thoerup/genericjavautils/HttpUtil.java

package dk.thoerup.genericjavautils;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;


public class HttpUtil {
        
        static public Map<String,String> decodeUri(String uri) {
                if (uri.indexOf('?') != -1) {
                        String parts[] = uri.split("\\?");
                        return decodeParams( parts[1] );
                } else {
                        return new HashMap<String,String>();
                }
                        
                
        }
        
        static public Map<String,String> decodeParams(String str) {
                Map<String,String> res = new HashMap<String,String>();
                
                        
                String parts[] = str.split("&");
                
                for (String part : parts) {
                        String pair[] = part.split("=");
                        String key = pair[0];
                        
                        String val = null;
                        if (pair.length == 2) {
                                
                                
                                try {
                                        val = URLDecoder.decode(pair[1], "ISO-8859-1");
                                } catch (UnsupportedEncodingException e) {
                                        val = pair[1]; // if decode fails try with the raw string
                                }
                                
                        }
                        
                        res.put(key, val);
                }
                
                return res;
        }
        
        static public String getLastPart(String url) {          
                String parts[] = url.split("/");
                String lastPart = parts[ parts.length - 1];
                                
                return lastPart;
        }
        
        static public String encodeParams(Map<String,String> params) {
                StringBuilder sb = new StringBuilder();
                
                boolean isFirst = true;                         
                for (String key :  params.keySet()) {                   
                        if (isFirst) {
                                isFirst = false;
                        } else {
                                sb.append("&");
                        }
                        
                        String val = params.get(key);
                        sb.append(key);
                        sb.append("=");
                        sb.append( encode(val) );
                        
                        
                }
                
                
                return sb.toString();
                
        }
        
        static String encode(String url) {
                if (url == null)
                        return "";
                
                try {
                        return URLEncoder.encode(url, "UTF-8");
                } catch (Exception e) {
                        return url;
                }
        }
        
        public static String getContentString(String  uri, int timeout) throws IOException {
                return getContentString(uri, timeout, "UTF-8");
        }
        
        public static String getContentString(String  uri, int timeout, String encoding) throws IOException {
                byte[] buf = getContent(uri, timeout);
                return new String(buf, encoding);
        }

        public static byte[] getContent(String uri, int timeout) throws IOException {
                URL url = new URL(uri);
                URLConnection connection = url.openConnection();
                
                connection.setConnectTimeout(timeout);
                InputStream is = connection.getInputStream();
                
                return readInputStream(is);
        }
        
        public static byte[] postContent(String uri, String data,  int timeout) throws IOException {
                URL url = new URL(uri);
                HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                connection.setDoOutput(true);
                connection.setRequestMethod("POST");            
                connection.setConnectTimeout(timeout);
                
                OutputStream os = connection.getOutputStream();
                os.write( data.getBytes() );
                
                InputStream is = connection.getInputStream();
                
                return readInputStream(is);

        }
        
        static byte[] readInputStream(InputStream is) throws IOException{
                byte buffer[] = new byte[1024];
                ByteArrayOutputStream baos = new ByteArrayOutputStream(32768); //start buffer size - instead of default 32bytes
                try {
                        int count;
                        while ( (count = is.read(buffer)) != -1) {
                                baos.write(buffer, 0, count);
                        }
                } finally {
                        try {
                                is.close();
                                baos.close();
                        } catch (Exception e) {} //never mind if close throws an exception
                }
                                
                return baos.toByteArray();              
        }
        
}
1	package dk.thoerup.genericjavautils;
2
3	import java.io.ByteArrayOutputStream;
4	import java.io.IOException;
5	import java.io.InputStream;
6	import java.io.OutputStream;
7	import java.io.UnsupportedEncodingException;
8	import java.net.HttpURLConnection;
9	import java.net.URL;
10	import java.net.URLConnection;
11	import java.net.URLDecoder;
12	import java.net.URLEncoder;
13	import java.util.HashMap;
14	import java.util.Map;
15
16
17	public class HttpUtil {
18
19	static public Map<String,String> decodeUri(String uri) {
20	if (uri.indexOf('?') != -1) {
21	String parts[] = uri.split("\\?");
22	return decodeParams( parts[1] );
23	} else {
24	return new HashMap<String,String>();
25	}
26
27
28
29	}
30
31	static public Map<String,String> decodeParams(String str) {
32	Map<String,String> res = new HashMap<String,String>();
33
34
35	String parts[] = str.split("&");
36
37	for (String part : parts) {
38	String pair[] = part.split("=");
39	String key = pair[0];
40
41	String val = null;
42	if (pair.length == 2) {
43
44
45	try {
46	val = URLDecoder.decode(pair[1], "ISO-8859-1");
47	} catch (UnsupportedEncodingException e) {
48	val = pair[1]; // if decode fails try with the raw string
49	}
50
51	}
52
53	res.put(key, val);
54	}
55
56	return res;
57	}
58
59	static public String getLastPart(String url) {
60	String parts[] = url.split("/");
61	String lastPart = parts[ parts.length - 1];
62
63	return lastPart;
64	}
65
66	static public String encodeParams(Map<String,String> params) {
67	StringBuilder sb = new StringBuilder();
68
69	boolean isFirst = true;
70	for (String key : params.keySet()) {
71	if (isFirst) {
72	isFirst = false;
73	} else {
74	sb.append("&");
75	}
76
77	String val = params.get(key);
78	sb.append(key);
79	sb.append("=");
80	sb.append( encode(val) );
81
82
83	}
84
85
86	return sb.toString();
87
88	}
89
90	static String encode(String url) {
91	if (url == null)
92	return "";
93
94	try {
95	return URLEncoder.encode(url, "UTF-8");
96	} catch (Exception e) {
97	return url;
98	}
99	}
100
101	public static String getContentString(String uri, int timeout) throws IOException {
102	return getContentString(uri, timeout, "UTF-8");
103	}
104
105	public static String getContentString(String uri, int timeout, String encoding) throws IOException {
106	byte[] buf = getContent(uri, timeout);
107	return new String(buf, encoding);
108	}
109
110	public static byte[] getContent(String uri, int timeout) throws IOException {
111	URL url = new URL(uri);
112	URLConnection connection = url.openConnection();
113
114	connection.setConnectTimeout(timeout);
115	InputStream is = connection.getInputStream();
116
117	return readInputStream(is);
118	}
119
120	public static byte[] postContent(String uri, String data, int timeout) throws IOException {
121	URL url = new URL(uri);
122	HttpURLConnection connection = (HttpURLConnection) url.openConnection();
123	connection.setDoOutput(true);
124	connection.setRequestMethod("POST");
125	connection.setConnectTimeout(timeout);
126
127	OutputStream os = connection.getOutputStream();
128	os.write( data.getBytes() );
129
130	InputStream is = connection.getInputStream();
131
132	return readInputStream(is);
133
134	}
135
136	static byte[] readInputStream(InputStream is) throws IOException{
137	byte buffer[] = new byte[1024];
138	ByteArrayOutputStream baos = new ByteArrayOutputStream(32768); //start buffer size - instead of default 32bytes
139	try {
140	int count;
141	while ( (count = is.read(buffer)) != -1) {
142	baos.write(buffer, 0, count);
143	}
144	} finally {
145	try {
146	is.close();
147	baos.close();
148	} catch (Exception e) {} //never mind if close throws an exception
149	}
150
151	return baos.toByteArray();
152	}
153
154	}