|
1 package org.ashkelon.util;
2
6
7 import java.util.Enumeration  ;
8 import java.util.HashMap ;
9 import java.util.Iterator ;
10 import java.util.Map ;
11 import java.util.Set ;
12
13 import javax.servlet.ServletRequest ;
14 import javax.servlet.http.HttpServletRequest ;
15
16
22 public class ServletUtils
23 {
24 public static int getIntParam(ServletRequest request, String name)
25 {
26 String value = getRequestParam(request, name);
28 if (StringUtils.isBlank(value))
29 value = "0";
30 try
31 {
32 return Integer.parseInt(value);
33 }
34 catch (NumberFormatException ex)
35 {
36 return -1;
37 }
38 }
39
40 public static String getRequestParam(ServletRequest request, String key)
41 {
42 Object val = request.getAttribute(key);
43 String value;
44 if (val == null)
45 value = StringUtils.avoidNull(request.getParameter(key));
46 else
47 value = val.toString();
48 return value;
49 }
50
51 public static String getQueryString(ServletRequest request)
52 {
53 Enumeration e = request.getParameterNames();
54 Map pairs = new HashMap (6);
55 String name;
56 while (e.hasMoreElements())
57 {
58 name = (String ) e.nextElement();
59 pairs.put(name, request.getParameter(name));
60 }
61 e = request.getAttributeNames();
62 Object attr_value;
63 while (e.hasMoreElements())
64 {
65 name = (String ) e.nextElement();
66 attr_value = request.getAttribute(name);
67 if (attr_value instanceof String )
68 pairs.put(name, attr_value);
69 }
70
71 String [] strpairs = new String [pairs.size()];
72 Set entrySet = pairs.entrySet();
73 Iterator itr = entrySet.iterator();
74 Map.Entry entry;
75 int i=0;
76 while (itr.hasNext())
77 {
78 entry = (Map.Entry ) itr.next();
79 strpairs[i++] = (String ) entry.getKey() + "=" + entry.getValue();
80 }
81 return StringUtils.join(strpairs, "&");
82 }
83
84 public static String getCommand(HttpServletRequest request)
85 {
86 String path = request.getServletPath();
87 int len = path.length();
89 String cmd = path.substring(1,len-3); return cmd;
91 }
92 private static void debugRequest(HttpServletRequest request)
93 {
94 Logger logger = Logger.getInstance();
95 logger.verbose("getServletPath: "+request.getServletPath());
96 logger.verbose("getRequestURI: "+request.getRequestURI());
97 logger.verbose("getQueryString: "+request.getQueryString());
98 logger.verbose("getPathTranslated: "+request.getPathTranslated());
99 logger.verbose("getPathInfo: "+request.getPathInfo());
100 logger.verbose("getContextPath: "+request.getContextPath());
101 }
102
103 public static String getCommand(HttpServletRequest request, String defaultCmd)
104 {
105 String cmd = getCommand(request);
106 if (StringUtils.isBlank(cmd))
107 {
108 cmd = defaultCmd;
109 Logger.getInstance().traceln("defaulting to cmd: "+cmd);
110 }
111 return cmd;
112 }
113
114 }
115 |
Popular Tags |
Java API By Example, From Geeks To Geeks.