1.Mysql-udf-http镜像已上传到dockerhub中

docker pull heidaodageshiwo/mysql-udf-http:v1

2.启动镜像(默认密码root1234)

docker run -tid -p 3306:3306 --name=mysql-udf-http --privileged=true heidaodageshiwo/mysql-udf-http:v1

3.命令

[root@localhost ~]# docker images
REPOSITORY                       TAG       IMAGE ID       CREATED         SIZE
heidaodageshiwo/mysql-udf-http   v1        fc2684ea3cec   11 months ago   5.36GB
[root@localhost ~]# docker start mysql
mysql
[root@localhost ~]# docker ps
CONTAINER ID   IMAGE               COMMAND            CREATED       STATUS         PORTS                                                 NAMES
e55e89d35e01   mysql-udf-http:v1   "/usr/sbin/init"   10 days ago   Up 2 seconds   0.0.0.0:3306->3306/tcp, :::3306->3306/tcp, 9001/tcp   mysql
[root@localhost ~]# ^C
[root@localhost ~]#

4.连接：root/root1234

5.运行

SELECT http_post('http://192.168.101.9:8054/udf/test2','a=xoyo333&b=0111111');  

192.168.101.9：机器ip地址 8054项目端口  udf/test2接口  a=xoyo333&b=0111111入参

6.java代码：

controller

@RequestMapping("/udf")
@RestController
public class MysqlUdfHttpController {
    @Resource
    UdfMapper udfMapper;

    @RequestMapping("/test2")
    public String getMenuList12(String a,String b) {
        return a+b;
    }
  @RequestMapping("/test1")
    public List<Menu> test1(@RequestParam long pid) {
        String s = udfMapper.httpGets("http://192.168.101.9:8054/udf/test11?pid=1" );
        List<Menu> menus = JSONArray.parseArray(s, Menu.class);
        return menus;
    }
    @RequestMapping("/test11")
    public List<Menu> test11(@RequestParam long pid) {
        List<Menu> menu = menuService.findMenu(pid);
        return menu;
    }


}

UdfMapper

package com.zq.mybatisexample.mapper;

import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;

@Mapper
public interface UdfMapper {
    @Select("select http_get(#{url}, #{params}) as response from dual")
    String httpGet(@Param("url") String url, @Param("params") String params);

    @Select("select http_post(#{url}, #{params}) as response from dual")
    String httpPost(@Param("url") String url, @Param("params") String params);

    @Select("select http_get(#{url}) from dual")
    String httpGets(@Param("url") String url );

}

7.测试：

navaicat中运行选择的sql即可调用到 代码中的代码：

8.例子2：实现（  请求java接口->mysql udf ->  java接口  ）

页面请求接口：http://localhost:8054/udf/test1?pid=1

解释：

页面调用：http://localhost:8054/udf/test1?pid=1

然后使用mysql udf的转发功能 

String s = udfMapper.httpGets("http://192.168.101.9:8054/udf/test11?pid=1" );

这一句作用：让mysql udf数据库去调用 

http://192.168.101.9:8054/udf/test11?pid=1  这个接口  （
可结合使用上方例子1  SELECT http_post('http://192.168.101.9:8054/udf/test2','a=vvv&b=aaaaa');   
来理解即可
）

然后test11接口返回数据即可。