1 package com.baqingshe.bjs.util;
2
3 import java.io.BufferedReader;
4
5 import java.io.IOException;
6
7 import java.io.InputStream;
8
9 import java.io.InputStreamReader;
10
11 import java.io.PrintWriter;
12
13 import java.net.URL;
14
15 import java.net.URLConnection;
16
17 import java.util.List;
18
19 import java.util.Map;
20
21 import sun.net.www.protocol.http.HttpURLConnection;
22
23 public class HttpRequest {
24
25 public static String doGet(String url) throws Exception {
26
27 URL localURL = new URL(url);
28
29 URLConnection connection = localURL.openConnection();
30
31 HttpURLConnection httpURLConnection = (HttpURLConnection)connection;
32
33
34
35 httpURLConnection.setRequestProperty("Accept-Charset", "utf-8");
36
37 httpURLConnection.setRequestProperty("Content-Type", "application/json");
38
39
40
41 InputStream inputStream = null;
42
43 InputStreamReader inputStreamReader = null;
44
45 BufferedReader reader = null;
46
47 StringBuffer resultBuffer = new StringBuffer();
48
49 String tempLine = null;
50
51
52
53 if (httpURLConnection.getResponseCode() >= 300) {
54
55 throw new Exception("HTTP Request is not success, Response code is " + httpURLConnection.getResponseCode());
56
57 }
58
59
60
61 try {
62
63 inputStream = httpURLConnection.getInputStream();
64
65 inputStreamReader = new InputStreamReader(inputStream);
66
67 reader = new BufferedReader(inputStreamReader);
68
69
70
71 while ((tempLine = reader.readLine()) != null) {
72
73 resultBuffer.append(tempLine);
74
75 }
76
77
78
79 } finally {
80
81
82
83 if (reader != null) {
84
85 reader.close();
86
87 }
88
89
90
91 if (inputStreamReader != null) {
92
93 inputStreamReader.close();
94
95 }
96
97
98
99 if (inputStream != null) {
100
101 inputStream.close();
102
103 }
104
105
106
107 }
108
109
110
111 return resultBuffer.toString();
112
113 }
114
115
116
117 public static String sendPost(String url, String param) {
118
119 PrintWriter out = null;
120
121 BufferedReader in = null;
122
123 String result = "";
124
125 try {
126
127 URL realUrl = new URL(url);
128
129 // 打开和URL之间的连接
130
131 URLConnection conn = realUrl.openConnection();
132
133 // 设置通用的请求属性
134
135 conn.setRequestProperty("accept", "*/*");
136
137 conn.setRequestProperty("connection", "Keep-Alive");
138
139 conn.setRequestProperty("user-agent",
140
141 "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
142
143 // 发送POST请求必须设置如下两行
144
145 conn.setDoOutput(true);
146
147 conn.setDoInput(true);
148
149 // 获取URLConnection对象对应的输出流
150
151 out = new PrintWriter(conn.getOutputStream());
152
153 // 发送请求参数
154
155 out.print(param);
156
157 // flush输出流的缓冲
158
159 out.flush();
160
161 // 定义BufferedReader输入流来读取URL的响应
162
163 in = new BufferedReader(
164
165 new InputStreamReader(conn.getInputStream()));
166
167 String line;
168
169 while ((line = in.readLine()) != null) {
170
171 result += line;
172
173 }
174
175 } catch (Exception e) {
176
177 System.out.println("发送 POST 请求出现异常！"+e);
178
179 e.printStackTrace();
180
181 }
182
183 //使用finally块来关闭输出流、输入流
184
185 finally{
186
187 try{
188
189 if(out!=null){
190
191 out.close();
192
193 }
194
195 if(in!=null){
196
197 in.close();
198
199 }
200
201 }
202
203 catch(IOException ex){
204
205 ex.printStackTrace();
206
207 }
208
209 }
210
211 return result;
212
213 }
214
215 }
