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/* !h?=Wv
==] **SiteFileFetch.java _;#9!"& */ JfSdUWxT package NetFox; Y^yG/F import java.io.*; f*v1J<1# import java.net.*; uC)Zs, _5 E_]k>bf\ 2!BsEvB( public class SiteFileFetch extends Thread { x+K gc[r `wf|u M ]?M)NRk%S SiteInfoBean siteInfoBean = null; //文件信息Bean !n:uiwh long[] nStartPos; //开始位置 ;c$@@l long[] nEndPos; //结束位置 u|T%Xy=LU FileSplitterFetch[] fileSplitterFetch; //子线程对象 L*9H#%3 long nFileLength; //文件长度 ;HP#bx boolean bFirst = true; //是否第一次取文件 /-><k,mL? boolean bStop = false; //停止标志 t|<FA# File tmpFile; //文件下载的临时信息 ZOC#i i`: DataOutputStream output; //输出到文件的输出流 V\"1wV~E Tn /Ut}]O //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) lf6|. public SiteFileFetch(SiteInfoBean bean) throws IOException
9|<Be6 { .N!{ U siteInfoBean = bean; m!0N"AjA //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); x_k S
g tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); JA< :K0 if(tmpFile.exists ()) UDMyyVd { 8!;$qVt bFirst = false; lJUy;yp_+ read_nPos(); v iJJ
e'\2 } 8ZW?|-i else "9%qbMB { >gnF]< nStartPos = new long[bean.getNSplitter()]; Qww^P/vm nEndPos = new long[bean.getNSplitter()]; GZ"&L?ti } Vha'e3o! F;-90w 'g~@"9'oe _;7fraqX } gJK KR]4* ><K!~pst} Tt%}4{"
public void run() fx]eDA|$e { VyY.r#@ //获得文件长度 Qm; BUG] //分割文件 QkL@JF]Re //实例FileSplitterFetch JtFiFaCxY //启动FileSplitterFetch线程 iE=P'"I //等待子线程返回 P:^=m*d try{ VGB-h' if(bFirst) M%|f+u & { Je@k iE nFileLength = getFileSize(); Yg&`
U^7]B if(nFileLength == -1) <wa(xDBw { !*_K.1' System.err.println("File Length is not known!"); r@yD8 D \ } JjQVzkE else if(nFileLength == -2) CL1
oAk { l2s{~ IC System.err.println("File is not access!"); r:NH6tAL } 'in@9XO else vK:QX$b { NpR6 for(int i=0;i<nStartPos.length;i++) nj { ZV(
w nStartPos = (long)(i*(nFileLength/nStartPos.length)); n,sY\=vB } . ,R4WA, for(int i=0;i<nEndPos.length-1;i++) wVE:X3Ei { : u-.T.zZl nEndPos = nStartPos[i+1]; OXCQfT@\ } cix36MR_ nEndPos[nEndPos.length-1] = nFileLength; +Vy_9I(4Z } d;44;*D } ?:/|d\,7@ Egf^H>,.M ="3,}qR //启动子线程 )x[HuIRaa fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Hk9U&j$ for(int i=0;i<nStartPos.length;i++) > 0T
Za { Q;wB{vr$ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 5r7h=[N siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), c&m9)r~zP nStartPos,nEndPos,i); gc,Ps Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ;RHNRVP fileSplitterFetch.start(); c3W
BALdh } gl
"_:atW // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), jI0]LD1k siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); J*K<FFp3< // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", n| C|& nEndPos = " + nFileLength); agT7=hX]. // fileSplitterFetch[nPos.length-1].start(); 2*Q3.2 Z TGpSulg7 Y`^o7'Z2^P //等待子线程结束 /[?Jylj //int count = 0; t7^D-l //是否结束while循环 P7r4ePtLk{ boolean breakWhile = false; p:tN642 Noz&noq enumK\ while(!bStop) oIxH 3T { {:)vwUe{ write_nPos(); )E-E0Hl>7 Utility.sleep(500); .eY`Ri<3t breakWhile = true; De]^&qw( n1 v,#GE W>$BF[x!{ for(int i=0;i<nStartPos.length;i++) }#
Xi`<{ { I.a0[E/, if(!fileSplitterFetch.bDownOver) [gZDQcU { u`6/I#q` breakWhile = false; VDa|U9N break; a(|xw } +?V0:Kz] } !tBeuemN% if(breakWhile) U`1l8'W}:# break; 0'@u!m? N&x:K+Zm. =G>.-Qfs //count++; PG"@A //if(count>4) QnU0"_- // siteStop(); kwF] TO
