一、创建文件

例如在D盘下创建1.txt，里边写入内容

2、传送方代码实现



import org.springframework.core.io.FileSystemResource;
import org.springframework.http.*;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.io.File;

/**
 * Created by HJ 
 */
@RestController
@RequestMapping("/send")
public class test {

    @GetMapping("/sendFile")
    public   ResponseEntity<String>  sendFile( ){
        //接口地址
        String remote_url="http://localhost:8081/receiv/receivFile";
        File file=new File("D:\\1.txt");
         RestTemplate restTemplate = new RestTemplate();
        MultiValueMap<String, Object> body = new LinkedMultiValueMap<>();
        body.add("file", new FileSystemResource(new File("D:\\1.txt")));
        Student student= new Student(1,"张三",12);
        body.add("student",student);
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.MULTIPART_FORM_DATA);
        HttpEntity<MultiValueMap<String, Object>> requestEntity = new HttpEntity<>(body, headers);
         ResponseEntity<String> response = restTemplate.exchange(remote_url, HttpMethod.POST, requestEntity, String.class);

        return response;
    }
    static class Student {
        private int id;
        private String name;
        private int age;
        public Student(int id,String name,int age){
            this.id=id;
            this.name=name;
            this.age=age;
        }
        public Student(){

        }
        public int getId(){
            return id;
        }
        public String getName(){
            return name;
        }
        public int getAge(){
            return age;
        }
        @Override
        public String toString(){
            return id+" "+name+" "+age;
        }
        public void setId(int id){
            this.id=id;
        }
        public void setName(String name){
            this.name=name;
        }
        public void setAge(int age){
            this.age=age;
        }  }

}

3.接收方代码实现


import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestPart;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;

/**
 * Created by HJ
 */
@RestController
@RequestMapping("/receiv")
public class testb {
    @RequestMapping(value = "/receivFile", method = RequestMethod.POST)
    public String receivFile(@RequestPart("file") MultipartFile file,
                                      @RequestPart("student") Student student) throws IOException {
        byte[] bytes = file.getBytes();
        String s = new String(bytes);
        //InputStream inputStream=file.getInputStream();
        System.out.println("文件内容为:"+s);
        System.out.println("文件名称："+file.getOriginalFilename());
        System.out.println("对象内容："+student.toString());
         return "对接成功";

    }
    static class Student {
        private int id;
        private String name;
        private int age;
        public Student(int id,String name,int age){
            this.id=id;
            this.name=name;
            this.age=age;
        }
        public Student(){

        }
        public int getId(){
            return id;
        }
        public String getName(){
            return name;
        }
        public int getAge(){
            return age;
        }
        @Override
        public String toString(){
            return "id:"+id+"  name: "+name+"  age:"+age;
        }
        public void setId(int id){
            this.id=id;
        }
        public void setName(String name){
            this.name=name;
        }
        public void setAge(int age){
            this.age=age;
        }  }
}