java消息转换器在spring中不工作

1 年，5 月 Questions & Answers 2141

您好，我正在使用SpringJPA和hibernate制作一个web应用程序。在我的servlet中。xml文件我放置了以下代码行

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context" 
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:task="http://www.springframework.org/schema/task"
xsi:schemaLocation="
    http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd 
    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd
    http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd">


  <mvc:annotation-driven>
    <mvc:message-converters register-defaults="true">
        <beans:bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
            <beans:property name="prefixJson" value="true"/>
            <beans:property name="supportedMediaTypes" value="application/json"/>
            <beans:property name="objectMapper">
                <beans:ref bean="JacksonObjectMapper" />
            </beans:property>
        </beans:bean>   
    </mvc:message-converters>
</mvc:annotation-driven>

<context:component-scan base-package="com.abc.*.controller" />


<util:properties id="portalProperties" location="classpath:portal.abc.properties"></util:properties>
<util:properties id="imageProperties" location="classpath:image.properties"></util:properties>
<tx:annotation-driven />


<task:executor id="asyncExecutor" pool-size="25"/>
<task:annotation-driven executor="asyncExecutor" /> 


<annotation-driven  conversion-service="applicationConversionService" />    

<resources mapping="/resources/**" location="/resources/" />



<beans:bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
  <beans:property name="mediaTypes">
    <beans:map>
      <beans:entry key="html" value="text/html"/>
      <beans:entry key="json" value="application/json"/>
    </beans:map>
  </beans:property>
  <beans:property name="viewResolvers">
    <beans:list>
      <beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <beans:property name="prefix" value="/WEB-INF/views/" />
        <beans:property name="suffix" value=".jsp" />
    </beans:bean>
    </beans:list>
  </beans:property>
  <beans:property name="defaultViews">
    <beans:list>
      <beans:bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView">
        <beans:property name="prefixJson" value="true"/>
      </beans:bean>
    </beans:list>
  </beans:property>
</beans:bean>


<beans:bean id="JacksonObjectMapper" class="com.fasterxml.jackson.databind.ObjectMapper" />

<beans:bean id="multipartResolver"
    class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>
    <mvc:resources mapping="/images/**" location="/images/" />
    <mvc:resources mapping="/css/**" location="/css/" />
    <mvc:resources mapping="/style.css" location="/style.css" />
    <mvc:resources mapping="/**" location="/" />

<beans:bean id="validator"
    class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean" />

<beans:bean id="applicationConversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
    <beans:property name="converters">
    <beans:list>
        <beans:bean class="com.abc.util.StringTrimmingConverter"/>
    </beans:list>
    </beans:property>
</beans:bean>



<mvc:interceptors>
    <beans:bean id="webContentInterceptor" class="org.springframework.web.servlet.mvc.WebContentInterceptor">
            <beans:property name="cacheSeconds" value="0"/>
            <beans:property name="useExpiresHeader" value="false"/>
            <beans:property name="useCacheControlHeader" value="true"/>
            <beans:property name="useCacheControlNoStore" value="true"/>
        </beans:bean>     
</mvc:interceptors>

在上面的文件中，我提到了消息转换器。但是，当我要求一个售后服务请求时，它给了我一些价值观

The server refused this request because the request entity is in a format not supported by the requested resource for the requested method.

我的pom。xml代码片段

<dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-mapper-asl</artifactId>
        <version>1.9.13</version>
    </dependency>
    <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-core-asl</artifactId>
        <version>1.9.13</version>
    </dependency>
        <dependency>  
            <groupId>com.fasterxml.jackson.core</groupId>  
            <artifactId>jackson-core</artifactId>  
            <version>2.1.0</version>  
        </dependency>  
        <dependency>  
            <groupId>com.fasterxml.jackson.core</groupId>  
            <artifactId>jackson-databind</artifactId>  
            <version>2.1.0</version>  
        </dependency>  
        <dependency>  
            <groupId>com.fasterxml.jackson.core</groupId>  
            <artifactId>jackson-annotations</artifactId>  
            <version>2.1.0</version>  
        </dependency>

我可以返回json，但无法在请求正文中接受json。我一直保持着

Content-Type: application/json

调用web服务时在我的标题中。任何人都可以帮助我理解为什么我的应用程序无法接受json数据。我的控制器代码片段

@RequestMapping(value = "/saveTimings", method = RequestMethod.POST)
public @ResponseBody
Outlet saveTimings(@RequestBody Timing timing) throws Exception {

    return timing;
}

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java消息转换器在spring中不工作

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