SpringMVC学习笔记一-CSDN博客

本文链接：https://blog.csdn.net/qq_28710983/article/details/131934849

1、创建项目

选择Maven
选择 web-app

2、初始化项目文件

3、添加pom坐标

<?xml version="1.0" encoding="UTF-8"?>

<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.itheima</groupId>
  <artifactId>springmvc_01_quickstart</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>



    <!--   这里改成1.8-->
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

  <dependencies>
<!--    1. 导入坐标springmvc与servlet-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.2.10.RELEASE</version>
    </dependency>

  </dependencies>

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.tomcat.maven</groupId>
        <artifactId>tomcat7-maven-plugin</artifactId>
        <version>2.1</version>
        <configuration>
          <port>88</port>
          <path>/</path>
        </configuration>
      </plugin>
    </plugins>
  </build>

</project>

javax.servlet-api 和 spring-web 是springmvc依赖的坐标
build中tomcat7-maven-plugin 是调试运行的插件

4、设置MAVEN调试

Command line 设置为 tomcat7:run

5、SpringMvcConfig配置类

@Configuration
@ComponentScan("com.itheima.controller")
public class SpringMvcConfig {
}

6、ServletContainersInitConfig配置类

//4. 定义一个servlet容器启动的配置类，在里面加载spring的配置
public class ServletContainersInitConfig extends AbstractDispatcherServletInitializer {

    // 加载springMVC容器配置
    @Override
    protected WebApplicationContext createServletApplicationContext() {
        AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
        ctx.register(SpringMvcConfig.class);
        return ctx;
    }

    // 设置哪些请求归属springMVC处理
    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }

    // 加载spring容器配置
    @Override
    protected WebApplicationContext createRootApplicationContext() {
        return null;
    }
}

7、定义Bean

//2. 定义controller
//2.1 使用@Controller 定义bean
@Controller
public class UserController {
    //2.2 设置当前操作的访问路径
    @RequestMapping("/save")
    //2.3 设置当前操作的返回值类型
    @ResponseBody
    public String save(){
        System.out.println("user save ...");
        return "{'module':'springmvc'}";
    }
}