SpringBoot整合RabbitMQ-消息可靠性投递

原文链接： http://www.cnblogs.com/zhangbLearn/p/10304976.html

本系列是学习SpringBoot整合RabbitMQ的练手，包含服务安装，RabbitMQ整合SpringBoot2.x，消息可靠性投递实现等三篇博客。

　　学习路径：https://www.imooc.com/learn/1042 RabbitMQ消息中间件极速入门与实战 

　　项目源码：https://github.com/ZbLeaning/Boot-RabbitMQ 

---

 

设计一个消息可靠性投递方案，服务结构如下：

 

 组成：

　　Sender+Confirm Listener ：组成消息的生产者

　　MQ Broker：消息的消费者，包含具体的MQ服务

　　BIZ DB：业务数据数据库

　　MSG DB：消息日志记录数据库（0：发送中、1：发送成功、2：发送失败）

思路：

　　以最常见的创建订单业务来举例，假设订单创建成功后需要去发短信通知用户

　　1、先完成订单业务数据的存储，并记录这条操作日志（发送中）

　　2、生产者发送一条消息到消费者（异步）

　　3、消费者成功消费后给给Confirm listener发送应答

　　4、监听收到消息确认成功后，对消息日志表操作，修改之前的日志状态（发送成功）

　　5、在消费端返回应答的过程中，可能发生网络异常导致生产者未收到应答消息，因此需要一个定时任务去捞取状态是发送中并已经超时的消息集合

　　6、将捞取到的日志对应的消息，进行重发

　　7、定时任务判断设置的消息最大重投次数，大于最大重投次数就判断消息发送失败，更新日志记录状态（发送失败）

---

 项目搭建

　　Durid数据源配置文件

//druid.properties
##下面为连接池的补充设置，应用到上面所有数据源中
#初始化大小，最小，最大
druid.initialSize=5
druid.minIdle=10
druid.maxActive=300
#配置获取连接等待超时的时间
druid.maxWait=60000
#配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
druid.timeBetweenEvictionRunsMillis=60000
#配置一个连接在池中最小生存的时间，单位是毫秒
druid.minEvictableIdleTimeMillis=300000
druid.validationQuery=SELECT 1 FROM DUAL
druid.testWhileIdle=true
druid.testOnBorrow=false
druid.testOnReturn=false
#打开PSCache，并且指定每个连接上PSCache的大小
druid.poolPreparedStatements=true
druid.maxPoolPreparedStatementPerConnectionSize=20
#配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
druid.filters=stat,wall,log4j
#通过connectProperties属性来打开mergeSql功能；慢SQL记录
druid.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
#合并多个DruidDataSource的监控数据
druid.useGlobalDataSourceStat=true

　　添加相应的数据源配置类、定时任务配置类、常量类

package com.imooc.mq.config.database;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.PropertySource;
import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
import org.springframework.stereotype.Component;

/**
 * @Title: DruidDataSourceSettings
 * @Description: Druid数据源读取配置
 * @date 2019/1/2214:31
 */
@Component
@ConfigurationProperties(prefix = "spring.datasource")
@PropertySource("classpath:druid.properties")
public class DruidDataSourceSettings {
    private String driverClassName;
    private String url;
    private String username;
    private String password;

    @Value("${druid.initialSize}")
    private int initialSize;

    @Value("${druid.minIdle}")
    private int minIdle;

    @Value("${druid.maxActive}")
    private int maxActive;

    @Value("${druid.timeBetweenEvictionRunsMillis}")
    private long timeBetweenEvictionRunsMillis;

    @Value("${druid.minEvictableIdleTimeMillis}")
    private long minEvictableIdleTimeMillis;

    @Value("${druid.validationQuery}")
    private String validationQuery;

    @Value("${druid.testWhileIdle}")
    private boolean testWhileIdle;

    @Value("${druid.testOnBorrow}")
    private boolean testOnBorrow;

    @Value("${druid.testOnReturn}")
    private boolean testOnReturn;

    @Value("${druid.poolPreparedStatements}")
    private boolean poolPreparedStatements;

