Dubbo实战案例02【业务实现】-阿里云开发者社区

Dubbo实战案例02【业务实现】

2021-12-02 188

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简介： Dubbo实战案例02【业务实现】

文章目录

业务实现

添加用户信息

1.实现添加业务的服务

1.1dubbo-Mapper

1.2 dubbo-user-interface

1.3 dubbo-user-service

2.实现添加业务的业务

2.1 dubbo-user-portal-service

2.2 dubbo-user-portal

2.3 测试

查询用户信息

1.实现查询用户服务

1.1 dubbo-mapper

1.2 dubbo-user-interface

1.3 dubbo-user-service

2.实现查询用户业务

2.1 dubbo-user-protal-service

2.2 dubbo-user-protal

删除用户信息

1.实现删除用户服务

1.1 dubbo-mapper

1.2 dubbo-user-interface

1.3 dubbo-user-service

2.实现删除用户业务

2.1 dubbo-user-protal-service

2.2 dubbo-user-protal

本文在上篇文章的基础上来实现用户信息的CRUD操作

业务实现

添加用户信息

1.实现添加业务的服务

1.1dubbo-Mapper

/**
 * UsersMapper接口文件
 * @author dengp
 *
 */
public interface UsersMapper {
  void insertUsers(User user);
}

/**
 * UsersMapper接口文件
 * @author dengp
 *
 */
public interface UsersMapper {
  void insertUsers(User user);
}

1.2 dubbo-user-interface

package com.bobo.dubbo.service;
import com.bobo.pojo.User;
/**
 * 将用户的CRUD四个操作我们拆成了4个服务，便于演示dubbo
 * 实际开发过程中不用
 * @author dengp
 *
 */
public interface AddUserDubboService {
  void addUser(User user);
}

1.3 dubbo-user-service

package com.bobo.dubbo.service.impl;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import com.bobo.dubbo.service.AddUserDubboService;
import com.bobo.mapper.UsersMapper;
import com.bobo.pojo.User;
@Service
public class AddUserDubboServiceImpl implements AddUserDubboService {
  @Resource
  private UsersMapper userMapper;
  @Override
  public void addUser(User user) {
    // TODO Auto-generated method stub
    userMapper.insertUsers(user);
  }
}

注意我们在服务端添加了服务，我们需要在Dubbo中注册该服务。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
  xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
  xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
  xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://code.alibabatech.com/schema/dubbo
        http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
    <!-- 导入Spring相关的配置文件 -->
  <import resource="../../applicationContext-dao.xml" />
  <import resource="../../applicationContext-service.xml" />
  <import resource="../../applicationContext-trans.xml" />
  <dubbo:application name="user-provider" />
  <dubbo:registry protocol="zookeeper"
    address="node01:2181,node02:2181,node03:2181"/>
  <dubbo:protocol name="dubbo" port="20880"/>
  <!-- 向dubbo中注册的服务  -->
  <dubbo:service interface="com.bobo.dubbo.service.AddUserDubboService" 
        ref="addUserDubboServiceImpl"/>
</beans>

服务端测试

连接成功

2.实现添加业务的业务

2.1 dubbo-user-portal-service

/**
 * 用户管理的业务接口
 * @author dengp
 *
 */
public interface UserService {
  void addUser(User user);
}

@Service
public class UserServiceImpl implements UserService {
  @Resource
  private AddUserDubboService addUserService;
  @Override
  public void addUser(User user) {
    // TODO Auto-generated method stub
    addUserService.addUser(user);
  }
}

2.2 dubbo-user-portal

UserController

package com.bobo.controller;
import javax.annotation.Resource;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import com.bobo.pojo.User;
import com.bobo.service.UserService;
@Controller
@RequestMapping("/user")
public class UserController {
  @Resource
  private UserService userService;
  @RequestMapping("/addUser")
  public String addUser(User user){
    userService.addUser(user);
    return "success";
  }
}

Consumer需要指定从dubbo中获取什么服务

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://code.alibabatech.com/schema/dubbo
        http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
  <dubbo:application name="dubbo-consumer"/>
  <dubbo:registry  protocol="zookeeper"
    address="node01:2181,node02:2181,node03:2181" /> 
  <!-- 指定获取的服务 -->
  <dubbo:reference id="addUserDubboService"
     interface="com.bobo.dubbo.service.AddUserDubboService"/>
 </beans>

addUser.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
  <form action="/user/addUser" method="post">
    用户名：<input type="text" name="username" /><br /> 
    用户年龄：<input type="text" name="userage" /><br /> 
    <input type="submit" value="提交" />
  </form>
</body>
</html>

index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
  <h1>dubbo .... 欢迎</h1>
  <h2><a href="/addUser">添加用户信息</a></h2>
</body>
</html>

success.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
  <h1>操作成功</h1>
</body>
</html>

PageController

@Controller
public class PageController {
  @RequestMapping("/")
  public String index(){
    return "index";
  }
  @RequestMapping("/{path}")
  public String base(@PathVariable String path){
    return path;
  }
}

2.3 测试

报错

在访问

查询用户信息

1.实现查询用户服务

1.1 dubbo-mapper

1.2 dubbo-user-interface

1.3 dubbo-user-service

向dubbo注册服务

2.实现查询用户业务

2.1 dubbo-user-protal-service

2.2 dubbo-user-protal

userController

从dubbo中发现服务

index.jsp

user.jsp

<%@ page language="java" contentType="text/html; 
charset=UTF-8"
  pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 
Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
  <table border="1" align="center">
    <tr>
      <th>用户 ID</th>
      <th>用户姓名</th>
      <th>用户年龄</th>
      <th>操作</th>
    </tr>
    <c:forEach items="${list }" var="user">
      <tr>
        <td>${user.id }</td>
        <td>${user.username }</td>
        <td>${user.userage }</td>
        <td><a href="">更新</a> <a href="">删除</a></td>
      </tr>
    </c:forEach>
  </table>
</body>
</html>