springboot 接入hadoop

1. 首先需要在pom.xml文件中添加以下依赖：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter</artifactId>
</dependency>

<dependency>
    <groupId>org.apache.spark</groupId>
    <artifactId>spark-core_2.11</artifactId>
    <version>2.4.5</version>
</dependency>

<dependency>
    <groupId>org.apache.hadoop</groupId>
    <artifactId>hadoop-common</artifactId>
    <version>2.7.7</version>
</dependency>

<dependency>
    <groupId>org.apache.hadoop</groupId>
    <artifactId>hadoop-hdfs</artifactId>
    <version>2.7.7</version>
</dependency>

2. 在application.properties文件中添加以下配置：

# Spark配置
spark.master=local[*]
spark.app.name=MyApp

# Hadoop配置
fs.defaultFS=hdfs://localhost:9000

3. 在代码中使用Spark和Hadoop：

// Spark
SparkConf conf = new SparkConf().setAppName("MyApp").setMaster("local[*]");
JavaSparkContext sc = new JavaSparkContext(conf);

// Hadoop
Configuration conf = new Configuration();
conf.set("fs.defaultFS", "hdfs://localhost:9000");
FileSystem fs = FileSystem.get(conf);

以上就是使用Spring Boot、Spark和Hadoop的环境配置。