今天尝试使用visio画了一个序列图。

话不多说，先打开visio，新建一个UML序列。

先新建几个对象生命线

加入几个激活

而后是消息，实线表示请求，虚线表示响应。

当然如果不影响理解，可以不用每个请求都配上一个响应。

此UML例子是在《UML精粹：标准对象建模语言简明指南》中拿过来的，为了更好的理解这个UML，下面使用java来实现此UML。

procuct

packagecom.simon.uml.sequenceDiagram;

/**

*CreatedbyIntelliJIDEA.

*

*@author:Simon

*@date:2019-05-09

*@time:14:50

*@description:产品

*/

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:客户

*/

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:订单

*/

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:订单明细

*/

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的测试用例

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(){

//这个商品是鞋子,123块钱一双

ProductproductShoes=newProduct();

productShoes.setName("shoes");

productShoes.setPrice(123);

//这个商品是袜子,8块钱一双

ProductproductSocket=newProduct();

productSocket.setName("socket");

productSocket.setPrice(8);

//这是一个老客户，打七折

Customercustomer=newCustomer();

customer.setDiscount(0.7);

//这个客户下了一个单

Orderorder=newOrder();

order.setCustomer(customer);

//买了一双鞋子，两双袜子

OrderLineorderLineShoes=newOrderLine(1,productShoes);

OrderLineorderLineSocket=newOrderLine(2,productSocket);

ListorderLineList=newArrayList();

orderLineList.add(orderLineShoes);

orderLineList.add(orderLineSocket);

order.setOrderLineList(orderLineList);

//算一算总共多少钱

doublepriceActual=order.calculatePrice();

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

}

}

测试用例的输出

productname:shoesprice:123.0number:1orderlineprice:123.0

productname:socketprice:8.0number:2orderlineprice:16.0

orderbaseprice:139.0

orderdiscountedprice:97.3