org.apache.camel.NoTypeConversionAvailableException: No type converter available to convert from type:

Question

I have multipart file in the first place and I want to send it to camel pipeline and save this file with original name.

my code:

@Autowired
ProducerTempl         


        

Answer 1

You have to add the service discovery file named TypeConverter in the META-INF directory.

src\main\resources\META-INF\services\org\apache\camel\TypeConverter 

This file contains the fully qualified name of the @Converter class.

e.g

mypackage.MultiPartFileToFileConvertor 

Also see the example from Camel in action 2 in Github https://github.com/camelinaction/camelinaction2/tree/b6a43abf9e0d4ec4e3753ebd735bb3448f98194b/chapter3/converter .

Also the book Chapter 3.6 explains how the discovery and loading of custom converters work in full detail.

Answer 2

An example of a type converter using SpringBoot which will be automatically picked up using Camel 2.23.0 or later.

@Component
public class MyPackageTypeConverter implements TypeConverters {

  private final ObjectMapper mapper;

  @Autowired
  public MyPackageTypeConverter(ObjectMapper mapper) {
    this.mapper = mapper;
  }

  @Converter
  public byte[] myPackageToByteArray(MyPackage source) {
    try {
      return mapper.writeValueAsBytes(source);
    } catch (JsonProcessingException e) {
      throw new RuntimeException(e);
    }
  }

  @Converter
  public MyPackage byteArrayToMyPackage(byte[] source) {
    try {
      return mapper.readValue(source, MyPackage.class);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
  }

}