DAPP矩阵公排互助系统开发技术方案
区块链是分布式数据存储、点对点传输、共识机制、加密算法等计算机技术的新型应用模式。所谓共识机制是区块链系统中实现不同节点之间建立信任、获取权益的数学算法。I88智能合约I928系统开发8024
区块链技术的内涵可概括为:在缺少可信任的中央节点和可信任的通道的情况下,分布在网络中的各个节点应如何达成共识。区块链主要的优势是无需中介参与、过程透明且成本很低、数据高度安全。所以如果在这三个方面有任意一个需求的行业都有机会使用区块链技术
mapping(uint=>shop)shops;//映射类型是获取区块地址、目标对象的方法
mapping(address=>bool)shopss;
mapping(address=>uint)shopids;
mapping(uint=>shoppoint)shoppoints;
struct shop{//定义商店对象,并设置对象属性
uint shopId;
address shopOwner;
uint shopBalance;
}
struct shoppoint{//A set of points from a shop to a customer
uint shopId;
address customer;
uint point;
}
//SPDX-License-Identifier:MIT
pragma solidity^0.8.13;
//映射
contract Mapping{
//address=>uint
mapping(address=>uint)public map;
//取值
function get(address _addr)public view returns(uint){
//如果值未设置,则返回默认值
return map[_addr];
}
//设置
function set(address _addr,uint i)public{
map[_addr]=i;
}
//删除
function remove(address _addr)public{
//删除不改变数据长度
delete map[_addr];
}
}
package com.edu.service;
configuration
public class fruitservice{
autowired
private apple apple;
autowired
private ginseng ginseng;
//定义一个产生bean的方法
bean(name="getapple")
public fruit<?>getapple(){
system.out.println(apple.getclass().getname().hashcode);
system.out.println(ginseng.getclass().getname().hashcode);
return new apple();
}
}
/*
*测试类
*/
runwith(blockjunit4classrunner.class)
public class config{
public config(){
super("classpath:spring-fruit.xml");
}
test
public void test(){
super.getbean("getapple");//这个bean从哪来,
//从上面的 bean下面的方法中返回的是一个apple类实例对象
}
}
区块链技术的内涵可概括为:在缺少可信任的中央节点和可信任的通道的情况下,分布在网络中的各个节点应如何达成共识。区块链主要的优势是无需中介参与、过程透明且成本很低、数据高度安全。所以如果在这三个方面有任意一个需求的行业都有机会使用区块链技术
mapping(uint=>shop)shops;//映射类型是获取区块地址、目标对象的方法
mapping(address=>bool)shopss;
mapping(address=>uint)shopids;
mapping(uint=>shoppoint)shoppoints;
struct shop{//定义商店对象,并设置对象属性
uint shopId;
address shopOwner;
uint shopBalance;
}
struct shoppoint{//A set of points from a shop to a customer
uint shopId;
address customer;
uint point;
}
//SPDX-License-Identifier:MIT
pragma solidity^0.8.13;
//映射
contract Mapping{
//address=>uint
mapping(address=>uint)public map;
//取值
function get(address _addr)public view returns(uint){
//如果值未设置,则返回默认值
return map[_addr];
}
//设置
function set(address _addr,uint i)public{
map[_addr]=i;
}
//删除
function remove(address _addr)public{
//删除不改变数据长度
delete map[_addr];
}
}
package com.edu.service;
configuration
public class fruitservice{
autowired
private apple apple;
autowired
private ginseng ginseng;
//定义一个产生bean的方法
bean(name="getapple")
public fruit<?>getapple(){
system.out.println(apple.getclass().getname().hashcode);
system.out.println(ginseng.getclass().getname().hashcode);
return new apple();
}
}
/*
*测试类
*/
runwith(blockjunit4classrunner.class)
public class config{
public config(){
super("classpath:spring-fruit.xml");
}
test
public void test(){
super.getbean("getapple");//这个bean从哪来,
//从上面的 bean下面的方法中返回的是一个apple类实例对象
}
}