面向接口编程

Author: enjoyCoding666

src/main/java/demo/invoice/Invoice.java

@@ -21,7 +21,7 @@ public class Invoice {
 	private BigDecimal totalAmount;
 
 	/**
-	 * 火车票的专属字段，这个是否要抽到另一个对象里面?
+	 * 火车票的专属字段
 	 */
 	private String trainNum;
 	private String passengerName;

src/main/java/demo/invoice/InvoiceTest.java renamed to src/main/java/demo/invoice/InvoicePatternTest.java

@@ -3,9 +3,9 @@
 /**
  *
  */
-public class InvoiceTest {
+public class InvoicePatternTest {
 	public static void main(String[] args) {
-		int invoiceType=8;
+		int invoiceType=9;
 		updateInvoice(invoiceType);
 
 	}
@@ -18,10 +18,11 @@ public static void updateInvoice(int invoiceType){
 			 invoiceService=new InvoiceServiceAir();
 		}else if(invoiceType==9){
 			 invoiceService=new InvoiceServiceTrain();
+		}else {
+			invoiceService=new InvoiceServiceOther();
 		}
 		invoiceService.updateInvoice();
 
-
 	}
 
 }

src/main/java/demo/invoice/InvoiceService.java

@@ -2,11 +2,10 @@
 
 public interface InvoiceService {
 
-	Invoice queryInvoice();
+	Invoice queryInvoice(String invoiceNo,String invoiceCode);
 
 	int saveInvoice();
 
 	int updateInvoice();
 
-	int insertInvoice();
 }

src/main/java/demo/invoice/InvoiceServiceAir.java

@@ -2,23 +2,23 @@
 
 public class InvoiceServiceAir implements InvoiceService{
 
+
 	@Override
-	public Invoice queryInvoice() {
+	public Invoice queryInvoice(String invoiceNo, String invoiceCode) {
+		System.out.println("查询飞机票");
 		return null;
 	}
 
 	@Override
 	public int saveInvoice() {
+		System.out.println("保存飞机票");
 		return 0;
 	}
 
 	@Override
 	public int updateInvoice() {
+		System.out.println("更新飞机票");
 		return 0;
 	}
 
-	@Override
-	public int insertInvoice() {
-		return 0;
-	}
 }

src/main/java/demo/invoice/InvoiceServiceOther.java

@@ -0,0 +1,22 @@
+package demo.invoice;
+
+public class InvoiceServiceOther implements InvoiceService {
+	@Override
+	public Invoice queryInvoice(String invoiceNo, String invoiceCode) {
+		System.out.println("查询其他发票");
+		return null;
+	}
+
+	@Override
+	public int saveInvoice() {
+		System.out.println("保存其他发票");
+		return 0;
+	}
+
+	@Override
+	public int updateInvoice() {
+		System.out.println("更新其他发票");
+		return 0;
+	}
+
+}

src/main/java/demo/invoice/InvoiceServiceTrain.java

@@ -2,22 +2,21 @@
 
 public class InvoiceServiceTrain implements InvoiceService {
 	@Override
-	public Invoice queryInvoice() {
+	public Invoice queryInvoice(String invoiceNo, String invoiceCode) {
+		System.out.println("查询火车票");
 		return null;
 	}
 
 	@Override
 	public int saveInvoice() {
+		System.out.println("保存火车票");
 		return 0;
 	}
 
 	@Override
 	public int updateInvoice() {
+		System.out.println("更新火车票");
 		return 0;
 	}
 
-	@Override
-	public int insertInvoice() {
-		return 0;
-	}
 }