Dubbo开发，利用项目模拟提供者和消费者之间的调用--初学

Posted 2021-01-25 wutongvip

 

 

 

 

 

开发工具：IDEA，虚拟机 VMware Workstation

预备工作：安装好zookeeper的虚拟机，电脑jdk更换为1.7，本地tomcat启动，能够访问以下页面即可进行开发

2.建立以下springboot工程，关系图如下

1.首先打包父工程wk-parent，把需要的公共依赖导入，供其他项目依赖

2.打包pojo项目wk-pojo，实体类全部实现序列化

3.以上两个都打jar包即可，接下来整合接口项目wk-interface，只是单纯的接口即可，供提供者业务层实现

4.开发提供者wk-dubbo

 

 

 a.service实现类代码

@Service(version="1.0.0")
public class UserService implements IUserService {

    @Autowired
    private UserDao userDao;

    @Override
    public User loginAdmin(User user) {
        return userDao.loginAdmin(user);
    }

    @Override
    public WitkeyUser login(WitkeyUser witkeyUser) {
        return userDao.login(witkeyUser);
    }
}
b.application.properties

server.port=8013
mybatis.mapper-locations=classpath:mapping/*.xml
mybatis.configuration.map-underscore-to-camel-case=true
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/weike?characterEncoding=utf-8
spring.datasource.username=root
spring.datasource.password=root
# 应用名称
spring.dubbo.application.name=provider
#注册中心地址
spring.dubbo.registry.address=zookeeper://192.168.17.130:2181
#协议名称
spring.dubbo.protocol.name=dubbo
#协议端口
spring.dubbo.protocol.port=20880
#服务类包目录
spring.dubbo.scan=com.buba.weike.dubbo.wkdubbo.service.impl
#打印mybatis日志信息
logging.level.com.buba.weike.dubbo.wkdubbo.dao=debug

5.开发消费者，把接口打包，加入项目依赖中，并注入到消费者service层的实现类中

 a.application.properties

## 避免和 server 工程端口冲突
server.port=8081
spring.mvc.view.prefix=/jsps/
spring.mvc.view.suffix=.jsp
## Dubbo 服务消费者配置
spring.dubbo.application.name=consumer
spring.dubbo.registry.address=zookeeper://192.168.17.130:2181
spring.dubbo.scan=com.buba.weike.duboo.wkmanager.service

b.UserConsumer 代码

 

@Component
public class UserConsumer implements IUserConsumer {

    @Reference(version="1.0.0")
    IUserService iUserService;

    public User loginAdmin(User user) {
        return iUserService.loginAdmin(user);
    }
}

c.controller代码

@Controller
@RequestMapping("/user")
public class userController {

    @Autowired
    private IUserConsumer userService;

    //登录
    @ResponseBody
    @RequestMapping("/loginAdmin")
    public Map<String,String> loginAjax(User user, String code,HttpSession session){
        Map<String,String> map=new HashMap<String,String>();
        String codet=(String)session.getAttribute("verCode");
        if(codet==null){
            map.put("flag","false");
            map.put("messages","请输入验证码！");
        }
        if(codet!=null && codet.equalsIgnoreCase(code)){
            map.put("flag","true");
            map.put("messages","验证码正确！");
        }
        if(codet!=null && !codet.equalsIgnoreCase(code)){
            map.put("flag","false");
            map.put("messages","验证码错误！");
        }
        User us =userService.loginAdmin(user);
        if(us!=null){
            session.setAttribute("user",us);
            map.put("flag","true");
            map.put("messages","登录成功！");
        }else{
            map.put("flag","false");
            map.put("messages","账户名或密码错误！");
        }
        return map;
    }


    //生成图片
    @RequestMapping("/authImage")
    public void authImage(HttpServletResponse response, HttpSession session) throws IOException {
        response.setHeader("Pragma", "No-cache");
        response.setHeader("Cache-Control", "no-cache");
        response.setDateHeader("Expires", 0);
        response.setContentType("image/jpeg");
        //生成随机字串
        String verifyCode = VerifyCodeUtils.generateVerifyCode(4);
        //存入会话session
        //删除以前的
        session.removeAttribute("verCode");
        session.setAttribute("verCode", verifyCode.toLowerCase());
        //生成图片
        int w = 100, h = 30;
        VerifyCodeUtils.outputImage(w, h, response.getOutputStream(), verifyCode);
    }



}
6.出现以下页面

 

提供者项目debug，sql语句信息

 

两个消费者wk-partol和wk-manager，这两个项目都是运行出现以下效果

总结：提供者提供所需接口，消费者去调用，开发分工更清晰，方便。