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/* P[#V{%f*5 **SiteFileFetch.java :*A6Ba */ 'n)M0e package NetFox; I&Yu=v/_ import java.io.*; 3::DURkjf import java.net.*; w/h?, L| ]c[80F- 'ZTE"KT public class SiteFileFetch extends Thread { .~ZNlI {K hb_YdnG G80d!*7 SiteInfoBean siteInfoBean = null; //文件信息Bean Ax=Rb
B" long[] nStartPos; //开始位置 !Lk|eGd* long[] nEndPos; //结束位置 ,Z&"@g FileSplitterFetch[] fileSplitterFetch; //子线程对象 j=
]WAjT long nFileLength; //文件长度 ~?[%uGI0h boolean bFirst = true; //是否第一次取文件 Hd2Sou4-j boolean bStop = false; //停止标志 ~iEH?J%i1r File tmpFile; //文件下载的临时信息 SZK~<@q5 DataOutputStream output; //输出到文件的输出流 .CQ
IN] iD y?CEV-3+ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 19bP0y public SiteFileFetch(SiteInfoBean bean) throws IOException (`!?p ^>A { i,<TaW*I siteInfoBean = bean; oxH S7b //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); l4L&hY^ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); w<-CKM3qe if(tmpFile.exists ()) BU<A+Pe> { i^Ep[3 bFirst = false; KosAc'/ M read_nPos(); vT\`0di~ } -'5:Cq else f{^C+t{r { |1T2<ZT nStartPos = new long[bean.getNSplitter()]; #^yw!~:{ nEndPos = new long[bean.getNSplitter()]; BT`D|< } i7mT<w>? `<b 3e(A JV(|7Sk Ol{)U;,` } F2!_Z= yZUB8erb. `|
L+a~~ public void run() r,L#JR w#- { `:-{8Vo7 //获得文件长度 L*D-RYW //分割文件 wrac\. //实例FileSplitterFetch UT==x< //启动FileSplitterFetch线程 I/pavh //等待子线程返回 1i$9x$4~E try{ na(@`(j[ if(bFirst) w[~$.FM/ { najd~%?Rs nFileLength = getFileSize(); v?-pAA)ht if(nFileLength == -1) m~(]\ { K$R1x1lc2 System.err.println("File Length is not known!"); &]16Hb~ } Z+(V'e; else if(nFileLength == -2) "_}Hzpy5k { J0C,KU( System.err.println("File is not access!"); 8`U5/!6fu } .Rd@,3 else F?T3fINR { 4WzB=C(f for(int i=0;i<nStartPos.length;i++) )+u|qT3% { #gUM%$ nStartPos = (long)(i*(nFileLength/nStartPos.length)); bF|j%If% } g5;
W6QX for(int i=0;i<nEndPos.length-1;i++) Ex&f}/F { %kKe"$)0 nEndPos = nStartPos[i+1]; &owBmpz } l`[*b_
Xt nEndPos[nEndPos.length-1] = nFileLength; B&O931E7 } m%qah>11 } PfF7*}P UyEyk$6SU hz>&E,<8q //启动子线程 _;G"{e.= fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; b_W0tiyv% for(int i=0;i<nStartPos.length;i++) vp[~%~1( { .NiPaUzc< fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), UpN:F
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), (`<l" @:_* nStartPos,nEndPos,i); )o
SFHf Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Me`jh8(K\6 fileSplitterFetch.start(); &t5pJ`$(Cy } O<)"kj 7 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Z>wg
o@z% siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); <6Y o%xt // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", c03A_2% nEndPos = " + nFileLength); 4 "@BbVYR // fileSplitterFetch[nPos.length-1].start(); .%M=dL> S^c5 RI')iz? //等待子线程结束 Q|"{<2"]U0 //int count = 0; cPPE8}PVH //是否结束while循环 1Ty{k^% boolean breakWhile = false; `N_N zH o/CSIvz1 u f.Zg;Vc while(!bStop) %$~?DDNM { Hh(_sewo write_nPos(); /IxMRi= Utility.sleep(500); 4[ "$}O5 breakWhile = true; di
"rvw;R z%hB=V!~91 V+nqQ~pJ& for(int i=0;i<nStartPos.length;i++) :05>~bn>pC { .o]vjNrd/ if(!fileSplitterFetch.bDownOver) *QG>U [ { BikmAa breakWhile = false; eg3zpgZ break; ME>OTs } $83TA><a } ']Nw{}eS` if(breakWhile) 3R
!Mfz* break; V/.Y]dN5 51*o&:eim l=Jbuc //count++; &s_[~g< //if(count>4) HfFP4#C, // siteStop(); >Yl?i&3n } '%. lY9D b*n o.eB gLaFIeF<+ System.err.println("文件下载结束!"); _Su?
