@Override
public void init(FilterConfig fc) throws ServletException {
log.info("DispatcherFilter starting ...");
log.info("java.version = {}", JdkUtils.JAVA_VERSION);
log.info("webmvc.version = {}", WebConfig.VERSION);
log.info("user.dir = {}", System.getProperty("user.dir"));
log.info("java.io.tmpdir = {}", System.getProperty("java.io.tmpdir"));
log.info("user.timezone = {}", System.getProperty("user.timezone"));
log.info("file.encoding = {}", System.getProperty("file.encoding"));
try {
long ts = System.currentTimeMillis();
ServletContext sc = fc.getServletContext();
String configLocation = fc.getInitParameter("configLocation");
WebInitializer.initialize(sc, configLocation);
httpEncoding = WebConfig.getHttpEncoding();
httpCache = WebConfig.isHttpCache();
router = WebConfig.getRouter();
bypassRequestUrls = WebConfig.getBypassRequestUrls();
corsRequestProcessor = WebConfig.getCORSRequestProcessor();
resultHandlerResolver = WebConfig.getResultHandlerResolver();
fileUploadResolver = WebConfig.getFileUploadResolver();
exceptionHandler = WebConfig.getExceptionHandler();
log.info("web.root = {}", WebConfig.getWebroot());
log.info("web.development = {}", WebConfig.isDevelopment());
log.info("web.upload.dir = {}", WebConfig.getUploaddir());
log.info("web.urls.router = {}", router.getClass().getName());
log.info(
"web.urls.bypass = {}",
(bypassRequestUrls == null) ? null : bypassRequestUrls.getClass().getName());
log.info(
"web.urls.cors = {}",
(corsRequestProcessor == null) ? null : corsRequestProcessor.getClass().getName());
for (Plugin plugin : WebConfig.getPlugins()) {
log.info("load plugin: {}", plugin.getClass().getName());
plugin.initialize();
}
for (Interceptor interceptor : WebConfig.getInterceptors()) {
log.info("load interceptor: {}", interceptor.getClass().getName());
interceptor.initialize();
}
log.info(
"DispatcherFilter initialize successfully, Time elapsed: {} ms.",
System.currentTimeMillis() - ts);
} catch (Exception e) {
log.error("Failed to initialize DispatcherFilter", e);
log.error("*************************************");
log.error(" System.exit(1) ");
log.error("*************************************");
System.exit(1);
}
}
@Override
public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain)
throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) req;
HttpServletResponse response = (HttpServletResponse) resp;
request.setCharacterEncoding(httpEncoding);
response.setCharacterEncoding(httpEncoding);
String path = RequestUtils.getPathInfo(request);
if (httpCache == false) {
ResponseUtils.setBufferOff(response);
}
if (bypassRequestUrls != null && bypassRequestUrls.accept(request, path)) {
chain.doFilter(request, response);
return;
}
HttpMethod httpMethod = HttpMethod.valueOf(request.getMethod());
if (corsRequestProcessor != null) {
corsRequestProcessor.setHeaders(request, response);
if (httpMethod == HttpMethod.OPTIONS) {
response.setStatus(HttpServletResponse.SC_OK);
return;
}
}
RouteInfo route = router.lookup(request, path, httpMethod);
request = fileUploadResolver.transform(request);
RequestContext ctx = new RequestContext(request, response, path, httpMethod, route);
try {
if (route == null || route == RouteInfo.NOT_FOUND) {
throw new ActionNotFoundException(path);
}
InterceptorChainImpl interceptorChain =
new InterceptorChainImpl(WebConfig.getInterceptors(), ctx);
interceptorChain.invoke();
ResultInfo result = interceptorChain.getResult();
if (result != null) {
ResultHandler<Object> handler = resultHandlerResolver.lookup(result.getResultClass());
handler.handle(ctx, result.getResultObject());
}
} catch (Exception e) {
handleError(ctx, e);
} finally {
if (ctx != null) {
ctx.destory();
}
}
}
@Override
public void destroy() {
log.info("DispatcherFilter destroy...");
for (Interceptor interceptor : WebConfig.getInterceptors()) {
log.info("destroy interceptor: {}", interceptor.getClass().getName());
interceptor.destory();
}
for (Plugin plugin : WebConfig.getPlugins()) {
log.info("destroy plugin: {}", plugin.getClass().getName());
plugin.destory();
}
log.info("DispatcherFilter exit.");
}