The bumpy road of referencing jar package json-path.jar in jmeter/idea

Talking about JMeter Before the error introduced in , Let's talk first. IDEA Introduction in json-path-xxx.jar Wrong question

Pictured , Introduce in the project json-path package .

FileInputStream fis = new FileInputStream(file);
Map<String, Object> loaded = (Map<String, Object>) yaml.load(fis);

String header_str = new JSONObject(loaded).toString();
String data = JsonPath.read(header_str,"$.sit.adminun");

Prompt at execution ：

Exception in thread "main" java.lang.NoClassDefFoundError: net/minidev/json/writer/JsonReaderI
    at com.jayway.jsonpath.internal.DefaultsImpl.<init>(DefaultsImpl.java:17)
    at com.jayway.jsonpath.internal.DefaultsImpl.<clinit>(DefaultsImpl.java:15)
    at com.jayway.jsonpath.Configuration.getEffectiveDefaults(Configuration.java:43)
    at com.jayway.jsonpath.Configuration.defaultConfiguration(Configuration.java:168)
    at com.jayway.jsonpath.internal.ParseContextImpl.<init>(ParseContextImpl.java:21)
    at com.jayway.jsonpath.JsonPath.read(JsonPath.java:550)
    at com.functions.ReadYaml.main(ReadYaml.java:33)
Caused by: java.lang.ClassNotFoundException: net.minidev.json.writer.JsonReaderI
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 7 more

reason , As the Internet says , Lack of package dependencies ！！！

Because we put the package into the project statically , I can't see json-path It depends on the package , But when through Maven When the download , I found that I downloaded several other packages ！！！ Run again and there will be no problem ~~（PS： It is also possible to statically introduce all dependent packages ）

 

Preliminary conclusion , It seems to simply quote json-path Will report a mistake , You need to add dependent packages . Next , Let's talk about it JMeter Simply by introducing json-path The problem of package error reporting .

JMeter Introduce error report

JMeter Problem description in ：

1、 stay jmeter Use in beanshell Script time , Use json-path-xxxxx.jar analysis json An error will be reported when the data is ：Error in method invocation: Static method read( java.lang.String, java.lang.String ) not found in class'com.jayway.jsonpath.JsonPath.

import com.jayway.jsonpath.JsonPath;

String s = prev.getResponseDataAsString();
String res = JsonPath.read(s,"$..idcard").toString();
log.info("-------------"+res);

  Specific error report ：

2022-07-25 21:14:58,749 ERROR o.a.j.u.BeanShellInterpreter: Error invoking bsh method: eval    Sourced file: inline evaluation of: ``import com.jayway.jsonpath.JsonPath;  String s = prev.getResponseDataAsString(); . . . '' : Typed variable declaration : Error in method invocation: Static method read( java.lang.String, java.lang.String ) not found in class'com.jayway.jsonpath.JsonPath'

2022-07-25 21:14:58,749 WARN o.a.j.e.BeanShellPostProcessor: Problem in BeanShell script: org.apache.jorphan.util.JMeterException: Error invoking bsh method: eval    Sourced file: inline evaluation of: ``import com.jayway.jsonpath.JsonPath;  String s = prev.getResponseDataAsString(); . . . '' : Typed variable declaration : Error in method invocation: Static method read( java.lang.String, java.lang.String ) not found in class'com.jayway.jsonpath.JsonPath'

Solution ：

programme 1： since idea There is a simple verification in that there is a lack of dependent packages , Then let's add a dependency package to him , And found that , These dependencies are packaged in lib There are... In the directory ！！！！ It still doesn't work ！！

programme 2： Write code , Code thinking ： class JsonUtil The method in ParaseJson encapsulation read Method , The first parameter is json character string , The second parameter is jsonpath, Export code as jar package , Package put path \apache-jmeter-5.0\lib\ext .

import com.jayway.jsonpath.JsonPath;

public class JsonUtil {
    public  String ParaseJson(String str,String paras){
        String res = JsonPath.read(str,paras).toString();
        return  res;

    }
}

The source of this solution ：jmeter Let's work it out :beanshell Use jsonpath analysis json Report errors

Author Baidu online disk  jmeterUtil.jar, Extraction code ：o0fr

Last ：

Speak true ,JMeter Zhongzhong still doesn't understand the root cause of this problem ... A clear boss asked for advice ~

Reference resources ：jmeter I quote jar package jsonpath The rough road ： - Let's have a look