# 实现 springmvc 简单案例
# 实现 maven 的基本配置
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| <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>
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# 坐标导入
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| <dependencies>
<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>
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# tomcat 的配置
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| <build>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.1</version>
<configuration>
<port>80</port>
<path>/</path>
</configuration>
</plugin>
</plugins>
</build>
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# 创建软件包实现 controller 层
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| package com.ljc.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
//使用@Controller定义bean
@Controller
public class Usercontroller {
//设置当前操作的访问路径
@RequestMapping("/save")
//设置当前操作返回值类型
@ResponseBody
public String save()
{
System.out.println("user模块正在执行。。。。。");
return "{'module':'springmvc'}";
}
}
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在创建配置类 config （ServletContaininitConfig 和 SpringMvcConfig）
# ServletContaininitConfig 类
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| package com.ljc.config;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.support.AbstractDispatcherServletInitializer;
//定义一个servlet容器自动的配置类，在里面加载spring的配置
public class ServletContaininitConfig 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;
}
}
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# SpringMvcConfig
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| package com.ljc.config;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
//创建springmvc的配置文件，加载controller对应的bean
@Configuration
@ComponentScan("com.ljc.controller")
public class SpringMvcConfig {
}
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在黑马上面做的一个简单的案例！！！
