SpringBoot 与 Web开发

Posted 2020-11-11 思考与践行

1. SpringBoot 静态资源映射规则

• webjars:以JAR包的方式引入静态资源;
• 所有/webjars/**,都去classpath:/META-INF/resources/webjars/目录下加载资源;
• /**访问当前项目的任何资源(即静态资源文件夹)
  • classpath:/META-INF/resources/
  • classpath:/resources/,
  • classpath:/static/,
  • classpath:/public/,
  • /:当前项目的根路径

// WebMvcAutoConfiguration.java
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
    if (!this.resourceProperties.isAddMappings()) {
        logger.debug("Default resource handling disabled");
        return;
    }
    Integer cachePeriod = this.resourceProperties.getCachePeriod();
    if (!registry.hasMappingForPattern("/webjars/**")) {
        customizeResourceHandlerRegistration(registry
                .addResourceHandler("/webjars/**")
                .addResourceLocations("classpath:/META-INF/resources/webjars/")
                .setCachePeriod(cachePeriod));
    }
    String staticPathPattern = this.mvcProperties.getStaticPathPattern();
    if (!registry.hasMappingForPattern(staticPathPattern)) {
        customizeResourceHandlerRegistration(
                registry.addResourceHandler(staticPathPattern)
                        .addResourceLocations(
                                this.resourceProperties.getStaticLocations())
                        .setCachePeriod(cachePeriod));
    }
}

2. Thymeleaf 模板引擎

• SpringBoot 引入 Thymeleaf 模板引擎

// pom.xml

<properties>
    <!-- 切换 thymeleaf 版本 --
    <thymeleaf.version>3.0.9.RELEASE</thymeleaf.version>
    <thymeleaf-layout-dialect.version>2.1.1</thymeleaf-layout-dialect.version>
</properties>

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>


// classpath:/templates/, 存放html页面
success.html

// 编写Controller
@RequestMapping("/success")
public String success(){
    return "success";
}

参考资料:

• Spring Boot 全集