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], "UTF-8");
                                } 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	try {
44	val = URLDecoder.decode(pair[1], "UTF-8");
45	} catch (UnsupportedEncodingException e) {
46	val = pair[1]; // if decode fails try with the raw string
47	}
48
49	}
50
51	res.put(key, val);
52	}
53
54	return res;
55	}
56
57	static public String getLastPart(String url) {
58	String parts[] = url.split("/");
59	String lastPart = parts[ parts.length - 1];
60
61	return lastPart;
62	}
63
64	static public String encodeParams(Map<String,String> params) {
65	StringBuilder sb = new StringBuilder();
66
67	boolean isFirst = true;
68	for (String key : params.keySet()) {
69	if (isFirst) {
70	isFirst = false;
71	} else {
72	sb.append("&");
73	}
74
75	String val = params.get(key);
76	sb.append(key);
77	sb.append("=");
78	sb.append( encode(val) );
79
80
81	}
82
83
84	return sb.toString();
85
86	}
87
88	static String encode(String url) {
89	if (url == null)
90	return "";
91
92	try {
93	return URLEncoder.encode(url, "UTF-8");
94	} catch (Exception e) {
95	return url;
96	}
97	}
98
99	public static String getContentString(String uri, int timeout) throws IOException {
100	return getContentString(uri, timeout, "UTF-8");
101	}
102
103	public static String getContentString(String uri, int timeout, String encoding) throws IOException {
104	byte[] buf = getContent(uri, timeout);
105	return new String(buf, encoding);
106	}
107
108	public static byte[] getContent(String uri, int timeout) throws IOException {
109	URL url = new URL(uri);
110	URLConnection connection = url.openConnection();
111
112	connection.setConnectTimeout(timeout);
113	InputStream is = connection.getInputStream();
114
115	return readInputStream(is);
116	}
117
118	public static byte[] postContent(String uri, String data, int timeout) throws IOException {
119	URL url = new URL(uri);
120	HttpURLConnection connection = (HttpURLConnection) url.openConnection();
121	connection.setDoOutput(true);
122	connection.setRequestMethod("POST");
123	connection.setConnectTimeout(timeout);
124
125	OutputStream os = connection.getOutputStream();
126	os.write( data.getBytes() );
127
128	InputStream is = connection.getInputStream();
129
130	return readInputStream(is);
131
132	}
133
134	static byte[] readInputStream(InputStream is) throws IOException{
135	byte buffer[] = new byte[1024];
136	ByteArrayOutputStream baos = new ByteArrayOutputStream(32768); //start buffer size - instead of default 32bytes
137	try {
138	int count;
139	while ( (count = is.read(buffer)) != -1) {
140	baos.write(buffer, 0, count);
141	}
142	} finally {
143	try {
144	is.close();
145	baos.close();
146	} catch (Exception e) {} //never mind if close throws an exception
147	}
148
149	return baos.toByteArray();
150	}
151
152	}