\u9a8c\u8bc1\u673a\u5236\u5141\u8bb8\u7528\u6237\u901a\u8fc7\u9a8c\u8bc1\u7528\u6237\u540d\u548c\u5bc6\u7801\u5b89\u5168\u5730\u8bbf\u95ee\u5e94\u7528\u7a0b\u5e8f\u3002\u6211\u4eec\u5c06\u4f7f\u7528JSF\u89c6\u56fe\u8fdb\u884c\u767b\u5f55\uff0cDAO\u5bf9\u8c61\uff0cHttpSession\u8fdb\u884c\u4f1a\u8bdd\u7ba1\u7406\uff0cJSF\u6258\u7ba1\u7ec4\u4ef6\u548cmysql\u6570\u636e\u5e93\u3002\u73b0\u5728\u8ba9\u6211\u4eec\u8be6\u7ec6\u770b\u4e00\u4e0b\u5982\u4f55\u5728JSF\u5e94\u7528\u7a0b\u5e8f\u4e2d\u521b\u5efaJSF\u767b\u5f55\u6ce8\u9500\u9a8c\u8bc1\u673a\u5236\u3002\u7b2c\u4e00\u6b65\uff1a\u5728mysql\u6570\u636e\u5e93\u4e2d\u521b\u5efa\u540d\u4e3aUsers\u7684\u8868\u3002<\/p>\n
CREATE TABLE Users( \r\nuid int(20) NOT NULL AUTO_INCREMENT, \r\nuname VARCHAR(60) NOT NULL, \r\npassword VARCHAR(60) NOT NULL, \r\nPRIMARY KEY(uid));\r\n<\/code><\/pre>\n\u5728\u8fd9\u91cc\u6211\u4eec\u4f7f\u7528uid\u4f5c\u4e3a\u4e3b\u952e\u521b\u5efa\u7528\u6237\u8868\uff0c\u7528\u6237\u540d\u548c\u5bc6\u7801\u5b57\u6bb5\u5e26\u6709\u975e\u7a7a\u7ea6\u675f\u3002\u7b2c\u4e8c\u6b65\uff1a\u5c06\u6570\u636e\u63d2\u5165\u5230\u7528\u6237\u8868\u4e2d\uff0c\u5982\u4e0b\uff1b<\/p>\n
INSERT INTO Users VALUES(1,'adam','adam');\r\n<\/code><\/pre>\n\u5728\u6211\u4eec\u7ee7\u7eed\u9879\u76ee\u76f8\u5173\u7684\u4ee3\u7801\u4e4b\u524d\uff0c\u5728Eclipse\u4e2d\u7684\u4e0b\u9762\u56fe\u50cf\u4e2d\u663e\u793a\u4e86\u9879\u76ee\u7ed3\u6784\u3002\u53ea\u9700\u521b\u5efa\u4e00\u4e2a\u52a8\u6001Web\u9879\u76ee\u5e76\u5c06\u5176\u8f6c\u6362\u4e3aMaven\u4ee5\u83b7\u53d6\u9879\u76ee\u6869\uff0c\u7136\u540e\u7ee7\u7eed\u6dfb\u52a0\u4e0d\u540c\u7684\u7ec4\u4ef6\u3002\u7b2c\u4e09\u6b65\uff1a\u521b\u5efaJSF\u767b\u5f55\u9875\u9762login.xhtml\u3002<\/p>\n
<?xml version='1.0' encoding='UTF-8' ?>\r\n<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD XHTML 1.0 Transitional\/\/EN\" \"https:\/\/www.w3.org\/TR\/xhtml1\/DTD\/xhtml1-transitional.dtd\">\r\n<html xmlns=\"https:\/\/www.w3.org\/1999\/xhtml\"\r\n\txmlns:h=\"https:\/\/java.sun.com\/jsf\/html\">\r\n<h:head>\r\n\t<title>login<\/title>\r\n<\/h:head>\r\n<h:body>\r\n\t<h:form>\r\n\t\t<h3>JSF Login Logout<\/h3>\r\n\t\t<h:outputText value=\"Username\" \/>\r\n\t\t<h:inputText id=\"username\" value=\"#{login.user}\"><\/h:inputText>\r\n\t\t<h:message for=\"username\"><\/h:message>\r\n\t\t<br><\/br><br><\/br>\r\n\t\t\r\n\t\t<h:outputText value=\"Password\" \/>\r\n\t\t<h:inputSecret id=\"password\" value=\"#{login.pwd}\"><\/h:inputSecret>\r\n\t\t<h:message for=\"password\"><\/h:message>\r\n\t\t<br><\/br><br><\/br>\r\n\t\t\r\n\t\t<h:commandButton