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/* SY@;u<Pd **SiteFileFetch.java E1w8d4P,G */ 'X4)2iFV package NetFox; Oi@|4mo import java.io.*; 7@k3-?q import java.net.*; U1rr=h
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W@~ n`jG[{3t& public class SiteFileFetch extends Thread { Rz&}e@stl 1M55!b | (,{&\ SiteInfoBean siteInfoBean = null; //文件信息Bean =Uo*-EH long[] nStartPos; //开始位置 utn,`v long[] nEndPos; //结束位置 bcxR7<T,"9 FileSplitterFetch[] fileSplitterFetch; //子线程对象 ,I]]52+?4 long nFileLength; //文件长度 tqp i{e boolean bFirst = true; //是否第一次取文件 0G Q8}r boolean bStop = false; //停止标志 6g#E/{kQw File tmpFile; //文件下载的临时信息 zF? 6" DataOutputStream output; //输出到文件的输出流 iO18FfM_ -r~9'aEs //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) <*/Z>Z_c2 public SiteFileFetch(SiteInfoBean bean) throws IOException b=Ektq { @LS%uqs siteInfoBean = bean; [a~@6*= //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 3Q7PY46 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 7Xh @%[ if(tmpFile.exists ()) )"2eN3H/ { ,4-],~T bFirst = false; tuY=)? read_nPos(); 9JILK9mVO } 8|L 5nQ else *&+zI$u( { W(-son~I nStartPos = new long[bean.getNSplitter()]; e(&u3 #7Nn nEndPos = new long[bean.getNSplitter()]; a^[s[j#^, } h\~!!F +;oR_]l qa8?bNd'f fgF@ x } /V]i3ac &arJe!K /_8nZVu public void run() #8BI`.t)j { X_Pbbx_j //获得文件长度 z-sq9Qp&x //分割文件 GyFA1%(o //实例FileSplitterFetch \~U:k4 //启动FileSplitterFetch线程 e~R_ bBQ0 //等待子线程返回 a6It1%a+ try{ MFWkJbZV if(bFirst) y;P%=MP { V;Ln|._/t nFileLength = getFileSize(); [`bK {Dq2 if(nFileLength == -1) /,$V/q+ { %* gg6Q System.err.println("File Length is not known!"); |'x"+x } N\?__WlBK7 else if(nFileLength == -2) 0Xn,q]@Z { pDhUD}1G System.err.println("File is not access!"); ;DKJ#tS}" } 6Tm7|2R else )?LZg<< { wCj)@3F for(int i=0;i<nStartPos.length;i++) hwi_=-SL { pm[i#V<v nStartPos = (long)(i*(nFileLength/nStartPos.length)); 66_=bd(9 } |X6R2I for(int i=0;i<nEndPos.length-1;i++) Rz*GRe { 6 lEv<)cC nEndPos = nStartPos[i+1]; vuJEPn% } AOV{@b( nEndPos[nEndPos.length-1] = nFileLength; _?I*::
I } P/q]
u } <R_)[{ 7 "%_T7A ![ <w?k<%( 4 //启动子线程 ;W\?lGOs{ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; (_gt!i{h for(int i=0;i<nStartPos.length;i++) Y\4B2:Qd9 { hb}Qt Q fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), iYlkc siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), :<5jlpV( nStartPos,nEndPos,i); <HpUP!q8v Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Ufor> fileSplitterFetch.start(); t"MrrK>T } P1Iy>%3 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), r-]%R:U* siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); w:=:D=xH2 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 6
Pdao{P nEndPos = " + nFileLength); q{f (T\ // fileSplitterFetch[nPos.length-1].start(); 5as5{"l 'cc{sjG "\5 T