VxU } XTG*56IzL catch(Exception e){e.printStackTrace ();} zbOEF } qq]ZkT} LR@rn2Z -|~6Zf" //获得文件长度 DDw H9* public long getFileSize() nBgksB*A { ?}D@{%O3T int nFileLength = -1; 5sao+dZ"| try{ m;>HUTj URL url = new URL(siteInfoBean.getSSiteURL()); ZL:nohB HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); _bHmcK httpConnection.setRequestProperty("User-Agent","NetFox"); JpvE c!cli 63#Sf$p{v &y[Od{= int responseCode=httpConnection.getResponseCode(); j="{^b if(responseCode>=400) c*'D { po}Jwx! processErrorCode(responseCode); [>A%% return -2; //-2 represent access is error fLa 7d?4 } !_QE|tVeR .RxH-]xk n-be8p)- String sHeader; *r6+Vz 2ro4{^(_ f]tc$`vb for(int i=1;;i++) [[}KCND { Du k v[/60 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); $z"3_4a //Utility.log(in.readLine()); vrXUS9i. sHeader=httpConnection.getHeaderFieldKey(i); i(Cd#1< if(sHeader!=null) 02g}}{be8 { _Jn-# du if(sHeader.equals("Content-Length")) T\eOrWt/ { t4R=$
km nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); aze}koNE break; Ms;:+JI } bF;g.-.2 } +!\$SOaR{ else K9\`Wu_qL break; 3R1v0 } Cu3^de@h } GS_'&Yj catch(IOException e){e.printStackTrace ();} 3Kc catch(Exception e){e.printStackTrace ();} ?B.>VnYZ/a R*lJe6 '#mv- /<t* Utility.log(nFileLength); ma)Y@Uw M Q|q.~x<RQ I,OEor6%R( return nFileLength; h[b;_>7 } L=nyloz,0 LE%3..
! 6}ct{Q //保存下载信息(文件指针位置) QCIH1\`jW private void write_nPos() DF|(CQs9 { -.~Dhk try{ S
'S|k7Lp output = new DataOutputStream(new FileOutputStream(tmpFile)); Lt$LXE output.writeInt(nStartPos.length); `?+lM for(int i=0;i<nStartPos.length;i++) (%=[J/F/ { ~:~-AXaMT // output.writeLong(nPos); I?}YS-2 output.writeLong(fileSplitterFetch.nStartPos); 0"]N9N;/ output.writeLong(fileSplitterFetch.nEndPos); ;^za/h>r } M >#kfSF+ output.close(); >0z(+}]3z } e~w-v"' catch(IOException e){e.printStackTrace ();} 7SO i9JU_ catch(Exception e){e.printStackTrace ();} r)UtS4 7 } _yw]Cacr\ #q'J`BC r8x<-u4 //读取保存的下载信息(文件指针位置) x?v/| private void read_nPos() Z+!._uA { =:OS"qD3l try{ V+j58Wuf DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); V+myGsr` int nCount = input.readInt(); ejP273*ah nStartPos = new long[nCount]; 4n_f7'GZg nEndPos = new long[nCount]; mcvd/ for(int i=0;i<nStartPos.length;i++) D=uU:7m { EUZ#o\6 nStartPos = input.readLong(); 2MaHD}1Jw nEndPos = input.readLong(); f}Mx\dc } ?*lpu input.close(); mxUM&`[ } Khp`KPxz% catch(IOException e){e.printStackTrace ();} k`ulDQu catch(Exception e){e.printStackTrace ();} u
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Y+ } r!A1Sfo4P P/uk]5H^
`IL''eJug_ private void processErrorCode(int nErrorCode) \@8j&],dl { Rg@W0Bc) System.err.println("Error Code : " + nErrorCode); C{AVV< } WfYu-TK* *F7ksLH|q 7~(|q2ib //停止文件下载 l>p S23 public void siteStop() |t](4 { sTeW4Hnp bStop = true; !jZXh1g% for(int i=0;i<nStartPos.length;i++) ,?s3%<\2 fileSplitterFetch.splitterStop(); $*a'[Qot# 80=6B 7` AQn], } }Fy~DsQ } Hq=5/N //负责部分文件的抓取 X.TsOoy **FileSplitterFetch.java 8Ac5K! */ 9,8}4Y=GVI package NetFox; 92zo+bc C8 [W Z#w@ /!"}T import java.io.*; 0G@sj7)] import java.net.*; ?VVtEmIN _4H
9rPhf Reci:T(_ public class FileSplitterFetch extends Thread { cZ>h [XX[ o9&&u1`M/ kaybi 0 String sURL; //File URL cF6eMml; long nStartPos; //File Snippet Start Position -UD^O*U long nEndPos; //File Snippet End Position }?^V9K- int nThreadID; //Thread's ID =P>c1T1- boolean bDownOver = false; //Downing is over cbsU!8 boolean bStop = false; //Stop identical |-kU]NJFR FileAccessI fileAccessI = null; //File Access interface 3!]S8Y*LQP )y8 u+5^ 8)n799<. public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException o\ss { s'/b&Idf8 this.sURL = sURL; |j3fS[.$ this.nStartPos = nStart; k4WUfL d this.nEndPos = nEnd; wCT. (d_ nThreadID = id; a
W1y0 fileAccessI = new FileAccessI(sName,nStartPos);//定位 L#)F00/` } u!wR FwD"Pc2 doeYc public void run() E=PmOw7b { -1^dOG6* while(nStartPos < nEndPos && !bStop) dS9L( & { YXeL7W EtVRnI@ ue?e}hF try{ ]r6S|;: URL url = new URL(sURL); +v$,/~$tI HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); DK-V3}`q} httpConnection.setRequestProperty("User-Agent","NetFox"); k.UQT^. String sProperty = "bytes="+nStartPos+"-"; >SS
YYy httpConnection.setRequestProperty("RANGE",sProperty); ZY NHVR Utility.log(sProperty); p%MH**A /"$A?}V u/W InputStream input = httpConnection.getInputStream(); PDwi] )6mf //logResponseHead(httpConnection); CVo2?ZQ II=(>G9v
v E4ce byte[] b = new byte[1024]; 8 cN[t.S int nRead; 4rpx while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) mBb;:-5 { Yfro^}f nStartPos += fileAccessI.write(b,0,nRead); _wvSLu <q //if(nThreadID == 1) w0`aW6t# // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _T[7N|'O } iv3=J
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y!F 2h Wtpus Utility.log("Thread " + nThreadID + " is over!"); A}./ ;[ bDownOver = true; \J@i:J6x$1 //nPos = fileAccessI.write (b,0,nRead); |ATz<"q> } WX2:c,%: catch(Exception e){e.printStackTrace ();} 3}U {~l!K } ?ks3K-.4 } @(k}q3b< 2@&|/O6_\h
RXo!K iQO //打印回应的头信息 j%7N\Vb public void logResponseHead(HttpURLConnection con) tXlo27J { 1Z.
D3@ for(int i=1;;i++) hT
c
VMc { gmF Cjs String header=con.getHeaderFieldKey(i); ;;A8*\*$ if(header!=null) ):LgZ4h //responseHeaders.put(header,httpConnection.getHeaderField(header)); P~"e=NL5 Utility.log(header+" : "+con.getHeaderField(header)); 4<P=wK=a8X else u1@&o9 break; HLD8W8 } -o\o{?t, } xbZx&`( 16;r+.FB' n2e#rn public void splitterStop() U/9i'D[|{ { "4`i]vy8 bStop = true; 5"5tY } Nn`l+WA3 P1gW+*? YU*u! } QL_vWG- xEULV4Qw }8joltf /* C2l=7+X#W **FileAccess.java 2N)siH *//文件访问(定位,写) PTt#Ixn, package NetFox; .mr&zq import java.io.*;
>M2~BDZ 7yUtG^'b @y"/hh_? public class FileAccessI implements Serializable{ DQ#rZi3I df85g //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 8[PD`*w RandomAccessFile oSavedFile; 3e)W_P*0? long nPos; t[dOWgHi ;7;=)/- +-s$Htx public FileAccessI() throws IOException eUY/H1 { { :^;byd this("",0); -k4w$0) } R]LRgfi9 5ov F$qn D7X8yv1 public FileAccessI(String sName,long nPos) throws IOException N9SC\ { 6}(;~/L oSavedFile = new RandomAccessFile(sName,"rw"); %a'Nf/9=: this.nPos = nPos; <`PW4zSI oSavedFile.seek(nPos); a/@F?\A } !Dc|g~km\ V:YN! bi@z<Xm% public synchronized int write(byte[] b,int nStart,int nLen) :!'!V>#g {
+n'-%?LD& int n = -1; FZk=-.Hk try{ %ZKP d8 oSavedFile.write(b,nStart,nLen); ?QJS6i'k n = nLen; hggP9I:s, } IasWm/ catch(IOException e) d ynq)lf { 5{PT e.printStackTrace (); /i[1$/* } b6]MJ0do 3dl#:Si ?3duW$` return n; B.Szp_$ } l?f%2:}m XCN^>ToD SV?^i ` } Y&![2o.Q
spX*e1 B(eC|:w[z /* *wfb~&:} **SiteInfoBean.java Y<ZaW{% */ [iO*t,3@h package NetFox; I:l/U-b7h C6PlO d~|/LR5 public class SiteInfoBean { 8:9/RL\"x ?q*,,+'0 PLV-De private String sSiteURL; //Site's URL $2kZM4 private String sFilePath; //Saved File's Path ;YfKG8(0 private String sFileName; //Saved File's Name ?D\6@G:,#@ private int nSplitter; //Count of Splited Downloading File m9Pzy^g1 ,f[`C-\Q% 3*v&6/K public SiteInfoBean() Gg,&~
jHib {//nSplitter的缺省值为5 gP13n!7 //default value of nSplitter is 5 '(6
^O= this("","","",5); >V,i7v*? } Z=I+_p_G 2[V9`r8* qQ{i2D%)?f public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) +YX*.dW { U65a_dakk sSiteURL= sURL; *"HA=-Z; sFilePath = sPath; > &V Y sFileName = sName; [YTOrN this.nSplitter = nSpiltter; N!Q~?/!d g[%iVZ !vY5X2?tr, } `Lr I^9Z
_!K@(dl Qt~QJJN?oF public String getSSiteURL() &*\-4)Tf { 'CfM'f3uu return sSiteURL; `pJWZ:3 } Py!
