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spring Batch兑现数据库大数据量读写

分类: IT文章 • 2022-05-05 21:31:07
spring Batch实现数据库大数据量读写

1. data-source-context.xml

 

<?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:context="http://www.springframework.org/schema/context"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans	http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
	http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

	<!-- 1) USE ANNOTATIONS TO IDENTIFY AND WIRE SPRING BEANS. -->
	<context:component-scan base-package="net.etongbao.vasp.ac" />
	
	<!-- 2) DATASOURCE, TRANSACTION MANAGER AND JDBC TEMPLATE -->
 
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
		destroy-method="close" abstract="false" scope="singleton">
		<!-- oracle.jdbc.driver.oracleDriver -->
		<property name="driverClass" value="oracle.jdbc.OracleDriver" />
		<property name="jdbcUrl" value="jdbc:oracle:thin:@192.168.1.23:1521:orcl01" />
		<property name="user" value="USR_DEV01" />
		<property name="password" value="2AF0829C" />
		<property name="checkoutTimeout" value="30000" />
		<property name="maxIdleTime" value="120" />
		<property name="maxPoolSize" value="100" />
		<property name="minPoolSize" value="2" />
		<property name="initialPoolSize" value="2" />
		<property name="maxStatements" value="0" />
		<property name="maxStatementsPerConnection" value="0" />
		<property name="idleConnectionTestPeriod" value="30" />	
	</bean>
	<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
		<property name="dataSource" ref="dataSource" />
	</bean>

	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource" />
	</bean>
	
	<tx:annotation-driven transaction-manager="transactionManager" />
</beans>

 2. quartz-context.xml       commit-interval="10000"每次批量数据的条数，数值越大效率越高，可在此处添加事物处理，

每次回滚数就是commit-interval数

 

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:batch="http://www.springframework.org/schema/batch"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans	http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
	http://www.springframework.org/schema/batch http://www.springframework.org/schema/batch/spring-batch-2.1.xsd
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
	http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

	<import resource="data-source-context.xml"/>
	
	<!--   JOB REPOSITORY - WE USE IN-MEMORY REPOSITORY FOR OUR EXAMPLE -->
	<bean id="jobRepository"
		class="org.springframework.batch.core.repository.support.MapJobRepositoryFactoryBean">
		<property name="transactionManager" ref="transactionManager" />
	</bean>
	
	<!-- batch config -->
	<bean id="jobLauncher"
		class="org.springframework.batch.core.launch.support.SimpleJobLauncher">
		<property name="jobRepository" ref="jobRepository" />
	</bean>

	<!--  FINALLY OUR JOB DEFINITION. THIS IS A 1 STEP JOB -->
	<batch:job id="ledgerJob">
		<batch:listeners>
			<batch:listener ref="appJobExecutionListener" />
		</batch:listeners>
		<batch:step id="step1">
		   <batch:tasklet transaction-manager="transactionManager">
			<batch:tasklet>
				<batch:listeners>
					<batch:listener ref="itemFailureLoggerListener" />
				</batch:listeners>
				<batch:chunk reader="ledgerReader" writer="ledgerWriter"
					commit-interval="10000" /> <!-- 1万条进行一次commit -->
			</batch:tasklet>
                   </batch:tasklet>
		</batch:step>
	</batch:job>
	 
	<!--  READER -->
	<bean id="ledgerReader"
		class="org.springframework.batch.item.database.JdbcCursorItemReader">
		<property name="dataSource" ref="dataSource" />
		<property name="sql" value="select * from ledger" /> 
		<property name="rowMapper" ref="ledgerRowMapper" />
	</bean>
	 
	<!-- Spring Batch Job同一个job instance，成功执行后是不允许重新执行的【失败后是否允许重跑，可通过配置Job的restartable参数来控制，默认是true】，如果需要重新执行，可以变通处理，
		添加一个JobParameters构建类,以当前时间作为参数，保证其他参数相同的情况下却是不同的job instance -->
	<bean id="jobParameterBulider" class="org.springframework.batch.core.JobParametersBuilder" />
	
