相关疑难解决方法(0)

NotImplementedExceptionJava中是否有类似.NET的东西？

我正在尝试使用Jackson库通过使用JAXB注释将Java对象序列化为XML.但是,我在打印XML输出时遇到了一个问题.

这是我的示例代码用法:

ObjectMapper mapper = new XmlMapper();
mapper.enable(SerializationFeature.INDENT_OUTPUT);
String xml = mapper.writeValueAsString(person);

而且,我看到了以下异常.这里的问题是Jackson使用Stax2Writer作为XML编写器,而Stax2似乎不支持编写原始字符串(在这种情况下,DefaultPrettyPrinter尝试将"\n"写为原始字符串).

    com.fasterxml.jackson.databind.JsonMappingException: Not implemented (through reference chain: xml.serialization.jackson.dto.Person["name"])
    at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:232)
    at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:197)
    at com.fasterxml.jackson.databind.ser.std.StdSerializer.wrapAndThrow(StdSerializer.java:187)
    at com.fasterxml.jackson.dataformat.xml.ser.XmlBeanSerializer.serializeFields(XmlBeanSerializer.java:174)
    at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:152)
    at com.fasterxml.jackson.dataformat.xml.ser.XmlSerializerProvider.serializeValue(XmlSerializerProvider.java:92)
    at com.fasterxml.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:2818)
    at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsString(ObjectMapper.java:2275)
    at xml.serialization.jackson.SerializationTest.main(SerializationTest.java:46)
    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 com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: java.lang.UnsupportedOperationException: Not implemented
    at org.codehaus.stax2.ri.Stax2WriterAdapter.writeRaw(Stax2WriterAdapter.java:380)
    at org.codehaus.stax2.ri.Stax2WriterAdapter.writeRaw(Stax2WriterAdapter.java:373)
    at com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter$Lf2SpacesIndenter.writeIndentation(DefaultXmlPrettyPrinter.java:498)
    at com.fasterxml.jackson.dataformat.xml.util.DefaultXmlPrettyPrinter.writeLeafElement(DefaultXmlPrettyPrinter.java:271)
    at com.fasterxml.jackson.dataformat.xml.ser.ToXmlGenerator.writeString(ToXmlGenerator.java:489)
    at com.fasterxml.jackson.databind.ser.std.StringSerializer.serialize(StringSerializer.java:39)
    at com.fasterxml.jackson.databind.ser.std.StringSerializer.serialize(StringSerializer.java:21)
    at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:541)
    at com.fasterxml.jackson.dataformat.xml.ser.XmlBeanSerializer.serializeFields(XmlBeanSerializer.java:161)
    ... 10 more

有关如何解决它的任何想法？