两个服务器之间互相传输数据

服务器获取另一个服务器上的文件和上传文件到服务器
纯属工作笔记，写的不好，请看过的留下评论，多多指教！
获取服务器数据

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class PdfConvertUtil {
    // 连接URL获取接口返回的数据
    public static void pdfToHtml(String urls, String txtpath) {
        HttpURLConnection httpurl = null;
        InputStream in = null;
        FileOutputStream fos = null;
        try {
            URL url = new URL(urls);
            httpurl = (HttpURLConnection) url.openConnection();
            // 设置超时
            httpurl.setConnectTimeout(1000 * 5);
            // 设置请求方式，默认是GET
            httpurl.setRequestMethod("GET");
            // 设置字符编码
            httpurl.setRequestProperty("Charset", "UTF-8");
            // 打开到此 URL引用的资源的通信链接
            httpurl.connect();
            in = httpurl.getInputStream();
            fos = new FileOutputStream(new File(txtpath));
            int len = 0;
            byte[] b = new byte[1024];
            while ((len = in.read(b)) != -1) {
                fos.write(b, 0, len);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } catch (org.w3c.dom.ls.LSException e) {
            e.printStackTrace();
        } catch (UnsupportedOperationException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (httpurl != null) {
                    httpurl.disconnect();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            try {
                if (in != null) {
                    in.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                if (fos != null) {
                    fos.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

向服务器上传文件

/**
     * 向服务器上传文件
     * @param text
     * @return
     */
    public boolean setURL(String text,String urls) {
        URL url = null;
        HttpURLConnection httpUrlConnection = null;
        OutputStreamWriter writer = null;
        try {
            url = new URL(urls);
            httpUrlConnection = (HttpURLConnection) url.openConnection();
            //设置超时
            httpUrlConnection.setConnectTimeout(1000 * 10);
            //请求方式
            httpUrlConnection.setRequestMethod("POST");
            //设置请求头和编码
            httpUrlConnection.setRequestProperty("Content-Type",
            "application/json;charset=UTF-8");
            httpUrlConnection.setDoOutput(true);
            httpUrlConnection.setUseCaches(false);
            httpUrlConnection.connect();
            OutputStream out = httpUrlConnection.getOutputStream();
            writer = new OutputStreamWriter(out, "utf-8");
            writer.write(text);
            writer.flush();
            int code = httpUrlConnection.getResponseCode();
            if(code == 200){
                return true;
            }
            
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (ProtocolException e) {
            e.printStackTrace();
        } 
        catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (writer != null) {
                    writer.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                if (httpUrlConnection != null) {
                    httpUrlConnection.disconnect();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return false;
    }

`服务器端接收文件

@PostMapping("???")
    public AjaxResult getReceiveContent(@RequestBody String text) {
        //IP白名单验证
        IpUtils.checkWhiteIp();
        String attachmentid = null;
        try {
        //将接收到的数据存入附件表中
            attachmentid = attachmentService.uploadTxt(text);
            return AjaxResult.success(attachmentid);
        } catch (IOException e) {
            return AjaxResult.error();
        }

服务器IP白名单验证

public static void checkWhiteIp() {
        
        HttpServletRequest request = ServletUtils.getRequest();
        // 请求的地址
        String IP = IpUtils.getIpAddr(request);
        
        //System.out.println("############ip:"+IP);
        
        if(!SpringUtils.getBean(HZBSConfig.class).containsIp(IP)) {
            
            throw new CustomException("not in white ip list");
            
        }
    }

获取IP

public static String getIpAddr(HttpServletRequest request)
    {
        if (request == null)
        {
            return "unknown";
        }
        String ip = request.getHeader("x-forwarded-for");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
        {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
        {
            ip = request.getHeader("X-Forwarded-For");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
        {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
        {
            ip = request.getHeader("X-Real-IP");
        }

        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))
        {
            ip = request.getRemoteAddr();
        }

        return "0:0:0:0:0:0:0:1".equals(ip) ? "127.0.0.1" : ip;
    }

基本上整个接收文件和上传文件的流程就是这样的