S } _:%U_U /RqhykgZ ?l9=$' System.err.println("文件下载结束!"); 4=s9A } 9[sG1eP! catch(Exception e){e.printStackTrace ();} $3 vhddO } =qX*] :l`i4kx !7c'<[+Hm //获得文件长度 [TEcg^ public long getFileSize() LU(%K{9 { 8f-:d] int nFileLength = -1; h?A'H RyL~ try{ \k4pK &b URL url = new URL(siteInfoBean.getSSiteURL()); :d({dF_k;p HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); )-q\aX$]) httpConnection.setRequestProperty("User-Agent","NetFox"); C fSl
54 eJ:Yj
~X`< H/`G int responseCode=httpConnection.getResponseCode(); A;T[[' if(responseCode>=400) P}l#VJWp { iD`k"\>9 processErrorCode(responseCode); ^9'$Oa,* return -2; //-2 represent access is error 3SFg# } >fbo
r'| gLx/w\l6 yLB~P7K String sHeader; YLmjEs% RpAiU %yvA for(int i=1;;i++) HT&p{7kFm { _4!{IdR //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); e{JVXc[D //Utility.log(in.readLine()); 1vsu[n sHeader=httpConnection.getHeaderFieldKey(i); fCr\u6Tb if(sHeader!=null) ZYDWv/u { &N9IcNP if(sHeader.equals("Content-Length")) D2)i3vFB { /yp/9r@T0 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); v~aLTI break; -nGwuEngP } |=u96G~N } W]@6=OpH else IhwN],-V break; Ysl9f1>% } ke^d8Z. } hMWo\qM catch(IOException e){e.printStackTrace ();} yYk|YX(7U catch(Exception e){e.printStackTrace ();} w#<p^CS jOv~!7T {!y<<u1 Utility.log(nFileLength); LGfmUb-{] N;g$)zCV1 NFV_+{X\ return nFileLength; CdNih8uG } *k4+ioFnKE ZBC@xM&- <uC<GDO //保存下载信息(文件指针位置) ? osfL private void write_nPos() h&P
{p _Y { {Y^c*Iqn try{ z
7@ 'CJ output = new DataOutputStream(new FileOutputStream(tmpFile)); x*J|i4 output.writeInt(nStartPos.length); 4M7^
[G for(int i=0;i<nStartPos.length;i++) ^9s"FdB]24 { 4/f[`].#W // output.writeLong(nPos); W%WC(/hor output.writeLong(fileSplitterFetch.nStartPos); 7g8B'ex J output.writeLong(fileSplitterFetch.nEndPos); %pqL-G } UC(9Dz output.close(); 5c)<'EP } )6g&v'dq catch(IOException e){e.printStackTrace ();} BPqwDjW catch(Exception e){e.printStackTrace ();} 1MpX] j8C# } C-r."L ,;c{9H -C=]n<ak //读取保存的下载信息(文件指针位置) [C2kK *JZ private void read_nPos() \DaLHC~ { N:d
D*[QZ try{ hg{ &Y(J!U DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ?f9$OLEB int nCount = input.readInt(); (%.</|u nStartPos = new long[nCount]; VSx%8IM+X nEndPos = new long[nCount]; bIq-1
Y( for(int i=0;i<nStartPos.length;i++) 1BTgGF { |KTpK(6p nStartPos = input.readLong(); (5>{?dR)| nEndPos = input.readLong(); y.
Tct. } A
xRl*B input.close(); -}NAb^d } ^971<B(v catch(IOException e){e.printStackTrace ();} juR catch(Exception e){e.printStackTrace ();} 1 iquHn } p
FXd4* y{:]sHyG py}.00it private void processErrorCode(int nErrorCode) t;oT {Hge { 1`nc8qC System.err.println("Error Code : " + nErrorCode); xu`d`!Tx } %+D-y+hn *1R##9\jU7 q#.rYzl0 //停止文件下载 VyRW ' public void siteStop() kbD*=d}3{ { sb8z_3 bStop = true; ?&{S~[;l for(int i=0;i<nStartPos.length;i++) fMgcK$ fileSplitterFetch.splitterStop(); Xqc'R5Cw >N :|Km\ $:xF)E } xU#]w6 } Q9Q!9B@ //负责部分文件的抓取 'O!Z:-qE **FileSplitterFetch.java V<