action=\"#{login.validateUsernamePassword}\"\r\n\t\t\tvalue=\"Login\"><\/h:commandButton>\r\n\t<\/h:form>\r\n<\/h:body>\r\n<\/html>\r\n<\/code><\/pre>\n\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u6b63\u5728\u521b\u5efa\u4e00\u4e2a\u5e26\u6709\u7528\u6237\u540d\u548c\u5bc6\u7801\u5b57\u6bb5\u7684JSF\u767b\u5f55\u89c6\u56fe\u9875\u9762\uff0c\u5e76\u901a\u8fc7\u767b\u5f55\u7ba1\u7406bean\u4e3a\u8fd9\u4e9b\u5b57\u6bb5\u8bbe\u7f6e\u503c\u3002\u5728\u70b9\u51fb\u767b\u5f55\u6309\u94ae\u65f6\uff0c\u6211\u4eec\u8c03\u7528validateUsernamePassword\u65b9\u6cd5\u6765\u9a8c\u8bc1\u7528\u6237\u540d\u548c\u5bc6\u7801\u3002\u7b2c\u56db\u6b65\uff1a\u521b\u5efa\u540d\u4e3aLogin.java\u7684\u7ba1\u7406bean\u3002<\/p>\n
package com.Olivia.jsf.beans;\r\n\r\nimport java.io.Serializable;\r\n\r\nimport javax.faces.application.FacesMessage;\r\nimport javax.faces.bean.ManagedBean;\r\nimport javax.faces.bean.SessionScoped;\r\nimport javax.faces.context.FacesContext;\r\nimport javax.servlet.http.HttpSession;\r\n\r\nimport com.Olivia.jsf.dao.LoginDAO;\r\nimport com.Olivia.jsf.util.SessionUtils;\r\n\r\n@ManagedBean\r\n@SessionScoped\r\npublic class Login implements Serializable {\r\n\r\n\tprivate static final long serialVersionUID = 1094801825228386363L;\r\n\t\r\n\tprivate String pwd;\r\n\tprivate String msg;\r\n\tprivate String user;\r\n\r\n\tpublic String getPwd() {\r\n\t\treturn pwd;\r\n\t}\r\n\r\n\tpublic void setPwd(String pwd) {\r\n\t\tthis.pwd = pwd;\r\n\t}\r\n\r\n\tpublic String getMsg() {\r\n\t\treturn msg;\r\n\t}\r\n\r\n\tpublic void setMsg(String msg) {\r\n\t\tthis.msg = msg;\r\n\t}\r\n\r\n\tpublic String getUser() {\r\n\t\treturn user;\r\n\t}\r\n\r\n\tpublic void setUser(String user) {\r\n\t\tthis.user = user;\r\n\t}\r\n\r\n\t\/\/validate login\r\n\tpublic String validateUsernamePassword() {\r\n\t\tboolean valid = LoginDAO.validate(user, pwd);\r\n\t\tif (valid) {\r\n\t\t\tHttpSession session = SessionUtils.getSession();\r\n\t\t\tsession.setAttribute(\"username\", user);\r\n\t\t\treturn \"admin\";\r\n\t\t} else {\r\n\t\t\tFacesContext.getCurrentInstance().addMessage(\r\n\t\t\t\t\tnull,\r\n\t\t\t\t\tnew FacesMessage(FacesMessage.SEVERITY_WARN,\r\n\t\t\t\t\t\t\t\"Incorrect Username and Passowrd\",\r\n\t\t\t\t\t\t\t\"Please enter correct username and Password\"));\r\n\t\t\treturn \"login\";\r\n\t\t}\r\n\t}\r\n\r\n\t\/\/logout event, invalidate session\r\n\tpublic String logout() {\r\n\t\tHttpSession session = SessionUtils.getSession();\r\n\t\tsession.invalidate();\r\n\t\treturn \"login\";\r\n\t}\r\n}\r\n<\/code><\/pre>\n\u6211\u4eec\u58f0\u660e\u4e86\u4e09\u4e2a\u5b57\u7b26\u4e32\u53d8\u91cfuser\u3001pwd\u548cmsg\uff0c\u5206\u522b\u7528\u4e8e\u5b58\u50a8\u7528\u6237\u540d\u3001\u5bc6\u7801\u548c\u9519\u8bef\u4fe1\u606f\u5b57\u6bb5\uff0c\u5e76\u63d0\u4f9b\u4e86\u76f8\u5e94\u7684getter\u548csetter\u65b9\u6cd5\u3002\u6211\u4eec\u7f16\u5199\u4e86\u4e00\u4e2a\u65b9\u6cd5validateUsernamePassword()\uff0c\u901a\u8fc7\u8c03\u7528LoginDAO\u7c7b\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u7528\u6237\u540d\u548c\u5bc6\u7801\uff0c\u5e76\u4e0e\u524d\u7aef\u4f20\u9012\u7684\u503c\u8fdb\u884c\u6bd4\u8f83\uff0c\u4ece\u800c\u9a8c\u8bc1\u7528\u6237\u540d\u548c\u5bc6\u7801\u5b57\u6bb5\u3002\u5982\u679c\u7528\u6237\u540d\u548c\u5bc6\u7801\u4e0d\u5339\u914d\uff0c\u5219\u663e\u793a\u9519\u8bef\u6d88\u606f\u4e3a\u201c\u7528\u6237\u540d\u6216\u5bc6\u7801\u9519\u8bef\u201d\u3002\u540c\u65f6\uff0c\u6211\u4eec\u8fd8\u7f16\u5199\u4e86\u4e00\u4e2alogout()\u65b9\u6cd5\uff0c\u7528\u4e8e\u901a\u8fc7\u4f7fHTTPSession\u5931\u6548\u6765\u6267\u884c\u6ce8\u9500\u64cd\u4f5c\u3002\u7b2c5\u6b65\uff1a\u73b0\u5728\u521b\u5efaLoginDAO Java\u7c7b\u5982\u4e0b\u6240\u793a\u3002\u8bf7\u6ce8\u610f\uff0c\u6570\u636e\u5e93\u64cd\u4f5c\u4ee3\u7801\u5e76\u4e0d\u662f\u9488\u5bf9\u771f\u5b9e\u9879\u76ee\u8fdb\u884c\u4f18\u5316\u7684\uff0c\u6211\u53ea\u662f\u5c3d\u53ef\u80fd\u5feb\u5730\u7f16\u5199\u4e86\u5b83\uff0c\u56e0\u4e3a\u76ee\u7684\u662f\u5b66\u4e60JSF\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u8eab\u4efd\u9a8c\u8bc1\u3002<\/p>\n
package com.Olivia.jsf.dao;\r\n\r\nimport java.sql.Connection;\r\nimport java.sql.PreparedStatement;\r\nimport java.sql.ResultSet;\r\nimport java.sql.SQLException;\r\n\r\nimport com.Olivia.jsf.util.DataConnect;\r\n\r\npublic class LoginDAO {\r\n\r\n\tpublic static boolean validate(String user, String password) {\r\n\t\tConnection con = null;\r\n\t\tPreparedStatement ps = null;\r\n\r\n\t\ttry {\r\n\t\t\tcon = DataConnect.getConnection();\r\n\t\t\tps = con.prepareStatement(\"Select uname, password from Users where uname = ? and password = ?\");\r\n\t\t\tps.setString(1, user);\r\n\t\t\tps.setString(2, password);\r\n\r\n\t\t\tResultSet rs = ps.executeQuery();\r\n\r\n\t\t\tif (rs.next()) {\r\n\t\t\t\t\/\/result found, means valid inputs\r\n\t\t\t\treturn true;\r\n\t\t\t}\r\n\t\t} catch (SQLException ex) {\r\n\t\t\tSystem.out.println(\"Login error -->\" + ex.getMessage());\r\n\t\t\treturn false;\r\n\t\t} finally {\r\n\t\t\tDataConnect.close(con);\r\n\t\t}\r\n\t\treturn