数据库调整；microservice-api改为microservice-pojo；创建gateway Module

backend/microservice-pojo/pom.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>epp</artifactId>
+        <groupId>com.cxyxiaomo</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>microservice-pojo</artifactId>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.11</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+</project>

backend/microservice-pojo/src/main/java/com/cxyxiaomo/epp/pojo/User.java

@@ -0,0 +1,22 @@
+package com.cxyxiaomo.epp.pojo;
+
+import lombok.Data;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import lombok.experimental.Accessors;
+
+import java.io.Serializable;
+
+// 数据库关系映射
+
+@Data
+@Getter
+@Setter
+@NoArgsConstructor
+@Accessors(chain = true) // 链式写法
+public class User implements Serializable { // 微服务必须要实现Serializable
+    private Long id;
+    private String username;
+    private String password;
+}