/* 9Lv`3J^~
**SiteFileFetch.java M7UVL&_z%
*/ C#;}U51:t
package NetFox; c}$?k@=
import java.io.*; Ktg6 *L/
import java.net.*; <^OGJ}G
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public class SiteFileFetch extends Thread { !i0:1{.
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SiteInfoBean siteInfoBean = null; //文件信息Bean k'EP->r
long[] nStartPos; //开始位置 dfO84Z}
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long[] nEndPos; //结束位置 !c'a<{d@
FileSplitterFetch[] fileSplitterFetch; //子线程对象 -&%#R_RV
long nFileLength; //文件长度 eCdMDSFO3
boolean bFirst = true; //是否第一次取文件 &U!@l)<
boolean bStop = false; //停止标志 NmVc2V]I
File tmpFile; //文件下载的临时信息 8+Oyhd*|
DataOutputStream output; //输出到文件的输出流 `UGHk*DL)
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) N'3Vt8o,
public SiteFileFetch(SiteInfoBean bean) throws IOException 6E85mfFS
{ m'@NF--#Oq
siteInfoBean = bean; px".pYr0
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); gtqgf<mS
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); mQ:lj$Gf
if(tmpFile.exists ()) _.yBX\tf[
{ ['e8Xz0
bFirst = false; pd/{yX M
read_nPos(); >Y!5c 2~`;
} zHeqV
else K9:I8E<
{ L1
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nStartPos = new long[bean.getNSplitter()]; H<Ed"-n$I<
nEndPos = new long[bean.getNSplitter()]; *C}vy`X
} wk'|gI[W
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} uwU;glT
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public void run() Rbm"Qz
{ !:'%'@uc
//获得文件长度 \,+act"v
//分割文件 =TE6R 0b
//实例FileSplitterFetch ^/h,C^/;
//启动FileSplitterFetch线程 Zx@/5!_n.
//等待子线程返回 ]hJ#%1
try{ 9~J
if(bFirst) 0hp*(, L
{ )#%k/4(Y
nFileLength = getFileSize(); y 4j0nF
if(nFileLength == -1) 07:CcT
{ 1O"7%Pvw
System.err.println("File Length is not known!"); A'^y+42jY
} xlg 6cO
else if(nFileLength == -2) fo;Ftf0
{ Ei2hI
System.err.println("File is not access!"); f5.rzrU
} hN=YC\l
else qv>?xKSm
{ h&|q>M3
for(int i=0;i<nStartPos.length;i++) zZ@]Kq;.s
{ Oc8]A=M12
nStartPos = (long)(i*(nFileLength/nStartPos.length)); '85@U`e.
} xXp$Nm]:
for(int i=0;i<nEndPos.length-1;i++) 35|F?Jx.r
{ -HutEbkjx
nEndPos = nStartPos[i+1]; yhhW4rz
} #+I)<a7\
nEndPos[nEndPos.length-1] = nFileLength; ~<!b}Hv
} 5v<X-8"
} 'mx_]b^O
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//启动子线程 f_y+B]?'M
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; @62QDlt;
for(int i=0;i<nStartPos.length;i++) *8ykE
{ a7KP_[_(
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), mMo<C_~w&
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Pp.qDkT
nStartPos,nEndPos,i); s
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); }A)>sQ
fileSplitterFetch.start(); QbA+\
} O{u^&V]
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7v\K,P8
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); OT/*|Pn9
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", BIyNiol$AJ
nEndPos = " + nFileLength); s"G;rcS}#
// fileSplitterFetch[nPos.length-1].start(); 94Wf ]
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//等待子线程结束 iF:`rIC
//int count = 0; H]>b<Cs
//是否结束while循环 PgZeDUPP
boolean breakWhile = false; ~{MmUp rS
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while(!bStop) :"BZK5{8
{ eF)vx{s
write_nPos(); R?bF
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Utility.sleep(500); =fy~-FN_
breakWhile = true; aDr46TB`J
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for(int i=0;i<nStartPos.length;i++) QI\ &D)
{ pi`sx[T@{Z
if(!fileSplitterFetch.bDownOver) NKae~ 1b
{ ;yh}$)^9
breakWhile = false; w
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break; 7kbeAJ+{
} erG@8CG
} %*4Gx +b
if(breakWhile) n- cEa/g
break; P\#z[TuHKC
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//count++; b.Wf*I?