false;\r\n\t}\r\n}\r\n<\/code><\/pre>\n\u5728validate()\u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u901a\u8fc7\u8c03\u7528DataConnect\u7c7b\u7684getConnection\u65b9\u6cd5\u4e0e\u6570\u636e\u5e93\u5efa\u7acb\u8fde\u63a5\u3002\u6211\u4eec\u4f7f\u7528PreparedStatement\u6765\u6784\u5efa\u67e5\u8be2\uff0c\u4ee5\u83b7\u53d6\u6570\u636e\u5e93\u4e2d\u4e0e\u7528\u6237\u8f93\u5165\u7684\u503c\u5339\u914d\u7684\u6570\u636e\u3002\u5982\u679c\u7ed3\u679c\u96c6\u4e2d\u6709\u4efb\u4f55\u6570\u636e\uff0c\u8bf4\u660e\u8f93\u5165\u6709\u6548\uff0c\u5e76\u8fd4\u56detrue\uff0c\u5426\u5219\u8fd4\u56defalse\u3002\u7b2c\u516d\u6b65\uff1a\u521b\u5efaDataConnect.java\u7c7b\u5982\u4e0b\uff1b<\/p>\n
package com.Olivia.jsf.util;\r\n\r\nimport java.sql.Connection;\r\nimport java.sql.DriverManager;\r\n\r\npublic class DataConnect {\r\n\r\n\tpublic static Connection getConnection() {\r\n\t\ttry {\r\n\t\t\tClass.forName(\"com.mysql.jdbc.Driver\");\r\n\t\t\tConnection con = DriverManager.getConnection(\r\n\t\t\t\t\t\"jdbc:mysql:\/\/localhost:3306\/cardb\", \"scdev\", \"scdev123\");\r\n\t\t\treturn con;\r\n\t\t} catch (Exception ex) {\r\n\t\t\tSystem.out.println(\"Database.getConnection() Error -->\"\r\n\t\t\t\t\t+ ex.getMessage());\r\n\t\t\treturn null;\r\n\t\t}\r\n\t}\r\n\r\n\tpublic static void close(Connection con) {\r\n\t\ttry {\r\n\t\t\tcon.close();\r\n\t\t} catch (Exception ex) {\r\n\t\t}\r\n\t}\r\n}\r\n<\/code><\/pre>\n\u6211\u4eec\u4f7f\u7528Class.forName\u65b9\u6cd5\u52a0\u8f7dJDBC\u9a71\u52a8\u7a0b\u5e8f\uff0c\u5e76\u4f7f\u7528DriverManager.getConnection\u65b9\u6cd5\u4f20\u9012URL\u3001\u7528\u6237\u540d\u548c\u5bc6\u7801\u8fde\u63a5\u5230\u6570\u636e\u5e93\u3002\u7b2c\u4e03\u6b65\uff1a\u521b\u5efaSessionUtils.java\u6765\u83b7\u53d6\u548c\u7ba1\u7406\u4e0e\u4f1a\u8bdd\u76f8\u5173\u7684\u7528\u6237\u4fe1\u606f\u3002<\/p>\n
package com.Olivia.jsf.beans;\r\n\r\nimport javax.faces.context.FacesContext;\r\nimport javax.servlet.http.HttpServletRequest;\r\nimport javax.servlet.http.HttpSession;\r\n\r\npublic class SessionUtils {\r\n\r\n\tpublic static HttpSession getSession() {\r\n\t\treturn (HttpSession) FacesContext.getCurrentInstance()\r\n\t\t\t\t.getExternalContext().getSession(false);\r\n\t}\r\n\r\n\tpublic static HttpServletRequest getRequest() {\r\n\t\treturn (HttpServletRequest) FacesContext.getCurrentInstance()\r\n\t\t\t\t.getExternalContext().getRequest();\r\n\t}\r\n\r\n\tpublic static String getUserName() {\r\n\t\tHttpSession session = (HttpSession) FacesContext.getCurrentInstance()\r\n\t\t\t\t.getExternalContext().getSession(false);\r\n\t\treturn