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1
16 package javax.faces.webapp;
17
18 import javax.faces.FactoryFinder;
19 import javax.faces.context.FacesContext;
20 import javax.faces.context.FacesContextFactory;
21 import javax.faces.lifecycle.Lifecycle;
22 import javax.faces.lifecycle.LifecycleFactory;
23 import javax.servlet.*;
24 import java.io.IOException  ;
25
26
45 public class FacesServlet
46 implements Servlet
47 {
48 public static final String CONFIG_FILES_ATTR = "javax.faces.CONFIG_FILES";
49 public static final String LIFECYCLE_ID_ATTR = "javax.faces.LIFECYCLE_ID";
50
51 private static final String SERVLET_INFO = "FacesServlet of the MyFaces API implementation";
52 private ServletConfig _servletConfig;
53 private FacesContextFactory _facesContextFactory;
54 private Lifecycle _lifecycle;
55
56 public FacesServlet()
57 {
58 super();
59 }
60
61 public void destroy()
62 {
63 _servletConfig = null;
64 _facesContextFactory = null;
65 _lifecycle = null;
66 }
67
68 public ServletConfig getServletConfig()
69 {
70 return _servletConfig;
71 }
72
73 public String getServletInfo()
74 {
75 return SERVLET_INFO;
76 }
77
78 private String getLifecycleId()
79 {
80 String lifecycleId = _servletConfig.getServletContext().getInitParameter(LIFECYCLE_ID_ATTR);
81 return lifecycleId != null ? lifecycleId : LifecycleFactory.DEFAULT_LIFECYCLE;
82 }
83
84 public void init(ServletConfig servletConfig)
85 throws ServletException
86 {
87 _servletConfig = servletConfig;
88 _facesContextFactory = (FacesContextFactory)FactoryFinder.getFactory(FactoryFinder.FACES_CONTEXT_FACTORY);
89
91 LifecycleFactory lifecycleFactory = (LifecycleFactory)FactoryFinder.getFactory(FactoryFinder.LIFECYCLE_FACTORY);
94 _lifecycle = lifecycleFactory.getLifecycle(getLifecycleId());
95 }
96
97 public void service(ServletRequest request,
98 ServletResponse response)
99 throws IOException ,
100 ServletException
101 {
102 FacesContext facesContext
103 = _facesContextFactory.getFacesContext(_servletConfig.getServletContext(),
104 request,
105 response,
106 _lifecycle);
107 try
108 {
109 _lifecycle.execute(facesContext);
110 _lifecycle.render(facesContext);
111 }
112 catch (Throwable e)
113 {
114 logException(e, null);
115 if (e instanceof IOException )
116 {
117 throw (IOException )e;
118 }
119 else if (e instanceof ServletException)
120 {
121 throw (ServletException)e;
122 }
123 else if (e.getMessage() != null)
124 {
125 throw new ServletException(e.getMessage(), e);
126 }
127 else
128 {
129 throw new ServletException(e);
130 }
131 }
132 finally
133 {
134 facesContext.release();
135 }
136 }
137
138 private void logException(Throwable e, String msgPrefix)
139 {
140 String msg;
141 if (msgPrefix == null)
142 {
143 if (e.getMessage() == null)
144 {
145 msg = "Exception in FacesServlet";
146 }
147 else
148 {
149 msg = e.getMessage();
150 }
151 }
152 else
153 {
154 if (e.getMessage() == null)
155 {
156 msg = msgPrefix;
157 }
158 else
159 {
160 msg = msgPrefix + ": " + e.getMessage();
161 }
162 }
163
164 _servletConfig.getServletContext().log(msg, e);
165 e.printStackTrace();
166
167 Throwable cause = e.getCause();
168 if (cause != null && cause != e)
169 {
170 logException(cause, "Root cause");
171 }
172
173 if(e instanceof ServletException)
174 {
175 cause = ((ServletException) e).getRootCause();
176
177 if(cause != null && cause != e)
178 {
179 logException(cause, "Root cause of ServletException");
180 }
181 }
182 }
183
184
185 }
186 |
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