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Java的Type类和泛型的实战

package com.xiaoju.manhattan.themis.rpc.command;

import cn.hutool.core.util.TypeUtil;
import com.xiaoju.manhattan.financing.base.metric.util.ValidateUtil;
import com.xiaoju.manhattan.themis.rpc.annotation.ThemisRpcCommandMark;
import com.xiaoju.manhattan.themis.rpc.enums.RpcCommandEnum;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import lombok.extern.slf4j.Slf4j;
import org.springframework.core.annotation.AnnotationUtils;

@Slf4j
public abstract class AbstractRpcCommand<REQUEST, RESPONSE> implements
RpcCommand<REQUEST, RESPONSE> {

/**

  • 泛型抽取 REQUEST
    */
    public final Class REQUEST_CLASS;

/**

  • 泛型抽取 RESPONSE
    */
    public final Class RESPONSE_CLASS;

/**

  • 泛型抽取 REQUEST
    */
    protected final Type REQUEST_TYPE;

/**

  • 泛型抽取 RESPONSE
    */
    protected final Type RESPONSE_TYPE;

{
// 请求和响应类型赋值
REQUEST_TYPE = ((ParameterizedType) getClass()
.getGenericSuperclass()).getActualTypeArguments()[0];
RESPONSE_TYPE = ((ParameterizedType) getClass()
.getGenericSuperclass()).getActualTypeArguments()[1];
REQUEST_CLASS = (Class) TypeUtil.getClass(REQUEST_TYPE);
RESPONSE_CLASS = (Class) TypeUtil.getClass(RESPONSE_TYPE);
}

}

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