1.pom.xml文件配置（酌情修改）
<project xmlns="" xmlns:xsi=""xsi:schemaLocation=" http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.nnk.maven.test</groupId><artifactId>test-sample</artifactId><version>0.0.1-SNAPSHOT</version><packaging>war</packaging><properties><java.version>1.7</java.version><start-class>com.nnk.maven.test.boot.Application</start-class></properties><!– Inherit defaults from Spring Boot –><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.0.1.RELEASE</version></parent><!– Add typical dependencies for a web application –><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency></dependencies><build><pluginManagement><plugins><plugin><artifactId>maven-compiler-plugin</artifactId><configuration><source>1.7</source><target>1.7</target></configuration></plugin></plugins></pluginManagement></build><repositories><repository><id>spring-snapshots</id><url></url><snapshots><enabled>true</enabled></snapshots></repository><repository><id>spring-milestones</id><url></url></repository></repositories><pluginRepositories><pluginRepository><id>spring-snapshots</id><url></url></pluginRepository><pluginRepository><id>spring-milestones</id><url></url></pluginRepository></pluginRepositories></project>
2.实体类Userpackage com.nnk.maven.test.entity;/** * */public class User {private Long id;private String name;public Long getId() {return id;}public void setId(Long id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}@Overridepublic boolean equals(Object o) {if (this == o)return true;if (o == null || getClass() != o.getClass())return false;User user = (User) o;if (id != null ? !id.equals(user.id) : user.id != null)return false;return true;}@Overridepublic int hashCode() {return id != null ? id.hashCode() : 0;}}3.控制器Controllerpackage com.nnk.maven.test.controller;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import com.nnk.maven.test.entity.User;/** * */@RestController@RequestMapping("/user")public class UserController {@RequestMapping("/{id}")public User view(@PathVariable("id") Long id) {User user = new User();user.setId(id);user.setName("zhang");return user;}}4.spring-boot（tomcat启动）package com.nnk.maven.test.boot;import java.util.HashSet;import java.util.Set;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.EnableAutoConfiguration;import org.springframework.context.annotation.ComponentScan;import org.springframework.context.annotation.Configuration;/** * */@Configuration@ComponentScan("com.nnk")@EnableAutoConfiguration// @SpringBootApplicationpublic class Application {public static void main(String[] args) {SpringApplication app = new SpringApplication(Application.class);app.setWebEnvironment(true);app.setShowBanner(false);Set<Object> set = new HashSet<Object>();// set.add("classpath:applicationContext.xml");app.setSources(set);app.run(args);}}注意：网上大部分@CompoentScan没有后面的value，如果不加必须保证所有的程序在一个包中，不然会出现404.
LZ 也是翻了好几个小时才发现是这个问题，所以写了一个比较完整的，避免来人再犯同样的错误！
，心有多大，舞台就有多大。
