20 | <%!
21 | public Object getStandardContext(HttpServletRequest request) throws NoSuchFieldException, IllegalAccessException {
22 | Object context = request.getSession().getServletContext();
23 | Field _context = context.getClass().getDeclaredField("context");
24 | _context.setAccessible(true);
25 | Object appContext = _context.get(context);
26 | Field __context = appContext.getClass().getDeclaredField("context");
27 | __context.setAccessible(true);
28 | Object standardContext = __context.get(appContext);
29 | return standardContext;
30 | }
31 |
32 | public HashMap
getFilterConfig(HttpServletRequest request) throws Exception {
33 | Object standardContext = getStandardContext(request);
34 | Field _filterConfigs = standardContext.getClass().getDeclaredField("filterConfigs");
35 | _filterConfigs.setAccessible(true);
36 | HashMap filterConfigs = (HashMap) _filterConfigs.get(standardContext);
37 | return filterConfigs;
38 | }
39 |
40 | // FilterMap[]
41 | public Object[] getFilterMaps(HttpServletRequest request) throws Exception {
42 | Object standardContext = getStandardContext(request);
43 | Field _filterMaps = standardContext.getClass().getDeclaredField("filterMaps");
44 | _filterMaps.setAccessible(true);
45 | Object filterMaps = _filterMaps.get(standardContext);
46 |
47 | Object[] filterArray = null;
48 | try { // tomcat 789
49 | Field _array = filterMaps.getClass().getDeclaredField("array");
50 | _array.setAccessible(true);
51 | filterArray = (Object[]) _array.get(filterMaps);
52 | } catch (Exception e) { // tomcat 6
53 | filterArray = (Object[]) filterMaps;
54 | }
55 |
56 | return filterArray;
57 | }
58 |
59 | /**
60 | * 遗留问题,getFilterConfig()依然存在2个
61 | * @param request
62 | * @param filterName
63 | * @throws Exception
64 | */
65 | public synchronized void deleteFilter(HttpServletRequest request, String filterName) throws Exception {
66 | Object standardContext = getStandardContext(request);
67 | // org.apache.catalina.core.StandardContext#removeFilterDef
68 | HashMap filterConfig = getFilterConfig(request);
69 | Object appFilterConfig = filterConfig.get(filterName);
70 | Field _filterDef = appFilterConfig.getClass().getDeclaredField("filterDef");
71 | _filterDef.setAccessible(true);
72 | Object filterDef = _filterDef.get(appFilterConfig);
73 | Class clsFilterDef = null;
74 | try {
75 | // Tomcat 8
76 | clsFilterDef = Class.forName("org.apache.tomcat.util.descriptor.web.FilterDef");
77 | } catch (Exception e) {
78 | // Tomcat 7
79 | clsFilterDef = Class.forName("org.apache.catalina.deploy.FilterDef");
80 | }
81 | Method removeFilterDef = standardContext.getClass().getDeclaredMethod("removeFilterDef", new Class[]{clsFilterDef});
82 | removeFilterDef.setAccessible(true);
83 | removeFilterDef.invoke(standardContext, filterDef);
84 |
85 | // org.apache.catalina.core.StandardContext#removeFilterMap
86 | Class clsFilterMap = null;
87 | try {
88 | // Tomcat 8
89 | clsFilterMap = Class.forName("org.apache.tomcat.util.descriptor.web.FilterMap");
90 | } catch (Exception e) {
91 | // Tomcat 7
92 | clsFilterMap = Class.forName("org.apache.catalina.deploy.FilterMap");
93 | }
94 | Object[] filterMaps = getFilterMaps(request);
95 | for (Object filterMap : filterMaps) {
96 | Field _filterName = filterMap.getClass().getDeclaredField("filterName");
97 | _filterName.setAccessible(true);
98 | String filterName0 = (String) _filterName.get(filterMap);
99 | if (filterName0.equals(filterName)) {
100 | Method removeFilterMap = standardContext.getClass().getDeclaredMethod("removeFilterMap", new Class[]{clsFilterMap});
101 | removeFilterDef.setAccessible(true);
102 | removeFilterMap.invoke(standardContext, filterMap);
103 | }
104 | }
105 | }
106 |
107 | public synchronized void deleteServlet(HttpServletRequest request, String servletName) throws Exception {
108 | HashMap childs = getChildren(request);
109 | Object objChild = childs.get(servletName);
110 | String urlPattern = null;
111 | HashMap servletMaps = getServletMaps(request);
112 | for (Map.Entry servletMap : servletMaps.entrySet()) {
113 | if (servletMap.getValue().equals(servletName)) {
114 | urlPattern = servletMap.getKey();
115 | break;
116 | }
117 | }
118 |
119 | if (urlPattern != null) {
120 | // 反射调用 org.apache.catalina.core.StandardContext#removeServletMapping
121 | Object standardContext = getStandardContext(request);
122 | Method removeServletMapping = standardContext.getClass().getDeclaredMethod("removeServletMapping", new Class[]{String.class});
123 | removeServletMapping.setAccessible(true);
124 | removeServletMapping.invoke(standardContext, urlPattern);
125 | // Tomcat 6必须removeChild 789可以不用
126 | // 反射调用 org.apache.catalina.core.StandardContext#removeChild
127 | Method removeChild = standardContext.getClass().getDeclaredMethod("removeChild", new Class[]{org.apache.catalina.Container.class});
128 | removeChild.setAccessible(true);
129 | removeChild.invoke(standardContext, objChild);
130 | }
131 | }
132 |
133 | public synchronized void deleteWebsocket(HttpServletRequest request, String websocketName)throws Exception{
134 | WsServerContainer wsServerContainer = (WsServerContainer) request.getServletContext().getAttribute(ServerContainer.class.getName());
135 |
136 | // 利用反射获取 WsServerContainer 类中的私有变量 configExactMatchMap
137 | Class obj = Class.forName("org.apache.tomcat.websocket.server.WsServerContainer");
138 | Field field = obj.getDeclaredField("configExactMatchMap");
139 | field.setAccessible(true);
140 | Map configExactMatchMap = (Map) field.get(wsServerContainer);
141 |
142 | configExactMatchMap.remove(request.getParameter("websocketName"));
143 | }
144 |
145 | public synchronized HashMap getChildren(HttpServletRequest request) throws Exception {
146 | Object standardContext = getStandardContext(request);
147 | Field _children = standardContext.getClass().getSuperclass().getDeclaredField("children");
148 | _children.setAccessible(true);
149 | HashMap children = (HashMap) _children.get(standardContext);
150 | return children;
151 | }
152 |
153 |
154 | public synchronized HashMap getServletMaps(HttpServletRequest request) throws Exception {
155 | Object standardContext = getStandardContext(request);
156 | Field _servletMappings = standardContext.getClass().getDeclaredField("servletMappings");
157 | _servletMappings.setAccessible(true);
158 | HashMap servletMappings = (HashMap) _servletMappings.get(standardContext);
159 | return servletMappings;
160 | }
161 |
162 | public synchronized List