HttpUtil工具示例（GET、POST请求）&IP工具&根据token获取用户信息工具

HttpUtil工具示例（GET、POST请求） 

import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

public class HttpUtil {

    public static String sendGet(String url, Map params, Map header) throws Exception {
        HttpGet httpGet = null;
        String body = "";
        try {
            CloseableHttpClient httpClient = HttpClients.createDefault();
            List mapList = new ArrayList<>();
            if (params != null) {
                for (Entry entry : params.entrySet()) {
                    mapList.add(entry.getKey() + "=" + entry.getValue());
                }
            }
            if (CollectionUtils.isNotEmpty(mapList)) {
                url = url + "?";
                String paramsStr = StringUtils.join(mapList, "&");
                url = url + paramsStr;
            }
            httpGet = new HttpGet(url);
            httpGet.setHeader("Content-type", "application/json; charset=utf-8");
            httpGet.setHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            if (header != null) {
                for (Entry entry : header.entrySet()) {
                    httpGet.setHeader(entry.getKey(), entry.getValue());
                }
            }
            HttpResponse response = httpClient.execute(httpGet);

            int statusCode = response.getStatusLine().getStatusCode();
            if (statusCode != HttpStatus.SC_OK) {
                throw new RuntimeException("请求失败");
            } else {
                body = EntityUtils.toString(response.getEntity(), "UTF-8");
            }
        } catch (Exception e) {
            throw e;
        } finally {
            if (httpGet != null) {
                httpGet.releaseConnection();
            }
        }
        return body;
    }

    public static String sendPostJson(String url, String json, Map header) throws Exception {
        HttpPost httpPost = null;
        String body = "";
        try {
            CloseableHttpClient httpClient = HttpClients.createDefault();
            httpPost = new HttpPost(url);
            httpPost.setHeader("Content-type", "application/json; charset=utf-8");
            httpPost.setHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            if (header != null) {
                for (Entry entry : header.entrySet()) {
                    httpPost.setHeader(entry.getKey(), entry.getValue());
                }
            }
            StringEntity entity = new StringEntity(json, Charset.forName("UTF-8"));
            entity.setContentEncoding("UTF-8");
            entity.setContentType("application/json");
            httpPost.setEntity(entity);
            HttpResponse response = httpClient.execute(httpPost);

            int statusCode = response.getStatusLine().getStatusCode();
            if (statusCode != HttpStatus.SC_OK) {
                throw new RuntimeException("请求失败");
            } else {
                body = EntityUtils.toString(response.getEntity(), "UTF-8");
            }
        } catch (Exception e) {
            throw e;
        } finally {
            if (httpPost != null) {
                httpPost.releaseConnection();
            }
        }
        return body;
    }

    public static String sendPostForm(String url, Map params, Map header) throws Exception {
        HttpPost httpPost = null;
        String body = "";
        try {
            CloseableHttpClient httpClient = HttpClients.createDefault();
            httpPost = new HttpPost(url);
            httpPost.setHeader("Content-type", "application/x-www-form-urlencoded");
            httpPost.setHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            if (header != null) {
                for (Entry entry : header.entrySet()) {
                    httpPost.setHeader(entry.getKey(), entry.getValue());
                }
            }
            List nvps = new ArrayList<>();
            if (params != null) {
                for (Entry entry : params.entrySet()) {
                    nvps.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
                }
            }
            //设置参数到请求对象中
            httpPost.setEntity(new UrlEncodedFormEntity(nvps, "UTF-8"));
            HttpResponse response = httpClient.execute(httpPost);

            int statusCode = response.getStatusLine().getStatusCode();
            if (statusCode != HttpStatus.SC_OK) {
                throw new RuntimeException("请求失败");
            } else {
                body = EntityUtils.toString(response.getEntity(), "UTF-8");
            }
        } catch (Exception e) {
            throw e;
        } finally {
            if (httpPost != null) {
                httpPost.releaseConnection();
            }
        }
        return body;
    }

