spring4全注解web项目demo

记得没接触框架的时候，写demo测试时真的很爽，新建web项目，然后随便写写servlet随便调试

框架越来越多，配置记不得了，整合容易出问题，集成新东西越来越少了，不敢动了。

这是个spring4的全注解的项目，没有任何功能，仅仅是spring+springMVC配置，测试通过

<?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.zhen</groupId>
    <artifactId>Spring4-WebSocket</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>


    <properties>
        <spring.version>4.3.5.RELEASE</spring.version>
    </properties>

    <dependencies>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- 安全起见，添加，这个对任务调度，jml、ftl等提供支持 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!-- jsp和servlet -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
            <scope>provided</scope>
        </dependency>


        <!-- 为@Response等的json数据绑定提供支持 -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.9.6</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.9.6</version>
        </dependency>





    </dependencies>


    <build>
        <plugins>
            <!-- 编译插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.5.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>

            <!-- tomcat 插件 -->
        <plugin>
            <groupId>org.eclipse.jetty</groupId>
            <artifactId>jetty-maven-plugin</artifactId>
            <version>9.3.7.v20160115</version>
            <configuration>
                <httpConnector>
                    <port>8080</port>
                    <host>localhost</host>
                </httpConnector>
                <webApp>
                    <contextPath>/spring4webSocket</contextPath>
                </webApp>
            </configuration>
        </plugin>
        </plugins>
    </build>


</project>

package com.zhen.spring_websocket.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.*;

import java.text.SimpleDateFormat;
import java.util.List;

/**
 * @author zhen
 * @Date 2018/12/10 15:19
 */
@Configuration
@EnableWebMvc //这个注解类似于 <mvc:annotation-driven/>
public class SpringMVCConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addViewControllers(ViewControllerRegistry registry){
        registry.addViewController("/").setViewName("/index");
    }

    @Override
    public void configureViewResolvers(ViewResolverRegistry registry) {
        //spring4 默认不是jsp，而是Thymeleaf
        registry.jsp().prefix("/jsp").suffix(".jsp");
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        //静态资源处理
        registry.addResourceHandler("/static/**").addResourceLocations("/static/");
    }

    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        //增加jackson 的支持，json转换器，支持@RequestBody等
        Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder()
            .dateFormat(new SimpleDateFormat("yyyy-MM-dd"));
        converters.add(new MappingJackson2HttpMessageConverter(builder.build()));
    }
}

package com.zhen.spring_websocket.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;

/**
 * @author zhen
 * @Date 2018/12/10 16:01
 */
@Configuration
@ComponentScan("com.zhen.spring_websocket")
@Import(SpringMVCConfig.class)
public class ProductConfig {

}

package com.zhen.spring_websocket.config;

import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;

/**
 * @author zhen
 * @Date 2018/12/10 15:13
 * servlet 3支持
 */
public class MyWebApplicationInitializer implements WebApplicationInitializer {

    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {

        //Spring
        AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
        ctx.register(ProductConfig.class);
        ctx.setServletContext(servletContext);

        //Spring MVC
        ServletRegistration.Dynamic registration = servletContext.addServlet("servletDispatcher", new DispatcherServlet(ctx));
        registration.setLoadOnStartup(1);
        registration.addMapping("/");
    }
}

基于spring4，servlet 3

package com.zhen.spring_websocket.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

/**
 * @author zhen
 * @Date 2018/12/10 17:32
 */
@Controller
@RequestMapping("/test")
public class TestController {

    @RequestMapping("/do")
    @ResponseBody
    public String test(){
        System.out.println("测试方法执行！");
        return "ok!";
    }
}

项目结构：

参考：

　　spring文档：链接:https://pan.baidu.com/s/1zZj-HtKBKbRKjz7FyiXkUg  提取码: 47gu  ，这个可以从官网下载最新的文档版本

　　https://blog.csdn.net/hcwbr123/article/details/78422120  spring与springmvc的扫描重复问题

　　https://www.cnblogs.com/silfox/p/7659353.html  jsp与servlet包的引入maven

　　https://www.cnblogs.com/csonezp/p/5315725.html 纯注解spring4的demo

　　https://www.cnblogs.com/tibit/p/5400880.html jetty插件配置