JMeter进阶使用变量及BeanShell 预处理程序实现复杂调试

import sun.misc.BASE64Encoder;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException; 
import java.util.Arrays;
import java.util.Map;
import java.util.Set;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
    public static String md5AndSha(String inputText)
    {
        return sha(md5(inputText));
    }
    public static String md5(String inputText) {
        return encrypt(inputText, "md5");
    }
    public static String sha(String inputText) {
        return encrypt(inputText, "sha-1");
    }
    public static String encrypt(String inputText, String algorithmName) {
        if (inputText == null || "".equals(inputText.trim())) {
            throw new IllegalArgumentException("请输入要加密的内容");
        }
        if (algorithmName == null || "".equals(algorithmName.trim())) {
            algorithmName = "md5";
        }
        String encryptText = null;
        try {
            MessageDigest m = MessageDigest.getInstance(algorithmName);
            m.update(inputText.getBytes("UTF8"));
            byte[] s = m.digest();
            return hex(s);
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }return encryptText;
    }
public static String hex(byte[] arr) {
 StringBuffer sb = new StringBuffer();
 for (int i = 0; i  keySet = data.keySet();
       Set  keySet = data.keySet();
        String[] keyArray = keySet.toArray(new String[keySet.size()]);
        Arrays.sort(keyArray);
        StringBuilder sb = new StringBuilder();
        for (String k : keyArray) {
            if (k.equals("sign")) {
                continue;
            }
            if (data.get(k).toString().trim().length() > 0) //为空，则不参与签名
                sb.append(k).append("=").append(data.get(k).toString().trim()).append("&");
        }
        sb.append("key=").append(key);
        System.out.println(sb);
        if ("MD5".equals(signType)) {
            return MD5(sb.toString()).toUpperCase();
        }else {
            throw new Exception(String.format("Invalid sign_type: %s", signType));
        }
}


public void getPasswordPar(){    
  String clientId=vars.get("client_id");
  String clientSecret=vars.get("client_secret");
  String username=vars.get("username");
  String password=vars.get("password");
  String salt=vars.get("salt"); 
  String grant_type=vars.get("grant_type"); 
  String passwordPar=md5AndSha(password+salt);   
  vars.put("passwordPar",passwordPar); 
  log.info("加密passwordPar begin");         
  log.info(passwordPar);
  log.info("加密passwordPar end");        
}

log.info("BeanShell 预处理程序");
/*
 * 获取加密参数passwordPar
 */
getPasswordPar();
   
 

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

log.info("BeanShell 后置处理程序");

//取得请求返回结果
log.info("请求返回结果 begin");
String response = prev.getResponseDataAsString();
log.info(response); 
log.info("请求返回结果 end"); 

JSONObject json=  JSONObject.parseObject(response);
String myToken=json.getString("access_token");
//将access_token存入变量中
vars.put("myToken",myToken);
log.info("取得access_token为："+myToken);