jmeter gets mysql data

JDBC Connection Configuration

Database URL: jdbc:mysql:// database address/library name

JDBC Driver class：com.mysql.jdbc.Driver

Username: account number

Password: Password

JDBC Request

field meaning

field	meaning
Variable Name Bound to Pool	The name of the database connection pool configuration
Query Type	Type of sql statement
SQL Query	sql statement There is no need to add ; at the end of the statement  Variables use ? placeholders
Parameter values	Variable values ​​that need to be passed, multiple variables are separated by ,
Parameter types	variable type
Variable Names	Save the data returned by the sql statement and the total number of rows of the returned data separated by , skip column with empty
Result Variable Name	An Object variable stores all return values
Query timeout(s)	Timeout time; default 0, means infinite time
Limit ResultSet	Similar to limit, limit the number of rows returned by the sql statement in the result set
Handle ResultSet	How to define the result set returned by callable statements; the default is stored as a string

Description: Variable Name in JDBC Connection Configuration is the same as Variable Name in JDBC request

Add loop controller:

 Put the target interface under the loop controller, and add a counter, because the value we take is based on ${mac_N}, then this N can be obtained by incrementing the counter

Add counter:

 

 Get nested functions via function helpers:

 The function __V can be used to execute the variable name expression and return the execution result. It can be used to execute nested function references (currently not supported by JMeter).