spring-batch - 从数据库分页读取数据然后输出

最新推荐文章于 2023-07-19 15:13:59 发布

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最新推荐文章于 2023-07-19 15:13:59 发布 · 3.4k 阅读

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文章标签：

#spring #batch

本文详细介绍了使用Spring Batch进行数据库分页读取数据的配置和步骤，包括pom文件配置、Spring总配置、数据库配置、spring-batch配置、job配置、启动类、reader、Processor和writer的实现。特别提到了reader部分如何利用SqlPagingQueryProviderFactoryBean进行分页查询，并确保sortKey用于任务恢复时的正确性。

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一、pom文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>spring-batch-demo</artifactId>
        <groupId>com.joandora</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>spring-batch-integration</artifactId>
    <packaging>jar</packaging>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <spring.core.version>4.2.0.RELEASE</spring.core.version>
        <spring.data.jpa.version>1.7.1.RELEASE</spring.data.jpa.version>
        <spring.batch.version>3.0.7.RELEASE</spring.batch.version>
        <cglib.version>2.2</cglib.version>
        <aspectj.version>1.8.2</aspectj.version>
        <c3p0.version>0.9.1.2</c3p0.version>
        <querydsl.version>2.2.5</querydsl.version>
        <slf4j.version>1.7.13</slf4j.version>
        <log4j.version>1.2.17</log4j.version>
        <!-- Testing -->
        <junit.version>4.12</junit.version>
        <!-- Plugins -->
        <maven.copy.plugin.version>0.2.3</maven.copy.plugin.version>
        <maven.compiler.plugin.version>2.3.2</maven.compiler.plugin.version>
        <maven.apt.plugin.version>1.0</maven.apt.plugin.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.core.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>${spring.core.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.core.version}</version>
            <type>jar</type>
            <scope>compile</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.core.version}</version>
            <type>jar</type>
            <scope>compile</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.core.version}</version>
            <type>jar</type>
            <scope>compile</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-oxm</artifactId>
            <version>${spring.core.version}</version>
            <type>jar</type>
            <scope>compile</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>${spring.core.version}</version>
            <type>jar</type>
            <scope>compile</scope>
        </dependency>

        <!-- Spring Batch -->
        <dependency>
            <groupId>org.springframework.batch</groupId>
            <artifactId>spring-batch-core</artifactId>
            <version>${spring.batch.version}</version>
        </dependency>

        <!-- A seamless aspect-oriented extension to the Java programming language -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>${aspectj.version}</version>
        </dependency>

        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>${aspectj.version}</version>
        </dependency>

        <!-- Cglib is a powerful, high performance and quality Code Generation Library,
        It is used to extend JAVA classes and implements interfaces at runtime.  -->
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib-nodep</artifactId>
            <version>${cglib.version}&l