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/* <5O:jd **SiteFileFetch.java jI/#NCKE */ br;~}GR_h package NetFox; .C|dGE?, import java.io.*; yU|=)p5 import java.net.*; fL(_V/p^ Q3<ctd\]Y l3N '@GO public class SiteFileFetch extends Thread { dt5`UBvUg UX24*0`\~ VV-%AS6; SiteInfoBean siteInfoBean = null; //文件信息Bean HC!5AJ&+}v long[] nStartPos; //开始位置 7<0oK|~c# long[] nEndPos; //结束位置 4D)M_O FileSplitterFetch[] fileSplitterFetch; //子线程对象 b?,''t long nFileLength; //文件长度 }Jo}K)>! boolean bFirst = true; //是否第一次取文件 fA)4'7UT boolean bStop = false; //停止标志 Ex<@: File tmpFile; //文件下载的临时信息 yYH>~, DataOutputStream output; //输出到文件的输出流 w!r.MWE G?+0#?'Y //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) * `3+x public SiteFileFetch(SiteInfoBean bean) throws IOException Owz>g4l
r { |33_=" siteInfoBean = bean; {Q021*xt/ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); bQ`2ll*( tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Z{^Pnit if(tmpFile.exists ()) }hA)p: { Lvb'qZ6n bFirst = false; h'B0rVQia> read_nPos(); Pd+Wb3 } $C
t(M) else ra
F+Bt` { 3ih:t'N- nStartPos = new long[bean.getNSplitter()]; 8;i'dF:) nEndPos = new long[bean.getNSplitter()]; Dc9Fb^]QOG }
=AP0{ F;ELsg Dco3`4pl CqLAtS X7 } 8Xa{.y" \7WZFh%: _b!
TmS#F1 public void run() +{\b&q_ { PTpGZ2FZ //获得文件长度 PNpH)'C| //分割文件 {#N,&?[ //实例FileSplitterFetch H<Zs2DP` //启动FileSplitterFetch线程 N&G;` //等待子线程返回 'XI-x[w try{ #]2,1dJ if(bFirst) RY}:&vWDk { .*Axr\x3 nFileLength = getFileSize(); wKE}BO > if(nFileLength == -1) W]5sqtF;6 { eC='[W<a. System.err.println("File Length is not known!"); $-uMWJ)l } &4m;9<8\ else if(nFileLength == -2) MtG~O;?8 { rT'<6]` System.err.println("File is not access!"); Ubv_a } \|7Y"WEQ else 3uuB/8 { 6'|NALW for(int i=0;i<nStartPos.length;i++) K7},X01^ { ub-vtRpm nStartPos = (long)(i*(nFileLength/nStartPos.length)); *#Iqz9X.Y3 } =c#;c+a for(int i=0;i<nEndPos.length-1;i++) ^,#MfF6 { "|GX%>/ nEndPos = nStartPos[i+1]; m88[(l } ]m\:XhI*< nEndPos[nEndPos.length-1] = nFileLength; S~ZRqL7ZO } ?Lem|zo } oF.H?lG7` $yZ(ws Q oWjC //启动子线程 KV|ywcGhT fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; d[&Ah~, for(int i=0;i<nStartPos.length;i++) kOV6O?h { }-PV%MNud fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), $ItPUYi"; siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ^20x\K nStartPos,nEndPos,i); #1[Q?e4,0 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); M(.]?+ fileSplitterFetch.start(); ?j$*a7[w } \l?.VE D // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), T2}ccnDi siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); u4~(0 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", nE"0?VNW$ nEndPos = " + nFileLength); M7gM#bv>L // fileSplitterFetch[nPos.length-1].start(); wb6$R};? CW@G(R &\Yd)#B/ //等待子线程结束 8_uh2`+Bvb //int count = 0; PF]Vt //是否结束while循环 EK}QjY[i boolean breakWhile = false; nEh^{6 baib_-$ pjNH0mZ while(!bStop) o[>p { y:dwx *Q9I write_nPos(); 4.'KT;[_1/ Utility.sleep(500); eo'C)j# U breakWhile = true; b*o,re)Dj jAOD&@z1 hP=z<&zb/ for(int i=0;i<nStartPos.length;i++) (N$$N:ac[t { G9jlpf5> if(!fileSplitterFetch.bDownOver) -0:B2B { hionR)R4 breakWhile = false; ,E8~^\HV break; -1 _7z{. } Wg5i#6y8w } o/p'eY:) if(breakWhile) Lz;E/a}s