jmeter-动态添加头在第二次迭代后失败

我正在尝试从csv文件中添加uri并运行功能测试。因此，基本上测试计划如下所述。对于从jmeter触发的每个http请求，我尝试使用预处理器在header manager中添加或清除header详细信息。对于csv中的前两行（请求），请求被成功触发，但是对于第三个url，头清除会给出错误

Test plan-|            
          |->thread-|
                    |->while loop-|
                                  -> CSV file
                                  -> http request
                                     -> header manager
                                     -> beanshell pre processor
                     -> result tree

import org.apache.jmeter.protocol.http.control.Header;

log.info("--------------------->>>> BEFORE 1 CLEARING HEADER");
if (ctx.getCurrentSampler().getHeaderManager().size() != 0){
    log.info("--------------------->>>> BEFORE 2 CLEARING HEADER");
    sampler.getHeaderManager().clear();
    log.info("--------------------->>>> AFTER 1 CLEARING HEADER");
}

if(!vars.get("LABEL").equals("login")) {
    log.info("--------------------->>>> IN iF COND LABEL != LOGIN");
    if (vars.get("environment").equals("gateway")) {
        log.info("--------------------->>>> ADDING HEADER <!LOGIN> <environment = gateway>"); 
        ctx.getCurrentSampler().getHeaderManager().add(new Header("Accept", "application/json"));
        ctx.getCurrentSampler().getHeaderManager().add(new Header("Content-Type", "application/json"));
         ctx.getCurrentSampler().getHeaderManager().add(new Header("Authentication",vars.get("authCode")));
         ctx.getCurrentSampler().getHeaderManager().add(new Header("Authorization", "Bearer 4b6e13b4dfc3187de6c2b762c84d9196"));
         sizeHeader = ctx.getCurrentSampler().getHeaderManager().size();
         log.info("==================>>>> size of header after ADDING HEADER <!LOGIN> <environment = gateway> <" + sizeHeader + ">");
    } else {
        log.info("--------------------->>>> ADDING HEADER <!LOGIN> <environment != gateway>");
        ctx.getCurrentSampler().getHeaderManager().add(new Header("Accept", "application/json"));
        ctx.getCurrentSampler().getHeaderManager().add(new Header("Content-Type", "application/json"));
        ctx.getCurrentSampler().getHeaderManager().add(new Header("Authorization",vars.get("authCode")));
        sizeHeader = ctx.getCurrentSampler().getHeaderManager().size();
         log.info("==================>>>> size of header after ADDING HEADER <!LOGIN> <environment = !gateway> <" + sizeHeader + ">");
    }
} else {
    log.info("--------------------->>>> ADDING HEADER <LOGIN> <environment = gateway>"); 
    ctx.getCurrentSampler().getHeaderManager().add(new Header("Accept", "application/json"));
    ctx.getCurrentSampler().getHeaderManager().add(new Header("Content-Type", "application/x-www-form-urlencoded"));
    sizeHeader = ctx.getCurrentSampler().getHeaderManager().size();
    log.info("==================>>>> size of header after ADDING HEADER <LOGIN> <environment = gateway> <" + sizeHeader + ">");
}

测试计划-|
|->线-|
|->while循环-|
->CSV文件
->http请求
->标题管理器
->比恩希尔预处理器
->结果树
导入org.apache.jmeter.protocol.http.control.Header；
log.info（“--------------------->>>>>在1清除头之前”）；
如果（ctx.getCurrentSampler（）.getHeaderManager（）.size（）！=0）{
log.info（“--------------------->>>>>在2清除头之前”）；
sampler.getHeaderManager（）.clear（）；
log.info（“--------------------->>>>>在1个清除头之后”）；
}
如果（！vars.get（“LABEL”）.equals（“login”））{
log.info（“---------------->>>>>在iF COND标签中！=登录”）；
if（vars.get（“环境”）.equals（“网关”））{
log.info（“--------------------->>>>添加头”）；
ctx.getCurrentSampler（）.getHeaderManager（）.add（新标题（“接受”，“应用程序/json”））；
ctx.getCurrentSampler（）.getHeaderManager（）.add（新标题（“内容类型”、“应用程序/json”））；
ctx.getCurrentSampler（）.getHeaderManager（）.add（新标题（“身份验证”，vars.get（“身份验证代码”））；
ctx.getCurrentSampler（）.getHeaderManager（）.add（新标题（“授权”、“承载人4b6e13b4dfc3187de6c2b762c84d9196”）；
sizeHeader=ctx.getCurrentSampler（）.getHeaderManager（）.size（）；
log.info（“===================>>>>添加头后的头大小”）；
}否则{
log.info（“--------------------->>>>添加头”）；
ctx.getCurrentSampler（）.getHeaderManager（）.add（新标题（“接受”，“应用程序/json”））；
ctx.getCurrentSampler（）.getHeaderManager（）.add（新标题（“内容类型”、“应用程序/json”））；
ctx.getCurrentSampler（）.getHeaderManager（）.add（新标题（“授权”，vars.get（“authCode”））；
sizeHeader=ctx.getCurrentSampler（）.getHeaderManager（）.size（）；
log.info（“===================>>>>添加头后的头大小”）；
}
}否则{
log.info（“--------------------->>>>添加头”）；
ctx.getCurrentSampler（）.getHeaderManager（）.add（新标题（“接受”，“应用程序/json”））；
ctx.getCurrentSampler（）.getHeaderManager（）.add（新标题（“内容类型”，“应用程序/x-www-form-urlencoded”）；
sizeHeader=ctx.getCurrentSampler（）.getHeaderManager（）.size（）；
log.info（“===================>>>>添加头后的头大小”）；
}