2IIH5^ */ Y'3kE package NetFox; ?3.(Vqwog Z $ p^v*y GZxglU,3T import java.io.*; ?v0A/68s# import java.net.*; %V@R k.< Q=)"om a15,'v$O public class FileSplitterFetch extends Thread { #L|JkBia 5q0BG!A%T ~gSF@tz@ String sURL; //File URL S7@ZtFf long nStartPos; //File Snippet Start Position U[K0{PbY long nEndPos; //File Snippet End Position @n5;|`)\ int nThreadID; //Thread's ID p~v2XdR boolean bDownOver = false; //Downing is over Rfkzv=<"X boolean bStop = false; //Stop identical kKFuTem_3 FileAccessI fileAccessI = null; //File Access interface (cPeee%Q 5n&)q=jk= 0KWy?6 X public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Eg287B { 1t~S3Q||>] this.sURL = sURL; R#[QoyJ this.nStartPos = nStart; GU;TK'Yy? this.nEndPos = nEnd; n1k$)S$iiy nThreadID = id; Vz=j)[ fileAccessI = new FileAccessI(sName,nStartPos);//定位 f 4
Sw,A } m!FM+kge c0,gfY%sI$ <;TP@-a public void run() $=@9 D,R { '&_y*"/c while(nStartPos < nEndPos && !bStop) Vsm%h^]d { h&:Q$*A> 'Wx\"]: '.}6]l try{ V29S* URL url = new URL(sURL); K~fDv i HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); SSA%1l2! httpConnection.setRequestProperty("User-Agent","NetFox"); b_K?ocq String sProperty = "bytes="+nStartPos+"-"; I;kUG_c(4 httpConnection.setRequestProperty("RANGE",sProperty); g-{<v4 NGI Utility.log(sProperty); rSc,\upz x]my e *x#&[> InputStream input = httpConnection.getInputStream(); w#gU1yu //logResponseHead(httpConnection); FS]+s> l/y
Kc8^< t?#vb}_ byte[] b = new byte[1024]; 21)-:rS int nRead; hq& while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ]y)R C-N { Ilt L@]e nStartPos += fileAccessI.write(b,0,nRead); QB.*R? A //if(nThreadID == 1) X'3`Q S:! // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); zDGg\cPj9 } U d=gdsL &d|VH y+ `)(
<g Utility.log("Thread " + nThreadID + " is over!"); ]%Q]C
8[C bDownOver = true; [/fwt! //nPos = fileAccessI.write (b,0,nRead); ;&t1FH#= } }TAGr 0 catch(Exception e){e.printStackTrace ();}
+y{93nl } bTy'5" } .xc/2:m9 ]`i@~Z h\ r* /XB0 //打印回应的头信息 Gad2EEZ%0 public void logResponseHead(HttpURLConnection con) %\zCOfN { :x*|lz[ for(int i=1;;i++) &L~31Ayj& { wor'=byh\ String header=con.getHeaderFieldKey(i); |@Idf`N$ if(header!=null) J^+$L"K //responseHeaders.put(header,httpConnection.getHeaderField(header)); /x8C70W^ Utility.log(header+" : "+con.getHeaderField(header)); b]qfcV else Mbi+Vv- break; Mpl,}Q!c } &t%&l0 } p7=^m>Z6 d`q)^ jv#" vQ9A] public void splitterStop() 'N5r2JL[w { l<MCmKuYp bStop = true; "a`0w9Mm} } 6x3Ew2 vJjj+: Vx4pP$S } <~8f0+" .=w`T
#L zvs 2j"lb /* K|J#/ **FileAccess.java <x;[ H% *//文件访问(定位,写) c$SxDYG package NetFox; zB7dCw import java.io.*; WxP4{T* < "BNmpP Ywb)h^{! public class FileAccessI implements Serializable{ ;\&bvGj8V l0bT_?LhK //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 5xV/&N RandomAccessFile oSavedFile; Mn{Rg>X long nPos; 1Y0oo jD -a^sX%|Bl 4a-F4j' public FileAccessI() throws IOException ?[fl$EG { 7Sv5fLu2 this("",0); rW>'2m6HU } .BTT*vL- a}]@o" 9-<V%eNX public FileAccessI(String sName,long nPos) throws IOException +fR`@HI { =]k_Oq-1h oSavedFile = new RandomAccessFile(sName,"rw"); "@|V.d@ this.nPos = nPos; {7s zo`U2 oSavedFile.seek(nPos); \z?;6A } g
wiC , .Zz7LG{ Iur} ZAz public synchronized int write(byte[] b,int nStart,int nLen) _4#psxl[M { 83(P_Y: int n = -1; 0#nXxkw try{ O g~"+IGp oSavedFile.write(b,nStart,nLen); t/BiZo|zl n = nLen; Gjh7cm> } <NsT[r~C catch(IOException e)
]b$,.t5 { bL[W.O0 e.printStackTrace (); 'V{k$}P2 } 4T^WRS 7ZnQ] ?
