1.Doris官网

Doris官网https://doris.apache.org/

2.根本原因

本地idea访问FE，FE会返回BE的地址，但是在服务器上通过ip addr查看，发现只有局域网IP，所以FE返回了局域网的IP，导致idea连接不上BE

3.解决办法

重写BackendV2类，返回公网IP即可。

在项目下新建包名

org.apache.doris.flink.rest.models

然后放入 BackendV2类

package org.apache.doris.flink.rest.models;

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonProperty;

import java.util.List;

/**
 * @Project_Name:Realtime
 * @Package_Name:org.apache.doris.flink.rest.models
 * @Class_Name:BackendV2
 * @Auther:zhang pengyun
 * @Date:2023-07-25 21:06
 * @Description:
 */
@JsonIgnoreProperties(ignoreUnknown = true)
public class BackendV2 {

    @JsonProperty(value = "backends")
    private List<BackendRowV2> backends;

    public List<BackendRowV2> getBackends() {
        return backends;
    }

    public void setBackends(List<BackendRowV2> backends) {
        this.backends = backends;
    }

    public static class BackendRowV2 {
        public String ip;
        public int http_port;
        public boolean is_alive;

        public String getIp() {
            return ip;
        }

        public void setIp(String ip) {
            this.ip = ip;
        }

        public int getHttpPort() {
            return http_port;
        }

        public void setHttpPort(int httpPort) {
            this.http_port = httpPort;
        }

        public boolean isAlive() {
            return is_alive;
        }

        public void setAlive(boolean alive) {
            is_alive = alive;
        }

        public String toBackendString(){
            return "47.92.168.70" + ":" + http_port;
        }

    }
}

然后重写修改toBackendString()方法，将公网IP写死返回，如果有多个BE，可以通过判断ip属性的值，动态返回。