java.lang.NoSuchMethodError: org.springframework.http.MediaType.getCharset()Ljava/nio/charset/Charset

java.lang.NoSuchMethodError: org.springframework.http.MediaType.getCharset()Ljava/nio/charset/Charset

提问by Zack Macomber

When I attempt to run my TestNGtests via antI am getting java.lang.NoSuchMethodError: org.springframework.http.MediaType.getCharset()Ljava/nio/charset/Charset(see below for full exception)

当我尝试运行我的TestNG测试时，ant我得到了java.lang.NoSuchMethodError: org.springframework.http.MediaType.getCharset()Ljava/nio/charset/Charset（完整的例外见下文）

I have no trouble compiling or running my web application but can't run tests via ant. I'm fairly certain this is a class loading issue but not sure what order class loading should be done at runtime. I'm using Spring 4.3.1 and Spring Security 4.1.1.

我编译或运行我的 Web 应用程序没有问题，但无法通过 ant 运行测试。我相当确定这是一个类加载问题，但不确定在运行时应该按什么顺序加载类。我正在使用 Spring 4.3.1 和 Spring Security 4.1.1。

Is there a particular order to load my jars such that the "correct" version of org.springframework.http.MediaTypeis used?

是否有特定的顺序来加载我的罐子，以便使用“正确”的版本org.springframework.http.MediaType？

[testng] org.testng.TestNGException: 
   [testng] An error occurred while instantiating class com.avada.rest.api.GroupsIntTest: org.springframework.http.MediaType.getCharset()Ljava/nio/charset/Charset;
   [testng]     at org.testng.internal.ClassHelper.createInstance1(ClassHelper.java:388)
   [testng]     at org.testng.internal.ClassHelper.createInstance(ClassHelper.java:290)
   [testng]     at org.testng.internal.ClassImpl.getDefaultInstance(ClassImpl.java:125)
   [testng]     at org.testng.internal.ClassImpl.getInstances(ClassImpl.java:191)
   [testng]     at org.testng.TestClass.getInstances(TestClass.java:104)
   [testng]     at org.testng.TestClass.initTestClassesAndInstances(TestClass.java:90)
   [testng]     at org.testng.TestClass.init(TestClass.java:82)
   [testng]     at org.testng.TestClass.<init>(TestClass.java:45)
   [testng]     at org.testng.TestRunner.initMethods(TestRunner.java:409)
   [testng]     at org.testng.TestRunner.init(TestRunner.java:247)
   [testng]     at org.testng.TestRunner.init(TestRunner.java:217)
   [testng]     at org.testng.TestRunner.<init>(TestRunner.java:161)
   [testng]     at org.testng.SuiteRunner$DefaultTestRunnerFactory.newTestRunner(SuiteRunner.java:555)
   [testng]     at org.testng.SuiteRunner.init(SuiteRunner.java:168)
   [testng]     at org.testng.SuiteRunner.<init>(SuiteRunner.java:117)
   [testng]     at org.testng.TestNG.createSuiteRunner(TestNG.java:1359)
   [testng]     at org.testng.TestNG.createSuiteRunners(TestNG.java:1346)
   [testng]     at org.testng.TestNG.runSuitesLocally(TestNG.java:1200)
   [testng]     at org.testng.TestNG.runSuites(TestNG.java:1124)
   [testng]     at org.testng.TestNG.run(TestNG.java:1096)
   [testng]     at org.testng.TestNG.privateMain(TestNG.java:1425)
   [testng]     at org.testng.TestNG.main(TestNG.java:1394)
   [testng] Caused by: java.lang.NoSuchMethodError: org.springframework.http.MediaType.getCharset()Ljava/nio/charset/Charset;
   [testng]     at org.springframework.web.client.RestTemplate$AcceptHeaderRequestCallback.getSupportedMediaTypes(RestTemplate.java:757)
   [testng]     at org.springframework.web.client.RestTemplate$AcceptHeaderRequestCallback.doWithRequest(RestTemplate.java:733)
   [testng]     at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:617)
   [testng]     at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:580)
   [testng]     at org.springframework.web.client.RestTemplate.getForObject(RestTemplate.java:287)
   [testng]     at com.avada.rest.api.ApiTestClient.getAll(ApiTestClient.java:81)
   [testng]     at com.avada.rest.api.GroupsIntTest.<clinit>(GroupsIntTest.java:17)
   [testng]     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
   [testng]     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
   [testng]     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
   [testng]     at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
   [testng]     at org.testng.internal.ObjectFactoryImpl.newInstance(ObjectFactoryImpl.java:29)
   [testng]     at org.testng.internal.ClassHelper.createInstance1(ClassHelper.java:377)
   [testng]     ... 21 more
   [testng] The tests failed.

采纳答案by Zack Macomber

Unbelievable...foiled by class loading issues once again...an uber jar named activemq-minimal-5.13.3.jarhad references to springjars in it that was causing the conflict. activemq-minimal-5.13.3.jarcomes before springalphabetically so the classes in that activemqjar were being loaded/used over the springjars. Updated my ant build to load the springclasses first and now I'm all set.

令人难以置信……再次被类加载问题所困扰……一个名为 uber jar 的 jaractivemq-minimal-5.13.3.jar引用了spring导致冲突的 jar。 activemq-minimal-5.13.3.jar来之前spring按字母顺序，以便在这些类activemq广口瓶中被装载/过所使用的spring广口瓶中。更新了我的 ant 构建以spring首先加载类，现在我已经准备好了。

The way I found out is I put all of my 3rd party libs together in a "Test" project and added/deleted jars (with somewhat of an inclination where the problem was) until I was able to pinpoint where the class loading issue was.

我发现的方法是我将所有 3rd 方库放在一个“测试”项目中并添加/删除罐子（有点倾向于问题所在），直到我能够查明类加载问题的位置。

回答by Issam EL-ATIF

org.springframework.http.MediaType.getCharset()was introduced since 4.3 if java did not find it that mean that you have a spring-core version below 4.3.1 in your classpath which get loaded and used.

org.springframework.http.MediaType.getCharset()从 4.3 开始引入，如果 java 没有找到它，这意味着你的类路径中有一个低于 4.3.1 的 spring-core 版本，它被加载和使用。

回答by vaquar khan

In spring latest version they have modified

在春季最新版本中，他们已修改

org.springframework.http;

org.springframework.http;

MediaType contentType = headers.getContentType();

Old :

老的 ：

      contentType.getCharSet()

New :

新的 ：

     contentType.getCharset()