}

import org.apache.http.NameValuePair;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

@Service
public class HttpAPIService {
 
    @Autowired
    private CloseableHttpClient httpClient;
 
    @Autowired
    private RequestConfig config;
 
 
    /**
     * 不带参数的get请求，如果状态码为200，则返回body，如果不为200，则返回null
     * 
     * @param url
     * @return
     * @throws Exception
     */
    public String doGet(String url) throws Exception {
        // 声明 http get 请求
        HttpGet httpGet = new HttpGet(url);
 
        // 装载配置信息
        httpGet.setConfig(config);
 
        // 发起请求
        CloseableHttpResponse response = this.httpClient.execute(httpGet);
 
        // 判断状态码是否为200
        if (response.getStatusLine().getStatusCode() == 200) {
            // 返回响应体的内容
            return EntityUtils.toString(response.getEntity(), "UTF-8");
        }
        return null;
    }
 
    /**
     * 带参数的get请求，如果状态码为200，则返回body，如果不为200，则返回null
     * 
     * @param url
     * @return
     * @throws Exception
     */
    public String doGet(String url, Map map) throws Exception {
        URIBuilder uriBuilder = new URIBuilder(url);
 
        if (map != null) {
            // 遍历map,拼接请求参数
            for (Map.Entry entry : map.entrySet()) {
                uriBuilder.setParameter(entry.getKey(), entry.getValue().toString());
            }
        }
 
        // 调用不带参数的get请求
        return this.doGet(uriBuilder.build().toString());
 
    }
 
    /**
     * 带参数的post请求
     * 
     * @param url
     * @param map
     * @return
     * @throws Exception
     */
    public HttpResult doPost(String url, Map map) throws Exception {
        // 声明httpPost请求
        HttpPost httpPost = new HttpPost(url);
        // 加入配置信息
        httpPost.setConfig(config);
 
        // 判断map是否为空，不为空则进行遍历，封装from表单对象
        if (map != null) {
            List list = new ArrayList();
            for (Map.Entry entry : map.entrySet()) {
                list.add(new BasicNameValuePair(entry.getKey(), entry.getValue().toString()));
            }
            // 构造from表单对象
            UrlEncodedFormEntity urlEncodedFormEntity = new UrlEncodedFormEntity(list, "UTF-8");
 
            // 把表单放到post里
            httpPost.setEntity(urlEncodedFormEntity);
        }
 
        // 发起请求
        CloseableHttpResponse response = this.httpClient.execute(httpPost);
        return new HttpResult(response.getStatusLine().getStatusCode(), EntityUtils.toString(
                response.getEntity(), "UTF-8"));
    }
 
    /**
     * 不带参数post请求
     * 
     * @param url
     * @return
     * @throws Exception
     */
    public HttpResult doPost(String url) throws Exception {
        return this.doPost(url, null);
    }
}

IP工具

public class IPUtil {
    public static final String IP_URL = "http://ip.taobao.com/service/getIpInfo.php";

    public static String getLocalHostIP() {
        // 本地IP，如果没有配置外网IP则返回它
        String localIp = null;
        // 外网IP
        String netIp = null;
        try {
            Enumeration netInterfaces = NetworkInterface.getNetworkInterfaces();
            InetAddress ip = null;
            // 是否找到外网IP
            boolean finded = false;
            while (netInterfaces.hasMoreElements() && ! finded) {
                NetworkInterface ni = netInterfaces.nextElement();
                Enumeration address = ni.getInetAddresses();
                while (address.hasMoreElements()) {
                    ip = address.nextElement();
                    // 外网IP
                    if (! ip.isSiteLocalAddress() && ! ip.isLoopbackAddress() && ip.getHostAddress().indexOf(":") == - 1) {
                        netIp = ip.getHostAddress();
                        finded = true;
                        break;
                    } else if (ip.isSiteLocalAddress() && ! ip.isLoopbackAddress() && ip.getHostAddress().indexOf(":") == - 1) {
                        // 内网IP
                        localIp = ip.getHostAddress();
                    }
                }
            }
        } catch (SocketException e) {
            e.getMessage();
        }
        if (netIp != null && ! "".equals(netIp)) {
            return netIp;
        } else {
            return localIp;
        }
    }

    public static String getRemoteIp(HttpServletRequest request) {
        // 获取请求主机IP地址,如果通过代理进来，则透过防火墙获取真实IP地址

