1. Project Configuration and Dependency Integration

Initilaize the Mavan project structure. The pom.xml file manages all required dependencies for the Spring ecosystem, database connectivity, and JSON handling.

1.1 Maven Dependencies (pom.xml)

Configure version properteis and import necessary libraries including JUnit, MyBatis, Druid connection pool, and Jackson for JSON serialization.

<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">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.example.ssm</groupId>
    <artifactId>user-management-app</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>
    
    <properties>
        <spring.version>4.1.3.RELEASE</spring.version>
        <mybatis.version>3.2.8</mybatis.version>
        <mysql.version>5.1.32</mysql.version>
        <druid.version>1.0.9</druid.version>
        <jackson.version>2.4.2</jackson.version>
    </properties>

    <dependencies>
        <!-- Spring Core -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        
        <!-- MyBatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.2.2</version>
        </dependency>

        <!-- Database Connectivity -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>${druid.version}</version>
        </dependency>
        
        <!-- Utilities -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>${jackson.version}</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
    
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.2</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

1.2 Data Source Configuration (jdbc.properties)

Externalize database credentials to avoid hardcoding sensitive information in Java classes.

db.driverClassName=com.mysql.jdbc.Driver
db.url=jdbc:mysql://localhost:3306/demo_db?useSSL=false
db.username=root
db.password=secret_password