406不可接受：Spring MVC + JSON

时间：2015-07-10 08:18:44

标签： json rest spring-mvc tomcat

我知道这个问题已被多次询问，虽然我尝试了所说的但我仍然有这个问题。 我正在尝试生成一个简单的JSON响应。现在我得到406 Not Acceptable错误。 Tomcat说：“此请求标识的资源只能根据请求”接受“标题生成具有不可接受特征的响应。” 在tomcat / lib中我有杰克逊罐子。我正在使用带有Tomcat 7的Spring 1.1.0。 我在pom.xml中添加了依赖项：

<dependencies>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.4.1</version>
</dependency>

<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.4.1.1</version>
</dependency>

<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.13</version>
</dependency>

<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.13</version>
</dependency>
</dependencies>

CompaniesRestController.java 

 @RequestMapping(value = "/Companies", method = RequestMethod.GET)
    @ResponseBody
    public List<Companies> listCompaniess() {
        return new java.util.ArrayList<Companies>(companiesService.loadCompaniess());
    }

我在applicationContext.xml中添加了此代码段，如：reference中所述：

    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
    <property name="messageConverters">
      <util:list id="beanList">
        <ref bean="stringHttpMessageConverter"/>
        <ref bean="marshallingHttpMessageConverter"/>
      </util:list>
    </property
</bean>

<bean id="stringHttpMessageConverter" 
       class="org.springframework.http.converter.StringHttpMessageConverter"/>

<bean id="marshallingHttpMessageConverter" 
      class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter">
  <property name="marshaller" ref="castorMarshaller" />
  <property name="unmarshaller" ref="castorMarshaller" />
</bean>

但是徒劳无功，这一切都没有效果。

我要感谢您的建议。

PS：我使用脚手架来生成我的CRUD应用程序。

-Regards

实际上，当我编辑我的时候 的 CompaniesRestController.java 

 @RequestMapping(value = "/Companies", method = RequestMethod.GET)
    @ResponseBody
    public String<Companies> listCompaniess() {
        return new java.util.ArrayList<Companies>(companiesService.loadCompaniess()).toString();
    }

或

@RequestMapping(value = "/Companies", method = RequestMethod.GET,produces="application/json")

    public @ResponseBody Object[] listCompaniess() {
        return new java.util.ArrayList<Companies>(companiesService.loadCompaniess()).toArray();

    }

我不再拥有406error，我得到一个包含我在数据库中的记录的数组，但作为一个数组，而不是一个json ......

我试过使用JSONObject，但仍然有相同的问题，我使用脚手架来创建我的spring mvc应用程序，然后我将它转换为Maven项目以便添加jackson库和依赖项，但是当我转发它，所有项目崩溃并抛出以下错误：

2015-07-15 17:32:31,299 INFO [localhost-startStop-1] LobCreatorBuilder - HHH000424: Disabling contextual LOB creation as createClob() method threw error : java.lang.reflect.InvocationTargetException
2015-07-15 17:32:31,314 WARN [localhost-startStop-1] JtaPlatformInitiator - HHH000427: Using deprecated org.hibernate.transaction.TransactionManagerLookup strategy [hibernate.transaction.manager_lookup_class], use newer org.hibernate.service.jta.platform.spi.JtaPlatform strategy instead [hibernate.transaction.jta.platform]
2015-07-15 17:32:31,314 INFO [localhost-startStop-1] JtaPlatformInitiator - HHH000428: Encountered legacy TransactionManagerLookup specified; convert to newer org.hibernate.service.jta.platform.spi.JtaPlatform contract specified via hibernate.transaction.jta.platform setting
2015-07-15 17:32:31,314 INFO [localhost-startStop-1] ASTQueryTranslatorFactory - HHH000397: Using ASTQueryTranslatorFactory
2015-07-15 17:32:31,361 INFO [localhost-startStop-1] Version - Hibernate Validator 4.2.0.Final
2015-07-15 17:32:31,642 INFO [localhost-startStop-1] TransactionFactoryInitiator - HHH000268: Transaction strategy: org.hibernate.engine.transaction.internal.jta.CMTTransactionFactory
No properties path set - looking for transactions.properties in classpath...
transactions.properties not found - looking for jta.properties in classpath...
Using init file: /D:/Users/ielhazit/Workspaces/MyEclipse%202015%20CI/.metadata/.me_tcat7/webapps/chouette/WEB-INF/classes/jta.properties
juil. 15, 2015 5:32:32 PM org.apache.catalina.core.ApplicationContext log
Infos: Initializing Spring FrameworkServlet 'chouette Servlet'
2015-07-15 17:32:32,471 ERROR [localhost-startStop-1] FrameworkServlet - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.validation.beanvalidation.OptionalValidatorFactoryBean#0': Invocation of init method failed; nested exception is java.lang.AbstractMethodError: org.hibernate.validator.engine.ConfigurationImpl.getDefaultParameterNameProvider()Ljavax/validation/ParameterNameProvider;
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1568)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:540)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:725)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:624)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:672)
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:543)
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484)
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    at javax.servlet.GenericServlet.init(GenericServlet.java:158)
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1284)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1197)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1087)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5231)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5518)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:649)
    at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1247)
    at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1897)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.AbstractMethodError: org.hibernate.validator.engine.ConfigurationImpl.getDefaultParameterNameProvider()Ljavax/validation/ParameterNameProvider;
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:209)
    at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:194)
    at org.springframework.validation.beanvalidation.LocalValidatorFactoryBean.configureParameterNameProviderIfPossible(LocalValidatorFactoryBean.java:276)
    at org.springframework.validation.beanvalidation.LocalValidatorFactoryBean.afterPropertiesSet(LocalValidatorFactoryBean.java:245)
    at org.springframework.validation.beanvalidation.OptionalValidatorFactoryBean.afterPropertiesSet(OptionalValidatorFactoryBean.java:40)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1627)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1564)
    ... 32 more

任何想法 谢谢

1 个答案:

答案 0 :(得分：0)

映射请求的可生成媒体类型也可以由Spring @RequestMapping配置。

示例：@RequestMapping(value = "/list", method = RequestMethod.GET, produces = "application/json")

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