SpringCloud简单的单点登录

墨蓝 2022-01-29 03:59 201阅读 0赞

# 单点登录 #

单点登录（Single Sign On），简称为 SSO，是目前比较流行的企业业务整合的解决方案之一。SSO的定义是在多个应用系统中，用户只需要登录一次就可以访问所有相互信任的应用系统。  
类似于京东，淘宝等…

#### 个人理解 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0p1bmVfRmx5aW5nRnJvc3Q_size_16_color_FFFFFF_t_70]

#### 代码实现(案例) ####

##### 1.导入redis依赖包 #####

<dependency>
         <groupId>redis.clients</groupId>
         <artifactId>jedis</artifactId>
         <version>2.9.0</version>
    </dependency>

##### 2.RedisUtil工具类 #####

/**
     * 1:连接池的封装
     * <p>
     * 2:api封装
     */
    public class RedisUtil {
        static JedisPool jedisPool = null;
    
        static {
            GenericObjectPoolConfig poolConfig = new JedisPoolConfig();
            //参数设置:
            poolConfig.setMaxTotal(30);//最大连接数
            poolConfig.setMaxIdle(10);//最大空闲数
            poolConfig.setMaxWaitMillis(3*1000);//超时时间
            poolConfig.setTestOnBorrow(true);//借的时候进行测试
    
            //你在做的时候,应该丢到properties的配置文件:直接用这个工具类
            String host = "127.0.0.1";
            int port = 6379;
            int timeout = 5 * 1000;
            String password = "123456";
            jedisPool = new JedisPool(poolConfig, host, port, timeout, password);
        }
    
        /**
         * 设置
         * @param key
         * @param value
         */
        public static void set(String key, String value) {
            // 1:获取jedis实例
            Jedis jedis = jedisPool.getResource();
            try {
                //2:api操作
                jedis.set(key, value);
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                if(jedis!=null) {
                    //3:资源换回
                    jedis.close();
                }
            }
        }
    
        /**
         * 获取
         * @param key
         * @return
         */
        public static String get(String key) {
            // 1:获取jedis实例
            Jedis jedis = jedisPool.getResource();
            try {
                //2:api操作
                return jedis.get(key);
            } catch (Exception e) {
                e.printStackTrace();
                return null;
            } finally {
                if(jedis!=null) {
                    //3:资源换回
                    jedis.close();
                }
            }
        }
    }

##### 3.创建注册中心Eureke(略) #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0p1bmVfRmx5aW5nRnJvc3Q_size_16_color_FFFFFF_t_70 1]

##### 4.创建sso\_login9001模块 #####

**pom.xml**

<dependency>
                <groupId>com.lining.sso</groupId>
                <artifactId>sso_base_util</artifactId>
                <version>1.0-SNAPSHOT</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-test</artifactId>
            </dependency>
    
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            </dependency>

**启动类**

@SpringBootApplication
    @EnableEurekaClient //表示是eureka的客户端
    public class UserProviderApplication_8001 {
    public static void main(String[] args) {
            SpringApplication.run(UserProviderApplication_8001.class);
        }
    }

**controller**

@Controller
    public class LoginController {
        
        @RequestMapping("/login")
        public void login(HttpServletRequest request, HttpServletResponse response){
            String name = request.getParameter("name");
            String password = request.getParameter("password");
            System.out.println(name+":"+password);
            String uuid = UUID.randomUUID().toString().substring(10);
            RedisUtil.set("uuid",name+":"+password);
            Cookie[] cookies = request.getCookies();
            Cookie cookie2=new Cookie("uuid",uuid);
            response.addCookie(cookie2);
        }
    }

##### 5.创建sso\_login9002模块 #####

**controller**

@Controller  
public class LoginController \{

@RequestMapping("/login")
        public void login(HttpServletRequest request, HttpServletResponse response){
            String name = request.getParameter("name");
            String password = request.getParameter("password");
            System.out.println(name+":"+password);
            Cookie[] cookies = request.getCookies();
            for (Cookie cookie:cookies) {
                if(cookie.getName().equals("uuid")){
                    System.out.println(cookie.getName());
                    String s = RedisUtil.get("uuid");
                    String[] split = StringUtils.split(s, ":");
                    System.out.println(split[0]);
                    System.out.println(split[1]);
                }
            }
        }

## 以上纯粹个人见解，若果我有什么错误？欢迎指正 ##

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