Jmeter中的一些应用备忘

     正则表达式提取器中的模板和匹配数字是什么意思。

     匹配数字就是用来选择是哪一次匹配。

     模板是用来指定${变量名}时的输出格式的。

     从jmeter上摘抄的文字，

    

Suppose you want to match the following portion of a web-page:
name="file.name" value="readme.txt" and you want to extract both file.name and readme.txt.
A suitable reqular expression would be:
name="([^"]+)" value="([^"]+)"
This would create 2 groups, which could be used in the JMeter Regular Expression Extractor template as $1$ and $2$.

The JMeter Regex Extractor saves the values of the groups in additional variables.

For example, assume:

• Reference Name: MYREF
• Regex: name="(.+?)" value="(.+?)"
• Template: $1$$2$

Do not enclose the regular expression in / /

The following variables would be set:

• MYREF: file.namereadme.txt
• MYREF_g0: name="file.name" value="readme.txt"
• MYREF_g1: file.name
• MYREF_g2: readme.txt

These variables can be referred to later on in the JMeter test plan, as ${MYREF}, ${MYREF_g1} etc

     另外，可以写一些简单的函数对结果进行检查。

JMeter functions are special values that can populate fields of any Sampler or otherelement in a test tree. A function call looks like this:

${__functionName(var1,var2,var3)}

Where "__functionName" matches the name of a function.
Parentheses surround the parameters sent to the function, for example ${__time(YMD)}The actual parameters vary from function to function. Functions that require no parameters can leave off the parentheses, for example ${__threadNum}.

If a function parameter contains a comma, then be sure to escape this with "\", otherwise JMeter will treat it as a parameter delimiter.For example:

${__time(EEE\, d MMM yyyy)}

Variables are referenced as follows:

${VARIABLE}

     在测试restful api的时候，需要加一个http头信息管理器，其中添加参数，content-type:application/json，这样可以支持发送json格式的内容给服务器。