泛化调用时接口的参数是抽象类,使用其实现类作为参数调不通 · Issue #5397 · apache/dubbo

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you can do it like that

package org.apache.dubbo.samples.generic.call.api;
public abstract class A 
public class B extends A 
public interface HelloService {
    String sayHello(A a);
        Map parameter = new HashMap();
        parameter.put("class", "org.apache.dubbo.samples.generic.call.api.B");
        parameter.put("name", "qinliujie");
        Object result = genericService.$invoke("sayHello", new String[]{"org.apache.dubbo.samples.generic.call.api.A"}, new Object[]{parameter});
          接口定义：

SingleResult<CalculateSalaryFeedbackDTO> getCalculateSalaryFeedback(Long customerId, String salaryType, String requestId, Pair<String, Long> calculateSettingPair);

泛化调用:

`      Map<String, Object> pairMap = Maps.newHashMap();

pairMap.put("left", 3L);

pairMap.put("right", 4L);

pairMap.put("class", "org.apache.commons.lang3.tuple.MutablePair");
    Object result = genericService.$invoke("getCalculateSalaryFeedback",
        new String[] { "java.lang.Long", "java.lang.String", "java.lang.String", "org.apache.commons.lang3.tuple.Pair"},
        new Object[] { 1L, "2", "3", pairMap});
    System.out.println(result);`
you can put "class" key with Chinese class full name for value in your Pojo Map when generic invoke
thanks
接口定义：

SingleResult<CalculateSalaryFeedbackDTO> getCalculateSalaryFeedback(Long customerId, String salaryType, String requestId, Pair<String, Long> calculateSettingPair);

泛化调用:

` Map<String, Object> pairMap = Maps.newHashMap();

pairMap.put("left", 3L);

pairMap.put("right", 4L);

pairMap.put("class", "org.apache.commons.lang3.tuple.MutablePair");
    Object result = genericService.$invoke("getCalculateSalaryFeedback",
        new String[] { "java.lang.Long", "java.lang.String", "java.lang.String", "org.apache.commons.lang3.tuple.Pair"},
        new Object[] { 1L, "2", "3", pairMap});
    System.out.println(result);`
好的 我明白了 谢谢
you can do it like that
package org.apache.dubbo.samples.generic.call.api;
public abstract class A 
public class B extends A 
public interface HelloService {
    String sayHello(A a);
        Map parameter = new HashMap();
        parameter.put("class", "org.apache.dubbo.samples.generic.call.api.B");
        parameter.put("name", "qinliujie");
        Object result = genericService.$invoke("sayHello", new String[]{"org.apache.dubbo.samples.generic.call.api.A"}, new Object[]{parameter});