Tsung Erlang 函数 (dynvars) - 转义引号

Question

Tsung 和 Erlan 是新手，遇到了一个我无法找到答案的问题。我在 Tsung dynvars Erlang 函数中使用 erlang-mysql-driver ，我似乎遇到了转义引号的问题。

我想做这样的事情：

      <setdynvars sourcetype="eval"
              code='fun({Pid,DynVars})->
                  mysql:start_link(p1, "localhost", "user", "pass", "db"), 
                  Result = mysql:fetch(p1, "SELECT * FROM consumers WHERE first_name=\'Doonley\'") end.'>
      <var name="myres" />
    </setdynvars>

但我收到空格错误：

Douglas-Sparlings-MacBook-Pro:.tsung dsparling$ tsung start
Starting Tsung
"Log directory is: /Users/dsparling/.tsung/log/20091110-16:35"
3284- fatal: {whitespace_required_between_attributes}
["Config Error, aborting ! ",{fatal,{{whitespace_required_between_attributes},{file,"/Users/dsparling/.tsung/tsung.xml"},{line,72},{col,221}}}]

我实际上需要使用变量进行选择，但我不确定语法。我正在寻找类似以下内容的内容：

      <setdynvars sourcetype="eval"
              code='fun({Pid,DynVars})->
                  Val='Doonley",
                  mysql:start_link(p1, "localhost", "user", "pass", "db"), 
                  Result = mysql:fetch(p1, "SELECT * FROM consumers WHERE first_name=?", Val) end.'>
      <var name="myres" />
    </setdynvars>

Answer 1

尝试将单引号转义为 '。例如：

  <setdynvars sourcetype="eval"
          code='fun({Pid,DynVars})->
              mysql:start_link(p1, "localhost", "user", "pass", "db"), 
              Result = mysql:fetch(p1, "SELECT * FROM consumers WHERE first_name='Doonley'") end.'>
  <var name="myres" />
</setdynvars>