Spring cloud服务的提供者建立

1.0我们要在这里要建立一个服务的提供者模块，是一个module，类似于服务的公共模块

第一步：添加架包

<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>com.java.springcloud</groupId>
    <artifactId>microservice</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>microservice-student-provider-1001</artifactId>

  <dependencies>

      <dependency>
          <groupId>com.java.springcloud</groupId>
          <artifactId>microservice-common</artifactId>
         <version>${project.version}</version>
      </dependency>

      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
    </dependency>
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
    </dependency>
    <!-- 修改后立即生效，热部署 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>springloaded</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
    </dependency>
  </dependencies>

</project>

　　

第二步：添加配置文件application.yml

server:
  port: 1001
  context-path: /

# 数据源配置
spring:
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/db_springcloud?serverTimezone=UTC
    username: root
    password: 123456
  jpa:
    hibernate:
      ddl-auto: update
    show-sql: true

　第三步：编写代码：

　数据层　　　　

package com.java.repository;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;

import com.java.entity.Student;

/**
 * 学生的reponsitoty
* @author nidegui
* @version 2019年5月9日 下午4:16:13
*
*/

public interface StudentRepository extends JpaRepository<Student, Integer>,JpaSpecificationExecutor<Student>{

}

　　服务层:

package com.java.service;
/**
* @author nidegui
* @version 2019年5月9日 下午4:18:41
*
*/

import java.util.List;

import com.java.entity.Student;

/**
 * 学生信息Service接口
 * @author Administrator
 *
 */
public interface StudentService {

    /**
     * 添加或者修改学生信息
     * @param student
     */
    public void save(Student student);

    /**
     * 根据id查找学生信息
     * @param id
     * @return
     */
    public Student findById(Integer id);

    /**
     * 查询学生信息
     * @return
     */
    public List<Student> list();

    /**
     * 根据id删除学生信息
     * @param id
     */
    public void delete(Integer id);

}

　　

package com.java.service.impl;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import com.java.entity.Student;
import com.java.repository.StudentRepository;
import com.java.service.StudentService;

/**
 * 学生信息Service实现类
 * @author
 *
 */
@Service("studentService")
public class StudentServiceImpl implements StudentService{

    @Resource
    private StudentRepository studentRepository;

    @Override
    public void save(Student student) {
        studentRepository.save(student);
    }

    @Override
    public Student findById(Integer id) {
        return studentRepository.findOne(id);
    }

    @Override
    public List<Student> list() {
        return studentRepository.findAll();
    }

    @Override
    public void delete(Integer id) {
        studentRepository.delete(id);
    }

}

　　控制层：

package com.java.controller;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.java.entity.Student;
import com.java.service.StudentService;

/**
 *
 * @author Administrator
 *
 */
@RestController
@RequestMapping("/student")
public class StudentProviderController {

    @Resource
    private StudentService studentService;

   /**
    *
    * @param student
    * @return
    */
    @PostMapping(value="/save")
    public boolean save(@RequestBody Student student){
        try{
            studentService.save(student);
            return true;
        }catch(Exception e){
            return false;
        }
    }

    /**
     *
     * @return
     */
    @GetMapping(value="/list")
    public List<Student> list(){
        return studentService.list();
    }

    /**
     *
     * @param id
     * @return
     */
    @GetMapping(value="/get/{id}")
    public Student get(@PathVariable("id") Integer id){
        return studentService.findById(id);
    }

    /**
     *
     * @param id
     * @return
     */
    @GetMapping(value="/delete/{id}")
    public boolean delete(@PathVariable("id") Integer id){
        try{
            studentService.delete(id);
            return true;
        }catch(Exception e){
            return false;
        }
    }
}