package easyJ.http.servlet;
import easyJ.http.config.ModuleConfig;
import easyJ.http.config.ControllerConfig;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import easyJ.http.Globals;
import easyJ.logging.EasyJLogger;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import easyJ.common.*;
import javax.servlet.ServletContext;
public class DynamicServlet extends HttpServlet {
public final static Logger LOG = EasyJLogger.getLogger(null);
public DynamicServlet() {}
public void init() {
String prefix = "";
ModuleConfig moduleConfig = new ModuleConfig(prefix);
defaultControllerConfig(moduleConfig);
getServletContext().setAttribute(Globals.MODULE_KEY + prefix,
moduleConfig);
}
protected ModuleConfig getModuleConfig(HttpServletRequest request) {
ModuleConfig config = (ModuleConfig) request
.getAttribute(Globals.MODULE_KEY);
if (config == null) {
config = (ModuleConfig) getServletContext().getAttribute(
Globals.MODULE_KEY);
}
return (config);
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
process(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
process(request, response);
}
protected void process(HttpServletRequest request,
HttpServletResponse response) throws IOException, ServletException {
/**
* 应该包括以下内容： 将客户端的数据封装入VALUE_OBJECT，装入之前要进行数据校验工作
* 抽取出用户希望访问的服务，并执行相应的服务，（执行服务的时候需要验证权限）
* 将得到的更新之后的数据缓存，并且得到和数据相关的操作，也进行缓存。 得到访问完之后应该跳转到的页面（从用户提交的请求得到），并进行跳转
*/
// Wrap multipart requests with a special wrapper
try {
ServletContext application = getServletContext();
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html; charset=utf-8");
RequestProcessor.process(request, response, application);
} catch (EasyJException ex) {
StringWriter sw = new StringWriter();
PrintWriter writer = new PrintWriter(sw);
Throwable root = null;
if (ex.getOriginalException() != null)
root = ex.getOriginalException();
else
root = ex;
root.printStackTrace();
root.printStackTrace(writer);
LOG.info(ex.getLogMessage());
LOG.severe(sw.toString());
} catch (ServletException ex) {
ex.printStackTrace();
} catch (IOException ex) {
ex.printStackTrace();
}
}
private void defaultControllerConfig(ModuleConfig config) {
String value = null;
ControllerConfig cc = config.getControllerConfig();
value = getServletConfig().getInitParameter("bufferSize");
if (value != null) {
cc.setBufferSize(Integer.parseInt(value));
}
value = getServletConfig().getInitParameter("content");
if (value != null) {
cc.setContentType(value);
}
value = getServletConfig().getInitParameter("locale");
// must check for null here
if (value != null) {
if ("true".equalsIgnoreCase(value) || "yes".equalsIgnoreCase(value)) {
cc.setLocale(true);
} else {
cc.setLocale(false);
}
}
value = getServletConfig().getInitParameter("maxFileSize");
if (value != null) {
cc.setMaxFileSize(value);
}
value = getServletConfig().getInitParameter("nocache");
if (value != null) {
if ("true".equalsIgnoreCase(value) || "yes".equalsIgnoreCase(value)) {
cc.setNocache(true);
} else {
cc.setNocache(false);
}
}
value = getServletConfig().getInitParameter("multipartClass");
if (value != null) {
cc.setMultipartClass(value);
}
value = getServletConfig().getInitParameter("tempDir");
if (value != null) {
cc.setTempDir(value);
}
}
}