6 //等待子线程结束 GsiKL4|mj //int count = 0; h1f 05 //是否结束while循环 HoeW6U V boolean breakWhile = false; T;S6<J ]kO|kIs :1]J{,VG while(!bStop) 1vJj?Uqc { |PGTP#O< write_nPos(); 95ix~cH3q Utility.sleep(500); EDF0q i breakWhile = true; .%M80X{5~ dqFp"Xe"% .CW,Td3f! for(int i=0;i<nStartPos.length;i++) _E/ { 0c,!<\B if(!fileSplitterFetch.bDownOver) @V^5_K { 2a 7"~z~ breakWhile = false; b+$wx~PLi break; ;r.#|b } 0eK>QZ_ } oc[z dIk if(breakWhile) {)Shc;Qh break; um2}XI Wq}W )E nmyDGuzk //count++; >Y|P+Z\7 //if(count>4) by,3A // siteStop(); ~|LAe-e" } Eb5BJ-XeS^ l=#b7rBP /2tPd System.err.println("文件下载结束!"); J?hs\nA } -q&,7'V catch(Exception e){e.printStackTrace ();} $)6M@S } Wo,93] 0 ;4 YU%u Qx_N,1>S //获得文件长度 TnQW~_: public long getFileSize() l701$>> { \vS >jB int nFileLength = -1; z&jASL try{ 2NB$(4/ URL url = new URL(siteInfoBean.getSSiteURL()); 8CH9&N5W5t HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 6#a82_ httpConnection.setRequestProperty("User-Agent","NetFox"); C+dz0u3s 'X?Iho :dxKcg7 int responseCode=httpConnection.getResponseCode(); 8;,|z%rS" if(responseCode>=400) X `F>kp1 { Q"3gvIyc processErrorCode(responseCode); O2U}jHsd return -2; //-2 represent access is error [EK^0g } X|}Q4T` =p:~sn# 5Y@Hb!5D String sHeader; O]@s`w IfY?P(P ]c]^(C for(int i=1;;i++) TJZar Nc$ { _!w69>Nj //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 9Q7342 //Utility.log(in.readLine()); Zvra > % sHeader=httpConnection.getHeaderFieldKey(i); u EERNo& if(sHeader!=null) +HgyM0LFg { ^SM5oK if(sHeader.equals("Content-Length")) u7 <VD { *uKYrs [ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader));
u_FN'p=. break; BQs\!~Ux2 } !"'6$"U\K } t oM+Bd:Y else RS@G.| break; :u)Qs#'29 } [*5hx_4%B } qt4%=E;[ catch(IOException e){e.printStackTrace ();} :lK8i{o catch(Exception e){e.printStackTrace ();} Mq#Hi9SKY .LbAR
u abS3hf Utility.log(nFileLength); Q:'r
p BH}M]<5 *_H]?& return nFileLength; ,8cVv->u/ } y
k\/Cf ,kl``w|1M ~4xn^.w //保存下载信息(文件指针位置) k?1e+ \ private void write_nPos() y'z9Ya { ?JW/Stua try{ Jid_&\ output = new DataOutputStream(new FileOutputStream(tmpFile)); o"kL,& output.writeInt(nStartPos.length); _lC0XDZ for(int i=0;i<nStartPos.length;i++) 2Zg%4/u,Zp { g[\8s~g, // output.writeLong(nPos); -"XHN=H output.writeLong(fileSplitterFetch.nStartPos); 7|o}m}yVx output.writeLong(fileSplitterFetch.nEndPos); %zhSSB=BJ } 3T[zieX output.close(); ,vBB". LY' } zz8NBO catch(IOException e){e.printStackTrace ();} z(#dL>d$' catch(Exception e){e.printStackTrace ();} n;~'W*Ln0 } Qo*OC 9E` 1)f < >gl.ILo //读取保存的下载信息(文件指针位置) o> &-B.zq private void read_nPos() +6n\5+5 { iP1yy5T try{ BL-7r=Z DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 6_:KFqc W int nCount = input.readInt(); def\=WyK nStartPos = new long[nCount]; x&$8;2&. nEndPos = new long[nCount]; Digx#'#jf for(int i=0;i<nStartPos.length;i++)
!FvL2L { G+\&8fi0 nStartPos = input.readLong(); i?|u$[^=+ nEndPos = input.readLong(); kovJ9 } .&h|r>*|J input.close(); Sw>,Q-32 } t@iw&>8z catch(IOException e){e.printStackTrace ();} \VypkbE+ catch(Exception e){e.printStackTrace ();} $y UPua/- } N Ff`V 0W~1v L(C0236r private void processErrorCode(int nErrorCode) f>m! }F: { #IJ6pg>K System.err.println("Error Code : " + nErrorCode); X +/^s) } \KKE&3= ~y/qm
[P }*vE/W //停止文件下载 ']Z%6_WF public void siteStop() kPO+M~+n { w8#ji 1gX bStop = true; 162Dj$ for(int i=0;i<nStartPos.length;i++) UlPGB2B fileSplitterFetch.splitterStop(); 3PkU>+.6 08g2? 5w" 6w_TL<S } =%B}8$.| } *o<|^,R //负责部分文件的抓取 O>9-iqP>`d **FileSplitterFetch.java M}
+s_h9 */ 2;w> w#}> package NetFox; Ci2*5n< lbh7`xCR <<-BQ
l~ import java.io.*; (%9J(4 import java.net.*; zKh <zj ViUx^e\ L^2wEF public class FileSplitterFetch extends Thread { hI*6f3Vn(n 'u_j5 W'e{2u String sURL; //File URL TxTxyYd long nStartPos; //File Snippet Start Position T iJ \J{ long nEndPos; //File Snippet End Position gb}ov** int nThreadID; //Thread's ID }^*`&Lh boolean bDownOver = false; //Downing is over =>O{hT^F boolean bStop = false; //Stop identical uX6rCokr FileAccessI fileAccessI = null; //File Access interface &
sXMB sXY{g0% o?aF public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException wBEBj7(y { FMitIM*]
this.sURL = sURL; 7Oi<_b this.nStartPos = nStart; t&IWKu# this.nEndPos = nEnd; >;}(?+|f nThreadID = id; X9rao n fileAccessI = new FileAccessI(sName,nStartPos);//定位 KXBTJ& } g3Ul'QJ 7_eV.'h L:.Rv0XT public void run() {yMkd4v { V8Z@y&ny while(nStartPos < nEndPos && !bStop) ZbH_h]1$D { j_b/66JyN iaQFVROu Z5`V\$ try{ QJI]@3
Y URL url = new URL(sURL); EEvi_Z932 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ]
^J httpConnection.setRequestProperty("User-Agent","NetFox"); ~h%H;wC& String sProperty = "bytes="+nStartPos+"-"; q35=_'\W httpConnection.setRequestProperty("RANGE",sProperty); g<:TsP'| Utility.log(sProperty); N1U.1~U v7@*dg ciW;sK8 InputStream input = httpConnection.getInputStream(); <Rz[G+0S= //logResponseHead(httpConnection); 7(H?3)%0 SE$l,Z"[*b 9MbF: byte[] b = new byte[1024]; _6]tbni?v int nRead; U?Vik while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) T`c:16I { \t? ;p-+ta nStartPos += fileAccessI.write(b,0,nRead); CYM>4C~>JW //if(nThreadID == 1) v(,YqT>q@U // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); m`4N1egCt } q^L"@Q5; o ,8;=f,7 +KIBbXF7 Utility.log("Thread " + nThreadID + " is over!"); _9S"rH[ bDownOver = true; q~{O^,4S //nPos = fileAccessI.write (b,0,nRead); *]DO3Zw' } iZ(JwY catch(Exception e){e.printStackTrace ();} 9|K:\!7 } 0Cyus } VI.Cmw~S uTy00`1 C @P$RVS //打印回应的头信息 -y/Y%]%0 public void logResponseHead(HttpURLConnection con) T6\d] { Ze?H for(int i=1;;i++) }xgs]\^,73 {
7uzc1}r String header=con.getHeaderFieldKey(i); i{r[zA]$ if(header!=null) Z,>owoP4 //responseHeaders.put(header,httpConnection.getHeaderField(header)); (T.j3@Ko Utility.log(header+" : "+con.getHeaderField(header)); ixqvX4vv,B else |WgFLF~k break; &7eN
EA } 6?/f$,v } =$_kkVQ$ s|R`$+'{ `*B6T7p1 public void splitterStop() ^Jc|d,u;s { 1=^| bStop = true; ayN[y } LVy (O9g 6g)CpZU O`;o"\P< } Z[kVVE9b? Krr51`hZH | }d+BD /* MQX9BJ% **FileAccess.java |"}rC >+ *//文件访问(定位,写) A|m0.'/ package NetFox; QjTs$#eMW import java.io.*; -r[O_[g w :GM3n$ Y*S(uqM public class FileAccessI implements Serializable{ d[p?B-7% 0.B'Bvn=s2 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 m4R:KjN* RandomAccessFile oSavedFile; $-39O3 long nPos; ^+Vf*YY
8 /^`do3a} LXRIo2ynuw public FileAccessI() throws IOException o3le[6C/8= { A=np?wc this("",0); 6L-3cxqf\ } z
AY
-Y WT1d'@LY Q6CVMYT public FileAccessI(String sName,long nPos) throws IOException +,eF(VS! { 8P}
a oSavedFile = new RandomAccessFile(sName,"rw"); RuOse9 this.nPos = nPos; <"7Wb"+ oSavedFile.seek(nPos); Pe@*')o* } >{"E~U = @lM* Uf|@h public synchronized int write(byte[] b,int nStart,int nLen) cfHtUv { nDz.61$[ int n = -1; ,
