java模拟get/post提交

1:用jdk连接

String action = "xxxxxxxxxxx"；
		URL url = new URL(action);
		HttpURLConnection http = (HttpURLConnection) url.openConnection();
		http.setRequestMethod("POST");
		http.setConnectTimeout(0);
		http.setInstanceFollowRedirects(true);
		http.setRequestProperty("Content-Type",
				"application/x-www-form-urlencoded");
		http.setDefaultUseCaches(false);
		http.setDoOutput(true);

		String queryString = "";
		PrintWriter out = new PrintWriter(http.getOutputStream());
		out.print(queryString);//传入参数
		out.close();
http.connect();//连接
InputStream in = httpURLConnection.getInputStream();

2:apache组件

1. import java.io.BufferedReader;
2. import java.io.IOException;
3. import java.io.InputStreamReader;
4. import java.util.Map;
5. import org.apache.commons.httpclient.HttpClient;
6. import org.apache.commons.httpclient.HttpMethod;
7. import org.apache.commons.httpclient.HttpStatus;
8. import org.apache.commons.httpclient.URIException;
9. import org.apache.commons.httpclient.methods.GetMethod;
10. import org.apache.commons.httpclient.methods.PostMethod;
11. import org.apache.commons.httpclient.params.HttpMethodParams;
12. import org.apache.commons.httpclient.util.URIUtil;
13. /**
14. *
15. *
16. * <p>Title:HttpTookitEnhance</p>
17. * <p>Description: httpclient模拟http请求，解决返回内容乱码问题</p>
18. * <p>Copyright: Copyright (c) 2010</p>
19. * <p>Company: </p>
20. * @author libin
21. * @version 1.0.0
22. */
23. public class HttpTookitEnhance
24. {
25. /**
26. * 执行一个HTTP GET请求，返回请求响应的HTML
27. *
28. * @param url                 请求的URL地址
29. * @param queryString 请求的查询参数,可以为null
30. * @param charset         字符集
31. * @param pretty            是否美化
32. * @return 返回请求响应的HTML
33. */
34. public static String doGet ( String url, String queryString, String charset, boolean pretty )
35. {
36. StringBuffer response = new StringBuffer();
37. HttpClient client = new HttpClient();
38. GetMethodmethod = new GetMethod(url);
39. try
40. {
41. if ( queryString != null && !queryString.equals("") )
42. //对get请求参数做了http请求默认编码，好像没有任何问题，汉字编码后，就成为%式样的字符串
43. method.setQueryString(URIUtil.encodeQuery(queryString));
44. client.executeMethod(method);
45. if ( method.getStatusCode() == HttpStatus.SC_OK )
46. {
47. BufferedReader reader = new BufferedReader(new InputStreamReader(method.getResponseBodyAsStream(), charset));
48. String line;
49. while ( ( line = reader.readLine() ) != null )
50. {
51. if ( pretty )
52. response.append(line).append(System.getProperty("line.separator"));
53. else
54. response.append(line);
55. }
56. reader.close();
57. }
58. }
59. catch ( URIException e )
60. {
61. }
62. catch ( IOException e )
63. {
64. }
65. finally
66. {
67. method.releaseConnection();
68. }
69. return response.toString();
70. }
71. /**
72. * 执行一个HTTP POST请求，返回请求响应的HTML
73. *
74. * @param url         请求的URL地址
75. * @param params    请求的查询参数,可以为null
76. * @param charset 字符集
77. * @param pretty    是否美化
78. * @return 返回请求响应的HTML
79. */
80. public static String doPost ( String url, Map<String, String> params, String charset, boolean pretty )
81. {
82. StringBuffer response = new StringBuffer();
83. HttpClient client = new HttpClient();
84. PostMethodmethod = new PostMethod(url);
85. //设置Http Post数据
86. if ( params != null )
87. {
88. HttpMethodParams p = new HttpMethodParams();
89. for ( Map.Entry<String, String> entry : params.entrySet() )
90. {
91. p.setParameter(entry.getKey(), entry.getValue());
92. }
93. method.setParams(p);
94. }
95. try
96. {
97. client.executeMethod(method);
98. if ( method.getStatusCode() == HttpStatus.SC_OK )
99. {
100. BufferedReader reader = new BufferedReader(new InputStreamReader(method.getResponseBodyAsStream(), charset));
101. String line;
102. while ( ( line = reader.readLine() ) != null )
103. {
104. if ( pretty )
105. response.append(line).append(System.getProperty("line.separator"));
106. else
107. response.append(line);
108. }
109. reader.close();
110. }
111. }
112. catch ( IOException e )
113. {
114. }
115. finally
116. {
117. method.releaseConnection();
118. }
119. return response.toString();
120. }
121. public static void main ( String [] args )
122. {
123. String y = doGet("http://video.sina.com.cn/life/tips.html", null, "GBK", true);
124. System.out.println(y);
125. }
126. }