SpringCloud入门

标签：new   data   数据   image   host   均衡   integer   void   creat   

一。首先创建一个服务提供者

实体类：

package com.dsjg.user.pojo;

import lombok.Data;
import tk.mybatis.mapper.annotation.KeySql;

import javax.persistence.Id;
import javax.persistence.Table;
import java.util.Date;

@Data
@Table(name = "tb_user")
public class User{
    // id
    @Id
    //开启主键自动回填
    @KeySql(useGeneratedKeys = true)
    private Long id;

    // 用户名
    private String userName;

    // 密码
    private String password;

    // 姓名
    private String name;

    // 年龄
    private Integer age;

    // 性别，1男性，2女性
    private Integer sex;

    // 出生日期
    private Date birthday;

    // 创建时间
    private Date created;

    // 更新时间
    private Date updated;

    // 备注
    private String note;
}

 mybatisplus:

package com.dsjg.user.mapper;

import com.dsjg.user.pojo.User;
import tk.mybatis.mapper.common.Mapper;

public interface UserMapper extends Mapper<User> {
}
Server服务：

package com.dsjg.user.service;


import com.dsjg.user.mapper.UserMapper;
import com.dsjg.user.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class UserService {


    @Autowired
    private UserMapper userMapper;


    public User queryById(Long id){

        return userMapper.selectByPrimaryKey(id);
    }
}

web层：

package com.dsjg.user.controller;

import com.dsjg.user.pojo.User;
import com.dsjg.user.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/user")
public class UserController {

    @Autowired
    private UserService userService;

    @GetMapping("/{id}")
    public User queryById(@PathVariable Long id){

        return userService.queryById(id);
    }
}
SpringBoot项目启动：

package com.dsjg.user;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import tk.mybatis.spring.annotation.MapperScan;

@SpringBootApplication
@MapperScan("com.dsjg.user.mapper")

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

二。服务调用者：

package com.dsjg.consumer.pojo;

import lombok.Data;

import java.util.Date;

@Data
public class User {
    private Long id;

    // 用户名
    private String userName;

    // 密码
    private String password;

    // 姓名
    private String name;

    // 年龄
    private Integer age;

    // 性别，1男性，2女性
    private Integer sex;

    // 出生日期
    private Date birthday;

    // 创建时间
    private Date created;

    // 更新时间
    private Date updated;

    // 备注
    private String note;
}

web层：

package com.dsjg.consumer.controller;


import com.dsjg.consumer.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
@RequestMapping("/consumer")
public class ConsumerController {

    @Autowired
    private RestTemplate restTemplate;

    @GetMapping("{id}") public User queryById(@PathVariable Long id){
        String url = "http://localhost:9091/user/" + id;
        return restTemplate.getForObject(url, User.class);
    }
}
SpringBoot启动层：

package com.dsjg.consumer;
import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;
@SpringBootApplication
public class ConsumerApplication {
    public static void main(String[] args) {

        SpringApplication.run(ConsumerApplication.class, args);
    }

    @Bean
    public RestTemplate restTemplate(){

        return new RestTemplate();
    }
}

SpringCloud入门

标签：new   data   数据   image   host   均衡   integer   void   creat   

原文地址：https://www.cnblogs.com/wang123--/p/13258722.html