feat(core): 初始化支付系统核心配置与启动模块

- 添加Druid主从数据源配置属性类
- 创建支付系统主启动类MtkjpayApplication
- 配置mt-startup模块pom.xml引入必要依赖
- 添加RestClient配置类用于HTTP请求
- 创建统一响应结果类Result及响应码枚举
- 实现美观的系统启动成功/失败日志输出
- 配置Lombok注解处理器支持

mt-pay/src/main/java/com/mtkj/mtpay/common/Result.java

@@ -0,0 +1,106 @@
+package com.mtkj.mtpay.common;
+
+import lombok.Data;
+
+import java.io.Serializable;
+
+/**
+ * 统一响应结果类
+ */
+@Data
+public class Result<T> implements Serializable {
+    
+    private static final long serialVersionUID = 1L;
+    
+    /**
+     * 响应码
+     */
+    private String code;
+    
+    /**
+     * 响应消息
+     */
+    private String message;
+    
+    /**
+     * 响应数据
+     */
+    private T data;
+    
+    /**
+     * 时间戳
+     */
+    private Long timestamp;
+    
+    public Result() {
+        this.timestamp = System.currentTimeMillis();
+    }
+    
+    public Result(String code, String message) {
+        this();
+        this.code = code;
+        this.message = message;
+    }
+    
+    public Result(String code, String message, T data) {
+        this(code, message);
+        this.data = data;
+    }
+    
+    /**
+     * 成功响应
+     */
+    public static <T> Result<T> success() {
+        return new Result<>(ResultCode.SUCCESS.getCode(), ResultCode.SUCCESS.getMessage());
+    }
+    
+    /**
+     * 成功响应（带数据）
+     */
+    public static <T> Result<T> success(T data) {
+        return new Result<>(ResultCode.SUCCESS.getCode(), ResultCode.SUCCESS.getMessage(), data);
+    }
+    
+    /**
+     * 成功响应（自定义消息）
+     */
+    public static <T> Result<T> success(String message) {
+        return new Result<>(ResultCode.SUCCESS.getCode(), message);
+    }
+    
+    /**
+     * 成功响应（自定义消息和数据）
+     */
+    public static <T> Result<T> success(String message, T data) {
+        return new Result<>(ResultCode.SUCCESS.getCode(), message, data);
+    }
+    
+    /**
+     * 失败响应
+     */
+    public static <T> Result<T> fail() {
+        return new Result<>(ResultCode.FAIL.getCode(), ResultCode.FAIL.getMessage());
+    }
+    
+    /**
+     * 失败响应（自定义消息）
+     */
+    public static <T> Result<T> fail(String message) {
+        return new Result<>(ResultCode.FAIL.getCode(), message);
+    }
+    
+    /**
+     * 失败响应（自定义码和消息）
+     */
+    public static <T> Result<T> fail(String code, String message) {
+        return new Result<>(code, message);
+    }
+    
+    /**
+     * 失败响应（使用ResultCode）
+     */
+    public static <T> Result<T> fail(ResultCode resultCode) {
+        return new Result<>(resultCode.getCode(), resultCode.getMessage());
+    }
+}
+

mt-pay/src/main/java/com/mtkj/mtpay/config/DruidMasterProperties.java

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+package com.mtkj.mtpay.config;
+
+import lombok.Data;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * Druid主数据源配置属性
+ */
+@Data
+@ConfigurationProperties(prefix = "spring.datasource.druid.master")
+public class DruidMasterProperties {
+    private String url;
+    private String username;
+    private String password;
+    private Integer initialSize;
+    private Integer minIdle;
+    private Integer maxActive;
+    private Long maxWait;
+    private Integer connectTimeout;
+    private Integer socketTimeout;
+    private Long timeBetweenEvictionRunsMillis;
+    private Long minEvictableIdleTimeMillis;
+    private Long maxEvictableIdleTimeMillis;
+    private String validationQuery;
+    private Boolean testWhileIdle;
+    private Boolean testOnBorrow;
+    private Boolean testOnReturn;
+}
+

mt-pay/src/main/java/com/mtkj/mtpay/config/DruidSlaveProperties.java

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+package com.mtkj.mtpay.config;
+
+import lombok.Data;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * Druid从数据源配置属性
+ */
+@Data
+@ConfigurationProperties(prefix = "spring.datasource.druid.slave")
+public class DruidSlaveProperties {
+    private String url;
+    private String username;
+    private String password;
+    private Integer initialSize;
+    private Integer minIdle;
+    private Integer maxActive;
+    private Long maxWait;
+    private Integer connectTimeout;
+    private Integer socketTimeout;
+    private Long timeBetweenEvictionRunsMillis;
+    private Long minEvictableIdleTimeMillis;
+    private Long maxEvictableIdleTimeMillis;
+    private String validationQuery;
+    private Boolean testWhileIdle;
+    private Boolean testOnBorrow;
+    private Boolean testOnReturn;
+}
+

mt-pay/src/main/java/com/mtkj/mtpay/config/RestClientConfig.java

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+package com.mtkj.mtpay.config;
+
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
+import org.springframework.web.client.RestClient;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+/**
+ * RestClient配置
+ */
+@Slf4j
+@Configuration
+public class RestClientConfig {
+    
+    @Bean
+    public RestClient restClient(ObjectMapper objectMapper) {
+        log.info("初始化RestClient，配置JSON消息转换器");
+        RestClient restClient = RestClient.builder()
+            .messageConverters(converters -> {
+                MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
+                converter.setObjectMapper(objectMapper);
+                converters.add(converter);
+            })
+            .build();
+        log.info("RestClient配置完成");
+        return restClient;
+    }
+}
+