	<!-- 定时任务 开始 -->  
	<bean id="ledgerJobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">  
		<property name="targetObject">  
			<!-- 定时执行的类 -->  
			<ref bean="quartzLedgerJob" />  
		</property>  
		<property name="targetMethod">  
			<!-- 定时执行的类方法 -->  
			<value>execute</value>  
		</property>  
	</bean>  
  
	<bean id="ledgerCronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean" >  
		<!-- 这里不可以直接在属性jobDetail中引用taskJob，因为他要求的是一个jobDetail类型的对象，所以我们得通过MethodInvokingJobDetailFactoryBean来转一下 -->  
		<property name="jobDetail" >  
			<ref bean="ledgerJobDetail" />  
		</property>  
		<!--在每天下午18点到下午18:59期间的每1分钟触发  -->  
		<!--在每天上午10点40分准时触发  -->  
		<property name="cronExpression" >  
			<!-- <value>0 * 15 * * ?</value> -->
			<value>0 45 10 * * ? * </value> 
		</property>  
        
	</bean>  
      
	<!-- 触发器工厂，将所有的定时任务都注入工厂-->  
	<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">  
		<!-- 添加触发器 -->  
		<property name="triggers">  
			<list>  
				<!-- 将上面定义的测试定时任务注入（可以定义多个定时任务，同时注入）-->  
				<ref local="ledgerCronTrigger" />  
			</list>  
		</property>  
	</bean>  
	<!-- 定时任务 结束 -->  
</beans>

 

3.定时调度job类 QuartzLedgerJob.java

 

 package net.etongbao.vasp.ac.quartz;

import java.util.Date;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.batch.core.Job;
import org.springframework.batch.core.JobParametersBuilder;
import org.springframework.batch.core.launch.JobLauncher;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.util.StopWatch;

/**
 * 定时调度类
 * @author Fu Wei
 *
 */

@Component("quartzLedgerJob")
public class QuartzLedgerJob {

	private static final Logger LOG = LoggerFactory.getLogger(QuartzLedgerJob.class);

	@Autowired
	private JobLauncher jobLauncher;

	@Autowired
	private Job ledgerJob;

	@Autowired
	JobParametersBuilder jobParameterBulider;

	private static long counter = 0l;
	
	/**
	 * 执行业务方法
	 * @throws Exception
	 */
	public void execute() throws Exception {
		LOG.debug("start...");
		StopWatch sw = new StopWatch();
		sw.start();
		/*
		 * Spring Batch Job同一个job instance，成功执行后是不允许重新执行的【失败后是否允许重跑，
		 * 可通过配置Job的restartable参数来控制，默认是true】，如果需要重新执行，可以变通处理，
		 * 添加一个JobParameters构建类,以当前时间作为参数，保证其他参数相同的情况下却是不同的job instance
		 */
		jobParameterBulider.addDate("date", new Date());
		jobLauncher.run(ledgerJob, jobParameterBulider.toJobParameters());
		sw.stop();
		LOG.debug("Time elapsed:{},Execute quartz ledgerJob:{}", sw.prettyPrint(), ++counter);
	}
}
 

 4.程序启动类 StartQuartz.java

 package net.etongbao.vasp.ac.quartz;

import java.io.FileNotFoundException;

import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * 启动定时调度
 * @author Fu Wei
 *
 */
public class StartQuartz {

	public static void main(String[] args) throws FileNotFoundException {

		new ClassPathXmlApplicationContext("/net/etongbao/vasp/ac/resources/quartz-context.xml");
	}
}

 