    @Value("${druid.maxPoolPreparedStatementPerConnectionSize}")
    private int maxPoolPreparedStatementPerConnectionSize;

    @Value("${druid.filters}")
    private String filters;

    @Value("${druid.connectionProperties}")
    private String connectionProperties;

    @Bean
    public static PropertySourcesPlaceholderConfigurer properdtyConfigure(){
        return new PropertySourcesPlaceholderConfigurer();
    }

    public String getDriverClassName() {
        return driverClassName;
    }
    public void setDriverClassName(String driverClassName) {
        this.driverClassName = driverClassName;
    }
    public String getUrl() {
        return url;
    }
    public void setUrl(String url) {
        this.url = url;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public int getInitialSize() {
        return initialSize;
    }
    public void setInitialSize(int initialSize) {
        this.initialSize = initialSize;
    }
    public int getMinIdle() {
        return minIdle;
    }
    public void setMinIdle(int minIdle) {
        this.minIdle = minIdle;
    }
    public int getMaxActive() {
        return maxActive;
    }
    public void setMaxActive(int maxActive) {
        this.maxActive = maxActive;
    }
    public long getTimeBetweenEvictionRunsMillis() {
        return timeBetweenEvictionRunsMillis;
    }
    public void setTimeBetweenEvictionRunsMillis(long timeBetweenEvictionRunsMillis) {
        this.timeBetweenEvictionRunsMillis = timeBetweenEvictionRunsMillis;
    }
    public long getMinEvictableIdleTimeMillis() {
        return minEvictableIdleTimeMillis;
    }
    public void setMinEvictableIdleTimeMillis(long minEvictableIdleTimeMillis) {
        this.minEvictableIdleTimeMillis = minEvictableIdleTimeMillis;
    }
    public String getValidationQuery() {
        return validationQuery;
    }
    public void setValidationQuery(String validationQuery) {
        this.validationQuery = validationQuery;
    }
    public boolean isTestWhileIdle() {
        return testWhileIdle;
    }
    public void setTestWhileIdle(boolean testWhileIdle) {
        this.testWhileIdle = testWhileIdle;
    }
    public boolean isTestOnBorrow() {
        return testOnBorrow;
    }
    public void setTestOnBorrow(boolean testOnBorrow) {
        this.testOnBorrow = testOnBorrow;
    }
    public boolean isTestOnReturn() {
        return testOnReturn;
    }
    public void setTestOnReturn(boolean testOnReturn) {
        this.testOnReturn = testOnReturn;
    }
    public boolean isPoolPreparedStatements() {
        return poolPreparedStatements;
    }
    public void setPoolPreparedStatements(boolean poolPreparedStatements) {
        this.poolPreparedStatements = poolPreparedStatements;
    }
    public int getMaxPoolPreparedStatementPerConnectionSize() {
        return maxPoolPreparedStatementPerConnectionSize;
    }
    public void setMaxPoolPreparedStatementPerConnectionSize(
            int maxPoolPreparedStatementPerConnectionSize) {
        this.maxPoolPreparedStatementPerConnectionSize = maxPoolPreparedStatementPerConnectionSize;
    }
    public String getFilters() {
        return filters;
    }
    public void setFilters(String filters) {
        this.filters = filters;
    }
    public String getConnectionProperties() {
        return connectionProperties;
    }
    public void setConnectionProperties(String connectionProperties) {
        this.connectionProperties = connectionProperties;
    }
}

package com.imooc.mq.config.database;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import javax.sql.DataSource;
import java.sql.SQLException;

import com.alibaba.druid.pool.DruidDataSource;
/**
 * @Title: DruidDataSourceConfig
 * @Description: Druid数据源初始化
 *
 * EnableTransactionManagement 开启事务
 * @date 2019/1/2214:35
 */

@Configuration
@EnableTransactionManagement
public class DruidDataSourceConfig {
    private static Logger logger = LoggerFactory.getLogger(com.imooc.mq.config.database.DruidDataSourceConfig.class);
    //注入数据源配置信息
    @Autowired
    private DruidDataSourceSettings druidSettings;

    public static String DRIVER_CLASSNAME;