        String ip = getXForwardedForIp(request);
        if (ipValid(ip)) {
            return realIp(ip);
        }
        ip = request.getHeader("Proxy-Client-IP");
        if (ipValid(ip)) {
            return realIp(ip);
        }
        ip = request.getHeader("HTTP_CLIENT_IP");
        if (ipValid(ip)) {
            return realIp(ip);
        }
        ip = request.getHeader("HTTP_X_FORWARDED_FOR");
        if (ipValid(ip)) {
            return realIp(ip);
        }

        ip = request.getRemoteAddr();
        return realIp(ip);
    }

    private static String getXForwardedForIp(HttpServletRequest request) {
        String ip = request.getHeader("x-forwarded-for");
        //ip 无效直接返回
        if (! ipValid(ip)) {
            return "";
        }
        if (ip.length() > 15) {
            String[] ips = ip.split(",");
            for (String strIp : ips) {
                if (! ("unknown".equalsIgnoreCase(strIp))) {
                    ip = strIp;
                    break;
                }
            }
            return ip;
        }
        return ip;
    }

    private static Boolean ipValid(String ip) {
        if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
            return false;
        }
        return true;
    }

    private static String realIp(String ip) {
        if (StringUtils.isEmpty(ip)) {
            return "";
        }
        return "0:0:0:0:0:0:0:1".equals(ip) ? "127.0.0.1" : ip;
    }

    public static String getRemoteLocation(HttpServletRequest request) {
        String ip = getRemoteIp(request);
        return getIpLocation(ip);
    }

    public static String getIpLocation(String ip) {
        String location = "未知";
        if (StringUtils.isEmpty(ip)) {
            return location;
        }
        Map param = new HashMap<>();
        param.put("ip", ip);

        try {
            String rspStr = SmartHttpUtil.sendGet(IP_URL, param, null);
            if (StringUtils.isEmpty(rspStr)) {
                return location;
            }
            JSONObject jsonObject = JSON.parseObject(rspStr);
            String data = jsonObject.getString("data");
            JSONObject jsonData = JSON.parseObject(data);
            String region = jsonData.getString("region");
            String city = jsonData.getString("city");
            location = region + " " + city;
            if (location.contains("内网IP")) {
                location = "内网(" + ip + ")";
            }
        } catch (Exception e) {

        }
        return location;
    }
}

RequestTokenUtil

public class RequestTokenUtil {

    private static final String USER_KEY = "smart_admin_user";

    private static ThreadLocal RequestUserThreadLocal = new ThreadLocal();

    public static void setUser(HttpServletRequest request, RequestTokenBO requestToken) {
        request.setAttribute(USER_KEY, requestToken);
        RequestUserThreadLocal.set(requestToken);
    }

    public static RequestTokenBO getThreadLocalUser() {
        return RequestUserThreadLocal.get();
    }

    public static RequestTokenBO getRequestUser() {
        RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
        if (requestAttributes != null) {
            HttpServletRequest request = ((ServletRequestAttributes) requestAttributes).getRequest();
            if (request != null) {
                return (RequestTokenBO) request.getAttribute(USER_KEY);
            }
        }
        return null;
    }

    public static Long getRequestUserId() {
        RequestTokenBO requestUser = getRequestUser();
        if (null == requestUser) {
            return null;
        }
        return requestUser.getRequestUserId();
    }

}