5.pojo类 Ledger.java

 

package net.etongbao.vasp.ac.pojo;

import java.io.Serializable;
import java.util.Date;

public class Ledger implements Serializable {

	private int id;
	private Date receiptDate;
	private String memberName;
	private String checkNumber;
	private Date checkDate;
	private String paymentType;
	private double depositAmount;
	private double paymentAmount;
	private String comments;

	public Ledger() {
		super();
	}

	public Ledger(int id, Date receiptDate, String memberName, String checkNumber, Date checkDate, String paymentType,
	        double depositAmount, double paymentAmount, String comments) {
		super();
		this.id = id;
		this.receiptDate = receiptDate;
		this.memberName = memberName;
		this.checkNumber = checkNumber;
		this.checkDate = checkDate;
		this.paymentType = paymentType;
		this.depositAmount = depositAmount;
		this.paymentAmount = paymentAmount;
		this.comments = comments;
	}

	public int getId() {
		return id;
	}

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

	public Date getReceiptDate() {
		return receiptDate;
	}

	public void setReceiptDate(Date receiptDate) {
		this.receiptDate = receiptDate;
	}

	public String getMemberName() {
		return memberName;
	}

	public void setMemberName(String memberName) {
		this.memberName = memberName;
	}

	public String getCheckNumber() {
		return checkNumber;
	}

	public void setCheckNumber(String checkNumber) {
		this.checkNumber = checkNumber;
	}

	public Date getCheckDate() {
		return checkDate;
	}

	public void setCheckDate(Date checkDate) {
		this.checkDate = checkDate;
	}

	public String getPaymentType() {
		return paymentType;
	}

	public void setPaymentType(String paymentType) {
		this.paymentType = paymentType;
	}

	public double getDepositAmount() {
		return depositAmount;
	}

	public void setDepositAmount(double depositAmount) {
		this.depositAmount = depositAmount;
	}

	public double getPaymentAmount() {
		return paymentAmount;
	}

	public void setPaymentAmount(double paymentAmount) {
		this.paymentAmount = paymentAmount;
	}

	public String getComments() {
		return comments;
	}

	public void setComments(String comments) {
		this.comments = comments;
	}
}

 

 6. LedgerDaoImpl.java

 package net.etongbao.vasp.ac.dao.impl;

import java.sql.PreparedStatement;
import java.sql.SQLException;
import net.etongbao.vasp.ac.dao.LedgerDao;
import net.etongbao.vasp.ac.pojo.Ledger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.PreparedStatementSetter;
import org.springframework.stereotype.Repository;

/**
 * ledger数据操作类
 * 
 * @author Fu Wei
 * 
 */

@Repository
public class LedgerDaoImpl implements LedgerDao {

	private static final String SAVE_SQL = "insert into ledger_temp (rcv_dt, mbr_nm, chk_nbr, chk_dt, pymt_typ, dpst_amt, pymt_amt, comments) values(?,?,?,?,?,?,?,?)";

	@Autowired
	private JdbcTemplate jdbcTemplate;

	@Override
	public void save(final Ledger item) {
		jdbcTemplate.update(SAVE_SQL, new PreparedStatementSetter() {
			public void setValues(PreparedStatement stmt) throws SQLException {
				stmt.setDate(1, new java.sql.Date(item.getReceiptDate().getTime()));
				stmt.setString(2, item.getMemberName());
				stmt.setString(3, item.getCheckNumber());
				stmt.setDate(4, new java.sql.Date(item.getCheckDate().getTime()));
				stmt.setString(5, item.getPaymentType());
				stmt.setDouble(6, item.getDepositAmount());
				stmt.setDouble(7, item.getPaymentAmount());
				stmt.setString(8, item.getComments());
			}
		});
	}

}
 

7.接口 LedgerDao .java

 

 

package net.etongbao.vasp.ac.dao;

import net.etongbao.vasp.ac.pojo.Ledger;

public interface LedgerDao {
	public void save(final Ledger item) ;
}

 

 8. JdbcTemplete 需要的LedgerRowMapper.java

  package net.etongbao.vasp.ac.batch.writer;

import java.sql.ResultSet;
import java.sql.SQLException;

import net.etongbao.vasp.ac.pojo.Ledger;

import org.springframework.jdbc.core.RowMapper;
import org.springframework.stereotype.Component;
 
