|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
package
com.lifengfeng.submitdata.utils;
import
java.io.ByteArrayOutputStream;
import
java.io.IOException;
import
java.io.InputStream;
import
java.io.OutputStream;
import
java.net.HttpURLConnection;
import
java.net.MalformedURLException;
import
java.net.URL;
import
java.net.URLConnection;
import
java.net.URLEncoder;
import
android.util.Log;
public
class
NetUtils {
private
static
final
String TAG =
"NetUtils"
;
/**
* 使用post的方式登录
* @param userName
* @param password
* @return
*/
public
static
String loginOfPost(String userName, String password) {
HttpURLConnection conn =
null
;
try
{
conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod(
"POST"
);
conn.setConnectTimeout(
10000
);
// 连接的超时时间
conn.setReadTimeout(
5000
);
// 读数据的超时时间
conn.setDoOutput(
true
);
// 必须设置此方法, 允许输出
// conn.setRequestProperty("Content-Length", 234); // 设置请求头消息, 可以设置多个
// post请求的参数
String data =
"username="
+ userName +
"&password="
+ password;
// 获得一个输出流, 用于向服务器写数据, 默认情况下, 系统不允许向服务器输出内容
OutputStream out = conn.getOutputStream();
out.write(data.getBytes());
out.flush();
out.close();
int
responseCode = conn.getResponseCode();
if
(responseCode ==
200
) {
InputStream is = conn.getInputStream();
String state = getStringFromInputStream(is);
return
state;
}
else
{
Log.i(TAG,
"访问失败: "
+ responseCode);
}
}
catch
(Exception e) {
e.printStackTrace();
}
finally
{
if
(conn !=
null
) {
conn.disconnect();
}
}
return
null
;
}
/**
* 使用get的方式登录
* @param userName
* @param password
* @return 登录的状态
*/
public
static
String loginOfGet(String userName, String password) {
HttpURLConnection conn =
null
;
try
{
String data =
"username="
+ URLEncoder.encode(userName) +
"&password="
+ URLEncoder.encode(password);
conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod(
"GET"
);
// get或者post必须得全大写
conn.setConnectTimeout(
10000
);
// 连接的超时时间
conn.setReadTimeout(
5000
);
// 读数据的超时时间
int
responseCode = conn.getResponseCode();
if
(responseCode ==
200
) {
InputStream is = conn.getInputStream();
String state = getStringFromInputStream(is);
return
state;
}
else
{
Log.i(TAG,
"访问失败: "
+ responseCode);
}
}
catch
(Exception e) {
e.printStackTrace();
}
finally
{
if
(conn !=
null
) {
conn.disconnect();
// 关闭连接
}
}
return
null
;
}
/**
* 根据流返回一个字符串信息
* @param is
* @return
* @throws IOException
*/
private
static
String getStringFromInputStream(InputStream is)
throws
IOException {
ByteArrayOutputStream baos =
new
ByteArrayOutputStream();
byte
[] buffer =
new
byte
[
1024
];
int
len = -
1
;
while
((len = is.read(buffer)) != -
1
) {
baos.write(buffer,
0
, len);
}
is.close();
String html = baos.toString();
// 把流中的数据转换成字符串, 采用的编码是: utf-8
// String html = new String(baos.toByteArray(), "GBK");
baos.close();
return
html;
}
}
|