break; -u%'u~s P8;f^3V(+/ ;AE%f.Y //count++; fa;GM7<e) //if(count>4) <>K@#|%Y& // siteStop(); -QP&A >]7 } gfAVxMg 'gv7&$X}4 g bwg3$!9 System.err.println("文件下载结束!"); !Mk:rO-L } ,__|SnA. catch(Exception e){e.printStackTrace ();} aoS]Qp } be5NasC # fl%~Y h}$]3/5H //获得文件长度 4!tHJCq" public long getFileSize() m#(ve1E { 8v']>5S]# int nFileLength = -1; m7~[f7U try{ ^9I^A!w= URL url = new URL(siteInfoBean.getSSiteURL()); _\2^s&iJh HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 5zsXqBG httpConnection.setRequestProperty("User-Agent","NetFox"); QtsyMm O"x/O#66 i4oBi]$T int responseCode=httpConnection.getResponseCode(); Zc57] ~ if(responseCode>=400) }V
%b { \^%5! processErrorCode(responseCode); Y/w) VV return -2; //-2 represent access is error 4 4kb } P1mPC _G5MQ%z 8yc?9&/| String sHeader; zVs|go>F 7<VfE`Q3 ~+Da`Wp for(int i=1;;i++) wuTCdBu6hU { "RJf2~(ZX //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ))>)qav //Utility.log(in.readLine()); xj!_]XJ^w sHeader=httpConnection.getHeaderFieldKey(i); ^#L?HIM if(sHeader!=null) |d1%N'Ll { ?OPAf4h if(sHeader.equals("Content-Length")) c~UYs\ { _;+N=/l0 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); $0K%H break; 0IEFCDeCO } 1f1J'du } <U$A_]*w else ,/g\;#:{@] break; weiqt
*,8 } _"`U.!3* } q>q@ztt catch(IOException e){e.printStackTrace ();} xbA% 'p catch(Exception e){e.printStackTrace ();} o s
HE4x /Iu._2 jq&$YmWp Utility.log(nFileLength); L%.GKANM l@om2|B y]`@%V2P return nFileLength; &xqr&(o } 8_tMiIE-pS s/K}]F ~4iIG}Y< //保存下载信息(文件指针位置) Th%1eLQ private void write_nPos() Tl3{)(ezx { 0R2 AhA# try{ /-39od0 output = new DataOutputStream(new FileOutputStream(tmpFile)); tnmuCz output.writeInt(nStartPos.length); ft[g1 for(int i=0;i<nStartPos.length;i++) ^eEj
5Rh { B"I>mw // output.writeLong(nPos); =`X@+~%- output.writeLong(fileSplitterFetch.nStartPos); G
K @]61b output.writeLong(fileSplitterFetch.nEndPos); f. =4p^ } 'gojP output.close(); )gCHwu } [hS?d.D catch(IOException e){e.printStackTrace ();} ?Ib/}JST catch(Exception e){e.printStackTrace ();} h tn2` } t?]6>J_V %Ys>PzM #?i#q%q //读取保存的下载信息(文件指针位置) y=\jQ6Fc private void read_nPos() v}]x>f { oA~m*| try{ %1]2+_6 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); <5(8LMF int nCount = input.readInt(); .>?["e #, nStartPos = new long[nCount]; = sIR[V'( nEndPos = new long[nCount]; 9hT^Y,c0 for(int i=0;i<nStartPos.length;i++) y+?tUSPP { -i'T!Qg1 nStartPos = input.readLong(); 9kP!O_ nEndPos = input.readLong(); vmOXB#7W } 9VN@M input.close(); <E
BgHD) } +c\s%Gzrh catch(IOException e){e.printStackTrace ();} vd /_`l.D catch(Exception e){e.printStackTrace ();} KX)xCR~
} r[Q$w> 3_T'TzQu &bj :,$@ private void processErrorCode(int nErrorCode) =tH+e7it { &U xN.vl System.err.println("Error Code : " + nErrorCode); VSZ 6;&2^ } RQ{w`>K S/d})8~. S53%*7K. //停止文件下载 ["Q8`vV0WO public void siteStop() :<&}/r { DcbL$9UI bStop = true; Bw*z4qb{yH for(int i=0;i<nStartPos.length;i++) vtmO fileSplitterFetch.splitterStop(); d!KX.K\NM, !nj%n \MtiLaI" } vEzzdDwi6 } jD^L < //负责部分文件的抓取 ,0 &lag **FileSplitterFetch.java XU9=@y+|v */ ^MJGY,r6b package NetFox; hCT%1R}rKr |7`Vw Z