--------------------------日志文件如下--------------------------

2017-06-22 20:37:57,049 INFO o.a.j.e.StandardJMeterEngine: Running the test!
2017-06-22 20:37:57,050 INFO o.a.j.s.SampleEvent: List of sample_variables: []
2017-06-22 20:37:57,056 INFO o.a.j.g.u.JMeterMenuBar: setRunning(true, *local*)
2017-06-22 20:37:57,060 INFO o.a.j.e.StandardJMeterEngine: Starting ThreadGroup: 1 : Thread Group
2017-06-22 20:37:57,061 INFO o.a.j.e.StandardJMeterEngine: Starting 1 threads for group Thread Group.
2017-06-22 20:37:57,061 INFO o.a.j.e.StandardJMeterEngine: Thread will continue on error
2017-06-22 20:37:57,061 INFO o.a.j.t.ThreadGroup: Starting thread group... number=1 threads=1 ramp-up=1 perThread=1000.0 delayedStart=false
2017-06-22 20:37:57,066 INFO o.a.j.t.ThreadGroup: Started thread group number 1
2017-06-22 20:37:57,066 INFO o.a.j.e.StandardJMeterEngine: All thread groups have been started
2017-06-22 20:37:57,067 INFO o.a.j.t.JMeterThread: Thread started: Thread Group 1-1
2017-06-22 20:37:57,067 INFO o.a.j.s.FileServer: Stored: C:\Users\XXX\Desktop\apache-jmeter-3.2\bin\projects\testFrag\apiTest.csv
2017-06-22 20:37:57,070 INFO o.a.j.u.BeanShellTestElement: --------------------->>>> BEFORE 1 CLEARING HEADER
2017-06-22 20:37:57,073 INFO o.a.j.u.BeanShellTestElement: --------------------->>>> ADDING HEADER <LOGIN> <environment = gateway>
2017-06-22 20:37:57,073 INFO o.a.j.u.BeanShellTestElement: ==================>>>> size of header after ADDING HEADER <LOGIN> <environment = gateway> <2>
2017-06-22 20:37:57,889 INFO o.a.j.u.BeanShellTestElement: --------------------->>>> BEFORE 1 CLEARING HEADER
2017-06-22 20:37:57,889 INFO o.a.j.u.BeanShellTestElement: --------------------->>>> BEFORE 2 CLEARING HEADER
2017-06-22 20:37:57,889 INFO o.a.j.u.BeanShellTestElement: --------------------->>>> AFTER 1 CLEARING HEADER
2017-06-22 20:37:57,891 INFO o.a.j.u.BeanShellTestElement: --------------------->>>> IN iF COND LABEL != LOGIN
2017-06-22 20:37:57,891 INFO o.a.j.u.BeanShellTestElement: --------------------->>>> ADDING HEADER <!LOGIN> <environment = gateway>
2017-06-22 20:37:57,892 INFO o.a.j.u.BeanShellTestElement: ==================>>>> size of header after ADDING HEADER <!LOGIN> <environment = gateway> <4>
2017-06-22 20:38:00,050 INFO o.a.j.u.BeanShellTestElement: --------------------->>>> BEFORE 1 CLEARING HEADER
2017-06-22 20:38:00,050 ERROR o.a.j.u.BeanShellInterpreter: Error invoking bsh method: eval     Sourced file: inline evaluation of: ``import org.apache.jmeter.protocol.http.control.Header;  log.info("-------------- . . . ''
2017-06-22 20:38:00,050 WARN o.a.j.m.BeanShellPreProcessor: Problem in BeanShell script. org.apache.jorphan.util.JMeterException: Error invoking bsh method: eval       Sourced file: inline evaluation of: ``import org.apache.jmeter.protocol.http.control.Header;  log.info("-------------- . . . ''
2017-06-22 20:38:01,466 INFO o.a.j.t.JMeterThread: Stop Thread seen for thread Thread Group 1-1, reason: org.apache.jorphan.util.JMeterStopThreadException: End of file:C:\Users\XXX\Desktop\apache-jmeter-3.2\bin\projects\testFrag\apiTest.csv detected for CSV DataSet:CSV Data Set Config configured with stopThread:true, recycle:false
2017-06-22 20:38:01,467 INFO o.a.j.t.JMeterThread: Thread finished: Thread Group 1-1
2017-06-22 20:38:01,468 INFO o.a.j.e.StandardJMeterEngine: Notifying test listeners of end of test