//if(count>4) 6@ `'}
// siteStop(); [p3)C<;ZC
} N[G<&f9
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System.err.println("文件下载结束!"); Y>eypfK"
} 0:<dj:%M
catch(Exception e){e.printStackTrace ();} ?V|t7^+:
} t-#Y6U}b+
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//获得文件长度 {eR,a-D!7
public long getFileSize() v&CKtk!3{
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int nFileLength = -1; 71GLqn?
try{ ?kvc`7>
URL url = new URL(siteInfoBean.getSSiteURL()); -u6`B-T
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); T""y)%
httpConnection.setRequestProperty("User-Agent","NetFox"); GdN'G
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int responseCode=httpConnection.getResponseCode(); VU>s{_|{
if(responseCode>=400) ~O{sOl
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{ ,^JP0Vc*
processErrorCode(responseCode); VN=S&iBa/
return -2; //-2 represent access is error x
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} VK9I#
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String sHeader; G6X
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for(int i=1;;i++) A/NwM1z[o)
{ H9)$ #r6i
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 64s9Dy@%F
//Utility.log(in.readLine()); Gq5)>'D?
sHeader=httpConnection.getHeaderFieldKey(i); |L{<=NNs:D
if(sHeader!=null) &Vi"m!Bf
{ D]+tr%
if(sHeader.equals("Content-Length")) -0| '{
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); L4SvE^2+
break; &o/&T{t}
} g<~[k?~J
} &libC>a[
else _:om(gL
break; U[~BW[[@f
} uC G^,BQ
} {m}B=u
catch(IOException e){e.printStackTrace ();} d87pQ3e:&
catch(Exception e){e.printStackTrace ();} >VqMSe_v
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Utility.log(nFileLength); 'w.:I
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return nFileLength; "z^Ysvw&~
} ?|^1-5l3
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//保存下载信息(文件指针位置) pCf-W/v
private void write_nPos() j^ZpBN L
{ I_xJ[ALdm
try{ xPqpNs-,
output = new DataOutputStream(new FileOutputStream(tmpFile)); cZL"e
output.writeInt(nStartPos.length); s4SR6hBO
for(int i=0;i<nStartPos.length;i++) u
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{ T4Z("
// output.writeLong(nPos); ~;m~)D
output.writeLong(fileSplitterFetch.nStartPos); r3ZY`zf
output.writeLong(fileSplitterFetch.nEndPos); =KT7ZSTV
} : M0LAN
output.close(); C bG"8F|4
} \@OKB<ra
catch(IOException e){e.printStackTrace ();} nC`#Hm.V%
catch(Exception e){e.printStackTrace ();} 6?}8z
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} ~2A<fL,-
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//读取保存的下载信息(文件指针位置) \ox:/-[c\<
private void read_nPos() 1Sz5&jz
{ 3 ;.{
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try{ %XG X(
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); >1s:F5u"
int nCount = input.readInt(); ,O
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nStartPos = new long[nCount]; XNu2G19jb
nEndPos = new long[nCount]; =]W{u`
for(int i=0;i<nStartPos.length;i++) [Z
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{ #FaR?L![Y
nStartPos = input.readLong(); XfbkK )d
nEndPos = input.readLong(); pJ_Z[}d)c
} Y/Y746I
input.close(); "
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} "P<~bw5
catch(IOException e){e.printStackTrace ();} 3)0*hq&83
catch(Exception e){e.printStackTrace ();} f.+e
} NV9= ~cx
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private void processErrorCode(int nErrorCode) Bfw>2
{ (:T~*7/"
System.err.println("Error Code : " + nErrorCode); W97Ka}Y
} mg >oB/,'Z
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//停止文件下载 #On1Q:d
public void siteStop() M;Vx[s,#,
{ Vi#(x9.
bStop = true; 5QmF0z)wR
for(int i=0;i<nStartPos.length;i++) hDp'=}85@
fileSplitterFetch.splitterStop(); 5&