jsp 语言 JSP 整合 Spring Cloud Alibaba 进行微服务开发示例

JSP阿木 发布于 14 天前 3 次阅读


JSP 整合 Spring Cloud Alibaba 进行微服务开发示例

随着互联网技术的不断发展,微服务架构因其灵活性和可扩展性,已经成为现代企业应用开发的主流模式。JavaServer Pages(JSP)作为一种流行的服务器端技术,与Spring Cloud Alibaba结合,可以构建出高性能、高可用的微服务应用。本文将围绕JSP整合Spring Cloud Alibaba进行微服务开发,提供一个示例,并深入探讨相关技术。

环境准备

在开始之前,我们需要准备以下环境:

1. Java Development Kit (JDK) 1.8 或更高版本

2. Maven 3.5 或更高版本

3. Spring Cloud Alibaba版本(如:2.2.1.RELEASE)

4. 数据库(如:MySQL)

示例项目结构

以下是一个简单的JSP整合Spring Cloud Alibaba的微服务项目结构:


my-microservice


├── service-user


│ ├── src


│ │ ├── main


│ │ │ ├── java


│ │ │ │ └── com


│ │ │ │ └── my


│ │ │ │ └── microservice


│ │ │ │ └── user


│ │ │ │ └── controller


│ │ │ │ └── UserController.java


│ │ │ │ └── service


│ │ │ │ └── UserService.java


│ │ │ │ └── repository


│ │ │ │ └── UserRepository.java


│ │ │ │ └── entity


│ │ │ │ └── User.java


│ │ │ │ └── config


│ │ │ │ └── DataSourceConfig.java


│ │ ├── resources


│ │ │ ├── application.properties


│ │ │ └── mybatis


│ │ │ └── mapper


│ │ │ └── UserMapper.xml


│ ├── test


│ │ ├── java


│ │ │ └── com


│ │ │ └── my


│ │ │ └── microservice


│ │ │ └── user


│ │ │ └── controller


│ │ │ └── UserControllerTest.java


│ ├── pom.xml


│ └── Dockerfile


├── service-order


│ ├── src


│ │ ├── main


│ │ │ ├── java


│ │ │ │ └── com


│ │ │ │ └── my


│ │ │ │ └── microservice


│ │ │ │ └── order


│ │ │ │ └── controller


│ │ │ │ └── OrderController.java


│ │ │ │ └── service


│ │ │ │ └── OrderService.java


│ │ │ │ └── entity


│ │ │ │ └── Order.java


│ │ │ │ └── config


│ │ │ │ └── DataSourceConfig.java


│ │ ├── resources


│ │ │ ├── application.properties


│ │ │ └── mybatis


│ │ │ └── mapper


│ │ │ └── OrderMapper.xml


│ │ ├── test


│ │ │ ├── java


│ │ │ │ └── com


│ │ │ │ └── my


│ │ │ │ └── microservice


│ │ │ │ └── order


│ │ │ │ └── controller


│ │ │ │ └── OrderControllerTest.java


│ │ ├── pom.xml


│ └── Dockerfile


├── gateway


│ ├── src


│ │ ├── main


│ │ │ ├── java


│ │ │ │ └── com


│ │ │ │ └── my


│ │ │ │ └── microservice


│ │ │ │ └── gateway


│ │ │ │ └── controller


│ │ │ │ └── GatewayController.java


│ │ │ │ └── config


│ │ │ │ └── GatewayConfig.java


│ │ ├── resources


│ │ │ ├── application.properties


│ │ │ └── routes


│ │ │ └── routes.yml


│ │ ├── test


│ │ │ ├── java


│ │ │ │ └── com


│ │ │ │ └── my


│ │ │ │ └── microservice


│ │ │ │ └── gateway


│ │ │ │ └── controller


│ │ │ │ └── GatewayControllerTest.java


│ │ ├── pom.xml


│ └── Dockerfile


└── eureka


├── src


│ ├── main


│ │ ├── java


│ │ │ └── com


│ │ │ └── my


│ │ │ └── microservice


│ │ │ └── eureka


│ │ │ └── controller


│ │ │ └── EurekaController.java


│ │ │ └── config


│ │ │ └── EurekaConfig.java


│ ├── resources


│ │ ├── application.properties


│ │ └── mybatis


│ │ └── mapper


│ │ └── EurekaMapper.xml


│ ├── test


│ │ ├── java


│ │ │ └── com


│ │ │ └── my


│ │ │ └── microservice


│ │ │ └── eureka


│ │ │ └── controller


│ │ │ └── EurekaControllerTest.java


│ ├── pom.xml


└── Dockerfile


示例代码

1. 用户服务(service-user)

UserController.java

java

package com.my.microservice.user.controller;

import com.my.microservice.user.entity.User;


import com.my.microservice.user.service.UserService;


import org.springframework.beans.factory.annotation.Autowired;


import org.springframework.web.bind.annotation.;

@RestController


@RequestMapping("/user")


public class UserController {

@Autowired


private UserService userService;

@GetMapping("/{id}")


public User getUserById(@PathVariable Long id) {


return userService.getUserById(id);


}

@PostMapping("/")


public User addUser(@RequestBody User user) {


return userService.addUser(user);


}


}


UserService.java

java

package com.my.microservice.user.service;

import com.my.microservice.user.entity.User;


import com.my.microservice.user.repository.UserRepository;


import org.springframework.beans.factory.annotation.Autowired;


import org.springframework.stereotype.Service;

import java.util.List;