session.getAttribute(\"username\").toString();\r\n\t}\r\n\r\n\tpublic static String getUserId() {\r\n\t\tHttpSession session = getSession();\r\n\t\tif (session != null)\r\n\t\t\treturn (String) session.getAttribute(\"userid\");\r\n\t\telse\r\n\t\t\treturn null;\r\n\t}\r\n}\r\n<\/code><\/pre>\n\u901a\u8fc7getUserId\u65b9\u6cd5\u767b\u5f55\u7684\u6bcf\u4e2a\u7528\u6237\uff0c\u6211\u4eec\u5728\u8fd9\u91cc\u4e3a\u6bcf\u4e2a\u7528\u6237\u83b7\u5f97\u4e00\u4e2a\u4f1a\u8bdd\uff0c\u4ece\u800c\u5c06\u4f1a\u8bddID\u4e0e\u7279\u5b9a\u7684\u7528\u6237ID\u5173\u8054\u8d77\u6765\u3002\u7b2c8\u6b65\uff1a\u521b\u5efa\u6388\u6743\u8fc7\u6ee4\u5668\u7c7b\uff0c\u5982\u4e0b\uff1b<\/p>\n
package com.Olivia.jsf.filter;\r\n\r\nimport java.io.IOException;\r\nimport javax.servlet.Filter;\r\nimport javax.servlet.FilterChain;\r\nimport javax.servlet.FilterConfig;\r\nimport javax.servlet.ServletException;\r\nimport javax.servlet.ServletRequest;\r\nimport javax.servlet.ServletResponse;\r\nimport javax.servlet.annotation.WebFilter;\r\nimport javax.servlet.http.HttpServletRequest;\r\nimport javax.servlet.http.HttpServletResponse;\r\nimport javax.servlet.http.HttpSession;\r\n\r\n@WebFilter(filterName = \"AuthFilter\", urlPatterns = { \"*.xhtml\" })\r\npublic class AuthorizationFilter implements Filter {\r\n\r\n\tpublic AuthorizationFilter() {\r\n\t}\r\n\r\n\t@Override\r\n\tpublic void init(FilterConfig filterConfig) throws ServletException {\r\n\r\n\t}\r\n\r\n\t@Override\r\n\tpublic void doFilter(ServletRequest request, ServletResponse response,\r\n\t\t\tFilterChain chain) throws IOException, ServletException {\r\n\t\ttry {\r\n\r\n\t\t\tHttpServletRequest reqt = (HttpServletRequest) request;\r\n\t\t\tHttpServletResponse resp = (HttpServletResponse) response;\r\n\t\t\tHttpSession ses = reqt.getSession(false);\r\n\r\n\t\t\tString reqURI = reqt.getRequestURI();\r\n\t\t\tif (reqURI.indexOf(\"\/login.xhtml\") >= 0\r\n\t\t\t\t\t|| (ses != null && ses.getAttribute(\"username\") != null)\r\n\t\t\t\t\t|| reqURI.indexOf(\"\/public\/\") >= 0\r\n\t\t\t\t\t|| reqURI.contains(\"javax.faces.resource\"))\r\n\t\t\t\tchain.doFilter(request, response);\r\n\t\t\telse\r\n\t\t\t\tresp.sendRedirect(reqt.getContextPath() + \"\/faces\/login.xhtml\");\r\n\t\t} catch (Exception e) {\r\n\t\t\tSystem.out.println(e.getMessage());\r\n\t\t}\r\n\t}\r\n\r\n\t@Override\r\n\tpublic void destroy() {\r\n\r\n\t}\r\n}\r\n<\/code><\/pre>\n\u6211\u4eec\u901a\u8fc7\u91cd\u5199destroy\u548cdoFilter\u65b9\u6cd5\u6765\u5b9e\u73b0\u6807\u51c6\u8fc7\u6ee4\u5668\u7c7b\u3002\u5728doFilter\u65b9\u6cd5\u4e2d\uff0c\u5982\u679c\u7528\u6237\u5c1d\u8bd5\u5728\u672a\u767b\u5f55\u7684\u60c5\u51b5\u4e0b\u8bbf\u95ee\u5176\u4ed6\u9875\u9762\uff0c\u6211\u4eec\u5c06\u91cd\u5b9a\u5411\u7528\u6237\u5230\u767b\u5f55\u9875\u9762\u3002\u7b2c\u4e5d\u6b65\uff1a\u521b\u5efaadmin.xhtml\u9875\u9762\u5982\u4e0b\uff1b<\/p>\n