    @Bean
    public static PropertySourcesPlaceholderConfigurer propertyConfigure() {
        return new PropertySourcesPlaceholderConfigurer();
    }

    /**
     * 创建DataSource
     * @return
     * @throws SQLException
     */
    @Bean
    public DataSource dataSource() throws SQLException {
        DruidDataSource ds = new DruidDataSource();
        ds.setDriverClassName(druidSettings.getDriverClassName());
        DRIVER_CLASSNAME = druidSettings.getDriverClassName();
        ds.setUrl(druidSettings.getUrl());
        ds.setUsername(druidSettings.getUsername());
        ds.setPassword(druidSettings.getPassword());
        ds.setInitialSize(druidSettings.getInitialSize());
        ds.setMinIdle(druidSettings.getMinIdle());
        ds.setMaxActive(druidSettings.getMaxActive());
        ds.setTimeBetweenEvictionRunsMillis(druidSettings.getTimeBetweenEvictionRunsMillis());
        ds.setMinEvictableIdleTimeMillis(druidSettings.getMinEvictableIdleTimeMillis());
        ds.setValidationQuery(druidSettings.getValidationQuery());
        ds.setTestWhileIdle(druidSettings.isTestWhileIdle());
        ds.setTestOnBorrow(druidSettings.isTestOnBorrow());
        ds.setTestOnReturn(druidSettings.isTestOnReturn());
        ds.setPoolPreparedStatements(druidSettings.isPoolPreparedStatements());
        ds.setMaxPoolPreparedStatementPerConnectionSize(druidSettings.getMaxPoolPreparedStatementPerConnectionSize());
        ds.setFilters(druidSettings.getFilters());
        ds.setConnectionProperties(druidSettings.getConnectionProperties());
        logger.info(" druid datasource config : {} ", ds);
        return ds;
    }

    /**
     * 开启事务
     * @return
     * @throws Exception
     */
    @Bean
    public PlatformTransactionManager transactionManager() throws Exception {
        DataSourceTransactionManager txManager = new DataSourceTransactionManager();
        txManager.setDataSource(dataSource());
        return txManager;
    }
}

package com.imooc.mq.config.database;

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;

import javax.sql.DataSource;

/**
 * @Title: MybatisDataSourceConfig
 * @Description: 整合mybatis和Druid
 * @date 2019/1/2214:39
 */
@Configuration
public class MybatisDataSourceConfig {
    @Autowired
    private DataSource dataSource;

    @Bean(name="sqlSessionFactory")
    public SqlSessionFactory sqlSessionFactoryBean() {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        // 添加XML目录
        ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        try {
            bean.setMapperLocations(resolver.getResources("classpath:mapping/*.xml"));
            SqlSessionFactory sqlSessionFactory = bean.getObject();
            sqlSessionFactory.getConfiguration().setCacheEnabled(Boolean.TRUE);

            return sqlSessionFactory;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    @Bean
    public SqlSessionTemplate sqlSessionTemplate(SqlSessionFactory sqlSessionFactory) {
        return new SqlSessionTemplate(sqlSessionFactory);
    }
}

package com.imooc.mq.config.database;

import org.mybatis.spring.mapper.MapperScannerConfigurer;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
 * @Title: MybatisMapperScanerConfig
 * @Description: 扫码Mybatis
 * @AutoConfigureAfter(MybatisDataSourceConfig.class) 先加载数据源类，再加载该类
 * @date 2019/1/2214:43
 */
@Configuration
@AutoConfigureAfter(MybatisDataSourceConfig.class)
public class MybatisMapperScanerConfig {
    @Bean
    public MapperScannerConfigurer mapperScannerConfigurer() {
        MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();
        mapperScannerConfigurer.setSqlSessionFactoryBeanName("sqlSessionFactory");
        mapperScannerConfigurer.setBasePackage("com.imooc.mq.mapper");
        return mapperScannerConfigurer;
    }
}

