相关疑难解决方法(0)

我有一个spring webservice,它返回一个json响应.我正在使用此处给出的示例来创建服务:http: //www.mkyong.com/spring-mvc/spring-3-mvc-and-json-example/

返回json的格式为:{"name":null,"staffName":["kfc-kampar","smith"]}

我想从返回的响应中删除任何空对象,所以它看起来像这样:{"staffName":["kfc-kampar","smith"]}

我在这里找到了类似的问题,但我已经能够得到一个解决方案,例如

在Spring中配置ObjectMapper

如何在使用基于spring注释的配置时配置MappingJacksonHttpMessageConverter？

配置jacksonObjectMapper不能在spring mvc 3中工作

如何配置spring mvc 3在json响应中不返回"null"对象？

Spring配置@ResponseBody JSON格式

Jackson + Spring3.0.5自定义对象映射器

通过阅读这些和其他来源,我认为实现我想要的最简洁的方法是使用Spring 3.1和可以在mvc-annotation中配置的消息转换器.我更新的spring配置文件是:

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
    http://www.springframework.org/schema/beans     
    http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-3.1.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">

<context:component-scan base-package="com.mkyong.common.controller" />

<mvc:annotation-driven>
    <mvc:message-converters>
        <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
            <property name="prefixJson" value="true" />
            <property name="supportedMediaTypes" value="application/json" />
            <property name="objectMapper">
                <bean class="org.codehaus.jackson.map.ObjectMapper">
                    <property name="serializationInclusion" value="NON_NULL"/>
                </bean>
            </property>
        </bean>
    </mvc:message-converters>
</mvc:annotation-driven>

服务类与mkyong.com网站上的服务类相同,只是我注释了商店名称变量的设置,所以它是null,即

@Controller
@RequestMapping("/kfc/brands")
public class JSONController {
    @RequestMapping(value="{name}", method = RequestMethod.GET)
    @ResponseStatus(HttpStatus.OK) 
    public @ResponseBody Shop getShopInJSON(@PathVariable String name) …

想象一下,我在Spring 3 @Controller中有这个带注释的方法

@RequestMapping("")
public @ResponseBody MyObject index(@RequestBody OtherObject obj) {
    MyObject result = ...;
    return result;
}

但我需要配置输出json格式,就像我在做:

ObjectMapper om = new ObjectMapper();
om.configure(JsonGenerator.Feature.QUOTE_FIELD_NAMES, true);
om.getSerializationConfig()
        .setSerializationInclusion(JsonSerialize.Inclusion.NON_DEFAULT);
om.getSerializationConfig()
        .set(SerializationConfig.Feature.INDENT_OUTPUT, false);

有没有办法配置这种行为？

我发现了几个相关的问题,但我不确定如何使它们适应我的具体情况:

1. spring responsejson with responsebody
2. 谁在S​​pring MVC中设置响应内容类型(@ResponseBody)

谢谢 !

json响应的示例如下所示:

{"publicId":"123","status":null,"partner":null,"description":null}

截断响应中的所有空对象会很好.在这种情况下,响应将变为{"publicId":"123"}.

有什么建议？谢谢!

PS:我想我可以在泽西岛做到这一点.另外我相信他们都使用Jackson作为JSON处理器.

后来添加:我的配置:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <!-- Scans the classpath of this application for @Components to deploy as beans -->
    <context:component-scan base-package="com.SomeCompany.web" />

    <!-- Application Message Bundle -->
    <bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
        <property name="basename" value="/WEB-INF/messages/messages" />
        <property name="cacheSeconds" value="0" />
    </bean>

    <!-- Configures Spring MVC -->
    <import resource="mvc-config.xml" />

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

    <!-- Configures the @Controller programming model …