/**
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* Copyright (c) 2015-2016, Chill Zhuang 庄骞 (smallchill@163.com).
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* <p>
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* <p>
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* http://www.apache.org/licenses/LICENSE-2.0
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* <p>
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.dsh.guns.core.support;
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import org.springframework.web.context.request.RequestContextHolder;
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import org.springframework.web.context.request.ServletRequestAttributes;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.PrintWriter;
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import java.net.URL;
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import java.net.URLConnection;
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import java.util.Enumeration;
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import java.net.URLEncoder;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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public class HttpKit {
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public static String getIp(){
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return HttpKit.getRequest().getRemoteHost();
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}
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/**
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* 获取所有请求的值
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*/
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public static Map<String, String> getRequestParameters() {
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HashMap<String, String> values = new HashMap<>();
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HttpServletRequest request = HttpKit.getRequest();
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Enumeration enums = request.getParameterNames();
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while ( enums.hasMoreElements()){
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String paramName = (String) enums.nextElement();
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String paramValue = request.getParameter(paramName);
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values.put(paramName, paramValue);
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}
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return values;
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}
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/**
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* 获取 HttpServletRequest
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*/
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public static HttpServletResponse getResponse() {
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HttpServletResponse response = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getResponse();
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return response;
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}
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/**
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* 获取 包装防Xss Sql注入的 HttpServletRequest
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* @return request
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*/
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public static HttpServletRequest getRequest() {
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HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
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return new WafRequestWrapper(request);
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}
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/**
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* 向指定URL发送GET方法的请求
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*
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* @param url 发送请求的URL
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* @param param 请求参数
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* @return URL 所代表远程资源的响应结果
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*/
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public static String sendGet(String url, Map<String, String> param) {
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String result = "";
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BufferedReader in = null;
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try {
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StringBuffer query = new StringBuffer();
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for (Map.Entry<String, String> kv : param.entrySet()) {
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query.append(URLEncoder.encode(kv.getKey(), "UTF-8") + "=");
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query.append(URLEncoder.encode(kv.getValue(), "UTF-8") + "&");
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}
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if (query.lastIndexOf("&") > 0) {
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query.deleteCharAt(query.length() - 1);
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}
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String urlNameString = url + "?" + query.toString();
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URL realUrl = new URL(urlNameString);
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// 打开和URL之间的连接
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URLConnection connection = realUrl.openConnection();
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// 设置通用的请求属性
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connection.setRequestProperty("accept", "*/*");
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connection.setRequestProperty("connection", "Keep-Alive");
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connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
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// 建立实际的连接
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connection.connect();
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// 获取所有响应头字段
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Map<String, List<String>> map = connection.getHeaderFields();
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// 遍历所有的响应头字段
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for (String key : map.keySet()) {
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System.out.println(key + "--->" + map.get(key));
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}
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// 定义 BufferedReader输入流来读取URL的响应
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in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
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String line;
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while ((line = in.readLine()) != null) {
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result += line;
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}
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} catch (Exception e) {
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System.out.println("发送GET请求出现异常！" + e);
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e.printStackTrace();
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}
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// 使用finally块来关闭输入流
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finally {
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try {
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if (in != null) {
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in.close();
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}
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} catch (Exception e2) {
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e2.printStackTrace();
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}
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}
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return result;
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}
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/**
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* 向指定 URL 发送POST方法的请求
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*
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* @param url 发送请求的 URL
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* @param param 请求参数
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* @return 所代表远程资源的响应结果
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*/
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public static String sendPost(String url, Map<String, String> param) {
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PrintWriter out = null;
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BufferedReader in = null;
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String result = "";
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try {
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String para = "";
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for (String key : param.keySet()) {
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para += (key + "=" + param.get(key) + "&");
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}
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if (para.lastIndexOf("&") > 0) {
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para = para.substring(0, para.length() - 1);
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}
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String urlNameString = url + "?" + para;
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URL realUrl = new URL(urlNameString);
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// 打开和URL之间的连接
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URLConnection conn = realUrl.openConnection();
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// 设置通用的请求属性
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conn.setRequestProperty("accept", "*/*");
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conn.setRequestProperty("connection", "Keep-Alive");
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conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
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// 发送POST请求必须设置如下两行
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conn.setDoOutput(true);
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conn.setDoInput(true);
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// 获取URLConnection对象对应的输出流
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out = new PrintWriter(conn.getOutputStream());
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// 发送请求参数
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out.print(param);
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// flush输出流的缓冲
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out.flush();
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// 定义BufferedReader输入流来读取URL的响应
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in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
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String line;
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while ((line = in.readLine()) != null) {
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result += line;
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}
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} catch (Exception e) {
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System.out.println("发送 POST 请求出现异常！" + e);
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e.printStackTrace();
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}
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// 使用finally块来关闭输出流、输入流
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finally {
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try {
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if (out != null) {
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out.close();
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}
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if (in != null) {
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in.close();
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}
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} catch (IOException ex) {
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ex.printStackTrace();
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}
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}
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return result;
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}
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}
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