 

package com.imooc.mq.config.task;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.SchedulingConfigurer;
import org.springframework.scheduling.config.ScheduledTaskRegistrar;

import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
/**
 * @Title: TaskSchedulerConfig
 * @Description: 定时任务配置
 * @date 2019/1/2214:46
 */
@Configuration
@EnableScheduling //启动定时任务
public class TaskSchedulerConfig  implements SchedulingConfigurer {
    @Override
    public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
        taskRegistrar.setScheduler(taskScheduler());
    }

    /**
     * 定时任务线程池
     * @return
     */
    @Bean(destroyMethod = "shutdown")
    public Executor taskScheduler(){
        return Executors.newScheduledThreadPool(100);
    }
}

package com.imooc.mq.constant;

/**
 * @Title: Constans
 * @Description: 常量
 * @date 2019/1/2214:50
 */
public class Constans {
    /**
     * 发送中
     */
    public static final String ORDER_SENDING = "0";

    /**
     * 发送成功
     */
    public static final String ORDER_SEND_SUCCESS = "1";

    /**
     * 发送失败
     */
    public static final String ORDER_SEND_FAILURE = "2";
    /**
     * 分钟超时单位：min
     */
    public static final int ORDER_TIMEOUT = 1;
}

---

 相应的mapper接口和mapper.xml文件配置

package com.imooc.mq.mapper;

import com.imooc.mq.entity.BrokerMessageLog;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Repository;

import java.util.Date;
import java.util.List;

/**
 * @Title: BrokerMessageLogMapper
 * @Description: 消息记录接口
 * @date 2019/1/2214:45
 */
@Repository
public interface BrokerMessageLogMapper {
    /**
     * 查询消息状态为0(发送中) 且已经超时的消息集合
     * @return
     */
    List query4StatusAndTimeoutMessage();

    /**
     * 重新发送统计count发送次数 +1
     * @param messageId
     * @param updateTime
     */
    void update4ReSend(@Param("messageId")String messageId, @Param("updateTime") Date updateTime);
    /**
     * 更新最终消息发送结果 成功 or 失败
     * @param messageId
     * @param status
     * @param updateTime
     */
    void changeBrokerMessageLogStatus(@Param("messageId")String messageId, @Param("status")String status, @Param("updateTime")Date updateTime);

    int insertSelective(BrokerMessageLog record);
}
------------------------------------------------------------------
package com.imooc.mq.mapper;

import com.imooc.mq.entity.Order;
import org.springframework.stereotype.Repository;

/**
 * @Title: OrderMapper
 * @Description: 订单接口
 * @date 2019/1/2214:45
 */
@Repository
public interface OrderMapper {
    int insert(Order record);
    int deleteByPrimaryKey(Integer id);
    int insertSelective(Order record);
    Order selectByPrimaryKey(Integer id);
    int updateByPrimaryKeySelective(Order record);
    int updateByPrimaryKey(Order record);
}

    
        
        
        
        
        
        
        
    
    
    message_id, message, try_count, status, next_retry, create_time, update_time
  

    
        select
        
        from broker_message_log
        where message_id = #{messageId,jdbcType=VARCHAR}
    
    
    delete from broker_message_log
    where message_id = #{messageId,jdbcType=VARCHAR}
  
    
    insert into broker_message_log (message_id, message, try_count,
      status, next_retry, create_time,
      update_time)
    values (#{messageId,jdbcType=VARCHAR}, #{message,jdbcType=VARCHAR}, #{tryCount,jdbcType=INTEGER},
      #{status,jdbcType=VARCHAR}, #{nextRetry,jdbcType=TIMESTAMP}, #{createTime,jdbcType=TIMESTAMP},
      #{updateTime,jdbcType=TIMESTAMP})
  
    
        insert into broker_message_log
        
            <if test="messageId != null" >
                message_id,
            if>
            <if test="message != null" >
                message,
            if>
            <if test="tryCount != null" >
                try_count,
            if>
            <if test="status != null" >
                status,
            if>
            <if test="nextRetry != null" >
                next_retry,
            if>
            <if test="createTime != null" >
                create_time,
            if>
            <if test="updateTime != null" >
                update_time,
            if>
        
