http.post.json decNum: got first char '\"'"

[moon]

import static net.grinder.script.Grinder.grinder
import static org.junit.Assert.*
import static org.hamcrest.Matchers.*
import net.grinder.plugin.http.HTTPRequest
import net.grinder.plugin.http.HTTPPluginControl
import net.grinder.script.GTest
import net.grinder.script.Grinder
import net.grinder.scriptengine.groovy.junit.GrinderRunner
import net.grinder.scriptengine.groovy.junit.annotation.BeforeProcess
import net.grinder.scriptengine.groovy.junit.annotation.BeforeThread
// import static net.grinder.util.GrinderUtils.* // You can use this if you're using nGrinder after 3.2.3
import org.junit.Before
import org.junit.BeforeClass
import org.junit.Test
import org.junit.runner.RunWith

import java.util.Date
import java.util.List
import java.util.ArrayList

import HTTPClient.Cookie
import HTTPClient.CookieModule
import HTTPClient.HTTPResponse
import HTTPClient.NVPair

/**
 * A simple example using the HTTP plugin that shows the retrieval of a
 * single page via HTTP.
 *
 * This script is automatically generated by ngrinder.
 *
 * @author admin
 */
@RunWith(GrinderRunner)
class TestRunner {

        public static GTest test
        public static HTTPRequest request
        public static NVPair[] headers = []

        public static String body = "{\n  \"kind\": \"Service\", \n  \"apiVersion\": \"v1\", \n  \"metadata\": {\n    \"name\": \"omc-tomcat7\"\n  }, \n  \"spec\": {\n    \"selector\": {\n      \"role\": \"omc-tomcat7\"\n    }, \n    \"ports\": [\n      {\n        \"protocol\": \"TCP\"\n      }, \n      {\n        \"port\": \"8080\"\n      }, \n      {\n        \"targetPort\": \"8080\"  \n      }\n    ]\n  }\n}"
       
        public static Cookie[] cookies = []

        @BeforeProcess
        public static void beforeProcess() {
                HTTPPluginControl.getConnectionDefaults().timeout = 6000
                test = new GTest(1, "181")
                request = new HTTPRequest()
                // Set header datas
                List<NVPair> headerList = new ArrayList<NVPair>()
                headerList.add(new NVPair("Content-Type", "application/json"))
                headers = headerList.toArray()
                grinder.logger.info("before process.");
        }

        @BeforeThread
        public void beforeThread() {
                test.record(this, "test")
                grinder.statistics.delayReports=true;
                grinder.logger.info("before thread.");
        }
       
        @Before
        public void before() {
                request.setHeaders(headers)
                cookies.each { CookieModule.addCookie(it, HTTPPluginControl.getThreadHTTPClientContext()) }
                grinder.logger.info("before thread. init headers and cookies");
        }

        @Test
        public void test(){
                HTTPResponse result = request.POST("http://172.18.1.181:9326/api/v1/namespaces/default/services", body.getBytes())

                //print logInfo
                grinder.logger.info(result.getText());
                grinder.logger.info(result.getHeader("Content-type"));

                if (result.statusCode == 301 || result.statusCode == 302) {
                        grinder.logger.warn("Warning. The response may not be correct. The response code was {}.", result.statusCode);
                } else {
                        assertThat(result.statusCode, is(200));
                }
        }
}

-----------------------------------------------------------------------------
Result (errorInfo) as follows:

