复杂、繁杂、庞杂：图解七种代码耦合类型
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[星标]复杂、繁杂、庞杂：图解七种代码耦合类型.pdf（已转文字 + 提取配图）
正文
2022/6/12 21:42
IT JAVA 2021-12-11 10:05
#Java 54 # 8
JAVA
JAVA
java_fro nt
1
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2
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2.1
https://mp.weixin.qq.com/s/xLpb6gQ_BLoRMs6QbBjCRA 3/20
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AB
shardingKey
2.2
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ApolloAJSON
public class ApolloConfig {
@Value("${apollo.json.config}")
private String jsonConfig;
}
public class JsonConfig {
public int type;
public boolean switchOpen;
}
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public class OrderServiceImpl {
public void createOrder() {
String jsonConfig = apolloConfig.getJsonConfig();
JsonConfig config = JSONUtils.toBean(jsonConfig, JsonConfig.class);
if(config.getType() == TypeEnum.ORDER.getCode() && config.isSwitchOpen()) {
createBizOrder();
}
}
}
public class PayServiceImpl {
public void createPayOrder() {
String jsonConfig = apolloConfig.getJsonConfig();
JsonConfig config = JSONUtils.toBean(jsonConfig, JsonConfig.class);
if(config.getType() == TypeEnum.PAY.getCode() && config.isSwitchOpen()) {
createBizPayOrder();
}
}
}
2.3
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ApolloA
public class ApolloConfig {
@Value("${apollo.type.config}")
private int typeConfig;
}
public class OrderServiceImpl {
public void createOrder() {
if(apolloConfig.getTypeConfig() == TypeEnum.ORDER.getCode()) {
createBizOrder();
}
}
}
public class PayServiceImpl {
public void createPayOrder() {
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if(apolloConfig.getTypeConfig() == TypeEnum.PAY.getCode()) {
createBizPayOrder();
}
}
}
2.4
BAA
B
public class ModuleA {
private int type;
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private int type;
}
public class A {
private B b = new B();
public void methondA(int type) {
ModuleA moduleA = new ModuleA(type);
b.methondB(moduleA);
}
}
public class B {
public void methondB(ModuleA moduleA) {
if(moduleA.getType() == 1) {
action1();
} else if(moduleA.getType() == 2) {
action2();
}
}
}
2.5
JAVA
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2.6
JAVA
2.7
https://mp.weixin.qq.com/s/xLpb6gQ_BLoRMs6QbBjCRA 10/20
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if else
ABCA9
9B88C
77
public class OrderServiceImpl implements OrderService {
@Resource
private OrderMapper orderMapper;
@Override
public void createOrder(OrderBO orderBO) {
if (null == orderBO) {
throw new RuntimeException(" ");
}
if (OrderTypeEnum.isNotValid(orderBO.getType())) {
throw new RuntimeException(" ");
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}
// A
if (OrderTypeEnum.A_TYPE.getCode().equals(orderBO.getType())) {
orderBO.setPrice(orderBO.getPrice() * 0.9);
if (orderBO.getWeight() > 9) {
throw new RuntimeException(" ");
}
orderBO.setRefundSupport(Boolean.FALSE);
}
// B
else if (OrderTypeEnum.B_TYPE.getCode().equals(orderBO.getType())) {
orderBO.setPrice(orderBO.getPrice() * 0.8);
if (orderBO.getWeight() > 8) {
throw new RuntimeException(" ");
}
orderBO.setRefundSupport(Boolean.TRUE);
}
// C
else if (OrderTypeEnum.C_TYPE.getCode().equals(orderBO.getType())) {
orderBO.setPrice(orderBO.getPrice() * 0.7);
if (orderBO.getWeight() > 7) {
throw new RuntimeException(" ");
}
orderBO.setRefundSupport(Boolean.TRUE);
}
//
OrderDO orderDO = new OrderDO();
BeanUtils.copyProperties(orderBO, orderDO);
orderMapper.insert(orderDO);
}
}
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2.7.1
//
public interface DiscountStrategy {
