18. Heritrix overall structure URI processing flowThe processing chain consists of multiple processors, which collectively complete the processing of URIs, as shown in 19.Figure 19. URI processing Chain1) Pre-fetch processing chain (preprocessing chain), used to determine the crawl of some prerequisites, such as robot protocol, DNS and so on.2) Fetch processing chain (crawl processing chain), parse the network transport protocol, obtain data from the remote server.3)
CopyCode The Code is as follows: nodelist body_nodes = This. getparser (). parse (body_filter );
For (INT I = 0; I {
Node node = body_nodes.elementat (I );
Parser body_parser = new Parser (node. tohtml ());Textextractingvisitor visitor = new textractingvisitor ();Body_parser.visitallnodeswith (visitor );Body. append (visitor. getextractedtext ());}
Textextractingvisitor, visitallnodeswith, and other classes and methods are important but rare in visitor.Attached belowSource code:Copy codeThe
To initialize a data source, follow these steps:
1. Save the Delta initialization structure of the data source2. Check all data of the package in the information package.
3. The request turns green and the Delta queue has been generated.
In many applications, when Delta is initializing, the service processing must be stopped.Situation A: the Delta process must be initialized successfully (including generating the Delta queue for the datasource) before you can update new orChanged (DELTA) d
I wrote a blog about learning surf algorithms: http://blog.csdn.net/sangni007/article/details/7482960.
However, the Code is troublesome and involves the FLANN algorithm (random kdtree + KNN). Although it can be understood, it is difficult to find a simplified version in the document today:
1. surffeaturedetector detector (minhessian); construct a surf detector;
Detector. Detect (img_1, keypoints_1); detector. Detect (img_2, keypoints_2); Detection
2. surfdescriptorextractor
hssfrichtextstring ("User Password"); password. setcellvalue (passwordcontent); // create an output file stream fileoutputstream out = new fileoutputstream (filetowrite); // Save the corresponding Excel Workbook to the workbook. write (out); out. flush (); // The operation ends. close the file out. close (); system. out. println ("file generation... "+ filetowrite );}}
Read the word content:
Package poi.doc;/*** use poi to read content from word */import Java. io. fileinputstream; import Org. a
for each filter here, Or, plus another filter, you can even control the only part of the photo with a specific filter effect, 5 photo effect preview, 6 when you press OK, and the program will automatically add an added effect to Photoshop layer. The first filter in this photo uses "skylight filter", which strengthens the color of sunsets and sunrises for photos, and recommends that you do not use them too strongly to avoid being out of the picture, and then press OK after adding them.
When we do the HTTP interface test, the returned data are JSON strings, JMeter itself does not support the direct processing of JSON strings, if you want to get to the value specified in the return result, it must be obtained through regular expressions, the regular expression is troublesome, the wrong way to get the value, We all know that JSON is key-value so to save value, that jmeter inside can be directly through the key to value it, so that the regular expression is not so troublesome.If y
sampled values)
Two interfaces are also defined in the TraceContext injector,extractor
Public interface Injector
Injector-Used to inject various data from the TraceContext into the carrier, where carrier is typically an object that is similar to the HTTP headers that can carry additional information in the RPC middle.
Extractor-Used to extract TraceContext-related information or sample tag information i
Many of my friends will encounter garbled characters in the decompressed ZIP file in linux. Next I will introduce how to solve the problem of garbled characters in the decompressed ZIP file. If you need it, please refer to it.
Solution
Modify the default system encoding to Chinese.
The Code is as follows:
Copy code
Vim/etc/sysconfig/i18n
Delete the file and add the following content.
The Code is as follows:
Copy code
LANG = zh_CN.GBK LANGUAG
-family:verdana;" >GNUNBSP;LGPLNBSP, and restricted license. For more information on licensing, see: 7-zip license . You can use 7-zip on any computer , including computers that are used for commercial purposes, and do not donate or pay 7-zip without prejudice to your use. Let 's Compare the 7-zip with the usual compression software.
Software name
Mozilla Firefox
Google Earth
161 Files15,684,168 bytes
In a single file23,530,652 bytes
) Tar xf $ ;; *.TBZ2) tar xjf $ ;; *.tgz) tar xzf $ ;; *.zip) unzip $ ;; *. Z) uncompress $ ;; *.7z) 7z x $ ;; *) echo "' $ ' cannot be extracted via extract ()" ; Esac Else echo "' $ ' is not a valid file" fi}Very long, but also the most useful. Unzip any document
......).
Go to SourceForge to apply for a project at 1.0 ...... Loonframework is not finished yet ......
Version 0.1.1.3 released:Project address: http://code.google.com/p/greenvm/Supports unzipping 7z compressed packages. We recommend that you use this format to compress virtual machines.
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Solutions
Modify system default encoding to Chinese
The code is as follows
Copy Code
vim/etc/sysconfig/i18n
Delete the inside and add the following
The code is as follows
Copy Code
Lang=zh_cn. GBK language= "Zh_CN:zh:en_US:en" GST_ID3_TAG_RNCODING=GBK lc_ctyle=zh_cn. GBK lc_all= "ZH_CN. GBK "
Using 7z decompression can be resolved: 7z
Because of too much content, we can search by ctrl+f
IE BrowserID suffix name PHP recognized file type0 gif image/gif1 jpg image/jpeg2 PNG Image/png3 BMP Image/bmp4 PSD Application/octet-stream5 ico Image/x-icon6 rar Application/octet-stream7 Zip Application/zip8 7z Application/octet-stream9 exe Application/octet-streamTen AVI Video/aviOne rmvb APPLICATION/VND.RN-REALMEDIA-VBR3GP Application/octet-streamApplication/octet-stream flvMP3 Audio/mpegWAV A
The compressed package file format on Linux, in addition to Windows most common *.zip, *.rar,. 7z suffix for compressed files, as well as. GZ,. XZ,. bz2,. Tar,. tar.gz,.tar.xz,tar.bz2File Suffix Name description*.zip zip program packing compressed files*.rar RAR Program Compressed files*.tar Tar program packaging, uncompressed files*.gz gzip Program (GNU Zip) compressed files*.XZ XZ Program Compressed files*.BZ2 tar packaging, gzip program compressed
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