ksr%gR+ try{ 9ol&p> oSavedFile.write(b,nStart,nLen); RVr5^l;" n = nLen; 1\/^X>@W{ } *tl; 0<n catch(IOException e) ",S146Y+ { ~@"H\):/ e.printStackTrace (); 5W09>C>OC } u_Xp\RJ id>2G
%Tx *^ua2s. return n; 2
yRUw } ixB"6O 'lOpoWDL c']m5q39' } :{aiw?1 +O7GgySx HzAw
rC /* S|m|ulB **SiteInfoBean.java sLc,Dx"+ */ N <M6~ package NetFox; bDq<]h_7 xr31<4B WFvVu3 public class SiteInfoBean { ".kH5(: W A#y& zuJ@@\75 private String sSiteURL; //Site's URL m=60a@o] private String sFilePath; //Saved File's Path g2YE^EKU~ private String sFileName; //Saved File's Name z#6(PZC} private int nSplitter; //Count of Splited Downloading File ,]tMZ?n8 m-Qy6"eW Xj<xen( public SiteInfoBean() r>6FJ:Tx {//nSplitter的缺省值为5 P6`LUyz3 //default value of nSplitter is 5 a._>?rVy this("","","",5); vJ>o9:(6 } ((6?b5[ {v2[x W Ys<z% public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) q<cxmo0S { >oapw5~5 sSiteURL= sURL; <Kk?BRxi sFilePath = sPath; Xc<Hm sFileName = sName; !^Q4ZL,- this.nSplitter = nSpiltter; ;Ao`yC2(v sRC?l_n; S) `@)sr } qCm8R@ 5e^z]j1Yv 5a:YzQ4 public String getSSiteURL() OUy}1%HY { 9 6%N return sSiteURL; n
m.5!. } !14l[k+\ -`1)yhS -2Dgr\M public void setSSiteURL(String value) 'wo}1^V { X*`b}^T sSiteURL = value; 6Z;D`X,5 } "||'
-(0 Rpxg
5 {#z[iiB public String getSFilePath() fbJa$ { Eg1|Kg\& return sFilePath; [=>[ 2Ty } 4H`B]Zt7 HC|
]Au w]US-7 public void setSFilePath(String value) 5.lg*vh { u|(Iu}sE= sFilePath = value; jOL=vG } lN_b&92 gj82qy\: -'Z-8 public String getSFileName() fBKN?]BdN { (Vt5@25JW return sFileName; 4Td)1~zc3 } )#,a'~w h3Nbgxa. -$`q:j public void setSFileName(String value) YOtzja]~ { eH%i8a sFileName = value; y_T%xWK5 } h@Ix9!?+ jgBJs^JgYG n%6=w9.%c public int getNSplitter() H^g&e$d0 { Vr #o]v return nSplitter; 7/dp_I}cO } b6'ZVB |pE
~ X rut[)H public void setNSplitter(int nCount) . Fm| $x { q0@b d2} nSplitter = nCount; }{.V^; } fF.+{-. } +B4 i,]lCx R[H#av \M~uNWv| /* B X O, **Utility.java 9/O\769"' */ m
[BV{25 package NetFox; \mw5
~Rf; >dwY(a H h%|}*f_, public class Utility { |Rb8/WX #2%8@?_-M *\^(-p~M public Utility() pK)!o { q[c^`5 _+ >V(,{G _FN#Vq2 } Qi|k,1A0 y~wN: //线程睡眠 %%lJyLq'Vk public static void sleep(int nSecond) && WEBQ { r`PD}6\ try{ +SkfT4*U Thread.sleep(nSecond); ePTxuCf> } >vNE3S_ catch(Exception e) $Eo-58<q { s2 $w>L e.printStackTrace (); J$,bsMIX } ]MB6++.e } J n'SGR /Y| <0tq //日志 zn5|ewl@" public static void log(String sMsg) hdYd2
j { YH&0Vy#c$ System.err.println(sMsg); VRUA<x } l^rQo_alk Y\E7nll:. [vxHsY3z public static void log(int sMsg) {%6g6?=j { ,jeC7-tX System.err.println(sMsg); <,Jx3yq } 24
RD } 5]2 p>%G Gl9,!"A &PFK0tY /* _[N*k" **TestMethod.java Y$W)JWMY` */ [!`5kI package NetFox; 0_-P~^A kk}_AZ0eK A1B%<$|pz public class TestMethod { E|_}?>{R k!d<2Qp W `{Fz public TestMethod() igF<].'V { ///xx/weblogic60b2_win.exe 0*6Q8`I try{ gN[^ ,u SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Tj!rAMQk //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); A&X
XL~yH SiteFileFetch fileFetch = new SiteFileFetch(bean); 8*&YQId~ fileFetch.start(); ,Eo\(j2F. } (SByN7[gb catch(Exception e){e.printStackTrace ();} J#\oc@ W4)bEWO+q yn.[- } cuL/y$+EY u"DE? CM)V^k* public static void main(String[] args) <>V~ { Ka$lNL3<j new TestMethod(); s$ ?;C } T
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