Jersey FormDataBodyPart getValueAs导致“实体实例不包含未转换的内容”。

FormDataBodyPart part = ...;
String value = part.getValueAs(String.class);

if (part != null && part.getContentDisposition().getParameters().containsKey("filename")) {
    String value = part.getValueAs(String.class);
    // 处理value
} else {
    // 处理空值情况
}

public class MyTypeConverter implements MessageBodyReader<MyType> {
    @Override
    public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return type.equals(MyType.class);
    }

    @Override
    public MyType readFrom(Class<MyType> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, String> httpHeaders, InputStream entityStream) throws IOException, WebApplicationException {
        // 实现转换逻辑
        return new MyType();
    }
}

@Provider
public class MyTypeConverterProvider implements MessageBodyReader<MyType> {
    @Override
    public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return type.equals(MyType.class);
    }

    @Override
    public MyType readFrom(Class<MyType> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, String> httpHeaders, InputStream entityStream) throws IOException, WebApplicationException {
        // 实现转换逻辑
        return new MyType();
    }
}

try {
    String value = part.getValueAs(String.class);
    // 处理value
} catch (Exception e) {
    e.printStackTrace();
    // 记录日志
}