-
UID:2537
-
- 注册时间2006-05-09
- 最后登录2020-05-29
- 在线时间3小时
-
- 发帖8
- 搜Ta的帖子
- 精华
0
- 铜板1641
- 人品值95
- 贡献值0
- 交易币0
- 好评度8
- 信誉值0
- 金币0
-
访问TA的空间加好友用道具
- 发帖
- 8
- 铜板
- 1641
- 人品值
- 95
- 贡献值
- 0
- 交易币
- 0
- 好评度
- 8
- 信誉值
- 0
- 金币
- 0
- 所在楼道
|
/* b
A)b`1lI **SiteFileFetch.java .-.q3ib */ >"cr-LB package NetFox; s.^c..e75C import java.io.*; *nYB o\@g import java.net.*; K4j@j}zK9I +jq
2pFQ :v#k&Uh3y public class SiteFileFetch extends Thread { W
*YW6 j6n2dMRvSE EvwbhvA( SiteInfoBean siteInfoBean = null; //文件信息Bean 0=OD?48< long[] nStartPos; //开始位置 4@DVc7\x$ long[] nEndPos; //结束位置 X$Q2m{dR FileSplitterFetch[] fileSplitterFetch; //子线程对象 B;eW/#` long nFileLength; //文件长度 x8 f6, boolean bFirst = true; //是否第一次取文件 RRx`}E9, boolean bStop = false; //停止标志 J3H.%m!V File tmpFile; //文件下载的临时信息 KU+( YF$1 DataOutputStream output; //输出到文件的输出流 d@-wi%,^ YO)')& //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Sdgb#?MR| public SiteFileFetch(SiteInfoBean bean) throws IOException %S{o5txo { nHSTeFI? siteInfoBean = bean; uDILjOT //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); d4d\0[ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); &bB6}H( if(tmpFile.exists ()) U+4HG { /"(b.& bFirst = false; ]KsGkAG read_nPos(); 8]My
k> } 54=}GnZN else 'To<T { 3QCMK^#Z: nStartPos = new long[bean.getNSplitter()]; ewo*7j4* nEndPos = new long[bean.getNSplitter()]; XDHLEG-u( } q z=yMIy= b; 6%>/og\% if(nFileLength == -1) !2(.$}E { ;JYoW{2 System.err.println("File Length is not known!"); m6-76ma,hi } NvcHv7, else if(nFileLength == -2) 9KXym } { /;DjJpwf0 System.err.println("File is not access!"); ^,Xa IP+[ } :#Ty^-"]1 else _~PO { hPcS,
p{% for(int i=0;i<nStartPos.length;i++) 1c'79YU { 5KK{%6#f\ nStartPos = (long)(i*(nFileLength/nStartPos.length)); NNgK:YibD } @Eo4U]- for(int i=0;i<nEndPos.length-1;i++) $;y1Qiel { Cgo9rC~] nEndPos = nStartPos[i+1]; 3Mw}R6g@# } .M8=^,h^K nEndPos[nEndPos.length-1] = nFileLength; .U<F6I:<md } C]/&vh7ta } FK6K6wU52m k'x#t( D
0 //启动子线程 )R~a;?T_c0 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 2@fa
rx: for(int i=0;i<nStartPos.length;i++) +1x)z~q= { O5O.><RP fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ikr7DBLt siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), XYts8}y5 nStartPos,nEndPos,i); Uh*@BmDA Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); {f-XyF1` fileSplitterFetch.start(); )PwQ^||{ } J8J!#j. // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), w3d34*0$ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ^eobp.U // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", YN/u9[=` nEndPos = " + nFileLength); C*a,<` // fileSplitterFetch[nPos.length-1].start(); `T=1<Tw c GJvp{U}y9I n_J5zQJ //等待子线程结束 ?;_H{/)m //int count = 0; <z',]hy //是否结束while循环 cg{Gc]'1# boolean breakWhile = false; @/LiR>, vffH "(<%Ua while(!bStop) @O'I)(To { bTiBmS write_nPos(); >d97l&W Utility.sleep(500); u7[pLtOwN breakWhile = true; $]1qbE+ l**3%cTb P0)AUi for(int i=0;i<nStartPos.length;i++) 2Q}7fht { z#RuwB+ if(!fileSplitterFetch.bDownOver) O~atNrHD { 7u|%^Ao6 breakWhile = false; *.o"ZVl break; 3+%nn+m } 5*Btb#: } ?T