Uzb"$Ue4 import java.io.*; Z{p6Q1u import java.net.*; Sc6wC H YF>t {| yekIw public class FileSplitterFetch extends Thread { fe37T@ "}SERC7 Lf 0Hz") String sURL; //File URL y-n\;d>[( long nStartPos; //File Snippet Start Position
}aNiO85 long nEndPos; //File Snippet End Position ;@d%<yMf@ int nThreadID; //Thread's ID XFu@XUk!K boolean bDownOver = false; //Downing is over N0vd>b boolean bStop = false; //Stop identical ;7`<.y FileAccessI fileAccessI = null; //File Access interface g=Qga09 z{#F9'\& f6L_uk`{ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException zW0AB8l { &vMH
AZd this.sURL = sURL; INbjk;k this.nStartPos = nStart; m]-8?B1`Y this.nEndPos = nEnd; ~2H7_+.# nThreadID = id; Jl]]nOBQ/ fileAccessI = new FileAccessI(sName,nStartPos);//定位 xD\Km>|i } o~-X7)] BXfaqYb;Q "j a0,%3 public void run() uCu,'F,6Y { 3(5RUI- while(nStartPos < nEndPos && !bStop) ImV54h' { Gr6ma*)y~t )b%c]! "{x~j\< try{ K%pmE?%,8 URL url = new URL(sURL); "}OFwes HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); q5vs;,_
| httpConnection.setRequestProperty("User-Agent","NetFox"); Yip9K[ String sProperty = "bytes="+nStartPos+"-"; >|Jw,,uf httpConnection.setRequestProperty("RANGE",sProperty); jujx3rnK? Utility.log(sProperty); D} .t 3-mw-;. ?J~JQe42 InputStream input = httpConnection.getInputStream(); D@^F6am% //logResponseHead(httpConnection); bf74 " :T\WYKX3C Nu_w@T\l byte[] b = new byte[1024]; GwW#Ww;Oc int nRead; kQ#eWk J, while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) *c AoE l { `>sqP aD nStartPos += fileAccessI.write(b,0,nRead); DYWC]* //if(nThreadID == 1) N6J$z\
P // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ]JD$fS=_ } R&4E7wrdP uf;q/Wr Vd?v"2S(9 Utility.log("Thread " + nThreadID + " is over!"); m_(hCY=Q$ bDownOver = true; q~^:S~q //nPos = fileAccessI.write (b,0,nRead);
yX-xVvlv@ } s^oNQ} catch(Exception e){e.printStackTrace ();} \9}5}X_x. } @qC:% |> } |?|
u-y s{k\1P(G} 20moX7L //打印回应的头信息 xF/D YXC{8 public void logResponseHead(HttpURLConnection con) .HQ<6k:
{ 'QS"4EvdD for(int i=1;;i++) ltrSTH,kL { eurudl String header=con.getHeaderFieldKey(i); kW!:bh if(header!=null) /J+)P<_ A //responseHeaders.put(header,httpConnection.getHeaderField(header)); $0*47+f Utility.log(header+" : "+con.getHeaderField(header)); MzG ryM- else &!a2%%1#N break; f
oVD+\~Y } m4DH90~a8 } 5HbTgNI Eo Urc9G2 v$i%>tQ\ public void splitterStop() # 0!IUSa { "B}08C,? bStop = true; O0{ } 0l6iv[qu5w /K!,^Xn }}1/Ede{5 } =|!~0O ~1'468 NNE,|
: /* ;iORfUjxrq **FileAccess.java K D-_~uIF *//文件访问(定位,写) -(uBTO s package NetFox; BLH=:zb5 import java.io.*; :'dc=C 1QJ$yr N 9&@,3 public class FileAccessI implements Serializable{ Gx!RaZ1 NACY;XQ% //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 5dp#\J@ RandomAccessFile oSavedFile; "J5Pwvs- long nPos; GF!{SO4 GnOo+hB v,+l xY public FileAccessI() throws IOException h<K;VpL6 { tKeO+6 l this("",0); m[{&xF|_ } w)eQ'6Vu x#0@$ $M`;." public FileAccessI(String sName,long nPos) throws IOException IJc#)J.2A { _~nex,;r oSavedFile = new RandomAccessFile(sName,"rw"); R{o*O_qX this.nPos = nPos; #@6L|$iX oSavedFile.seek(nPos); JX)z<Dz$ } /V<`L
t MZ(s $l;tP public synchronized int write(byte[] b,int nStart,int nLen) DiQkT R { GQ0 (&I int n = -1; W79A4l< try{ c'+r[rSn1 oSavedFile.write(b,nStart,nLen); ;]M67ma7C n = nLen; 'D"K`Vw } gqD^Bs'VF catch(IOException e) 9BD|uU;0 { I!7.fuO e.printStackTrace (); W:poUG1UR } K2rS[Kdfaq z83:a)U `VFl|o#H return n; 6+;2B<II } iB3+KR f5b`gvCY,# pd>a6 lI` } ~R@m!'Ik :/[YY?pg- :