<?xml version='1.0' encoding='UTF-8' ?>\r\n<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD XHTML 1.0 Transitional\/\/EN\"\r\n \"https:\/\/www.w3.org\/TR\/xhtml1\/DTD\/xhtml1-transitional.dtd\">\r\n<html xmlns=\"https:\/\/www.w3.org\/1999\/xhtml\"\r\n\txmlns:h=\"https:\/\/java.sun.com\/jsf\/html\">\r\n<h:head>\r\n\t<title>Facelet Title<\/title>\r\n<\/h:head>\r\n<h:body>\r\n\t<h:form>\r\n\t\t<p>Welcome #{login.user}<\/p>\r\n\t\t<h:commandLink action=\"#{login.logout}\" value=\"Logout\"><\/h:commandLink>\r\n\t<\/h:form>\r\n<\/h:body>\r\n<\/html>\r\n<\/code><\/pre>\n\u5f53\u7528\u6237\u6210\u529f\u767b\u5f55\u65f6\uff0c\u4f1a\u5448\u73b0\u51fa\u8fd9\u4e2a\u9875\u9762\u3002\u901a\u8fc7\u8c03\u7528Login.java\u7c7b\u7684logout\u65b9\u6cd5\u5b9e\u73b0\u9000\u51fa\u529f\u80fd\u3002\u7b2c10\u6b65\uff1a\u521b\u5efafaces-config.xml\u6587\u4ef6\u3002<\/p>\n
<?xml version='1.0' encoding='UTF-8'?>\r\n<faces-config version=\"2.2\" xmlns=\"https:\/\/xmlns.jcp.org\/xml\/ns\/javaee\"\r\n\txmlns:xsi=\"https:\/\/www.w3.org\/2001\/XMLSchema-instance\"\r\n\txsi:schemaLocation=\"https:\/\/xmlns.jcp.org\/xml\/ns\/javaee \r\n\thttps:\/\/xmlns.jcp.org\/xml\/ns\/javaee\/web-facesconfig_2_2.xsd\">\r\n\r\n\t<navigation-rule>\r\n\t\t<from-view-id>\/login.xhtml<\/from-view-id>\r\n\t\t<navigation-case>\r\n\t\t\t<from-outcome>admin<\/from-outcome>\r\n\t\t\t<to-view-id>\/admin.xhtml<\/to-view-id>\r\n\t\t<\/navigation-case>\r\n\t<\/navigation-rule>\r\n\r\n<\/faces-config>\r\n<\/code><\/pre>\n\u5b8c\u6210\u4e0a\u8ff0\u6240\u6709\u6b65\u9aa4\u540e\uff0c\u8fd0\u884c\u5e94\u7528\u7a0b\u5e8f\u5e76\u5728\u6d4f\u89c8\u5668\u4e2d\u67e5\u770b\u4ee5\u4e0b\u8f93\u51fa\u3002 \u767b\u5f55\u9875\u9762 \u8eab\u4efd\u9a8c\u8bc1\u9519\u8bef\u9875\u9762 \u767b\u5f55\u6210\u529f\u9875\u9762 \u5df2\u767b\u5f55\u72b6\u6001\u4e0b\u8bbf\u95eeadmin.xhtml \u9875\u9762 \u53ea\u9700\u70b9\u51fb\u6ce8\u9500\u94fe\u63a5\u5373\u53ef\u4f7f\u4f1a\u8bdd\u65e0\u6548\uff0c\u7136\u540e\u5c1d\u8bd5\u8bbf\u95eeadmin.xhtml\u9875\u9762\uff0c\u60a8\u5c06\u88ab\u91cd\u5b9a\u5411\u5230\u767b\u5f55\u9875\u9762\uff0c\u8bf7\u7ee7\u7eed\u4f7f\u7528\u4e0b\u65b9\u94fe\u63a5\u4e0b\u8f7d\u8be5\u9879\u76ee\u5e76\u5c1d\u8bd5\u5b83\u3002<\/p>\n
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