/**
 * ledger行的映射类
 * @author Administrator
 *
 */
@Component("ledgerRowMapper")
public class LedgerRowMapper implements RowMapper {
	public Object mapRow(ResultSet rs, int rowNum) throws SQLException {
		Ledger ledger = new Ledger();
		ledger.setId(rs.getInt("id"));
		ledger.setReceiptDate(rs.getDate("rcv_dt"));
		ledger.setMemberName(rs.getString("mbr_nm"));
		ledger.setCheckNumber(rs.getString("chk_nbr"));
		ledger.setCheckDate(rs.getDate("chk_dt"));
		ledger.setPaymentType(rs.getString("pymt_typ"));
		ledger.setDepositAmount(rs.getDouble("dpst_amt"));
		ledger.setPaymentAmount(rs.getDouble("pymt_amt"));
		ledger.setComments(rs.getString("comments"));
		return ledger;
	}
}

 

9.关键类LedgerWriter.java ，写入数据，负责数据的添加 

 

package net.etongbao.vasp.ac.batch.writer;

import java.util.List;

import net.etongbao.vasp.ac.dao.LedgerDao;
import net.etongbao.vasp.ac.pojo.Ledger;

import org.springframework.batch.item.ItemWriter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

/**
 * ledger写入数据
 * 
 * @author Fu Wei
 * 
 */
@Component("ledgerWriter")
public class LedgerWriter implements ItemWriter<Ledger> {

	@Autowired
	private LedgerDao ledgerDao;

	/**
	 * 写入数据
	 * 
	 * @param ledgers
	 */
	public void write(List<? extends Ledger> ledgers) throws Exception {
		for (Ledger ledger : ledgers) {
			ledgerDao.save(ledger);
		}
	}

}

 

 

 classPath:

 <?xml version="1.0" encoding="UTF-8"?>

<classpath>
	<classpathentry kind="src" path="src"/>
	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/jrockit-jdk1.6.0_24-R28.1.3-4.0.1"/>
	<classpathentry kind="lib" path="lib/aopalliance-1.0.jar"/>
	<classpathentry kind="lib" path="lib/c3p0-0.9.1.2.jar"/>
	<classpathentry kind="lib" path="lib/commons-collections-3.2.1.jar"/>
	<classpathentry kind="lib" path="lib/commons-lang-2.3.jar"/>
	<classpathentry kind="lib" path="lib/commons-logging-1.1.1.jar"/>
	<classpathentry kind="lib" path="lib/etb-log4j-1.2.16.jar"/>
	<classpathentry kind="lib" path="lib/etb-slf4j-api-1.5.8.jar"/>
	<classpathentry kind="lib" path="lib/etb-slf4j-log4j12-1.5.8.jar"/>
	<classpathentry kind="lib" path="lib/ojdbc6.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.aop-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.asm-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.aspects-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.beans-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.context-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.context.support-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.core-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.expression-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.instrument-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.instrument.tomcat-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.jdbc-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.jms-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.orm-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.oxm-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.test-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/org.springframework.transaction-3.0.5.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/quartz-all-1.6.5.jar"/>
	<classpathentry kind="lib" path="lib/spring-batch-core-2.1.6.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/spring-batch-infrastructure-2.1.6.RELEASE.jar"/>
	<classpathentry kind="lib" path="lib/spring-batch-test-2.1.6.RELEASE.jar"/>
	<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/4"/>
	<classpathentry kind="output" path="bin"/>
</classpath>
 

 

  总结: 测试数据8万多条，响应时间3分多钟。

 

关键在于quartz-context.xml 中<bean id="ledgerReader"

class="org.springframework.batch.item.database.JdbcCursorItemReader">

<property name="dataSource" ref="dataSource" />

<property name="sql" value="select * from ledger" /> 

<property name="rowMapper" ref="ledgerRowMapper" />

</bean> 负责读取数据 ，在程序执行时一次性抓取全部数据后在批量的交给LedgerWriter进行写操作。当然也可以使用分页读取JdbcPagingItemReader，但要分页数量与写入数量要大写相同，还可以对分页出来的数据进行添加悲观锁

LedgerWriter.java 负责写入数据，每次写入1000条。

 

 

 

 

 

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