tzN;;h4C return n; X~4:sJ\P= } iR =aYT~ 6%y: hLT ^%@.Vvz< } e-meUf9 Q1B!W &y?B&4|hM /* ~q>ilnL"h **SiteInfoBean.java e28#Yh@U */ }7v2GfEkM package NetFox; eci\Q, AVZ@?aJgF 9R3=h5Y public class SiteInfoBean { +rX,Sl`/
zvj >KF|y @/iLC6QF private String sSiteURL; //Site's URL '>$A7 private String sFilePath; //Saved File's Path gf>5xf{M private String sFileName; //Saved File's Name p}z0(lQ*~ private int nSplitter; //Count of Splited Downloading File Pl6=._
!7D S bhYaG i0 public SiteInfoBean() ?A>-_B {//nSplitter的缺省值为5 u] b6> //default value of nSplitter is 5 3!x)LUWfWY this("","","",5); "de:plMofy } ?H?r!MZ% eu;^h3u;b `#bcoK5 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ma~`&\xE { W&#Nk5d sSiteURL= sURL; w6 .HvH-@? sFilePath = sPath; 7h~M&\M sFileName = sName; yhmW-#+^e this.nSplitter = nSpiltter; &jcr7{cD \266N;JrN {n'}S( } Rz]bCiD3
B E{J;-+t {HeMdGn9 public String getSSiteURL() ?K"]XXsI { E*vi@aI return sSiteURL; G
y2XjO8b } 5KzU&!Zh9 8iRQPV-"_ V
ALYA=w/ public void setSSiteURL(String value) 2~ a4ib { " B1' K8 sSiteURL = value; aHw VoT } s~CA
@ kQ+5pFo3 _U %B1s3y public String getSFilePath() L<n_}ucA { s0CRrMk return sFilePath; k?,g:[4! } IkkrnG8 _4+1c5Q! 7VraWW`H' public void setSFilePath(String value) #@G2n@Hj { O?_'6T sFilePath = value; (,>`\\ } |d$aISO` xUYSD &
CgLF] public String getSFileName() RN0Rk 8AC { S1."2AxO return sFileName; 4'M#m|V } eF9LZ"-s =g ]C9'I3 v|e>zm< public void setSFileName(String value) U
w)1yzX { R)v`ZF,/b sFileName = value; |kn}iA@72p } kDrGl{U} 'EQAG' YV Aq-v3$XL public int getNSplitter() ;Zw28!#Rt { Tb[GZ,/%; return nSplitter; /cg!Ap5 } ; -3M 2:]Sy4K{ |laqy`D public void setNSplitter(int nCount) I^o^@C { <rkF2 -K, nSplitter = nCount; >U17BGJ. } (HEjmQjE } >[#4Pb7_Y ?FLjvmE9 ?h5Y^}8Qg /* 8n56rOW! **Utility.java m+L:\mvA */ ;,<s'5icyg package NetFox; B::vOg77 TZ/u"' ZS "/q6E public class Utility { wL{Qni3A 4B|f}7%\ )_BteLo- public Utility() ?VJ Fp^Ra { )TLDNpH?J uJ%ql5XDV =Ij;I~ } :%0Z U_:/>8})d //线程睡眠 R\XJ public static void sleep(int nSecond) %c&h:7); { 3KqylC&. try{ iaMZ37 Thread.sleep(nSecond); g3y44GCV } KMZ% 1=a catch(Exception e) S_)va#b# { Dx8^V%b e.printStackTrace (); y(%6?a @ } )t|M)z J } ].$N@tC MQI6e". //日志 //`X+[bMG public static void log(String sMsg) ~ >6(@~6 { (LnKaf8 System.err.println(sMsg); \X(.%5xC } $ (GXlhA 1(-)$m8} ZqSczS7uf public static void log(int sMsg) 8garRB{ { ~; MRQE System.err.println(sMsg); lwV#j}G } 5-MI7I@l } c+q4sNnE
OH&&d=~ VlKWWQj /* O)&V}hU* **TestMethod.java Z/%>/ */ m~2PpO package NetFox; T8v>J4@t 1>n@`M8} IF<jq\M public class TestMethod { -?j'<g0 tFG&~tNc huO_ARwK' public TestMethod() -(Yq$5Zc& { ///xx/weblogic60b2_win.exe aC;OFINK try{ y3d`$'7H> SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); C}7Sh6 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); JVN0];IL} SiteFileFetch fileFetch = new SiteFileFetch(bean); xgfK0-T|[ fileFetch.start(); Z/O5Dear/h } 9OX&;O+5 catch(Exception e){e.printStackTrace ();} T$SGf.- }LOAT$]XI ?v6xaVg: } {>90d(j [/'W#x oB+drDp8U public static void main(String[] args) x2l~aw#? { e~xN[Q\0] new TestMethod(); |'.\}xt7 } BjSLbw-C } )[>{
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