SpringCloud服务提供者User（一）

新建maven(或者直接新建springboot)项目，这里用springboot版本为1.5，然后添加web、mysql、mybatis等相关依赖，接着添加SpringCloud依赖，properties文件进行配置，编写实体类、Mapper、Controller，然后进行测试

新建maven(springboot)项目：

选择基于SpringBoot1.5的版本，并添加Web、MySQL、MyBatis相关依赖

点击finsh完成，然后建立目录com.lyl.cloud.entity、com.lyl.cloud.mapper、com.lyl.cloud.controller等大致项目结构如下

我们对pom进行配置，添加SpringCloud的依赖

pom.xml

<?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>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.5.19.BUILD-SNAPSHOT</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.lyl.cloud</groupId>
	<artifactId>provider-user</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>provider-user</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
	</properties>

<!-- web、mybatis与mysql的依赖文件 -->
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.mybatis.spring.boot</groupId>
			<artifactId>mybatis-spring-boot-starter</artifactId>
			<version>1.3.2</version>
		</dependency>

		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

<!-- springcloud的依赖 -->
	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>Finchley.M7</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>
	
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

	<repositories>
		<repository>
			<id>spring-snapshots</id>
			<name>Spring Snapshots</name>
			<url>https://repo.spring.io/snapshot</url>
			<snapshots>
				<enabled>true</enabled>
			</snapshots>
		</repository>
		<repository>
			<id>spring-milestones</id>
			<name>Spring Milestones</name>
			<url>https://repo.spring.io/milestone</url>
		</repository>
	</repositories>
	<pluginRepositories>
		<pluginRepository>
			<id>spring-snapshots</id>
			<name>Spring Snapshots</name>
			<url>https://repo.spring.io/snapshot</url>
			<snapshots>
				<enabled>true</enabled>
			</snapshots>
		</pluginRepository>
		<pluginRepository>
			<id>spring-milestones</id>
			<name>Spring Milestones</name>
			<url>https://repo.spring.io/milestone</url>
		</pluginRepository>
	</pluginRepositories>

</project>

application.properties

#mybatis扫描路径
mybatis.type-aliases-package=com.lyl.cloud.entity

#mysql连接配置
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/cloud?useUnicode=true&characterEncoding=UTF-8&useSSL=false
spring.datasource.username=root
spring.datasource.password=root

#springMVC配置
spring.mvc.view.prefix=classpath:/templates/*
	
#配置端口
server.port=8000

User.java

package com.lyl.cloud.entity;

import java.math.BigDecimal;

public class User {

	private Long id;
	private String username;
	private String name;
	private Integer age;
	private BigDecimal banlance;

	public Long getId() {
		return id;
	}

	public void setId(Long id) {
		this.id = id;
	}

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public Integer getAge() {
		return age;
	}

	public void setAge(Integer age) {
		this.age = age;
	}

	public BigDecimal getBanlance() {
		return banlance;
	}

	public void setBanlance(BigDecimal banlance) {
		this.banlance = banlance;
	}

	@Override
	public String toString() {
		return "User [id=" + id + ", username=" + username + ", name=" + name + ", age=" + age + ", banlance="
				+ banlance + "]";
	}

}

UserMapper.java

package com.lyl.cloud.mapper;

import java.util.List;

import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Component;

import com.lyl.cloud.entity.User;

@Mapper
@Component("UserMapper")
public interface UserMapper {

	@Select("select * from user where id = #{id}")
	public List<User> findId(@Param(value="id") Long id);
	
}

UserController.java

package com.lyl.cloud.controller;

import java.util.List;

import org.apache.ibatis.annotations.Param;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.lyl.cloud.entity.User;
import com.lyl.cloud.mapper.UserMapper;

@Controller
public class UserController {

	@Autowired
	private UserMapper userMapper;
	
	@RequestMapping("/{id}")
	@ResponseBody
	public User findById(@PathVariable Long id) {
		List<User> userlist = this.userMapper.findId(id);
		User user = userlist.get(0);
		return user;
	}
	
}

启动类ProviderUserApplication.java

package com.lyl.cloud;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@MapperScan("com.lyl.cloud.mapper.*")
public class ProviderUserApplication {

	public static void main(String[] args) {
		SpringApplication.run(ProviderUserApplication.class, args);
	}

}

数据库配置

mysql新建是一个数据库取名cloud，

相应表结构并新增三条数据

我们启动项目可以看到8000端口已开

打开浏览器输入localhost：8000/1，查询id为1的用户

SpringCloud服务提供者User（一）

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