#先上代码

/**
 * 解析泛型类型
 * @param type
 * @return
 */
public static List<Class<?>> parseGenericType(Type type){
    List<Class<?>> rootList = new ArrayList<Class<?>>();
    if(type instanceof ParameterizedType){
        ParameterizedType pType = (ParameterizedType)type;
        rootList.add((Class<?>)pType.getRawType());
        for(Type at : pType.getActualTypeArguments()){
            List<Class<?>> childList = parseGenericType(at);
            rootList.addAll(childList);
        }
    }else{
        rootList.add((Class<?>)type);
    }
    return rootList;
}

public static JavaType parseJavaType(ObjectMapper jsonMapper, Type genericParameterType){
    List<Class<?>> list =  parseGenericType(genericParameterType);
    if(list==null || list.size()==1){
        return jsonMapper.getTypeFactory().constructType(genericParameterType);
    }
    Class<?>[] classes = list.toArray(new Class[list.size()]);
    Class<?>[] paramClasses = new Class[classes.length-1];
    System.arraycopy(classes,1,paramClasses,0,paramClasses.length);
    JavaType javaType = jsonMapper.getTypeFactory().constructParametrizedType(classes[0],classes[0],paramClasses);
    return javaType;
}

#使用例子

JavaType javaType = parseJavaType(objectMapper,method.getGenericReturnType());
MyBean bean = objectMapper.readValue(jsonStr, javaType);

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