Spark 踩坑记录

Encoders.bean(Person.class) 调用报异常

• 异常信息

  Exception in thread "main" java.lang.UnsupportedOperationException: Cannot infer type for class personal.leo.spark.Person because it is not bean-compliant

• 原因： Bean的 getter，setter，不能使用 Builder 模式，否则会出现该错误

• 例子

  • 正常代码

    public class Person implements Serializable {
        private String name;
        private int age;
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public int getAge() {
            return age;
        }
    
        public void setAge(int age) {
            this.age = age;
        }
    }

  • 异常代码

    public class Person implements Serializable {
        private String name;
        private int age;
    
        public String getName() {
            return name;
        }
    
        public Person setName(String name) {
            this.name = name;
            return this;
        }
    
        public int getAge() {
            return age;
        }
    
        public Person setAge(int age) {
            return this;
            this.age = age;
        }
    }