设计模式-建造者模式

Author: dolyw

DesignPattern/pom.xml

@@ -35,6 +35,11 @@
                 </exclusion>
             </exclusions>
         </dependency>
+
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+        </dependency>
     </dependencies>
 
     <build>

DesignPattern/src/main/java/com/design/builder/App.java

@@ -0,0 +1,161 @@
+package com.design.builder;
+
+import java.util.Date;
+
+/**
+ * 应用
+ *
+ * @author wliduo[i@dolyw.com]
+ * @date 2022/2/11 14:13
+ */
+public class App {
+
+    /** 主键ID */
+    private Long appId;
+
+    /** 应用代码 */
+    private String appCode;
+
+    /** 应用名称 */
+    private String appName;
+
+    /** 应用私钥 */
+    private String appSecret;
+
+    /** 应用类型 */
+    private String appType;
+
+    /** 创建人 */
+    private String createdBy;
+
+    /** 创建时间 */
+    private Date createdTime;
+
+    public Long getAppId() {
+        return appId;
+    }
+
+    public void setAppId(Long appId) {
+        this.appId = appId;
+    }
+
+    public String getAppCode() {
+        return appCode;
+    }
+
+    public void setAppCode(String appCode) {
+        this.appCode = appCode;
+    }
+
+    public String getAppName() {
+        return appName;
+    }
+
+    public void setAppName(String appName) {
+        this.appName = appName;
+    }
+
+    public String getAppSecret() {
+        return appSecret;
+    }
+
+    public void setAppSecret(String appSecret) {
+        this.appSecret = appSecret;
+    }
+
+    public String getAppType() {
+        return appType;
+    }
+
+    public void setAppType(String appType) {
+        this.appType = appType;
+    }
+
+    public String getCreatedBy() {
+        return createdBy;
+    }
+
+    public void setCreatedBy(String createdBy) {
+        this.createdBy = createdBy;
+    }
+
+    public Date getCreatedTime() {
+        return createdTime;
+    }
+
+    public void setCreatedTime(Date createdTime) {
+        this.createdTime = createdTime;
+    }
+
+    /**
+     * 建造者模式
+     *
+     * @return
+     */
+    public static Builder Builder() {
+        return new Builder();
+    }
+
+    /**
+     * 建造者模式 - Builder内部类
+     */
+    public static final class Builder {
+        private Long appId;
+        private String appCode;
+        private String appName;
+        private String appSecret;
+        private String appType;
+        private String createdBy;
+        private Date createdTime;
+
+        private Builder() {
+        }
+
+        public Builder withAppId(Long appId) {
+            this.appId = appId;
+            return this;
+        }
+
+        public Builder withAppCode(String appCode) {
+            this.appCode = appCode;
+            return this;
+        }
+
+        public Builder withAppName(String appName) {
+            this.appName = appName;
+            return this;
+        }
+
+        public Builder withAppSecret(String appSecret) {
+            this.appSecret = appSecret;
+            return this;
+        }
+
+        public Builder withAppType(String appType) {
+            this.appType = appType;
+            return this;
+        }
+
+        public Builder withCreatedBy(String createdBy) {
+            this.createdBy = createdBy;
+            return this;
+        }
+
+        public Builder withCreatedTime(Date createdTime) {
+            this.createdTime = createdTime;
+            return this;
+        }
+
+        public App build() {
+            App app = new App();
+            app.setAppId(appId);
+            app.setAppCode(appCode);
+            app.setAppName(appName);
+            app.setAppSecret(appSecret);
+            app.setAppType(appType);
+            app.setCreatedBy(createdBy);
+            app.setCreatedTime(createdTime);
+            return app;
+        }
+    }
+}

DesignPattern/src/main/java/com/design/builder/Channel.java

@@ -0,0 +1,54 @@
+package com.design.builder;
+
+import lombok.Builder;
+import lombok.Data;
+
+import java.util.Date;
+
+/**
+ * 渠道
+ *
+ * @author wliduo[i@dolyw.com]
+ * @date 2022/2/11 14:13
+ */
+@Data
+@Builder
+public class Channel {
+
+    /** 主键ID */
+    private Long channelId;
+
+    /** 渠道代码 */
+    private String channelCode;
+
+    /** 渠道名称 */
+    private String channelName;
+
+    /** 渠道类型 */
+    private Integer channelType;
+
+    /** 渠道状态：1-待审核 2-审核通过 3-合作中 4-暂停合作 5-废弃 */
+    private Integer status;
+
+    /** 渠道生效日期 */
+    private Date effectiveDate;
+
+    /** 渠道失效日期 */
+    private Date invalidDate;
+
+    /** 渠道联系人 */
+    private String channelContactName;
+
+    /** 渠道联系电话 */
+    private String channelContactPhone;
+
+    /** 渠道联系邮箱 */
+    private String channelContactEmail;
+
+    /** 创建人 */
+    private String createdBy;
+
+    /** 创建时间 */
+    private Date createdTime;
+
+}

DesignPattern/src/main/java/com/design/builder/Main.java

@@ -0,0 +1,27 @@
+package com.design.builder;
+
+import java.util.Date;
+
+/**
+ * 建造者模式
+ *
+ * @author wliduo[i@dolyw.com]
+ * @date 2022/2/11 14:27
+ */
+public class Main {
+
+    public static void main(String[] args) {
+        App app = App.Builder()
+                .withAppId(1L)
+                .withAppCode("App")
+                .withAppName("XX系统")
+                .withCreatedBy("XXX")
+                .build();
+        Channel channel = Channel.builder()
+                .channelId(1L)
+                .channelName("XXX")
+                .channelType(1)
+                .createdTime(new Date())
+                .build();
+    }
+}