} _&~l,%)&
if(breakWhile) i=L 86Ks
break; {yv_Ni*6!
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//count++; j,Mbl"P
//if(count>4) [[HCP8Wk
// siteStop(); Zb=;\l*&
} MJh.)kd$
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System.err.println("文件下载结束!"); wo+`WnDh
} z
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catch(Exception e){e.printStackTrace ();} L pq)TE#
} 43E)ltR=]
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//获得文件长度 1d~d1Rd
public long getFileSize() je@&|9h
{ &c 2Qa
int nFileLength = -1; J6[}o4Z
try{ r95,X!
URL url = new URL(siteInfoBean.getSSiteURL()); T ay226
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); e/cHH34
httpConnection.setRequestProperty("User-Agent","NetFox"); `+T 2IPN
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int responseCode=httpConnection.getResponseCode(); k,$/l1D
if(responseCode>=400) |fywqQFq
{ 1 $1>cuu
processErrorCode(responseCode); 3b\s;!
return -2; //-2 represent access is error #q K.AZi
} J90:c@O"w
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String sHeader; -8l(eDm"m
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for(int i=1;;i++) |||m5(`S
{ VXiU5n^
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); _YG@P1
//Utility.log(in.readLine()); )Nqx=ms[(!
sHeader=httpConnection.getHeaderFieldKey(i); %19~9Tw
if(sHeader!=null) |$6Ten[B#
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if(sHeader.equals("Content-Length")) ^SsdM#E
{ tH&eKM4G
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); [<5/s$,i
break; ?FNgJx*\S
} b1>]?.
} k-a1^K3
else A9N8Hav
break; 5k@T{
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} Op8Gj
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catch(IOException e){e.printStackTrace ();} b+q'xnA=>
catch(Exception e){e.printStackTrace ();} *^Zt)U1$|
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Utility.log(nFileLength); mhv6.W@
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return nFileLength; p[o]ouTcS
} T59FRX
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//保存下载信息(文件指针位置) -~aG_Bp!($
private void write_nPos() cWyf04-?
{ WMnSkO
try{ W!T[
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output = new DataOutputStream(new FileOutputStream(tmpFile)); s-5#P,Lw
output.writeInt(nStartPos.length); r>! @Z2%s
for(int i=0;i<nStartPos.length;i++) 9(qoME}>=
{ ftcLP
// output.writeLong(nPos); q+4dHS)x
output.writeLong(fileSplitterFetch.nStartPos); 5x|$q kI
output.writeLong(fileSplitterFetch.nEndPos); p#Po?
} Q=d:Yz":S
output.close(); /s%-c!o^
} )X," NJG
catch(IOException e){e.printStackTrace ();} "=K3sk
catch(Exception e){e.printStackTrace ();} Ym"^Ds}
} I
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//读取保存的下载信息(文件指针位置) fd #QCs
private void read_nPos() 'hPW#*#W<
{ g]JRAM
try{ GFE3p
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); GOGS"q
int nCount = input.readInt(); Tc!n@!RA|
nStartPos = new long[nCount]; *~4<CP+"0
nEndPos = new long[nCount]; ~8UMwpl-
for(int i=0;i<nStartPos.length;i++) KPDJ$,:
{ /2E
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nStartPos = input.readLong(); -O,:~a=*_
nEndPos = input.readLong(); S&-F(#CF^
} H" A@Q.'
input.close(); ~3Pp}eO~V
} <,it<$f#
catch(IOException e){e.printStackTrace ();} = 03G~7B>
catch(Exception e){e.printStackTrace ();} cUP1Uolvn
} o\ ce|Dzt
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