        
            <if test="messageId != null" >
                #{messageId,jdbcType=VARCHAR},
            if>
            <if test="message != null" >
                #{message,jdbcType=VARCHAR},
            if>
            <if test="tryCount != null" >
                #{tryCount,jdbcType=INTEGER},
            if>
            <if test="status != null" >
                #{status,jdbcType=VARCHAR},
            if>
            <if test="nextRetry != null" >
                #{nextRetry,jdbcType=TIMESTAMP},
            if>
            <if test="createTime != null" >
                #{createTime,jdbcType=TIMESTAMP},
            if>
            <if test="updateTime != null" >
                #{updateTime,jdbcType=TIMESTAMP},
            if>
        
    
    
        update broker_message_log
        
            <if test="message != null" >
                message = #{message,jdbcType=VARCHAR},
            if>
            <if test="tryCount != null" >
                try_count = #{tryCount,jdbcType=INTEGER},
            if>
            <if test="status != null" >
                status = #{status,jdbcType=VARCHAR},
            if>
            <if test="nextRetry != null" >
                next_retry = #{nextRetry,jdbcType=TIMESTAMP},
            if>
            <if test="createTime != null" >
                create_time = #{createTime,jdbcType=TIMESTAMP},
            if>
            <if test="updateTime != null" >
                update_time = #{updateTime,jdbcType=TIMESTAMP},
            if>
        
        where message_id = #{messageId,jdbcType=VARCHAR}
    
    
    update broker_message_log
    set message = #{message,jdbcType=VARCHAR},
      try_count = #{tryCount,jdbcType=INTEGER},
      status = #{status,jdbcType=VARCHAR},
      next_retry = #{nextRetry,jdbcType=TIMESTAMP},
      create_time = #{createTime,jdbcType=TIMESTAMP},
      update_time = #{updateTime,jdbcType=TIMESTAMP}
    where message_id = #{messageId,jdbcType=VARCHAR}
  


    
          [CDATA[
          select message_id, message, try_count, status, next_retry, create_time, update_time
              from broker_message_log bml
              where status = '0'
              and next_retry <= sysdate()
          ]]>
    

    
    update broker_message_log bml
    set bml.try_count = bml.try_count + 1,
      bml.update_time = #{updateTime, jdbcType=TIMESTAMP}
    where bml.message_id = #{messageId,jdbcType=VARCHAR}
  

    
    update broker_message_log bml
    set bml.status = #{status,jdbcType=VARCHAR},
          bml.update_time = #{updateTime, jdbcType=TIMESTAMP}
    where bml.message_id = #{messageId,jdbcType=VARCHAR}
  


-------------------------------------------------------------



    
        
        
        
    
    
        
            
                <if test="criteria.valid" >
                    
                        
                            
                                
                                    and ${criterion.condition}
                                
                                
                                    and ${criterion.condition} #{criterion.value}
                                
                                
                                    and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                                
                                
                                    and ${criterion.condition}
                                    
                                        #{listItem}
                                    
                                
                            
                        
                    
                if>
            
        
    
    
        
            
                <if test="criteria.valid" >
                    
                        
                            
                                
                                    and ${criterion.condition}
                                
                                
                                    and ${criterion.condition} #{criterion.value}
                                
                                
                                    and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                                
                                
                                    and ${criterion.condition}
                                    
                                        #{listItem}
                                    
                                
                            
                        
                    
                if>
            
        
    
    
    id, name, message_id
  

    
        select
        
        from t_order
        where id = #{id,jdbcType=INTEGER}
    
    
    delete from t_order
    where id = #{id,jdbcType=INTEGER}
  

    
    insert into t_order (id, name, message_id
      )
    values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{messageId,jdbcType=VARCHAR}
      )
  
    
        insert into t_order
        
            <if test="id != null" >
                id,
            if>
            <if test="name != null" >
                name,
            if>
            <if test="messageId != null" >
                message_id,
            if>
        
