Spring MVC 基本配置步骤总结

news2024/9/24 20:15:47

1.简介

本文记录Spring MVC基本项目拉起配置步骤。

2.步骤

在pom.xml中导入依赖：

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>6.0.6</version>
        <scope>compile</scope>
    </dependency>
    <dependency>
        <groupId>jakarta.platform</groupId>
        <artifactId>jakarta.jakartaee-web-api</artifactId>
        <version>9.1.0</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>6.0.6</version>
    </dependency>
    <dependency>
        <groupId>org.eclipse</groupId>
        <artifactId>yasson</artifactId>
        <version>3.0.0</version>
    </dependency>

添加配置类：

@Configuration
@ComponentScan("com.jojo.controller")
public class MvcConfig {
    @Bean
    public RequestMappingHandlerMapping handlerMapping() {
        return new RequestMappingHandlerMapping();//加入ioc
    }

    @Bean
    public RequestMappingHandlerAdapter handlerAdapter() {
        return new RequestMappingHandlerAdapter();//加入ioc
    }

}

添加初始化类：

public class SpringMvcInit extends AbstractAnnotationConfigDispatcherServletInitializer {
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[0];
    }

    //设置项目的配置类
    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[]{MvcConfig.class};
    }

    //配置springmvc内部自动serverlet的访问地址
    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }
}

添加业务类:

@Controller
//@RequestMapping("/user")表示类下所有方法路径都加/user前缀
public class TestController {


    @RequestMapping("test")//对外访问地址为/test，//其中如有*代表一层通配符，**代表多层通配符
   	//@RequestMapping(value = "test", method = {RequestMethod.GET,RequestMethod.POST}),另一种写法，并指定请求类型
	//@PostMapping=@RequestMapping+RequestMethod.POST
	//@GetMapping=@RequestMapping+RequestMethod.GET
	//@PutMapping=@RequestMapping+RequestMethod.PUT
	//@DeleteMapping=@RequestMapping+RequestMethod.DELETE
    @ResponseBody //直接返回字符串给前端。
    public String Test(){
        System.out.println("good");

        return "good!";
    }
}