如何在JMeter 5.0中实现ASCII转HEX？新手求助

Hey there! Since you're new to JMeter 5.0 and need to convert ASCII strings to HEX, I'll walk you through a few straightforward methods that work perfectly with your version. Let's dive in!

This is the simplest and most efficient way, thanks to JMeter's native Groovy support:

• If you have a hardcoded ASCII string, use this function directly wherever you need the HEX result (like HTTP request parameters or variable values):

  ${__groovy(org.apache.commons.codec.binary.Hex.encodeHexString("Your ASCII Text Here".getBytes()),)}
  

• If your ASCII content is stored in a JMeter variable (e.g., ${ascii_input}), modify the function to pull from the variable:

  ${__groovy(org.apache.commons.codec.binary.Hex.encodeHexString(vars.get("ascii_input").getBytes()),)}
  

• Test it out: For example, converting "Hello" will give you the HEX value 48656C6C6F.

Great if you need to handle batch conversions or add extra logic:

1. Add a JSR223 PreProcessor or JSR223 Sampler to your test plan (pick based on when you need the conversion to happen).
2. Paste this Groovy script into the "Script" field:

   // Fetch your ASCII input (either hardcode it or pull from a variable)
   def asciiInput = vars.get("ascii_input") // Or replace with "Your Custom Text"
   // Convert to HEX
   def hexOutput = org.apache.commons.codec.binary.Hex.encodeHexString(asciiInput.getBytes())
   // Save the result to a new variable for later use
   vars.put("hex_result", hexOutput)
   

3. You can now reference the converted value anywhere using ${hex_result}.

If you prefer BeanShell over Groovy (note: it's less performant for high-concurrency tests):

1. Add a BeanShell PreProcessor or BeanShell Sampler to your test plan.
2. Paste this code into the "Script" area:

   import org.apache.commons.codec.binary.Hex;
   // Get your ASCII input from a variable or hardcode it
   String asciiStr = vars.get("ascii_input");
   // Convert to HEX
   String hexStr = Hex.encodeHexString(asciiStr.getBytes());
   // Store the result in a variable
   vars.put("hex_result", hexStr);
   

• Encoding check: If your ASCII string includes special characters, specify the encoding in getBytes() (e.g., getBytes("UTF-8")) to ensure accurate conversion.
• Verify results: Add a Debug Sampler to your test plan and check the output in the View Results Tree listener to confirm your HEX value is correct.
• No extra downloads needed: JMeter 5.0 comes with the Apache Commons Codec library pre-installed, so you don't have to add any external JAR files.

内容的提问来源于stack exchange，提问作者Tech User