        
            <if test="id != null" >
                #{id,jdbcType=INTEGER},
            if>
            <if test="name != null" >
                #{name,jdbcType=VARCHAR},
            if>
            <if test="messageId != null" >
                #{messageId,jdbcType=VARCHAR},
            if>
        
    

    
        update t_order
        
            <if test="record.id != null" >
                id = #{record.id,jdbcType=INTEGER},
            if>
            <if test="record.name != null" >
                name = #{record.name,jdbcType=VARCHAR},
            if>
            <if test="record.messageId != null" >
                message_id = #{record.messageId,jdbcType=VARCHAR},
            if>
        
        <if test="_parameter != null" >
            
        if>
    
    
        update t_order
        set id = #{record.id,jdbcType=INTEGER},
        name = #{record.name,jdbcType=VARCHAR},
        message_id = #{record.messageId,jdbcType=VARCHAR}
        <if test="_parameter != null" >
            
        if>
    
    
        update t_order
        
            <if test="name != null" >
                name = #{name,jdbcType=VARCHAR},
            if>
            <if test="messageId != null" >
                message_id = #{messageId,jdbcType=VARCHAR},
            if>
        
        where id = #{id,jdbcType=INTEGER}
    
    
    update t_order
    set name = #{name,jdbcType=VARCHAR},
      message_id = #{messageId,jdbcType=VARCHAR}
    where id = #{id,jdbcType=INTEGER}
  

 

package com.imooc.mq.entity;

import java.util.Date;

/**
 * @Title: BrokerMessageLog
 * @Description: 消息记录
 * @date 2019/1/2214:29
 */
public class BrokerMessageLog {
    private String messageId;

    private String message;

    private Integer tryCount;

    private String status;

    private Date nextRetry;

    private Date createTime;

    private Date updateTime;

    public BrokerMessageLog() {
    }

    public BrokerMessageLog(String messageId, String message, Integer tryCount, String status, Date nextRetry, Date createTime, Date updateTime) {
        this.messageId = messageId;
        this.message = message;
        this.tryCount = tryCount;
        this.status = status;
        this.nextRetry = nextRetry;
        this.createTime = createTime;
        this.updateTime = updateTime;
    }

    public String getMessageId() {
        return messageId;
    }

    public void setMessageId(String messageId) {
        this.messageId = messageId;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public Integer getTryCount() {
        return tryCount;
    }

    public void setTryCount(Integer tryCount) {
        this.tryCount = tryCount;
    }

    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    public Date getNextRetry() {
        return nextRetry;
    }

    public void setNextRetry(Date nextRetry) {
        this.nextRetry = nextRetry;
    }

    public Date getCreateTime() {
        return createTime;
    }

    public void setCreateTime(Date createTime) {
        this.createTime = createTime;
    }

    public Date getUpdateTime() {
        return updateTime;
    }

    public void setUpdateTime(Date updateTime) {
        this.updateTime = updateTime;
    }
}
--------------------------------------------------------------
package com.imooc.mq.entity;

import java.io.Serializable;

/**
 * @Title: Order
 * @Description: 订单
 * @date 2019/1/2210:18
 */
public class Order implements Serializable {
    private String id;
    private String name;
    //存储消息发送的唯一标识
    private String messageId;

    public Order() {
    }

    public Order(String id, String name, String messageId) {
        this.id = id;
        this.name = name;
        this.messageId = messageId;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getMessageId() {
        return messageId;
    }

    public void setMessageId(String messageId) {
        this.messageId = messageId;
    }

}

 

---

 

现在开始按照设计思路写实现代码：

　　1、首先我们把最核心了生产者写好，生产者组成有基本的消息投递，和监听

package com.imooc.mq.producer;


import com.imooc.mq.constant.Constans;
import com.imooc.mq.entity.Order;
import com.imooc.mq.mapper.BrokerMessageLogMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.amqp.rabbit.connection.CorrelationData;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.Date;

/**
 * @Title: RabbitOrderSender
 * @Description: 消息发送
 * @date 2019/1/2214:52
 */
@Component
public class RabbitOrderSender {
    private static Logger logger = LoggerFactory.getLogger(RabbitOrderSender.class);

