open-JSD-8146/src/main/java/com/fr/plugin/sso/utils/HttpRequest.java

package com.fr.plugin.sso.utils;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;


/**
 * http请求工具类，为支持jdk1.4,不使用泛型
 *
 * @author
 */
public class HttpRequest {

    /**
     * 向指定 URL 发送POST方法的请求
     *
     * @param fullurl 完整的URL，可能包括一些参数如 ?a=B&c=D
     * @return 所代表远程资源的响应结果
     */
    public static String sendGet(String fullurl) {
        StringBuffer result = new StringBuffer();
        BufferedReader in = null;
        try {
            String urlNameString = fullurl;
            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
            //connection.setRequestProperty("accept", "*/*");
            //connection.setRequestProperty("connection", "Keep-Alive");
            //connection.setRequestProperty("user-agent",
            //	"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");

            //	connection.setRequestProperty("Authorization", "Basic "+base64(user, password));

            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
            Map map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            //for (String key : map.keySet()) {
            //	System.out.println(key + "--->" + map.get(key));
            //}
            // 定义 BufferedReader输入流来读取URL的响应

            in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));
            String line;
            while ((line = in.readLine()) != null) {
                result.append(line);
            }
        } catch (Exception e) {
            System.err.println("发送GET请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result.toString();
    }

    /**
     * 向指定 URL 发送POST方法的请求
     *
     * @param url    发送请求的 URL
     * @param params 请求参数
     * @return 所代表远程资源的响应结果
     */
    public static String sendPost(String url, HashMap params) {
        PrintWriter out = null;
        BufferedReader in = null;
        StringBuffer result = new StringBuffer();

        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
//			connection.setRequestProperty("accept", "*/*");
//			connection.setRequestProperty("connection", "Keep-Alive");
//			connection.setRequestProperty("user-agent",
//					"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");

            //	connection.setRequestProperty("Authorization", "Basic "+base64(user, password));
            connection.setRequestProperty("Accept-Charset", "utf-8");
            connection.setRequestProperty("contentType", "utf-8");

            // 发送POST请求必须设置如下两行
            connection.setDoOutput(true);
            connection.setDoInput(true);
            // 获取URLConnection对象对应的输出流

            out = new PrintWriter(connection.getOutputStream());
            // 发送请求参数
            StringBuffer param = new StringBuffer();
            for (Iterator iterator = params.keySet().iterator(); iterator.hasNext(); ) {
                String key = (String) iterator.next();

                Object obj = params.get(key);

                if (obj == null) continue;

                if (obj.getClass().isArray()) {
                    //数组的处理方式
                    Object[] objs = (Object[]) obj;

                    for (int i = 0; i < objs.length; i++) {
                        param.append(key).append("=").append(objs[i]);

                        param.append("&");
                    }
                } else {
                    param.append(key).append("=").append(obj);
                    param.append("&");
                }

            }
            out.print(param.toString());
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));

            String line;
            while ((line = in.readLine()) != null) {
                //result += line;
                result.append(line);
            }
        } catch (Exception e) {
            System.err.println("发送 POST 请求出现异常！" + e);
            e.printStackTrace();

            return "{\"success\": false, \"message\": \"" + e.getMessage() + "\" }";
        }
        // 使用finally块来关闭输出流、输入流
        finally {
            try {
                if (out != null) {
                    out.close();
                }
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }

        return result.toString();
    }
}