<rt if(breakWhile) ~~@y_e[N#l break; 'aZASPn[ S_$nCyaH2 l77'Lne //count++; r,0@~;zA //if(count>4) L$kgK# T // siteStop(); oK$'9c5< } ]hL:33 a}dw9wU!: L@?e:*h System.err.println("文件下载结束!"); 12 -EDg/1 } 1U'ZVJ5bpK catch(Exception e){e.printStackTrace ();} fq=:h\\G } AC'lS
>7s >P<'L4; zC#%6@P\ //获得文件长度 qEZ!2R^`G public long getFileSize() 1LX)4TCC {
'mJ13 int nFileLength = -1; R B%:h-t4 try{ SwX@I6huM URL url = new URL(siteInfoBean.getSSiteURL()); n7S;
Xve# HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); =-5[Hn% httpConnection.setRequestProperty("User-Agent","NetFox"); @i{]4rk lv KJX>DL 9\ AX K95eS int responseCode=httpConnection.getResponseCode(); (7~%B" if(responseCode>=400) 2eHx"Ha { 2qjyFTT processErrorCode(responseCode); Hr&Ere8.4p return -2; //-2 represent access is error 6#vI;d[^ } `
jyKCm.$# &//2eL TA| s@T{ String sHeader; ?9Ma^C;} E>"8/ {"t5\U6cKM for(int i=1;;i++) \FXp*FbQ { ~?d>fR:X //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ;Yv14{T! //Utility.log(in.readLine()); hJLT!33: sHeader=httpConnection.getHeaderFieldKey(i); {!r#f(?uT if(sHeader!=null) _ ~[M+IO
{ %4/xH9 if(sHeader.equals("Content-Length")) C5MqwNX { W "k|K: nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); #
M>wH`Q# break; +|0 t } xh r[A } }#bZ8tm& else
7O$ & break; >4c` UW } &oEyixe } %N1"*</q catch(IOException e){e.printStackTrace ();} djGs~H>;U_ catch(Exception e){e.printStackTrace ();} ]'g:B p @k9Pz<ub 7f
r>ZY^ Utility.log(nFileLength); Sc{Tq\t;% (0}j]p'w #D0 ~{H return nFileLength; |T
y=7d , } G1[(F`t> p#=;)1 EZ{\D!_Y //保存下载信息(文件指针位置) s[T{c.F private void write_nPos()
/B[}I}X { U!Mf]3
try{ x,uBJ output = new DataOutputStream(new FileOutputStream(tmpFile)); U6c@Et , output.writeInt(nStartPos.length); Pk:zfC?4 for(int i=0;i<nStartPos.length;i++) ^vaL8+ { 5k~\or 5_ // output.writeLong(nPos); g}Mi9Kp output.writeLong(fileSplitterFetch.nStartPos); !5~k:1= output.writeLong(fileSplitterFetch.nEndPos); O2lIlCL } B\0t&dai|' output.close(); S<pkc8 } 2vvh|?M catch(IOException e){e.printStackTrace ();} C`EY5"N r catch(Exception e){e.printStackTrace ();} zR/IqW.`9 } R\y'_S=#a RY<%'\A`~ [xf$VkjuF //读取保存的下载信息(文件指针位置) `M0YAiG private void read_nPos() (
OXY^iq {
p[ Hr39o try{ ~ k<SbFp DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 6klD22b2$ int nCount = input.readInt(); AK;^9b-}q: nStartPos = new long[nCount]; y]^#$dK(z nEndPos = new long[nCount]; 7UDq/:}Fo for(int i=0;i<nStartPos.length;i++) L#!$hq9{_ { ~j]dct7 nStartPos = input.readLong(); jzMg'z/@J nEndPos = input.readLong(); `)2[ST } oLw|uU-| input.close(); mw"}8y } +4HlRGH catch(IOException e){e.printStackTrace ();} s>r ^r%uK catch(Exception e){e.printStackTrace ();} tUv3jq)n% } F9O`HFVK wE4;Rk1 vcM~i^24) private void processErrorCode(int nErrorCode) %l;*I?0H { 8,y{q9O System.err.println("Error Code : " + nErrorCode); m_$JWv\|\ } K( z[} y+RRg[6| 69iM0X!'u //停止文件下载 :G0+;[?N public void siteStop() fyrd`R { (7L/eDMT bStop = true; MX?}?"y for(int i=0;i<nStartPos.length;i++) 5QOZ%9E&M fileSplitterFetch.splitterStop(); ]!J<,f7W ki3 HcV #//
