springbatch 批量读写demo

心已赠人 2023-01-21 05:20 106阅读 0赞

这两天做到一个需求，需要一次性将一张数据表里的所有资源数据中的位置信息录入到redis中，表中的数据有几百万起步，采用的是java定时任务，循环每次查出一万条数据存入redis，测试时发现插入效率非常慢，经过排查发现是通过mybatis查询数据的耗时超过了总耗时的99%，我这台机器上是每查询一万条数据返回耗时87s左右。  
解决方法：  
在mapper.xml中的中加入fetchSize参数，设置的大一些，如下：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMjUwMTIy_size_16_color_FFFFFF_t_70]  
pageSize 每次分页大小配置

/* * Copyright yangjunxiong 2021 Wicrenet, Inc. All rights reserved. */
    package com.aegonthtf.fate.service.batch;
    
    import com.aegonthtf.fate.constant.CommonConstant;
    import com.aegonthtf.fate.constant.EventTypeEnum;
    import com.aegonthtf.fate.entity.esales.AthActExport;
    import com.aegonthtf.fate.entity.user.FateSalesAct;
    import com.aegonthtf.fate.service.batch.listener.StartJobExecutionListener;
    import com.aegonthtf.fate.service.batch.processor.AthActExportItemProcessor;
    import com.google.common.collect.ImmutableMap;
    import org.joda.time.LocalDateTime;
    import org.springframework.batch.core.Job;
    import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;
    import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
    import org.springframework.batch.core.configuration.annotation.StepScope;
    import org.springframework.batch.item.database.*;
    import org.springframework.batch.item.database.builder.JdbcPagingItemReaderBuilder;
    import org.springframework.batch.item.database.support.MySqlPagingQueryProvider;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.beans.factory.annotation.Qualifier;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    import javax.sql.DataSource;
    import java.util.HashMap;
    import java.util.Map;
    
    @Configuration
    public class AthActExportBatchJob { 
        //创建 创建job的对象
        @Autowired
        private       JobBuilderFactory         jobBuilderFactory;
        //创建 创建step的对象
        @Autowired
        private       StepBuilderFactory        stepBuilderFactory;
        @Autowired
        private       StartJobExecutionListener startJobExecutionListener;
        @Autowired
        @Qualifier("ThirdDataSource")
        private       DataSource                dataSource;
        private final EventTypeEnum             eventTypeEnum = EventTypeEnum.E1;//ATH_ACT_EXPORT表里有E1,E2,E3,E7
        @Autowired
        private       AthActExportItemProcessor athActExportItemProcessor;
    
        //启动器
        public Job itemReaderFromDBJob(LocalDateTime staratDateTime) { 
            String date = staratDateTime.toString(CommonConstant.yyyyMMddHHmmss);
            return jobBuilderFactory.get(eventTypeEnum.getiTableName() + ":Job" + ":" + date)
                    .start(stepBuilderFactory.get(eventTypeEnum.getiTableName() + ":Step" + date)
                            .<AthActExport, FateSalesAct>chunk(CommonConstant.BEHAVIOR_BATCH_SIZE)
                            .reader(itemReaderFromDB(CommonConstant.NULL))
                            .processor(athActExportItemProcessor)
                            .writer(writer())
                            .build()
                    )
                    .listener(startJobExecutionListener)
                    .build();
        }
    
        @Bean
        @StepScope
        public JdbcPagingItemReader<AthActExport> itemReaderFromDB(@Value("#{jobParameters[map]}") String map) { 
            return new JdbcPagingItemReaderBuilder<AthActExport>()
                    .dataSource(dataSource)
                    .name(eventTypeEnum.getiTableName())
                    .fetchSize(CommonConstant.FETCH_SIZE)
                    .parameterValues(ImmutableMap.of("delFlag", CommonConstant._1))
                    .pageSize(CommonConstant.BEHAVIOR_BATCH_SIZE)
                    .rowMapper((resultSet, i) -> { 
                                AthActExport entity = new AthActExport();
                                entity.setId(resultSet.getInt(CommonConstant._1));            //ID
                                entity.setInfoKind(resultSet.getString(CommonConstant._2));   //INFO_KIND
                                entity.setEventType(resultSet.getString(CommonConstant._3));  //EVENT_TYPE
                                entity.setTransId(resultSet.getString(CommonConstant._4));    //TRANS_ID
                                entity.setTransDate(resultSet.getString(CommonConstant._5));  //TRANS_DATE （YYYYMMDD）
                                entity.setTransTime(resultSet.getDate(CommonConstant._6));    //TRANS_TIME (datetime)
                                entity.setAgentCode(resultSet.getString(CommonConstant._7));  //AGENT_CODE
                                entity.setAgentName(resultSet.getString(CommonConstant._8));  //AGENT_NAME
                                entity.setCustOpenid(resultSet.getString(CommonConstant._9)); //CUST_OPENID
                                entity.setOpenTime(resultSet.getDate(CommonConstant._10));    //OPEN_TIME (datetime)
                                entity.setSubTime(resultSet.getDate(CommonConstant._11));     //SUB_TIME (datetime)
                                entity.setAthId(resultSet.getString(CommonConstant._12));     //ATH_ID
                                entity.setCustName(resultSet.getString(CommonConstant._13));  //CUST_NAME
                                entity.setCustPhone(resultSet.getString(CommonConstant._14)); //CUST_PHONE
                                entity.setCustGender(resultSet.getString(CommonConstant._15));//CUST_GENDER
                                entity.setInfoTitle(resultSet.getString(CommonConstant._16)); //INFO_TITLE
                                entity.setInfoSource(resultSet.getString(CommonConstant._17));//INFO_SOURCE
                                entity.setCreatetime(resultSet.getDate(CommonConstant._18));  //CREATETIME
                                entity.setCreater(resultSet.getString(CommonConstant._19));   //CREATER
                                entity.setUpdatetime(resultSet.getDate(CommonConstant._20));  //UPDATETIME
                                entity.setDelFlag(resultSet.getString(CommonConstant._21));   //DEL_FLAG
                                return entity;
                            }
                    )
                    .queryProvider(articleProvider())
                    .build();
        }
    
