restTemplate上传文件

import lombok.extern.slf4j.Slf4j;
import net.go2global.common.core.bean.R;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @Author zyh
 * @Date 2020/11/12 12:30
 */
@Slf4j
@RestController
@RequestMapping("/upload")
public class UploadController {

    @Autowired
    private RestTemplate restTemplate;

    private String url="http://127.0.0.1:9004/upload/uploadFile";

    @PostMapping("/up")
    public R up(
            HttpServletRequest request,
            HttpServletResponse response,
            @RequestParam("file") MultipartFile file
    ) {

        //设置请求头
        HttpHeaders headers = new HttpHeaders();
        MediaType type = MediaType.parseMediaType("multipart/form-data");
        headers.setContentType(type);

        //设置请求体，注意是LinkedMultiValueMap
        MultiValueMap<String, Object> form = new LinkedMultiValueMap<>();
        form.add("file", file.getResource());

        //用HttpEntity封装整个请求报文
        HttpEntity<MultiValueMap<String, Object>> files = new HttpEntity<>(form, headers);

        String s = restTemplate.postForObject(url, files, String.class);

        return new R(s);
    }

}

 

本文地址：https://blog.csdn.net/zhaoyahui_666/article/details/109643227