是否可以用 json-path-2.2.0.jar 替换 com.jayway.jsonpath_0.8.1.wso2v1.jar答案

【问题标题】：Is it possible to replace com.jayway.jsonpath_0.8.1.wso2v1.jar with json-path-2.2.0.jar是否可以用 json-path-2.2.0.jar 替换 com.jayway.jsonpath_0.8.1.wso2v1.jar
【发布时间】：2017-05-16 20:20:05
【问题描述】：

我正在尝试在 ESB 5.0.0 中使用更新版本的 JsonPath，但出现以下错误

java.lang.NoClassDefFoundError: com/jayway/jsonpath/Configuration
    at net.sample.<init>(FuzzyJsonProvider.groovy:15)
    at net.sampel2(class.java:102)
    at net.class2(class.java:67)
    at net.class2(class.java:62)
    at net.class4.mediate(class.java:75)
    at org.apache.synapse.mediators.ext.ClassMediator.mediate(ClassMediator.java:84)
    at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:97)
    at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:59)
    at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:158)
    at org.apache.synapse.rest.Resource.process(Resource.java:343)
    at org.apache.synapse.rest.API.process(API.java:399)
    at org.apache.synapse.rest.RESTRequestHandler.apiProcess(RESTRequestHandler.java:123)
    at org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:101)
    at org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:69)
    at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:304)
    at org.apache.synapse.core.axis2.SynapseMessageReceiver.receive(SynapseMessageReceiver.java:75)
    at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
    at org.apache.synapse.transport.passthru.ServerWorker.processNonEntityEnclosingRESTHandler(ServerWorker.java:325)
    at org.apache.synapse.transport.passthru.ServerWorker.processEntityEnclosingRequest(ServerWorker.java:371)
    at org.apache.synapse.transport.passthru.ServerWorker.run(ServerWorker.java:151)
    at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
 Caused by: java.lang.ClassNotFoundException: com.jayway.jsonpath.Configuration cannot be found by sample_1.0.2_SNAPSHOT_1.0.0
    at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:475)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
    at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 24 more

我尝试将第 3 方 jar 放入适当的 lib 文件夹，一旦服务器启动，第 3 方 jar 就会显示在 dropins 文件夹中。如果可以更换旧的 jsonPath jar，有什么想法吗？

【问题讨论】：

标签： wso2 wso2esb

【解决方案1】：

简短的回答是否定的，因为 ESB 不会在加载 lib 后更新包命名空间。即 com.jayway...0.8.1 不会被 2.2.0 中的替换或更新

完成这项工作的最佳方法是使用Shadow 将您需要的库打包到您自己的 FatJar 中并将其加载到 ESB。

【讨论】：