%&k } >>j+LRf* } #4N >d~ //负责部分文件的抓取 p {?}g' **FileSplitterFetch.java XECikld> */ s6/cL|Ex package NetFox; 4]EvT=Ro Rf?%Tv0\ O{nC^`X import java.io.*; g}YToOs import java.net.*; bOe<\Y$ >]-<uT_ BvQUn@ XE public class FileSplitterFetch extends Thread { *w|iu^G P8IRH#ED wx./"m.M String sURL; //File URL #w;;D7{@m long nStartPos; //File Snippet Start Position ?Nu#]u- long nEndPos; //File Snippet End Position NZfd_? 3 int nThreadID; //Thread's ID 'QR4~`6I boolean bDownOver = false; //Downing is over s&0*'^'O[S boolean bStop = false; //Stop identical j3LNnZY FileAccessI fileAccessI = null; //File Access interface u]0!|Jd0 zu<>"5}] :v#8O~ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException @ct#s:t { 2]3G1idB this.sURL = sURL; c8q G\\t[ this.nStartPos = nStart; F'XlJ M this.nEndPos = nEnd; "h$D7 mL nThreadID = id; xY+A]Up|w fileAccessI = new FileAccessI(sName,nStartPos);//定位 /3s@6Ex}E } pJn>oGeJ& @BXaA0F4 ]o `4Z" public void run() ?`"<DH~:0B { Bu':2"7 while(nStartPos < nEndPos && !bStop) TG?fUD V { pj+tjF6Np 4L!e=>as"1 PYaOH_X. try{ }^Z< dbt URL url = new URL(sURL); T%w(P ^qk HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); y/H8+0sEk httpConnection.setRequestProperty("User-Agent","NetFox"); gsi<S6DQ8 String sProperty = "bytes="+nStartPos+"-"; [RW,{A httpConnection.setRequestProperty("RANGE",sProperty); F=VoFmF@ Utility.log(sProperty); a0 qj[+ 0O_E\- = Q6xgLx[ InputStream input = httpConnection.getInputStream(); sv@}x[L //logResponseHead(httpConnection); [|jIC ,rXW`7!2 bu;vpNa byte[] b = new byte[1024]; ]Px:d+wX: int nRead; ~O8]3+U while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) y^3,X_0 { |]I#CdO nStartPos += fileAccessI.write(b,0,nRead); ,d5ia4\K //if(nThreadID == 1) {8_:4`YZ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); S~}$Ly@ } X=\x&Wt {<"[D([ uz8nRS s Utility.log("Thread " + nThreadID + " is over!"); %bN"bxv^ bDownOver = true; ga,A'Z //nPos = fileAccessI.write (b,0,nRead); #i6[4X? } ^g\h]RD} catch(Exception e){e.printStackTrace ();} -)<JBs> } WGluZhRuT3 } N:5b1TdI, U24V55ZnI V.+DP //打印回应的头信息 omr:C8T> public void logResponseHead(HttpURLConnection con) -B",&yTV { XPrY`,kN for(int i=1;;i++) Fv<]mu { *%;6P5n% String header=con.getHeaderFieldKey(i); H#_}^cGPR= if(header!=null) G6f%/m` //responseHeaders.put(header,httpConnection.getHeaderField(header)); j^:b-:F Utility.log(header+" : "+con.getHeaderField(header)); A-}PpH~.Z else bl6':m+ break; UqY J#&MqY } zR_9D} } ^o,y5, dV'6m@C TZ)(ZKX*R public void splitterStop() I):m6y@ { _$~ex ~v bStop = true; 34HFrMi } X}kVBT1w+x s#M?
tyhj uHTKo(NG } `Nc`xO? 9*"[pt+tA W5M
] /* XT\Td}> **FileAccess.java 'cWlY3%t *//文件访问(定位,写) eYPt package NetFox; /2=_B4E2 import java.io.*; f'8B[&@L i+kFL$N o<9yaQ; public class FileAccessI implements Serializable{ }//8$Z<( 94S .9A //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 !]n{l_5r RandomAccessFile oSavedFile; uMljH@xBc long nPos; 2y&_Z^kI? ;F"
kD }?\#_BCjx( public FileAccessI() throws IOException fq)Ohb { mg/C Ux this("",0); \k2C 5f } Nn~tb2\vk `HMligT &6=TtTp"9 public FileAccessI(String sName,long nPos) throws IOException ^R&_}bp { <T4 7kL I oSavedFile = new RandomAccessFile(sName,"rw"); 1mvu3}ewx this.nPos = nPos; w-{#6/<kI5 oSavedFile.seek(nPos); /@xr[=L
} hnM9-hqm TPN:cA6[c &VtWSq-) public synchronized int write(byte[] b,int nStart,int nLen) !07FsPI#{ { xF\}.OfWG int n = -1;
