/**
* Copyright (c) 2011-2017, James Zhan 詹波 (jfinal@126.com).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.jfinal.plugin.druid;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.alibaba.druid.support.http.StatViewServlet;
import com.jfinal.handler.Handler;
import com.jfinal.kit.HandlerKit;
import com.jfinal.kit.StrKit;
/**
* 替代 StatViewServlet
*/
public class DruidStatViewHandler extends Handler {
private IDruidStatViewAuth auth;
private String visitPath = "/druid";
private StatViewServlet servlet = new JFinalStatViewServlet();
public DruidStatViewHandler(String visitPath) {
this(visitPath,
new IDruidStatViewAuth(){
public boolean isPermitted(HttpServletRequest request) {
return true;
}
});
}
public DruidStatViewHandler(String visitPath , IDruidStatViewAuth druidStatViewAuth) {
if (StrKit.isBlank(visitPath))
throw new IllegalArgumentException("visitPath can not be blank");
if (druidStatViewAuth == null)
throw new IllegalArgumentException("druidStatViewAuth can not be null");
visitPath = visitPath.trim();
if (! visitPath.startsWith("/"))
visitPath = "/" + visitPath;
this.visitPath = visitPath;
this.auth = druidStatViewAuth;
}
public void handle(String target, HttpServletRequest request, HttpServletResponse response, boolean[] isHandled) {
if (target.startsWith(visitPath)) {
isHandled[0] = true;
if (target.equals(visitPath) && !target.endsWith("/index.html")) {
HandlerKit.redirect(target += "/index.html", request, response, isHandled);
return ;
}
try {
servlet.service(request, response);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
else {
next.handle(target, request, response, isHandled);
}
}
class JFinalStatViewServlet extends StatViewServlet {
private static final long serialVersionUID = 2898674199964021798L;
public boolean isPermittedRequest(HttpServletRequest request) {
return auth.isPermitted(request);
}
public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String contextPath = request.getContextPath();
// String servletPath = request.getServletPath();
String requestURI = request.getRequestURI();
response.setCharacterEncoding("utf-8");
if (contextPath == null) { // root context
contextPath = "";
}
// String uri = contextPath + servletPath;
// String path = requestURI.substring(contextPath.length() + servletPath.length());
int index = contextPath.length() + visitPath.length();
String uri = requestURI.substring(0, index);
String path = requestURI.substring(index);
if (!isPermittedRequest(request)) {
path = "/nopermit.html";
returnResourceFile(path, uri, response);
return;
}
if ("/submitLogin".equals(path)) {
String usernameParam = request.getParameter(PARAM_NAME_USERNAME);
String passwordParam = request.getParameter(PARAM_NAME_PASSWORD);
if (username.equals(usernameParam) && password.equals(passwordParam)) {
request.getSession().setAttribute(SESSION_USER_KEY, username);
response.getWriter().print("success");
} else {
response.getWriter().print("error");
}
return;
}
if (isRequireAuth() //
&& !ContainsUser(request)//
&& !("/login.html".equals(path) //
|| path.startsWith("/css")//
|| path.startsWith("/js") //
|| path.startsWith("/img"))) {
if (contextPath == null || contextPath.equals("") || contextPath.equals("/")) {
response.sendRedirect("/druid/login.html");
} else {
if ("".equals(path)) {
response.sendRedirect("druid/login.html");
} else {
response.sendRedirect("login.html");
}
}
return;
}
if ("".equals(path)) {
if (contextPath == null || contextPath.equals("") || contextPath.equals("/")) {
response.sendRedirect("/druid/index.html");
} else {
response.sendRedirect("druid/index.html");
}
return;
}
if ("/".equals(path)) {
response.sendRedirect("index.html");
return;
}
if (path.indexOf(".json") >= 0) {
String fullUrl = path;
if (request.getQueryString() != null && request.getQueryString().length() > 0) {
fullUrl += "?" + request.getQueryString();
}
response.getWriter().print(process(fullUrl));
return;
}
// find file in resources path
returnResourceFile(path, uri, response);
}
}
}