?今天嘗試使用visio畫了一個序列圖。

話不多說，先打開visio，新建一個UML序列。

先新建幾個對象生命線

加入幾個激活

而后是消息，實線表示請求，虛線表示響應。

當然如果不影響理解，可以不用每個請求都配上一個響應。

此UML例子是在《UML精粹：標準對象建模語言簡明指南》中拿過來的，為了更好的理解這個UML，下面使用java來實現此UML。

procuct

packagecom.simon.uml.sequenceDiagram;

/**

*CreatedbyIntelliJIDEA.

*

*@author:Simon

*@date:2019-05-09

*@time:14:50

*@description:產品

*/

publicclassProduct{

privateStringname;

privatedoubleprice;

publicStringgetName(){

returnname;

}

publicvoidsetName(Stringname){

this.name=name;

}

publicdoublegetPrice(){

returnprice;

}

publicdoublegetPrice(intnumber){

doubleorderLinePrice=price*number;

System.out.println("productname:"+getName()

+"\tprice:"+getPrice()

+"\tnumber:"+number

+"\torderlineprice:"+orderLinePrice

);

returnorderLinePrice;

}

publicvoidsetPrice(doubleprice){

this.price=price;

}

}

customer

packagecom.simon.uml.sequenceDiagram;

/**

*CreatedbyIntelliJIDEA.

*

*@author:Simon

*@date:2019-05-09

*@time:14:51

*@description:客戶

*/

publicclassCustomer{

privatedoublediscount;

publicdoublegetDiscountedValue(Orderorder){

returndiscount*order.getBaseValue();

}

publicdoublegetDiscount(){

returndiscount;

}

publicvoidsetDiscount(doublediscount){

this.discount=discount;

}

}

order

packagecom.simon.uml.sequenceDiagram;

importjava.util.List;

/**

*CreatedbyIntelliJIDEA.

*

*@author:Simon

*@date:2019-05-09

*@time:14:50

*@description:訂單

*/

publicclassOrder{

privatedoublebaseValue;

privateCustomercustomer;

privateListorderLineList;

publicdoublecalculatePrice(){

doublesumOrderLinePrice=0;

for(OrderLineorderLine:orderLineList){

doubleorderLinePrice=orderLine.calculatePrice();

sumOrderLinePrice+=orderLinePrice;

}

this.setBaseValue(sumOrderLinePrice);

System.out.println("orderbaseprice:"+sumOrderLinePrice);

doublediscountedValue=getCustomer().getDiscountedValue(this);

System.out.println("orderdiscountedprice:"+discountedValue);

returndiscountedValue;

}

publicdoublegetBaseValue(){

returnbaseValue;

}

publicvoidsetBaseValue(doublebaseValue){

this.baseValue=baseValue;

}

publicListgetOrderLineList(){

returnorderLineList;

}

publicvoidsetOrderLineList(ListorderLineList){

this.orderLineList=orderLineList;

}

publicCustomergetCustomer(){

returncustomer;

}

publicvoidsetCustomer(Customercustomer){

this.customer=customer;

}

}

orderline

packagecom.simon.uml.sequenceDiagram;

/**

*CreatedbyIntelliJIDEA.

*

*@author:Simon

*@date:2019-05-09

*@time:14:50

*@description:訂單明細

*/

publicclassOrderLine{

privateintnumber;

privateProductproduct;

publicOrderLine(intnumber,Productproduct){

this.number=number;

this.product=product;

}

publicdoublecalculatePrice(){

returnproduct.getPrice(number);

}

publicintgetNumber(){

returnnumber;

}

publicvoidsetNumber(intnumber){

this.number=number;

}

publicProductgetProduct(){

returnproduct;

}

publicvoidsetProduct(Productproduct){

this.product=product;

}

}

order的測試用例

packagecom.simon.uml.sequenceDiagram;

importorg.junit.Assert;

importjava.util.ArrayList;

importjava.util.List;

/**

*CreatedbyIntelliJIDEA.

*

*@author:Simon

*@date:2019-05-09

*@time:15:23

*@description:

*/

publicclassOrderTest{

@org.junit.Test

publicvoidcalculatePrice(){

//這個商品是鞋子,123塊錢一雙

ProductproductShoes=newProduct();

productShoes.setName("shoes");

productShoes.setPrice(123);

//這個商品是襪子,8塊錢一雙

ProductproductSocket=newProduct();

productSocket.setName("socket");

productSocket.setPrice(8);

//這是一個老客戶，打七折

Customercustomer=newCustomer();

customer.setDiscount(0.7);

//這個客戶下了一個單

Orderorder=newOrder();

order.setCustomer(customer);

//買了一雙鞋子，兩雙襪子

OrderLineorderLineShoes=newOrderLine(1,productShoes);

OrderLineorderLineSocket=newOrderLine(2,productSocket);

ListorderLineList=newArrayList();

orderLineList.add(orderLineShoes);

orderLineList.add(orderLineSocket);

order.setOrderLineList(orderLineList);

//算一算總共多少錢

doublepriceActual=order.calculatePrice();

Assert.assertEquals("97.3",String.valueOf(priceActual));

}

}

測試用例的輸出

productname:shoesprice:123.0number:1orderlineprice:123.0

productname:socketprice:8.0number:2orderlineprice:16.0

orderbaseprice:139.0

orderdiscountedprice:97.3