2017-08-07 16:50:48,321 INFO  The Grinder version 3.9.1
2017-08-07 16:50:48,343 INFO  Java(TM) SE Runtime Environment 1.7.0_51-b13: Java HotSpot(TM) 64-Bit Server VM (24.51-b03, mixed mode) on Windows 7 amd64 6.1
2017-08-07 16:50:48,351 INFO  time zone is CST (+0800)
2017-08-07 16:50:48,542 INFO  worker process 0 of agent number 0
2017-08-07 16:50:48,596 INFO  Instrumentation agents: byte code transforming instrumenter for Java; byte code transforming instrumenter for Java
2017-08-07 16:50:50,764 INFO  registered plug-in net.grinder.plugin.http.HTTPPlugin
2017-08-07 16:50:50,872 INFO  before process.
2017-08-07 16:50:50,877 INFO  Running "groovy181-resource.groovy" using GroovyScriptEngine running with groovy version: 2.2.1
2017-08-07 16:50:50,983 INFO  before thread.
2017-08-07 16:50:50,997 INFO  starting, will do 1 run
2017-08-07 16:50:50,997 INFO  Start time is 1502095850997 ms since Epoch
2017-08-07 16:50:51,043 INFO  before thread. init headers and cookies
2017-08-07 16:50:51,111 INFO  http://172.18.1.181:9326/api/v1/namespaces/default/services -> 400 Bad Request, 217 bytes
2017-08-07 16:50:51,123 INFO  {"kind":"Status","apiVersion":"v1","metadata":{},"status":"Failure","message":"Service in version \"v1\" cannot be handled as a Service: [pos 245]: json: decNum: got first char '\"'","reason":"BadRequest","code":400}

2017-08-07 16:50:51,123 INFO  application/json
2017-08-07 16:50:51,171 ERROR
Expected: is <200>
     got: <400>

java.lang.AssertionError:
Expected: is <200>
     got: <400>

        at TestRunner.test(groovy181-resource.groovy:83) ~[na:na]
        at net.grinder.scriptengine.groovy.junit.GrinderRunner.run(GrinderRunner.java:170) ~[ngrinder-groovy-3.4.1.jar:na]
        at net.grinder.scriptengine.groovy.GroovyScriptEngine$GroovyWorkerRunnable.run(GroovyScriptEngine.java:147) ~[ngrinder-groovy-3.4.1.jar:na]
        at net.grinder.engine.process.GrinderThread.run(GrinderThread.java:118) ~[grinder-core-3.9.1.jar:na]
2017-08-07 16:50:51,174 INFO  finished 1 run
2017-08-07 16:50:51,179 INFO  elapsed time is 182 ms
2017-08-07 16:50:51,179 INFO  Final statistics for this process:
2017-08-07 16:50:51,201 INFO  
             Tests        Errors       Mean Test    Test Time    TPS          Mean         Response     Response     Mean time to Mean time to Mean time to
                                       Time (ms)    Standard                  response     bytes per    errors       resolve host establish    first byte  
                                                    Deviation                 length       second                                 connection                
                                                    (ms)                                                                                                    

Test 1       0            1            ?            0.00         0.00         ?            0.00         0            ?            ?            ?             "181"

Totals       0            1            ?            0.00         0.00         ?            0.00         0            ?            ?            ?            

  Tests resulting in error only contribute to the Errors column.          
  Statistics for individual tests can be found in the data file, including
  (possibly incomplete) statistics for erroneous tests. Composite tests  
  are marked with () and not included in the totals.                      



2017-08-07 16:50:50,888 INFO  validation-0: Starting threads
2017-08-07 16:50:51,201 INFO  validation-0: Finished

[moon]

after removing  the "  before demical 8080, as follows:  


        public static String body = "{\n  \"kind\": \"Service\", \n  \"apiVersion\": \"v1\", \n  \"metadata\": {\n    \"name\": \"omc-tomcat7\"\n  }, \n  \"spec\": {\n    \"selector\": {\n      \"role\": \"omc-tomcat7\"\n    }, \n    \"ports\": [\n      {\n        \"protocol\": \"TCP\"\n      }, \n      {\n        \"port\": 8080\n      }, \n      {\n        \"targetPort\": 8080  \n      }\n    ]\n  }\n}"