Ep#<$6> try{ p0%6@_FT~ oSavedFile.write(b,nStart,nLen); zM3H@;}m n = nLen; ;@h'Mb } 98"z0nI% catch(IOException e) sYW1T @ { 3"2<T^H] e.printStackTrace (); n]kQtjJ } fS8XuT _ d(Ks9 9OO0Ht4j return n; i75?*ld } `"^@[1 =PeW$q+ x0TnS# } *IjdN,wox ^Y*`D_-G Cz$Hk;3\6 /* jSOa **SiteInfoBean.java q_%w
l5\F */ 4q@9 package NetFox; Z]1z*dv A1=$kzw{UH [xp~@5r' public class SiteInfoBean { <*b]JY V@ iPtm@f,bI CU7iva private String sSiteURL; //Site's URL j|VlHDqR private String sFilePath; //Saved File's Path eX]9mQ]E private String sFileName; //Saved File's Name ,&O:/|c E private int nSplitter; //Count of Splited Downloading File T^-H_|/M ,i$(yx? )KTWLr; public SiteInfoBean() i85+p2i7 {//nSplitter的缺省值为5 hz>yv@1 //default value of nSplitter is 5 Rzn 0-cG this("","","",5); 8gu7f;H/k } #7cf 8y M7cI$=G '6Z/-V4k public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Xbsj:Ko]]U { A<*tn?M] sSiteURL= sURL; tZc.%TU sFilePath = sPath; =":V
WHf sFileName = sName; =."WvBKg this.nSplitter = nSpiltter; iu:p&h `)gkkZ$)j '8kL1 } 5D02%U2N)G G3^n_]Jb bW 79<T'+ public String getSSiteURL() ko7-%+0|] { j)lM:vXR return sSiteURL; MlcoOi! } @Tm0T7C EssUyF-jwU -$!Pf$l@ public void setSSiteURL(String value) v'2OHb# { Kw5+4R(5 sSiteURL = value; bju,p"J1-E } "351s3ff
]aMa*fF ~]t2?SqNm public String getSFilePath() yI)RGOV { `- uZv return sFilePath; (^@;`8Dy8 } uBL~AC3>O xr7<(:d :O@,Z_" public void setSFilePath(String value) uzn))/" { >=q!!'$: sFilePath = value; W~@GK } %_X[{( bMK'J MdTd$ 4J3 public String getSFileName() fN? Lz%z3 { v.8S
V] return sFileName; ]\b1~ki!F } Pt)}HF|u kHIQ/\3?Q [ QL<&:s& public void setSFileName(String value) cE8 _keR~ { HI`A;G] sFileName = value; d-S'y-V?d } ''
A[`,3 1J%qbh :R?| 2l public int getNSplitter() @BQBNGR 1 { gt~2Br4 return nSplitter; `LHfAXKN } 4sD:J-c I`}vdX) EA{*%9 A public void setNSplitter(int nCount) h,jAtL! { q-)_Qco nSplitter = nCount; (R
2P<
Zr } R"kE5: } Chi<)P$^ 1Qe! l?<z1Acd& /* ke6cZV5w **Utility.java hy`)]>9z~ */ (9q {J(44 package NetFox; N %/DN V$F.`O!hfi *gpD4c7A\ public class Utility { !5 :[X vI# 5qB=@O]|G; u#k6v\/ public Utility() YbBH6RZr { \ rWgA 9PfU'm|h 1kw4'#J8 } %IXW|mi %L|bF"K5; //线程睡眠 WM l ^XZO public static void sleep(int nSecond) /Gv$1t^a
{ HnY"6gTNK try{ ^3s&90 Thread.sleep(nSecond); `Q^Sm`R } KIl.?_61O catch(Exception e) m-FDCiN> { &B,& *Lp e.printStackTrace (); .E8p-R5)V> } EuA<{%i } 7?WBzo!!L w=>mG- //日志 +rO<'H:umJ public static void log(String sMsg) 4'[ V'c\ { cZT.vA# System.err.println(sMsg); oi4Wxcj } 3NZFW{u 4'b]2Mn3 0BD((oNg public static void log(int sMsg) &+iW: { D)Rf System.err.println(sMsg); To?
bp4 } a-2
{x2O } zW`koRH@ U+M?<4J)" cyeDZ) /* :Aiu!}\ **TestMethod.java p+D6Z'B */ sBI%lrO package NetFox; !T(Omve) "(VcYQ+ = }lA|S public class TestMethod { ;7*@Gf}R M:f=JuAx
C2i..iD public TestMethod() ~y^lNgujO { ///xx/weblogic60b2_win.exe s""8V_,; try{ R*C+Yk)Tkt SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Dx)XC?'xO //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); fsuvg jlE SiteFileFetch fileFetch = new SiteFileFetch(bean); m6<0 hP fileFetch.start(); ZU'^%)6~o~ } WfO$q^'?DP catch(Exception e){e.printStackTrace ();} >iJuR.:OO =@ Yk&{VXU< }
,^C;1ph RyD$4jk+T" uelTsn public static void main(String[] args) 1e} 3L2rC { y@JYkp>I new TestMethod(); 2oASz| } ;mlIWn } h!GixN? 点击下载更多相关资料
|