如何通过杰克逊传递构造函数的参数？

如何通过杰克逊传递构造函数的参数？

您可以使用Jackson值注入功能将不属于输入JSON的对象引用作为构造函数参数传递。这是一个例子：

public class JacksonInjectExample {    private static final String JSON = "{"field1":"value1", "field2":123}";    // HttpResponse in your case    public static class ExternalObject {        @Override        public String toString() { return "MyExternalObject";        }    }    public static class Bean {        // make fields public to avoid writing getters in this example        public String field1;        public int field2;        private ExternalObject external;        public Bean(@JacksonInject final ExternalObject external) { this.external = external;        }        @Override        public String toString() { return "Bean{" +         "field1='" + field1 + ''' +         ", field2=" + field2 +         ", external=" + external +         '}';        }    }    public static void main(String[] args) throws IOException {        final ObjectMapper mapper = new ObjectMapper();        final Injectablevalues.Std injectablevalues = new Injectablevalues.Std();        injectablevalues.addValue(ExternalObject.class, new ExternalObject());        mapper.setInjectablevalues(injectablevalues);        final Bean bean = mapper.readValue(JSON, Bean.class);        System.out.println(bean);    }}

输出：

Bean{field1='value1', field2=123, external=MyExternalObject}