idea springcloud实例

最新推荐文章于 2025-07-07 19:19:29 发布

原创最新推荐文章于 2025-07-07 19:19:29 发布 · 1.3k 阅读

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本文详述了如何使用IntelliJ IDEA创建一个SpringCloud项目，包括设置Maven项目，创建Eureka Server模块，配置EurekaServerMain，编写application.yml，接着创建UserService模块，包含Controller、Entity、Mapper及UserServerMain，最后搭建UserUI模块，设置application.yml，并创建静态资源文件夹存放登录页面。

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创建maven项目
在这里插入图片描述
主maven pom配置

<?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>

    <groupId>cn.ps</groupId>
    <artifactId>SPTINGCLOUD</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>SPRINGCLOUD_EUREKASERVER</module>
        <module>SPTINGCLOUD_USERSERVICE</module>
        <module>SPTINGCLOUD_USERUI</module>
    </modules>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.10.RELEASE</version>
    </parent>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Edgware.SR2</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

</project>

创建SPRINGCLOUD_EUREKASERVER模块
在这里插入图片描述
SPRINGCLOUD_EUREKASERVER模块pom配置

<?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">
    <parent>
        <artifactId>SPTINGCLOUD</artifactId>
        <groupId>cn.ps</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>SPRINGCLOUD_EUREKASERVER</artifactId>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
        </dependency>
    </dependencies>

</project>

SPRINGCLOUD_EUREKASERVER模块创建一个EurekaServerMain的main方法

package cn.ps;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
@SpringBootApplication
@EnableEurekaServer
public class EurekaServerMain {

    public static void main(String[] args) {
        new SpringApplicationBuilder(EurekaServerMain.class).web(true).run(args);
    }

}

SPRINGCLOUD_EUREKASERVER模块resources写一个application.yml文件

server:
  port: 8761

eureka:
  instance:
    hostname: localhost
  client:
#是否注册到注册中心,注册中心自己不需要注册
    registerWithEureka: false
#是否抓取注册中心的注册信息
    fetchRegistry: false
#是微服务和客服端用来注册和发现的地址
    serviceUrl:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

创建SPTINGCLOUD_USERSERVICE模块
在这里插入图片描述
SPTINGCLOUD_USERSERVICE模块pom配置

<?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">
    <parent>
        <artifactId>SPTINGCLOUD</artifactId>
        <groupId>cn.ps</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>SPTINGCLOUD_USERSERVICE</artifactId>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.2</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.12</version>
            <scope>provided</scope>
        </dependency>

    </dependencies>

</project>

controller包

package cn.ps.controller;

import cn.ps.entity.Comm;
import cn.ps.entity.Result;
import cn.ps.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;
import java.util.Map;

@RestController
public class UserController {
    @Autowired
    UserMapper userMapper;
    @PostMapping(value="/validateUser")
    public Result validateUser(@RequestBody Comm comm){
        List<Map> maps = userMapper.queryUser(comm.getId(), comm.getStore());
        Result  r=new Result();
        if(maps.size()>0){
            r.setCode(1);
            r.setMsg("请输入正确的数值");
        }
        return r;
    }
}

entity(Comm与数据库表连接的类)包

package cn.ps.entity;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
public class Comm {
    private  String  id;
    private  String  store;

}

entity(Result 工具类用于判断)包

package cn.ps.entity;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.util.List;
@Data
@NoArgsConstructor
public class Result {
    private int code ;
    private  String  msg;
    private List date;
}

mapper包(与数据库建立连接的接口主要是负责sql语句)

package cn.ps.mapper;

import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;

import java.util.List;
import java.util.Map;

@Mapper
public interface UserMapper {
    @Select("select * from comm where id=#{id} and store=#{store}")
    public List<Map> queryUser(@Param("id")String id,@Param("store") String store);

}

SPTINGCLOUD_USERSERVICE模块创建一个UserServerMain 的main方法

package cn.ps;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@EnableEurekaClient
@RestController
public class UserServerMain {

    @RequestMapping("/")
    public String home() {
        return "Hello world";
    }

    public static void main(String[] args) {
        new SpringApplicationBuilder(UserServerMain.class).web(true).run(args);
    }

}

spring:
  application:
    name: userservice
  datasource:
    url: jdbc:mysql://localhost/unit02
    username: root
    password: ps123456
    driver-class-name: com.mysql.jdbc.Driver
server:
  port: 8081
eureka:
  instance:
    prefer-ip-address: true
    hostname: localhost
  client:
    register-with-eureka: true
    fetch-registry: true
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/

创建SPTINGCLOUD_USERUI模块
在这里插入图片描述
SPTINGCLOUD_USERUI模块pom配置

<?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">
   <parent>
       <artifactId>SPTINGCLOUD</artifactId>
       <groupId>cn.ps</groupId>
       <version>1.0-SNAPSHOT</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>

   <artifactId>SPTINGCLOUD_USERUI</artifactId>
   <dependencies>
       <dependency>
           <groupId>org.springframework.cloud</groupId>
           <artifactId>spring-cloud-starter-eureka</artifactId>
       </dependency>
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-web</artifactId>
       </dependency>
       <dependency>
           <groupId>org.projectlombok</groupId>
           <artifactId>lombok</artifactId>
           <version>1.16.12</version>
           <scope>provided</scope>
       </dependency>
   </dependencies>
</project>

controller包

package ps.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.client.RestTemplate;
import ps.entity.Comm;
import ps.entity.Result;

@Controller
public class UserController {
    @Autowired
    RestTemplate restTemplate;
    @PostMapping(value="/logins")
    public String logins(Comm comm){
        //需要调用userservice这个微服务
        String url ="http://USERSERVICE/validateUser";
        ResponseEntity<Result> commResponseEntity = restTemplate.postForEntity(url,comm,Result.class);
        Result body = commResponseEntity.getBody();
        if(body.getCode()==1){
            return "redirect:/suc.html";
        }else{
            return "redirect:/login.html";
        }


    }
}

entity(Comm与数据库表连接的类)包

package cn.ps.entity;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
public class Comm {
    private  String  id;
    private  String  store;

}

entity(Result 工具类用于判断)包

package cn.ps.entity;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.util.List;
@Data
@NoArgsConstructor
public class Result {
    private int code ;
    private  String  msg;
    private List date;
}

SPTINGCLOUD_USERUI模块创建一个UserUiMain的main方法

package ps;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.context.annotation.Bean;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@SpringBootApplication
@EnableEurekaClient
@RestController
public class UserUiMain {
    @LoadBalanced
    @Bean
    public RestTemplate restTemplate() {

        return new RestTemplate();
    }

    public static void main(String[] args) {
        new SpringApplicationBuilder(UserUiMain.class).web(true).run(args);
    }
}

SPTINGCLOUD_USERUI模块resources写一个application.yml文件

spring:
  application:
    name: userui
server:
  port: 80
eureka:
  instance:
    prefer-ip-address: true
    hostname: localhost
  client:
    register-with-eureka: true
    fetch-registry: true
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/

在resources中创建一个为static文件夹(一个简单的登录页面)

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<font size="5" color="990000">请登录</font><hr>
<form name="frmManage " method="post"
      action="logins" >
    <font size="3" color="990000">
        <label>用户名</label>
        <input type="text" name="id" ><br>
        <label>密&nbsp;&nbsp;码</label>
        <input type="password" name="store" ><br>
        <input type="submit" value="登录" />
        <font>

</form>
</body>
</html>