F Z/*X)mBuB LJh^-FQ public void setSSiteURL(String value) !l7D1i~ { -*nd5(lY& sSiteURL = value; HX`>"
?{ } l`b%imX
S [=l/3c Y@#rGV> public String getSFilePath() qrLE1b 1$ { wRCv?D`vV return sFilePath; :9.QhY)D } nuucYm%IF- |%tI!RN): |9;MP&68 public void setSFilePath(String value) ixjhZk i< { Mv 1V
Vk sFilePath = value; 8j^3_lD } M!#[(: #^zUaPV 7r 0Vwl\,7z9 public String getSFileName() hAvX{] { 9`|
^cL*6 return sFileName; g+zfa.wQ } xU(yc}vw, %AV[vr, ;#+Se,) public void setSFileName(String value) (\A~SKEX { iqAME%m sFileName = value; >=VtL4K^ } VYAz0H1-_ QZO9CLX 8k 92pl#Igt public int getNSplitter() qCUn.
mI { vbMt}bM(GD return nSplitter; rd0[(- } t)n}S;iD [Fo"MeH?R sR*.i?lN public void setNSplitter(int nCount) w"/RI#7. { rD*CLqK nSplitter = nCount; ,f3Ck*M } =(\xe|
Q } ](tv`1A,Wd O~L/>Ya iI@m e= /* {T(z@0Xu **Utility.java "<^]d~a_ */ JQdeI+ package NetFox; okSCM#&:[2 a?gziCmS?C jC3)^E@:" public class Utility { 8r-'m%l <}z,!w8 nLjc.Z\Bl public Utility() .`5BgX7W { 4.o[:5' #CcWsI>+w> o0`|r+E\ } k,M%"FLQ |j>fsk~ //线程睡眠 Xx;4 public static void sleep(int nSecond) !^*-]p/z {
U%zZw) try{ oHvVZ Thread.sleep(nSecond); $9In\x
} cpe/GvD5] catch(Exception e) `xm4?6 { `GQ'yv e.printStackTrace (); k2t#O%_f } Im0 #_
\ } J[7|Ul1
< {I"`( //日志 9 ! 6\8 public static void log(String sMsg) ?=^M(TA; { H6! <y- System.err.println(sMsg); iTpU4Qsj } <&Q(I+^ 7$HN5T\! P3u,)P& public static void log(int sMsg) 1~_&XNb& { w=K!U] System.err.println(sMsg); c=Y8R/G< } " +n\0j; } @!MhVNS_< /'uFX, SPEDN}/^ /* [ta3sEPjs **TestMethod.java @ApX43U( */ -|\SNbPTV package NetFox; 'D1Sm&M2%e :!nBTw QZ:xG:qyk; public class TestMethod { 0A.PfqYi wO&2S-;_K ++ZtL\h{7 public TestMethod() 6;^ e { ///xx/weblogic60b2_win.exe TP-<Lhy try{ H.R7,'9 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 2B<0|EGtzw //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); '
+*,|;? SiteFileFetch fileFetch = new SiteFileFetch(bean); (bBr O74lR fileFetch.start(); KWzJ } Z.v2!u catch(Exception e){e.printStackTrace ();} Ag#o&Y 7\e96+j|f pS
C5$a( } ;{e=Iz}/ |4tnG&= LG6k
KG public static void main(String[] args) g3"eEg5 NY { YR$)yl new TestMethod(); zEu15!~ } &GetRDr } KE
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