Java：SpringBoot中HttpServletRequest对象获取客户端的请求参数

文档

https://docs.oracle.com/javaee/6/api/javax/servlet/http/HttpServletRequest.html

代码示例

package com.example.demo.controller;import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;import javax.servlet.http.HttpServletRequest;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;@RestController
public class IndexController {@GetMapping("/getDeviceInfo")public Map<String, Object> getDeviceInfo(HttpServletRequest request){Map<String, Object> map = new HashMap<>();// headersMap<String, Object> headers = new HashMap<>();Enumeration<String> headerNames = request.getHeaderNames();while (headerNames.hasMoreElements()){String headerName = headerNames.nextElement();String header = request.getHeader(headerName);headers.put(headerName, header);}map.put("headers", headers);// servletPathString servletPath = request.getServletPath();map.put("servletPath", servletPath);// contextPathString contextPath = request.getContextPath();map.put("contextPath", contextPath);// methodString method = request.getMethod();map.put("method", method);// pathInfoString pathInfo = request.getPathInfo();map.put("pathInfo", pathInfo);// requestedSessionIdString requestedSessionId = request.getRequestedSessionId();map.put("requestedSessionId", requestedSessionId);// queryStringString queryString = request.getQueryString();map.put("queryString", queryString);// requestURIString requestURI = request.getRequestURI();map.put("requestURI", requestURI);// requestURLStringBuffer requestURL = request.getRequestURL();map.put("requestURL", requestURL);// protocolString protocol = request.getProtocol();map.put("protocol", protocol);// parameterMapMap<String, String> parameterMap= new HashMap<>();Enumeration<String> parameterNames = request.getParameterNames();while (parameterNames.hasMoreElements()){String parameterName = parameterNames.nextElement();String parameterValue = request.getParameter(parameterName);parameterMap.put(parameterName, parameterValue);}map.put("parameterMap", parameterMap);// remoteAddrString remoteAddr = request.getRemoteAddr();map.put("remoteAddr", remoteAddr);// remoteHostString remoteHost = request.getRemoteHost();map.put("remoteHost", remoteHost);// remotePortint remotePort = request.getRemotePort();map.put("remotePort", remotePort);// localAddrString localAddr = request.getLocalAddr();map.put("localAddr", localAddr);// localNameString localName = request.getLocalName();map.put("localName", localName);// localPortint localPort = request.getLocalPort();map.put("localPort", localPort);return map;}
}

请求地址

http://localhost:8080/getDeviceInfo?name=Tom&age=20

返回数据

{"headers": {"sec-fetch-mode": "navigate","sec-fetch-site": "none","accept-language": "zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7,ja;q=0.6","cookie": "JSESSIONID=58B59336B8CDA4E92494C79F5E769D1A","sec-fetch-user": "?1","accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7","sec-ch-ua": "\"Chromium\";v=\"116\", \"Not)A;Brand\";v=\"24\", \"Google Chrome\";v=\"116\"","sec-ch-ua-mobile": "?0","sec-ch-ua-platform": "\"macOS\"","host": "localhost:8080","upgrade-insecure-requests": "1","connection": "keep-alive","cache-control": "max-age=0","accept-encoding": "gzip, deflate, br","user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36","sec-fetch-dest": "document"},"method": "GET","localPort": 8080,"remoteHost": "0:0:0:0:0:0:0:1","contextPath": "","remotePort": 55266,"requestURI": "/getDeviceInfo","queryString": "name=Tom&age=20","localName": "localhost","protocol": "HTTP/1.1","requestURL": "http://localhost:8080/getDeviceInfo","servletPath": "/getDeviceInfo","requestedSessionId": "58B59336B8CDA4E92494C79F5E769D1A","pathInfo": null,"parameterMap": {"name": "Tom","age": "20"},"localAddr": "0:0:0:0:0:0:0:1","remoteAddr": "0:0:0:0:0:0:0:1"
}