引用web3j jar包

<dependency>
   <groupId>org.web3j</groupId>
    <artifactId>core</artifactId>
    <version>3.3.1</version>
</dependency>

程式碼如下

package vip.coinbag.managemoneymatters;

import org.junit.Test;
import org.web3j.abi.TypeDecoder;
import org.web3j.
 
abi.datatypes.Address;
import org.web3j.abi.datatypes.generated.Uint256;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

/**
 * <p>類描述：。</p>
 *
 * @author jl
 * @version v1.0.0.1。
 * @since JDK1.8。
 * <p>建立日期：2018/11/1 9:44。</p>
 */
public class test
 
 {
    /**
     * <p>功能描述：解析以太坊查詢交易記錄中的input資料，獲取方法名、地址和金額。</p>
     * <p>jl</p>
     * @since JDK1.8
     * <p>建立日期：2018/11/9 17:15。</p>
     * <p>更新日期:[日期YYYY-MM-DD][更改人姓名][變更描述]。</p>
     */
    @Test
    public void decodeInput() throws NoSuchMethodException,
 
 InvocationTargetException, IllegalAccessException {
       String inputData = "0xa9059cbb00000000000000000000000035f5992e40facfcad742fcfcc1d94ee0581e9cb100000000000000000000000000000000000000000000003635c9adc5dea00000";
        String method = inputData.substring(0, 10);
        System.out.println(method);
        String to = inputData.substring(10, 74);
        String value = inputData.substring(74);
        Method refMethod = TypeDecoder.class.getDeclaredMethod("decode", String.class, int.class, Class.class);
        refMethod.setAccessible(true);
        Address address = (Address) refMethod.invoke(null, to, 0, Address.class);
        System.out.println(address.toString());
        Uint256 amount = (Uint256) refMethod.invoke(null, value, 0, Uint256.class);
        System.out.println(amount.getValue());
    }

}

結果如下

0xa9059cbb
0x35f5992e40facfcad742fcfcc1d94ee0581e9cb1
1000000000000000000000