1、使用的是eclipse
2、本次創建的是client端，server是已存在的

• 首先新創建一個Spring Starter Project
  

• 填寫項目基本信息
  

• 選取項目需要的依賴（后期也可以在pom.xml中補充），選擇后，點擊finish
  

• 這是項目創建后，中間有些包是我自己創建的，可以按照需要補充

• 這是application.properties

spring.datasource.url=jdbc:mysql://localhost:3306/springcloud?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone = GMT&useAffectedRows=true&allowPublicKeyRetrieval=true spring.datasource.username=root spring.datasource.password=root spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver mybatis.configuration.map-underscore-to-camel-case=true#設置SpringCloud spring.application.name=system-springclouddemoserver.port=10090#使用ip地址向eureka注冊中心注冊 eureka.instance.prefer-ip-address=true eureka.instance.instance-id=${spring.application.name}:${spring.cloud.client.ip-address}:${spring.application.instance_id:${server.port}} eureka.client.service-url.defaultZone=http://**********/eureka/mybatis.type-aliases-package=com.****.zgy.entityspring.freemarker.suffix=.html spring.freemarker.template-loader-path=classpath:/templates/

• 下面是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 https://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>2.4.1</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.*****.zgy</groupId><artifactId>system-springclouddemo1</artifactId><version>${project.release.version}</version><name>system-springclouddemo1</name><description>Demo project for Spring Boot</description><!-- 指定了依賴的版本信息 --><properties><project.release.version>1.0.0-SNAPSHOT</project.release.version><java.version>8</java.version><spring-cloud.version>2020.0.0</spring-cloud.version></properties><!-- 多環境配置 --><profiles><profile><id>dev</id></profile><profile><id>prod</id><properties><project.release.version>1.0.0</project.release.version></properties></profile></profiles><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-jdbc</artifactId></dependency><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>2.1.4</version></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-config</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-client</artifactId></dependency><!-- 可以使用@entity等注解 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-jpa</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-devtools</artifactId><scope>runtime</scope><optional>true</optional></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><scope>runtime</scope></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><!-- 為pojo類提供持久化 --><dependency><groupId>javax.persistence</groupId><artifactId>persistence-api</artifactId><version>1.0.2</version></dependency><!--訪問靜態資源--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-thymeleaf</artifactId></dependency></dependencies><dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><configuration><excludes><exclude><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></exclude></excludes></configuration></plugin></plugins></build><repositories><repository><id>spring-milestones</id><name>Spring Milestones</name><url>https://repo.spring.io/milestone</url></repository></repositories></project>

• 啟動類

package com.*****.zgy;import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.annotation.ComponentScan;@SpringBootApplication @ComponentScan("com.*****.zgy.controller,com.*****.zgy.dao,com.*****.zgy.entity,com.*****.zgy.service") public class SystemSpringclouddemo1Application {public static void main(String[] args) {SpringApplication.run(SystemSpringclouddemo1Application.class, args);}}

• controller

package com.***.zgy.controller;import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.servlet.ModelAndView;import com.***.zgy.entity.Product; import com.***.zgy.service.ProductService;@RestController @RequestMapping("/Product") public class SearchProductController {@Autowiredprivate ProductService productService;@RequestMapping("/")public ModelAndView goHome() {System.out.println("get OK");return new ModelAndView("index");}@RequestMapping(value = "/SearchProduct/{id}", method = RequestMethod.GET,produces = "application/json;charset=utf-8")public Product SearchProductById(@PathVariable Integer id) {Product product = productService.SearchProductById(id);return product;}}

• dao

package com.***.zgy.dao;import org.apache.ibatis.annotations.Mapper;import com.***.zgy.entity.Product;@Mapper public interface ProductMapper {Product SearchProductById(Integer id); } <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.***.zgy.dao.ProductMapper"><select id="SearchProductById" parameterType="int" resultType="com.***.zgy.entity.Product">select * from tb_product where id = #{ID}</select> </mapper>

• entity實體類

package com.***.zgy.entity;import javax.persistence.Entity; import javax.persistence.Id;import lombok.Data;@Entity @Data public class Product {@Idprivate Integer ID;private String productName;private Integer status;private Double price;private String productDesc;private String caption;private Integer inventory; }

• service

package com.***.zgy.service;import org.springframework.stereotype.Service;import com.***.zgy.entity.Product;@Service public interface ProductService {Product SearchProductById(Integer id);} package com.***.zgy.service;import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service;import com.***.zgy.dao.ProductMapper; import com.***.zgy.entity.Product;@Service public class ProductServiceImpl implements ProductService {@Autowiredprivate ProductMapper productMapper;@Overridepublic Product SearchProductById(Integer id) {// TODO Auto-generated method stubProduct product = productMapper.SearchProductById(id);return product;}}

至此結束。如有不妥，還望指正。謝謝^ _ ^

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