    @Autowired
    private RabbitTemplate rabbitTemplate;

    @Autowired
    private BrokerMessageLogMapper brokerMessageLogMapper;

    /**
     * Broker应答后，会调用该方法区获取应答结果
     */
    final RabbitTemplate.ConfirmCallback confirmCallback = new RabbitTemplate.ConfirmCallback() {
        @Override
        public void confirm(CorrelationData correlationData, boolean ack, String cause) {
            logger.info("correlationData："+correlationData);
            String messageId = correlationData.getId();
            if (ack){
                //如果返回成功，则进行更新
                brokerMessageLogMapper.changeBrokerMessageLogStatus(messageId, Constans.ORDER_SEND_SUCCESS,new Date());
            }else {
                //失败进行操作：根据具体失败原因选择重试或补偿等手段
                logger.error("异常处理"+cause);
            }
        }
    };

    /**
     * 发送消息方法调用: 构建自定义对象消息
     * @param order
     * @throws Exception
     */
    public void sendOrder(Order order) throws Exception {
        // 通过实现 ConfirmCallback 接口，消息发送到 Broker 后触发回调，确认消息是否到达 Broker 服务器，也就是只确认是否正确到达 Exchange 中
        rabbitTemplate.setConfirmCallback(confirmCallback);
        //消息唯一ID
        CorrelationData correlationData = new CorrelationData(order.getMessageId());
        rabbitTemplate.convertAndSend("order-exchange1", "order.ABC", order, correlationData);
    }
}

　　2、将定时任务逻辑写好

package com.imooc.mq.task;

import com.imooc.mq.constant.Constans;
import com.imooc.mq.entity.BrokerMessageLog;
import com.imooc.mq.entity.Order;
import com.imooc.mq.mapper.BrokerMessageLogMapper;
import com.imooc.mq.producer.RabbitOrderSender;
import com.imooc.mq.utils.FastJsonConvertUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import java.util.Date;
import java.util.List;

/**
 * @Title: RetryMessageTasker
 * @Description: 定时任务
 * @date 2019/1/2215:45
 */
@Component
public class RetryMessageTasker {
    private static Logger logger = LoggerFactory.getLogger(RetryMessageTasker.class);
    @Autowired
    private RabbitOrderSender rabbitOrderSender;

    @Autowired
    private BrokerMessageLogMapper brokerMessageLogMapper;

    /**
     * 定时任务
     */
    @Scheduled(initialDelay = 5000, fixedDelay = 10000)
    public void reSend(){
        logger.info("-----------定时任务开始-----------");
        //抽取消息状态为0且已经超时的消息集合
        List list = brokerMessageLogMapper.query4StatusAndTimeoutMessage();
        list.forEach(messageLog -> {
            //投递三次以上的消息
            if(messageLog.getTryCount() >= 3){
                //更新失败的消息
                brokerMessageLogMapper.changeBrokerMessageLogStatus(messageLog.getMessageId(), Constans.ORDER_SEND_FAILURE, new Date());
            } else {
                // 重试投递消息，将重试次数递增
                brokerMessageLogMapper.update4ReSend(messageLog.getMessageId(),  new Date());
                Order reSendOrder = FastJsonConvertUtil.convertJSONToObject(messageLog.getMessage(), Order.class);
                try {
                    rabbitOrderSender.sendOrder(reSendOrder);
                } catch (Exception e) {
                    e.printStackTrace();
                    logger.error("-----------异常处理-----------");
                }
            }
        });
    }

}

　　3、写好消费者的逻辑，直接用上一篇中的消费者代码，修改对应的exchange、queue、路由key就好

package com.imooc.mq.consumer;

import com.imooc.mq.entity.Order;
import com.rabbitmq.client.Channel;
import org.springframework.amqp.rabbit.annotation.*;
import org.springframework.amqp.support.AmqpHeaders;
import org.springframework.messaging.handler.annotation.Headers;
import org.springframework.messaging.handler.annotation.Payload;
import org.springframework.stereotype.Component;

import java.util.Map;