public void discount(OrderBO orderBO);
}
// A
@Component
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public class TypeADiscountStrategy implements DiscountStrategy {
@Override
public void discount(OrderBO orderBO) {
orderBO.setPrice(orderBO.getPrice() * 0.9);
}
}
// B
@Component
public class TypeBDiscountStrategy implements DiscountStrategy {
@Override
public void discount(OrderBO orderBO) {
orderBO.setPrice(orderBO.getPrice() * 0.8);
}
}
// C
@Component
public class TypeCDiscountStrategy implements DiscountStrategy {
@Override
public void discount(OrderBO orderBO) {
orderBO.setPrice(orderBO.getPrice() * 0.7);
}
}
//
@Component
public class DiscountStrategyFactory implements InitializingBean {
private Map<String, DiscountStrategy> strategyMap = new HashMap<>();
@Resource
private TypeADiscountStrategy typeADiscountStrategy;
@Resource
private TypeBDiscountStrategy typeBDiscountStrategy;
@Resource
private TypeCDiscountStrategy typeCDiscountStrategy;
public DiscountStrategy getStrategy(String type) {
return strategyMap.get(type);
}
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@Override
public void afterPropertiesSet() throws Exception {
strategyMap.put(OrderTypeEnum.A_TYPE.getCode(), typeADiscountStrategy);
strategyMap.put(OrderTypeEnum.B_TYPE.getCode(), typeBDiscountStrategy);
strategyMap.put(OrderTypeEnum.C_TYPE.getCode(), typeCDiscountStrategy);
}
}
//
@Component
public class DiscountStrategyExecutor {
private DiscountStrategyFactory discountStrategyFactory;
public void discount(OrderBO orderBO) {
DiscountStrategy discountStrategy = discountStrategyFactory.getStrategy(orderBO.ge
if (null == discountStrategy) {
throw new RuntimeException(" ");
}
discountStrategy.discount(orderBO);
}
}
2.7.2
//
public interface CreateOrderService {
public void createOrder(OrderBO orderBO);
}
//
public abstract class AbstractCreateOrderFlow {
@Resource
private OrderMapper orderMapper;
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public void createOrder(OrderBO orderBO) {
//
if (null == orderBO) {
throw new RuntimeException("");
}
if (OrderTypeEnum.isNotValid(orderBO.getType())) {
throw new RuntimeException("");
}
//
discount(orderBO);
//
weighing(orderBO);
//
supportRefund(orderBO);
//
OrderDO orderDO = new OrderDO();
BeanUtils.copyProperties(orderBO, orderDO);
orderMapper.insert(orderDO);
}
public abstract void discount(OrderBO orderBO);
public abstract void weighing(OrderBO orderBO);
public abstract void supportRefund(OrderBO orderBO);
}
//
@Service
public class CreateOrderFlow extends AbstractCreateOrderFlow {
@Resource
private DiscountStrategyExecutor discountStrategyExecutor;
@Resource
private ExpressStrategyExecutor expressStrategyExecutor;
@Resource
private RefundStrategyExecutor refundStrategyExecutor;
@Override
16/20
public void discount(OrderBO orderBO) {
discountStrategyExecutor.discount(orderBO);
}
@Override
public void weighing(OrderBO orderBO) {
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public void weighing(OrderBO orderBO) {
expressStrategyExecutor.weighing(orderBO);
}
@Override
public void supportRefund(OrderBO orderBO) {
refundStrategyExecutor.supportRefund(orderBO);
}
}
2.7.3
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Y
https://mp.weixin.qq.com/s/xLpb6gQ_BLoRMs6QbBjCRA 18/20
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3
JAVA
JAVA
java_fro nt
#Java 54
ATAM
https://mp.weixin.qq.com/s/xLpb6gQ_BLoRMs6QbBjCRA 19/20
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()
Pythonlx
Verilog
IC
https://mp.weixin.qq.com/s/xLpb6gQ_BLoRMs6QbBjCRA 20/20
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