|*,Lwvd /* KHus/ M&0 **SiteInfoBean.java @*"<U] */ /-YlC(kL package NetFox; /N]Ow oZ>`Qu )4)iANH? public class SiteInfoBean { `;qv} xFm{oJ!]& +Q!xEfpO; private String sSiteURL; //Site's URL O mh&)|Iql private String sFilePath; //Saved File's Path Fl+tbF private String sFileName; //Saved File's Name ]t*P5 private int nSplitter; //Count of Splited Downloading File FV6he[, 7k t7^V< =E}%>un public SiteInfoBean() `{|}LFS> {//nSplitter的缺省值为5 &Y>~^$`J //default value of nSplitter is 5 mz VuQ this("","","",5); A[ECa{v } R`C_CsXir "">fn( %cr]ZR public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) PDq}Tq { 8P<UO sSiteURL= sURL; 9MtJo.A sFilePath = sPath; /IJ9_To sFileName = sName; FX|lhwmc( this.nSplitter = nSpiltter; V0'p1J tD .FbZVY c] 8X
?GY8W: } KYRm
Ui# !:5`im;i K?Xo3W%K public String getSSiteURL() aC8,Y$>?E` { a,57`Ks+n< return sSiteURL; $|cp;~ 1 } &Rl3y\
r [5p7@6:$u KG-k$glD public void setSSiteURL(String value) \,%o>M' { QVG0>,+}$ sSiteURL = value; ;c
m wh< } itC *Z6^ %I|+_ z&x vBnKu public String getSFilePath() $XQ;~i
{ q:-]d0B+ return sFilePath; lq\' } Y0L5W;iM Z}K.^\S9 ,+NE: _ public void setSFilePath(String value) & GzhcW~ { 8MeO U sFilePath = value; .i3lG(
YG } 6h:?u4 (w#slTFT 5y[b8mur public String getSFileName() "x.6W! { C{`^9J- return sFileName; 2iR:*}5 } tJh3$K\ 5&-j{J0iV T[4[/n>i public void setSFileName(String value) =!g/2;-or { ph8Jn+|E sFileName = value; |>IUtUg\ } ]w_ Ukh$`q} ER;lkF`RF public int getNSplitter() /H%<oAjp6 { 3I;xU(rv return nSplitter; a* W_fxb } ^z *):e 5!SoN}$
rTP5-4 public void setNSplitter(int nCount) DYT@BiW{ { :tjgg] nSplitter = nCount; E~<(i': } 2|0Qk& } G. -h=DT] q:2aPfo& *;OJ~zT /* [V> :`? **Utility.java )p/=u@8_f */ 3WO#^}t package NetFox; t?]\M&i& +7i7`'9pd I=4Xv<F public class Utility {
JVUZ}#O >bX-!<S b(.-~c(' public Utility() Xr@l+zr { ih+*T1#:( 7]/dg*A )C /-!&k } SE,o7_k'S .0nn0)" //线程睡眠 ),nCq^Bp public static void sleep(int nSecond) iA55yT+ { )(:+q(m try{ h*;g0QBkl Thread.sleep(nSecond); ill-%OPeg } c N02roQl catch(Exception e) ] ?DDCew { Q(~3pt e.printStackTrace (); @9}),hl` } krQl^~@ } F\-B3i%0 Je#!Wd //日志 ~_DF06G public static void log(String sMsg) NLcO{ { |eH wp System.err.println(sMsg); g9yaNelDh) }
Veb+^& Lv
`#zgo_f ?1GY%- public static void log(int sMsg) ^lHb&\X { 'GEBxNH: System.err.println(sMsg); ;;EDN45 } Qqd6.F } pP|,7c5 -Z:]<;qU /6+1{p /* !cq=)xR **TestMethod.java B#HV20\?v */ +V)qep" package NetFox; eV[`P&j_C P'a0CE% Wmz q public class TestMethod { !1ML%}vvB, cZNi~ pwJ'3NbS public TestMethod() ZWf-X { ///xx/weblogic60b2_win.exe :y=!{J< try{ k_,MoDz SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 5h_<R!jA //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); !UBy%DN~k SiteFileFetch fileFetch = new SiteFileFetch(bean); jP1$qhp fileFetch.start(); O0@w(L- } 6eOrs-ty catch(Exception e){e.printStackTrace ();} Ze-MAt NJn&>/vM kP7a:(P_g } 7cIC&(h5 -'I _*fu k4S} #!
public static void main(String[] args) W[@i;f^g { ,/i_QgP new TestMethod();
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