        private PagingQueryProvider articleProvider() { 
            Map<String, Order> sortKeys = new HashMap<>(CommonConstant._1);
            sortKeys.put("ID", Order.ASCENDING);
            MySqlPagingQueryProvider provider = new MySqlPagingQueryProvider();
            provider.setSelectClause("ID, INFO_KIND, EVENT_TYPE, TRANS_ID, TRANS_DATE, TRANS_TIME, AGENT_CODE, AGENT_NAME, CUST_OPENID, OPEN_TIME, SUB_TIME, ATH_ID, CUST_NAME, CUST_PHONE, CUST_GENDER, INFO_TITLE, INFO_SOURCE, CREATETIME, CREATER, UPDATETIME, DEL_FLAG");
            provider.setFromClause("FROM " + eventTypeEnum.getiTableName());//ATH_ACT_EXPORT表里有E1,E2,E3,E7
    // provider.setWhereClause("event_occurred_time >= :startTime AND event_occurred_time < :stopTime");
            provider.setWhereClause("DEL_FLAG = :delFlag");
            provider.setSortKeys(sortKeys);
            return provider;
        }
    
        @Bean
        public JdbcBatchItemWriter<FateSalesAct> writer() { 
            JdbcBatchItemWriter<FateSalesAct> writer = new JdbcBatchItemWriter<>();
            writer.setItemSqlParameterSourceProvider(new BeanPropertyItemSqlParameterSourceProvider<>());
            writer.setSql("INSERT INTO " + eventTypeEnum.getoTableName() + " (ID, INFO_KIND, INFO_SOURCE, INFO_TITLE, EVENT_TYPE, TRANS_ID, TRANS_DATE, TRANS_TIME, AGENT_CODE, AGENT_NAME, AGENT_OPENID, CUST_OPENID, OPEN_DATE, OPEN_TIME, SUB_DATE, SUB_TIME, ATH_ID, SIS_ID, CUST_ID, CUST_NAME, CUST_PHONE, CUST_GENDER, CUST_AGE, CUST_OPR, CUST_EMAIL, RISK_NAME, FATE_APE, PAY_TIME, FATE_FYP, CREATEDATE, CREATETIME, CREATER, UPDATATIME, DEL_FLAG, POLICY_NO) VALUES (" +
                    ":id ,\n" +
                    ":infoKind ,\n" +
                    ":infoSource ,\n" +
                    ":infoTitle ,\n" +
                    ":eventType ,\n" +
                    ":transId ,\n" +
                    ":transDate ,\n" +
                    ":transTime ,\n" +
                    ":agentCode ,\n" +
                    ":agentName ,\n" +
                    ":agentOpenid ,\n" +
                    ":custOpenid ,\n" +
                    ":openDate ,\n" +
                    ":openTime ,\n" +
                    ":subDate ,\n" +
                    ":subTime ,\n" +
                    ":athId ,\n" +
                    ":sisId ,\n" +
                    ":custId ,\n" +
                    ":custName ,\n" +
                    ":custPhone ,\n" +
                    ":custGender ,\n" +
                    ":custAge ,\n" +
                    ":custOpr ,\n" +
                    ":custEmail ,\n" +
                    ":riskName ,\n" +
                    ":fateApe ,\n" +
                    ":payTime ,\n" +
                    ":fateFyp ,\n" +
                    ":createdate ,\n" +
                    ":createtime ,\n" +
                    ":creater ,\n" +
                    ":updatatime,\n" +
                    ":delFlag,\n" +
                    ":policyNo\n)");
            writer.setDataSource(dataSource);
            return writer;
        }
    }

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMjUwMTIy_size_16_color_FFFFFF_t_70]: /images/20221020/dacbc0807f2a423092133435f3411bd1.png