/**
 * @Title: OrderReceiver
 * @Description: 消费
 * @date 2019/1/2211:03
 */
@Component
public class OrderReceiver {
    /**
     * @RabbitListener 消息监听，可配置交换机、队列、路由key
     * 该注解会创建队列和交互机 并建立绑定关系
     * @RabbitHandler 标识此方法如果有消息过来，消费者要调用这个方法
     * @Payload 消息体
     * @Headers 消息头
     * @param order
     */
    @RabbitListener(bindings = @QueueBinding(
            value = @Queue(value = "order-queue1",declare = "true"),
            exchange = @Exchange(name = "order-exchange1",declare = "true",type = "topic"),
            key = "order.ABC"
    ))
    @RabbitHandler
    public void onOrderMessage(@Payload Order order, @Headers Map headers,
                               Channel channel) throws Exception{
        //消费者操作
        System.out.println("------收到消息，开始消费------");
        System.out.println("订单ID："+order.getId());

        Long deliveryTag = (Long)headers.get(AmqpHeaders.DELIVERY_TAG);
        //现在是手动确认消息 ACK 
        channel.basicAck(deliveryTag,false);
    }
}

　　4、业务逻辑

package com.imooc.mq.service;

import com.imooc.mq.constant.Constans;
import com.imooc.mq.entity.BrokerMessageLog;
import com.imooc.mq.entity.Order;
import com.imooc.mq.mapper.BrokerMessageLogMapper;
import com.imooc.mq.mapper.OrderMapper;
import com.imooc.mq.producer.RabbitOrderSender;
import com.imooc.mq.utils.DateUtils;
import com.imooc.mq.utils.FastJsonConvertUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Date;

/**
 * @Title: OrderService
 * @Description: 业务实现
 * @date 2019/1/2215:41
 */
@Service
public class OrderService {
    private static Logger logger = LoggerFactory.getLogger(OrderService.class);
    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private BrokerMessageLogMapper brokerMessageLogMapper;

    @Autowired
    private RabbitOrderSender rabbitOrderSender;

    public void createOrder(Order order)  {
        try {
            // 使用当前时间当做订单创建时间（为了模拟一下简化）
            Date orderTime = new Date();
            // 插入业务数据
            orderMapper.insert(order);
            // 插入消息记录表数据
            BrokerMessageLog brokerMessageLog = new BrokerMessageLog();
            // 消息唯一ID
            brokerMessageLog.setMessageId(order.getMessageId());
            // 保存消息整体 转为JSON 格式存储入库
            brokerMessageLog.setMessage(FastJsonConvertUtil.convertObjectToJSON(order));
            // 设置消息状态为0 表示发送中
            brokerMessageLog.setStatus("0");
            // 设置消息未确认超时时间窗口为 一分钟
            brokerMessageLog.setNextRetry(DateUtils.addMinutes(orderTime, Constans.ORDER_TIMEOUT));
            brokerMessageLog.setCreateTime(new Date());
            brokerMessageLog.setUpdateTime(new Date());
            brokerMessageLogMapper.insertSelective(brokerMessageLog);
            // 发送消息
            rabbitOrderSender.sendOrder(order);
        } catch (Exception e) {
            logger.error("订单业务异常{}",e);
        }
    }
}

　　5、测试

 /**
     * 测试订单创建
     */
    @Test
    public void createOrder(){
        Order order = new Order();
        order.setId("201901228");
        order.setName("测试订单");
        order.setMessageId(System.currentTimeMillis() + "$" + UUID.randomUUID().toString());
        try {
            orderService.createOrder(order);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

　　先启动消费者服务、再启动生产者服务让定时任务跑起来，最后启动测试方法。消息被消费成功后，日志记录状态被修改为1。测试消息重投的话需要制造一些异常情况，比如修改消费者端跟exchange，生产者找不到该交互机，拿不到回调，就会重试投递。

 

转载于:https://www.cnblogs.com/zhangbLearn/p/10304976.html