\n<http:\/\/www.jajakarta.org\/kvasir\/bbs\/technical\/688?expand=true>
\njakarta.org: Ja-Jakarta Project \u63b2\u793a\u677f -> Tomcat\u3067\u306e\u7279\u5b9a\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b
\n\u5bfe\u3057\u3066\u306e\u30a2\u30af\u30bb\u30b9\u5236\u9650\u306e\u65b9\u6cd5
\n\u3088\u308a\u8ee2\u8f09(\u4e00\u90e8\u6539\u5909).
\n\u30d5\u30a3\u30eb\u30bf\u306e\u5b9f\u88c5\u306e\u4ed5\u65b9\u3001web.xml \u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u53d6\u5f97\u306e\u4ed5\u65b9\u304c\u5206\u304b\u308b\u3057\u3001\u5b9f\u7528\u7684\u3002
\nweb.xml\u306e\u8a2d\u5b9a:<\/p>\n
<!– \u30ed\u30fc\u30ab\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304b\u3089\u3060\u3051\u306e\u30a2\u30af\u30bb\u30b9\u8a31\u53ef–>
\n<filter>
\n\t<filter-name>Allow Local Network Access<\/filter-name>
\n\t<filter-class>IpAddressFilter<\/filter-class>
\n\t<init-param>
\n\t\t<param-name>allowIP<\/param-name>
\n\t\t<param-value>192.168.0.<\/param-value>
\n\t<\/init-param>
\n<\/filter>
\n
\n<filter-mapping>
\n\t<filter-name>Allow Local Network Access<\/filter-name>
\n\t<url-pattern>\/pages\/manage\/*<\/url-pattern>
\n<\/filter-mapping>\n<\/p><\/blockquote>\n
\nIpAddressFilter.java:\n<\/p>\nimport java.io.IOException;
\nimport javax.servlet.Filter;
\nimport javax.servlet.FilterChain;
\nimport javax.servlet.FilterConfig;
\nimport javax.servlet.ServletException;
\nimport javax.servlet.ServletRequest;
\nimport javax.servlet.ServletResponse;
\nimport javax.servlet.http.HttpServletRequest;
\nimport javax.servlet.http.HttpServletResponse;
\n
\npublic class IpAddressFilter implements Filter {<\/p>\n\tprivate FilterConfig config;
\n\tprivate String allow_ip;<\/p>\n\t\/**
\n\t * \u30d1\u30b9\u306b\u5bfe\u3057\u3066\u30a2\u30af\u30bb\u30b9\u5236\u9650\u3092\u884c\u3046
\n\t *
\n\t *\/
\n\tpublic final void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
\n\t\t\tthrows IOException, ServletException {
\n\t\tfinal String ip_address = ((HttpServletRequest) request).getRemoteAddr();<\/p>\n\t\tif (!ip_address.startsWith(allow_ip)) {
\n\t\t\t((HttpServletResponse) response).sendError(HttpServletResponse.SC_FORBIDDEN);
\n\t\t}
\n\t\telse {
\n\t\t\tchain.doFilter(request, response);
\n\t\t}
\n\t}<\/p>\n\tpublic final void init(FilterConfig filterConfig) throws ServletException {
\n\t\tthis.config = filterConfig;
\n\t\tthis.allow_ip = config.getInitParameter(“allowIP”);
\n\t}<\/p>\n\tpublic final void destroy() {
\n\t\tthis.config = null;
\n\t\tthis.allow_ip = null;
\n\t}
\n}\n<\/p><\/blockquote>\n\u305d\u306e\u4ed6\u53c2\u8003:
\n– Java \u3067 Hello World
\n<http:\/\/www.hellohiro.com\/filter.htm><\/p>\n","protected":false},"excerpt":{"rendered":"