build,config: 调整生产环境配置并新增相关配置

1. 更新生产环境MinIO公网访问地址
2. 新增全局.gitignore忽略规则
3. 添加Spring MVC字符编码与消息转换器配置
4. 修复AppFooter.vue末尾多余空行

server/src/main/java/com/chuanggao/chuanggao/config/WebConfig.java

@@ -0,0 +1,43 @@
+package com.chuanggao.chuanggao.config;
+
+import org.springframework.boot.web.servlet.FilterRegistrationBean;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.converter.HttpMessageConverter;
+import org.springframework.http.converter.StringHttpMessageConverter;
+import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
+import org.springframework.web.filter.CharacterEncodingFilter;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+import java.nio.charset.StandardCharsets;
+import java.util.List;
+
+@Configuration
+public class WebConfig implements WebMvcConfigurer {
+
+    @Bean
+    public FilterRegistrationBean<CharacterEncodingFilter> characterEncodingFilter() {
+        FilterRegistrationBean<CharacterEncodingFilter> filter = new FilterRegistrationBean<>();
+        CharacterEncodingFilter encodingFilter = new CharacterEncodingFilter();
+        encodingFilter.setEncoding("UTF-8");
+        encodingFilter.setForceEncoding(true);
+        filter.setFilter(encodingFilter);
+        filter.addUrlPatterns("/*");
+        filter.setOrder(1);
+        return filter;
+    }
+
+    @Override
+    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
+        // 将 StringHttpMessageConverter 放到首位，用于处理 String 类型返回值
+        converters.add(0, new StringHttpMessageConverter(StandardCharsets.UTF_8));
+
+        // 让 Jackson JSON 响应也带上 charset=utf-8
+        // 默认 MappingJackson2HttpMessageConverter 的 Content-Type 是 application/json 不带 charset
+        for (HttpMessageConverter<?> converter : converters) {
+            if (converter instanceof MappingJackson2HttpMessageConverter jacksonConverter) {
+                jacksonConverter.setDefaultCharset(StandardCharsets.UTF_8);
+            }
+        }
+    }
+}