Java Jackson@JsonIgnoreType无法处理静态内部类
我有几个使用builder模式的模型对象,我正试图通过springmvc与Jackson进行序列化。问题是,我不希望内部静态生成器类与外部类一起序列化。我曾尝试在各个getter方法上使用@JsonIgnore,但最终得到的是一个空对象。我还尝试在内部类本身上使用@JsonIgnoreType,但似乎没有任何效果。有人知道如何让Jackson忽略一个静态的内部类吗?提前谢谢 使用Spring 3.2.2和Jackson 2.2.1 带生成器的简单类Java Jackson@JsonIgnoreType无法处理静态内部类,java,json,spring,jackson,Java,Json,Spring,Jackson,我有几个使用builder模式的模型对象,我正试图通过springmvc与Jackson进行序列化。问题是,我不希望内部静态生成器类与外部类一起序列化。我曾尝试在各个getter方法上使用@JsonIgnore,但最终得到的是一个空对象。我还尝试在内部类本身上使用@JsonIgnoreType,但似乎没有任何效果。有人知道如何让Jackson忽略一个静态的内部类吗?提前谢谢 使用Spring 3.2.2和Jackson 2.2.1 带生成器的简单类 public final class Addr
public final class Address {
private final String street;
private final String city;
private final String state;
private Address(Address.Builder addressBuilder) {
street = addressBuilder.street;
city = addressBuilder.city;
state = addressBuilder.state;
}
public static Address.Builder newBuilder() {
return new Address.Builder();
}
@JsonIgnoreType // has no effect
public static final class Builder {
private String street;
private String city;
private String state;
private Builder() {}
public Builder street(String street) {
this.street = street;
return this;
}
...
// Java Beans setters/getters used by Spring
public void setStreet(String street) {
this.street = street;
}
public String getStreet() {
return street;
}
...
public Address build() {
return new Address(this);
}
}
...
}
SpringXML配置
<bean id="jacksonObjectMapper" class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
<property name="failOnEmptyBeans" value="false" />
<property name="simpleDateFormat" value="MM/dd/yyyy" />
</bean>
...
<bean id="contentNegotiatingViewResolver" class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver" p:order="3">
<property name="defaultViews">
<bean class="org.springframework.web.servlet.view.json.MappingJackson2JsonView" p:objectMapper-ref="jacksonObjectMapper" p:extractValueFromSingleKeyModel="true" />
</property>
</bean>
预期结果
{"builder":{"street":"1234 Some street"},"address":{"street":"1234 Some street","city":"Some City","state":"Some State"}}
{"street":"1234 Some street","city":"Some City","state":"Some State"}
@Controller
@Validated
@RequestMapping("/address")
public class AddressController extends AbstractController {
@Resource private AddressService addressService;
@RequestMapping("/clean")
public Address cleanAddress(@Validated({AddressGroup.Domestic.class}) Address.Builder address) {
return addressService.cleanAddress(address.build());
}
}
这是用于返回地址对象的Spring控制器
{"builder":{"street":"1234 Some street"},"address":{"street":"1234 Some street","city":"Some City","state":"Some State"}}
{"street":"1234 Some street","city":"Some City","state":"Some State"}
@Controller
@Validated
@RequestMapping("/address")
public class AddressController extends AbstractController {
@Resource private AddressService addressService;
@RequestMapping("/clean")
public Address cleanAddress(@Validated({AddressGroup.Domestic.class}) Address.Builder address) {
return addressService.cleanAddress(address.build());
}
}
您的控制器处理程序方法中缺少
@ResponseBody
。能否显示将对象传递给jackson进行序列化的代码?我已经添加了示例控制器code缺少@ResponseBody?看起来这解决了问题。我认为视图解析器中的p:extractValueFromSingleKeyModel=“true”
属性也会有同样的效果。但我想我错了。非常感谢你。尽管如此,您会发现@JsonIgnoreType也会解决这个问题。