我已经为joda.money.Money类型编写了自定义（反）序列化器。我向对象映射器注册它们。但是当我部署我的war文件时，它说找不到joda.money.Money类型的序列化程序。
import org.joda.money.Money;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
public class MoneyDeserializer extends StdDeserializer<Money> {
private static final long serialVersionUID = 1L;
public MoneyDeserializer() {
super(Money.class);
}
@Override
public Money deserialize(JsonParser parser, DeserializationContext context)
throws IOException, JsonProcessingException {
...
}
}
在ObjectMapper中注册；
import org.codehaus.jackson.jaxrs.JacksonJsonProvider;
import org.joda.money.Money;
import com.fasterxml.jackson.core.Version;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.datatype.joda.JodaModule;
import xx.serializers.MoneyDeserializer;
import xx.serializers.MoneySerializer
@Provider
public class JsonProvider extends JacksonJsonProvider {
public JsonProvider() {
ObjectMapper mapper = new ObjectMapper();
mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
// Register <Money> (de)serializers
SimpleModule tstmodule = new SimpleModule("MyModule", new Version(1, 0, 0, null));
tstmodule.addDeserializer(Money.class, new MoneyDeserializer());
tstmodule.addSerializer(Money.class, new MoneySerializer());
mapper.registerModule(tstmodule);
mapper.registerModule(new JodaModule());
}
}
2:24:00,860 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 151) MSC000001: Failed to start service jboss.undertow.deployment.default-server.default-host./api: org.jboss.msc.service.StartException in service jboss.undertow.deployment.default-server.default-host./api: java.lang.RuntimeException: Unable to find a constructor that takes a String param or a valueOf() or fromString() method for javax.ws.rs.QueryParam("sale") on public javax.ws.rs.core.Response com.xx.getItems(java.lang.Integer,java.lang.Integer,java.lang.String,java.lang.Long,org.joda.money.Money,java.lang.String,java.lang.Long,java.time.LocalDateTime,java.time.LocalDateTime,java.time.LocalDateTime,java.lang.Long,java.lang.Long,java.lang.Long,java.lang.Long,java.lang.String) for basetype: org.joda.money.Money
at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:85)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
at org.jboss.threads.JBossThread.run(JBossThread.java:320)
Caused by: java.lang.RuntimeException: Unable to find a constructor that takes a String param or a valueOf() or fromString() method for javax.ws.rs.QueryParam("sale") on public javax.ws.rs.core.Response xx.getItems(java.lang.Integer,java.lang.Integer,java.lang.String,java.lang.Long,org.joda.money.Money,java.lang.String,java.lang.Long,java.time.LocalDateTime,java.time.LocalDateTime,java.time.LocalDateTime,java.lang.Long,java.lang.Long,java.lang.Long,java.lang.Long,java.lang.String) for basetype: org.joda.money.Money
at org.jboss.resteasy.core.StringParameterInjector.initialize(StringParameterInjector.java:218)
最佳答案
我看到您在ObjectMapper构造函数中创建了JsonProvider，但从未使用过它。您可能应该在构造函数的最后使用JsonProvider上的setMapper(mapper);。
但是我认为这不会解决您的问题。我认为问题在于jaxrs仅了解简单的数据类型，如果您想使用自定义类，则必须为基于字符串的@*Param实现某种形式的字符串编组
从您的堆栈跟踪中，我看到您使用了jboss，所以这可能有帮助吗？ https://docs.jboss.org/resteasy/docs/3.0.12.Final/userguide/html/StringConverter.html
如果您有一个valueOf（）或该字符串构造函数的类怎么办
不存在或不适合HTTP请求？ JAX-RS 2.0具有
javax.ws.rs.ext.ParamConverterProvider可以在这种情况下提供帮助。
有关更多详细信息，请参见javadoc。
https://docs.oracle.com/javaee/7/api/javax/ws/rs/ext/ParamConverterProvider.html
这样的事情可能应该起作用：
@Provider
public class MoneyConverterProvider implements ParamConverterProvider {
private final MoneyConverter converter = new MoneyConverter();
@Override
public <T> ParamConverter<T> getConverter(Class<T> rawType, Type genericType, Annotation[] annotations) {
if (!rawType.equals(Money.class)) return null;
return (ParamConverter<T>) converter;
}
public class MoneyConverter implements ParamConverter<Money> {
public Money fromString(String value) {
if (value == null ||value.isEmpty()) return null; // change this for production
return Money.of(CurrencyUnit.EUR, Double.parseDouble(value));
}
public String toString(Money value) {
if (value == null) return "";
return value.getAmount().toString(); // change this for production
}
}
}
关于java - jaxrs找不到我的joda.money类型的自定义(反)序列化器，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/37041353/