@Service


public class UserService {

@Autowired


private UserRepository userRepository;

public User getUserById(Long id) {


return userRepository.findById(id).orElse(null);


}

public User addUser(User user) {


return userRepository.save(user);


}

public List<User> getAllUsers() {


return userRepository.findAll();


}


}


UserRepository.java

java

package com.my.microservice.user.repository;

import com.my.microservice.user.entity.User;


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

public interface UserRepository extends JpaRepository<User, Long> {


}


User.java

java

package com.my.microservice.user.entity;

import javax.persistence.Entity;


import javax.persistence.GeneratedValue;


import javax.persistence.GenerationType;


import javax.persistence.Id;

@Entity


public class User {

@Id


@GeneratedValue(strategy = GenerationType.IDENTITY)


private Long id;

private String name;

private String email;

// Getters and Setters


}


2. 订单服务(service-order)

OrderController.java

java

package com.my.microservice.order.controller;

import com.my.microservice.order.entity.Order;


import com.my.microservice.order.service.OrderService;


import org.springframework.beans.factory.annotation.Autowired;


import org.springframework.web.bind.annotation.;

@RestController


@RequestMapping("/order")


public class OrderController {

@Autowired


private OrderService orderService;

@GetMapping("/{id}")


public Order getOrderById(@PathVariable Long id) {


return orderService.getOrderById(id);


}

@PostMapping("/")


public Order addOrder(@RequestBody Order order) {


return orderService.addOrder(order);


}


}


OrderService.java

java

package com.my.microservice.order.service;

import com.my.microservice.order.entity.Order;


import com.my.microservice.order.repository.OrderRepository;


import org.springframework.beans.factory.annotation.Autowired;


import org.springframework.stereotype.Service;

import java.util.List;

@Service


public class OrderService {

@Autowired


private OrderRepository orderRepository;

public Order getOrderById(Long id) {


return orderRepository.findById(id).orElse(null);


}

public Order addOrder(Order order) {


return orderRepository.save(order);


}

public List<Order> getAllOrders() {


return orderRepository.findAll();


}


}


OrderRepository.java

java

package com.my.microservice.order.repository;

import com.my.microservice.order.entity.Order;


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

public interface OrderRepository extends JpaRepository<Order, Long> {


}


Order.java

java

package com.my.microservice.order.entity;

import javax.persistence.Entity;


import javax.persistence.GeneratedValue;


import javax.persistence.GenerationType;


import javax.persistence.Id;

@Entity


public class Order {

@Id


@GeneratedValue(strategy = GenerationType.IDENTITY)


private Long id;

private String orderNumber;

private String customerName;

// Getters and Setters


}


3. 网关服务(gateway)

GatewayController.java

java

package com.my.microservice.gateway.controller;

import org.springframework.beans.factory.annotation.Autowired;


import org.springframework.cloud.gateway.filter.factory.RequestRateLimiterGatewayFilterFactory;


import org.springframework.cloud.gateway.route.RouteLocator;


import org.springframework.cloud.gateway.route.builder.RouteLocatorBuilder;


import org.springframework.context.annotation.Bean;


import org.springframework.web.bind.annotation.GetMapping;


import org.springframework.web.bind.annotation.RestController;

@RestController


public class GatewayController {

@Autowired


private RouteLocatorBuilder routeLocatorBuilder;

@Bean


public RouteLocator customRouteLocator(RouteLocatorBuilder builder) {


return builder.routes()


.route(r -> r.path("/user/").uri("lb://SERVICE-USER"))


.route(r -> r.path("/order/").uri("lb://SERVICE-ORDER"))


.build();


}


}


GatewayConfig.java

java

package com.my.microservice.gateway.config;

import org.springframework.context.annotation.Bean;


import org.springframework.context.annotation.Configuration;


import org.springframework.cloud.gateway.filter.factory.RequestRateLimiterGatewayFilterFactory;

@Configuration


public class GatewayConfig {

@Bean


public RequestRateLimiterGatewayFilterFactory requestRateLimiter() {


return new RequestRateLimiterGatewayFilterFactory();


}


}


4. Eureka服务注册中心(eureka)

EurekaController.java

java

package com.my.microservice.eureka.controller;

import org.springframework.beans.factory.annotation.Value;


import org.springframework.cloud.client.discovery.EnableDiscoveryClient;


import org.springframework.web.bind.annotation.GetMapping;


import org.springframework.web.bind.annotation.RestController;

@EnableDiscoveryClient


@RestController


public class EurekaController {

@Value("${server.port}")


private int port;

@GetMapping("/info")


public String getInfo() {


return "Eureka Server running on port: " + port;


}


}


EurekaConfig.java

java

package com.my.microservice.eureka.config;

import org.springframework.cloud.client.discovery.EnableDiscoveryClient;


import org.springframework.context.annotation.Configuration;

@Configuration


@EnableDiscoveryClient


public class EurekaConfig {


}


总结

本文通过一个简单的示例,展示了如何使用JSP整合Spring Cloud Alibaba进行微服务开发。在实际项目中,我们可以根据需求扩展服务功能,如添加认证、授权、日志记录等。还可以利用Spring Cloud Alibaba提供的其他组件,如Nacos配置中心、Sentinel流控降级等,进一步提升应用性能和稳定性。

在微服务架构中,JSP可以作为前端展示技术,与后端微服务进行交互。通过Spring Cloud Alibaba,我们可以轻松实现服务注册与发现、负载均衡、熔断降级等功能,从而构建出高性能、高可用的微服务应用。