SpringCloud之网关模块开发

up:: SpringCloud用户模块测试

说明： 先开发网关模块原因是后续的商品上架等操作需要判断是否是管理员操作。。。

学习此篇博客前请先复习前面的zuul网关是如何写的通过网关zuul实现路由功能

开发网关

引入依赖

<?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>cloud-mall-practice</artifactId>
        <groupId>com.imooc</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
 
    <artifactId>cloud-mall-zuul</artifactId>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-zuul</artifactId>
        </dependency>
        <dependency>
            <groupId>com.imooc</groupId>
            <artifactId>cloud-mall-user</artifactId>
            <version>1.0-SNAPSHOT</version>
            <scope>compile</scope>
        </dependency>
    </dependencies>
 
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

前面已经讲过，注意需要注册为eureka-client,注册到eureka中心

不需要开发controller层，但需要开发Filter过滤器

package com.imooc.cloud.mall.practice.zuul.filter;
 
import com.imooc.cloud.mall.practice.common.common.Constant;
import com.imooc.cloud.mall.practice.user.model.pojo.User;
import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.context.RequestContext;
import com.netflix.zuul.exception.ZuulException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.springframework.cloud.netflix.zuul.filters.support.FilterConstants;
import org.springframework.stereotype.Component;
 
/**
 * 描述：     用户鉴权过滤器
 */
@Component
public class UserFilter extends ZuulFilter {
 
    @Override
    public String filterType() {
        return FilterConstants.PRE_TYPE;
    }
 
    @Override
    public int filterOrder() {
        return 0;
    }
 
    @Override
    public boolean shouldFilter() {
        RequestContext ctx = RequestContext.getCurrentContext();
        HttpServletRequest request = ctx.getRequest();
        String requestURI = request.getRequestURI();
        if (requestURI.contains("images") || requestURI.contains("pay")) {
            return false;
        }
        if (requestURI.contains("cart") || requestURI.contains("order")) {
            return true;
        }
        return false;
    }
 
    @Override
    public Object run() throws ZuulException {
        RequestContext currentContext = RequestContext.getCurrentContext();
        HttpServletRequest request = currentContext.getRequest();
        HttpSession session = request.getSession();
        User currentUser = (User)session.getAttribute(Constant.IMOOC_MALL_USER);
        if (currentUser == null) {
            currentContext.setSendZuulResponse(false);
            currentContext.setResponseBody("{\n"
                    + "    \"status\": 10007,\n"
                    + "    \"msg\": \"NEED_LOGIN\",\n"
                    + "    \"data\": null\n"
                    + "}");
            currentContext.setResponseStatusCode(200);
        }
 
        return null;
    }
}

说明： 其中的实现方法内容查看实现网关过滤器

为了引入用户模块的User类以及Constant类，需要引入用户模块依赖，因为用户模块依赖了公共模块，用户模块也用到了公共模块的Constant类，我们只需要引入用户模块依赖，就能找到公共模块依赖了。。。

<dependency>
    <groupId>com.imooc</groupId>
    <artifactId>cloud-mall-user</artifactId>
    <version>1.0-SNAPSHOT</version>
    <scope>compile</scope>
</dependency>

说明： 这里user对象在session里复习下以前文章： SpringBoot电商项目用户模块开发用户模块全接口

---

文件配置

server.port=8083
 
spring.datasource.name=imooc_mall_datasource
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/imooc_mall?useUnicode=true&characterEncoding=utf8&autoReconnect=true&useSSL=false&serverTimezone=UTC
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.username=root
spring.datasource.password=20020829
 
mybatis.mapper-locations=classpath*:mappers/*.xml
 
logging.pattern.console=%clr(%d{${LOG_DATEFORMAT_PATTERN:HH:mm:ss.SSS}}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:%wEx}
 
eureka.client.service-url.defaultZone=http://localhost:8000/eureka/
 
spring.application.name=cloud-mall-zuul