--------------------------------------------------------------------
Then  the error result  is also show , the content is :
2017-08-07 16:54:57,527 INFO  The Grinder version 3.9.1
2017-08-07 16:54:57,541 INFO  Java(TM) SE Runtime Environment 1.7.0_51-b13: Java HotSpot(TM) 64-Bit Server VM (24.51-b03, mixed mode) on Windows 7 amd64 6.1
2017-08-07 16:54:57,549 INFO  time zone is CST (+0800)
2017-08-07 16:54:57,752 INFO  worker process 0 of agent number 0
2017-08-07 16:54:57,808 INFO  Instrumentation agents: byte code transforming instrumenter for Java; byte code transforming instrumenter for Java
2017-08-07 16:55:00,199 INFO  registered plug-in net.grinder.plugin.http.HTTPPlugin
2017-08-07 16:55:00,271 INFO  before process.
2017-08-07 16:55:00,292 INFO  Running "groovy181-resource.groovy" using GroovyScriptEngine running with groovy version: 2.2.1
2017-08-07 16:55:00,399 INFO  before thread.
2017-08-07 16:55:00,399 INFO  starting, will do 1 run
2017-08-07 16:55:00,399 INFO  Start time is 1502096100399 ms since Epoch
2017-08-07 16:55:00,439 INFO  before thread. init headers and cookies
2017-08-07 16:55:00,500 INFO  http://172.18.1.181:9326/api/v1/namespaces/default/services -> 422 Unprocessable Entity, 1214 bytes
2017-08-07 16:55:00,530 INFO  {"kind":"Status","apiVersion":"v1","metadata":{},"status":"Failure","message":"Service \"omc-tomcat7\" is invalid: [spec.ports[0].name: Required value, spec.ports[0].port: Invalid value: 0: must be between 1 and 65535, inclusive, spec.ports[0].targetPort: Invalid value: 0: must be between 1 and 65535, inclusive, spec.ports[1].name: Required value, spec.ports[2].name: Required value, spec.ports[2].port: Invalid value: 0: must be between 1 and 65535, inclusive]","reason":"Invalid","details":{"name":"omc-tomcat7","kind":"Service","causes":[{"reason":"FieldValueRequired","message":"Required value","field":"spec.ports[0].name"},{"reason":"FieldValueInvalid","message":"Invalid value: 0: must be between 1 and 65535, inclusive","field":"spec.ports[0].port"},{"reason":"FieldValueInvalid","message":"Invalid value: 0: must be between 1 and 65535, inclusive","field":"spec.ports[0].targetPort"},{"reason":"FieldValueRequired","message":"Required value","field":"spec.ports[1].name"},{"reason":"FieldValueRequired","message":"Required value","field":"spec.ports[2].name"},{"reason":"FieldValueInvalid","message":"Invalid value: 0: must be between 1 and 65535, inclusive","field":"spec.ports[2].port"}]},"code":422}

2017-08-07 16:55:00,532 INFO  application/json
2017-08-07 16:55:00,584 ERROR
Expected: is <200>
     got: <422>

java.lang.AssertionError:
Expected: is <200>
     got: <422>

        at TestRunner.test(groovy181-resource.groovy:83) ~[na:na]
        at net.grinder.scriptengine.groovy.junit.GrinderRunner.run(GrinderRunner.java:170) ~[ngrinder-groovy-3.4.1.jar:na]
        at net.grinder.scriptengine.groovy.GroovyScriptEngine$GroovyWorkerRunnable.run(GroovyScriptEngine.java:147) ~[ngrinder-groovy-3.4.1.jar:na]
        at net.grinder.engine.process.GrinderThread.run(GrinderThread.java:118) ~[grinder-core-3.9.1.jar:na]
2017-08-07 16:55:00,587 INFO  finished 1 run
2017-08-07 16:55:00,593 INFO  elapsed time is 195 ms
2017-08-07 16:55:00,593 INFO  Final statistics for this process:
2017-08-07 16:55:00,615 INFO  
             Tests        Errors       Mean Test    Test Time    TPS          Mean         Response     Response     Mean time to Mean time to Mean time to
                                       Time (ms)    Standard                  response     bytes per    errors       resolve host establish    first byte  
                                                    Deviation                 length       second                                 connection                
                                                    (ms)                                                                                                    

Test 1       0            1            ?            0.00         0.00         ?            0.00         0            ?            ?            ?             "181"

Totals       0            1            ?            0.00         0.00         ?            0.00         0            ?            ?            ?            

  Tests resulting in error only contribute to the Errors column.          
  Statistics for individual tests can be found in the data file, including
  (possibly incomplete) statistics for erroneous tests. Composite tests  
  are marked with () and not included in the totals.                      



2017-08-07 16:55:00,305 INFO  validation-0: Starting threads
2017-08-07 16:55:00,616 INFO  validation-0: Finished
+