2017-06-22 20:37:57049信息o.a.j.e.StandardJMeterEngine:运行测试！
2017-06-22 20:37:57050信息o.a.j.s.样本事件：样本变量列表：[]
2017-06-22 20:37:57056信息o.a.j.g.u.JMeterMenuBar:setRunning（真，*本地*）
2017-06-22 20:37:57060信息o.a.j.e.StandardJMeterEngine:起始线程组：1:线程组
2017-06-22 20:37:57061信息o.a.j.e.StandardJMeterEngine:为组线程组启动1个线程。
2017-06-22 20:37:57061信息o.a.j.e.StandardJMeterEngine:线程将继续出错
2017-06-22 20:37:57061信息o.a.j.t.ThreadGroup:起始线程组。。。number=1线程=1爬升=1 perThread=1000.0 delayedStart=false
2017-06-22 20:37:57066信息o.a.j.t.螺纹组：开始螺纹组编号1
2017-06-22 20:37:57066信息o.a.j.e.StandardJMeterEngine:所有线程组都已启动
2017-06-22 20:37:57067信息o.a.j.t.JMeterThread:线程开始：线程组1-1
2017-06-22 20:37:57067信息o.a.j.s.FileServer:存储：C:\Users\XXX\Desktop\apache-jmeter-3.2\bin\projects\testFrag\apiTest.csv
2017-06-22 20:37:57070信息o.a.j.u.BeanShellTestElement:------------------------------------>>>>>在1个清算头之前
2017-06-22 20:37:57073信息o.a.j.u.BeanShellTestElement:------------------------------------>>>>添加标题
2017-06-22 20:37:57073信息o.a.j.u.BeanShellTestElement:======================>>>>添加标头后的标头大小
2017-06-22 20:37:57889信息o.a.j.u.BeanShellTestElement:--------------------------------------------------->>>>>在1个清算头之前
2017-06-22 20:37:57889信息o.a.j.u.BeanShellTestElement:------------------------------------>>>>>在2个清算头之前
2017-06-22 20:37:57889信息o.a.j.u.BeanShellTestElement:--------------------------------------------------->>>>>在1个清算头之后
2017-06-22 20:37:57891信息o.a.j.u.BeanShellTestElement:------------------------------------>>>>>在iF COND标签中！=登录
2017-06-22 20:37:57891信息o.a.j.u.BeanShellTestElement:--------------------------------------------------->>>>添加标题
2017-06-22 20:37:57892信息o.a.j.u.BeanShellTestElement:======================>>>>>添加标头后的标头大小
2017-06-22 20:38:00050信息o.a.j.u.BeanShellTestElement:----------------------------------------->>>>>在1个清算头之前
2017-06-22 20:38:00050错误o.a.j.u.BeanShellInterpreter:调用bsh方法时出错：评估源文件：内联评估：``import org.apache.jmeter.protocol.http.control.Header；log.info（“--------------…”）
2017-06-22 20:38:00050警告o.a.j.m.BeanShell预处理器：BeanShell script.org.apache.jorphan.util.JMeterException中的问题：调用bsh方法时出错：eval源文件：内联求值：``import org.apache.jmeter.protocol.http.control.Header；log.info（“--------------”）
2017-06-22 20:38:01466信息o.a.j.t.JMeterThread:线程组1-1的停止线程，原因：org.apache.jorphan.util.JMeterStopThreadException:文件结尾：C:\Users\XXX\Desktop\apache-jmeter-3.2\bin\projects\testFrag\apiTest.csv检测到csv数据集：csv数据集配置为