Question

我必须使用JDBI进行批量更新，就像批量插入一样创建对象。任何人都知道这个过程请告诉我。请记住不要使用像映射列这样的对象到对象的属性

Answer 1

以下是使用JDBI和MySQL数据库进行批处理操作的简单示例。该表是InnoDB类型。

package com.zetcode;

import org.skife.jdbi.v2.Batch;
import org.skife.jdbi.v2.DBI;
import org.skife.jdbi.v2.Handle;

public class JDBIEx6 {

    public static void main(String[] args) {

        DBI dbi = new DBI("jdbc:mysql://localhost:3306/testdb",
                "testuser", "test623");

        Handle handle = dbi.open();
        Batch batch = handle.createBatch();

        batch.add("DROP TABLE IF EXISTS Friends");
        batch.add("CREATE TABLE Friends(Id INT AUTO_INCREMENT PRIMARY KEY, Name TEXT)");
        batch.add("INSERT INTO Friends(Name) VALUES ('Monika')");
        batch.add("INSERT INTO Friends(Name) VALUES ('Tom')");
        batch.add("INSERT INTO Friends(Name) VALUES ('Jane')");
        batch.add("INSERT INTO Friends(Name) VALUES ('Robert')");

        batch.execute();
    }
}

以下是该项目的Maven 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">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.zetcode</groupId>
    <artifactId>JDBIEx6</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.jdbi</groupId>
            <artifactId>jdbi</artifactId>
            <version>2.73</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.39</version>
        </dependency>

    </dependencies>    
</project>

您可以从我的tutorial了解有关JDBI的更多信息。

Answer 2

使用参数绑定。也许这就是你要找的东西？

PreparedBatch insertBatch = handle.prepareBatch("INSERT INTO foo.bar (baz) VALUES (:bazArgument)");

//assume what you want to insert is stored in a List<String> bazes
for (String st : bazes) {
  insertBatch.bind("bazArgument", st).add();
}

int[] countArray = insertBatch.execute();

你可以扩展它以获得更多变量等。

JDBI我想使用诸如批量插入和创建对象之类的东西进行批量更新

2 个答案: