console2

; +----+--------+------+ |ID |Status | name | +----+--------+------+ |1 |1 | Props | |2 |1 | Equipment | +----+--------+------+ 2 rows in set Mysql> Note: In order to test the database lock, I use two console to simulate different transaction operations, represented by Console1, Console2, respectively.Example 1: (explicitly specifying a primary key and having this data, row lock)Console1: The result was queried, but the data was l

table T_goods, including Id,status,name three fields, the ID is the primary key, the database is recorded as follows;SQL code Mysql> select * from T_goods; +----+--------+------+ |ID |Status | name | +----+--------+------+ |1 |1 | Props | |2 |1 | Equipment | +----+--------+------+ 2 rows in Set Mysql> Mysql> select * from T_goods; +----+--------+------+ | id | status | name | +----+--------+------+ | 1 | 1 | Props | | 2 | 1 | Equip

| 1 | Equipment |+----+--------+------+2 rows in Set Mysql>Note: In order to test the database lock, I use two console to simulate different transaction operations, represented by Console1, Console2, respectively. Example 1: (explicitly specifying a primary key and having this data, row lock) Console1: The result was queried, but the data was locked SQL Code Collection CodeMysql> SELECT * from T_goods where id=1 for update;+----+--------+------+| ID

by Console1, Console2, respectively. Example 1: (Explicitly specify primary key, and have this data, row lock) Console1: The result was queried, but the data was locked Set autocommit=0; SELECT * from T_goods where id=1 for update; 　 Console2: Query is blocked 　　Console2: If Console1 is not submitted for a long time, it will report an error Example 2: (explici

There's not that much nonsense. direct to the point! For reading local files and changing the UTF8 format is still a part of the process of garbled, remedial or correct posture. Look at the regular reading first (at least my first reaction is to say that ...)1 //if error, throw IO exception in console2 Public StaticString read (string filename)throwsioexception{3BufferedReader in=NewBufferedReader (Newfilereader (filename));4 String S;5String

The secure attribute of Set-Cookie is used to handle this problem. It indicates that the created cookie can only be passed to the server by the browser in the HTTPS connection for session verification, if it is an HTTP connection, this information will not be transmitted, so it will never be heard. During the project today, we encountered the cross-origin cookie transfer issue. Therefore, we learned a cookie Attribute-secure. As the name suggests, this attribute is used to ensure cookie secur

The secure attribute of Set-Cookie is used to handle this problem. it indicates that the created cookie can only be passed to the server by the browser in the HTTPS connection for session verification, if it is an HTTP connection, this information will not be transmitted, so it will never be heard. During the project today, we encountered the cross-origin cookie transfer issue. Therefore, we learned a cookie attribute-secure. As the name suggests, this attribute is used to ensure cookie secur

First, Netcat source + memory Channel + logger SINK1. Modify Configuration1) Modify the flume-env.sh file under $flume_home/conf, modify the contents as followsExport JAVA_HOME=/OPT/MODULES/JDK1. 7. 0_672) under the $flume_home/conf directory, create the agent subdirectory, creating a new netcat-memory-logger.conf with the following configuration:# netcat-memory-logger# Name The components in this agenta1.sources=r1a1.sinks=K1a1.channels=c1# Describe/Configure the Sourcea1.sources.r1.type=Netcat

(fifo_server,o_wronly| o_nonblock,0);printf ("Please input your data:\n");scanf ("%s", w_buf);if ((Nwrite=write (fd,w_buf,100)) ==-1){if (Errno==eagain)printf ("The FIFO has not been read yet. Please try later\n ");}Elseprintf ("Write%s to the fifo\n", w_buf);}}4.1 Compiling the program[[email protected] FIFO] $lsFIFO_READ.C fifo_write.c[[email protected] FIFO] $GCC fifo_read.c-o Read[[email protected] FIFO] $GCC fifo_write.c-o Write[[email protected] FIFO] $lsFIFO_READ.C fifo_write.c Read Writ

The project today involves the problem of passing a cookie across domains, and hence the understanding of a property--secure of the cookie. As the name suggests, this property is used to keep cookies safe. When the secure property is set to True, cookies are uploaded to the server under the HTTPS protocol and cannot be uploaded under the HTTP protocol, so they are not tapped. In simple practice, the Chrome browser opens https://www.baidu.com and http://www.baidu.com, opens the console separat

a period of time axis14. Console.trace stack trace related debuggingThe above method is just my personal understanding. If you want to see the specific API, you can take a look at the official address: HTTPS://DEVELOPER.CHROME.COM/DEVTOOLS/DOCS/CONSOLE-APIHere are some shortcut keys for the console1, the direction of the keyboard keys , we use it to know. For example, the use of a key is equivalent to using the last input symbol in the console2 . The

characters";string concatenation1) string + string: Concatenate two strings to produce a new string2) string + other types: Convert other types to strings (the base type is the string representing the value), then connectNote the point:Char+char: Not a string connection, but a conversion to an int integer for an addition operationType conversionsAutomatic type conversion1) Small Conversion Large2) Compiler-OptimizedForcing type conversions2) Large Conversion smallSyntax: small data type variabl