package com.smtservlet.exception;
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import java.util.Map;
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import java.util.Map.Entry;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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import org.springframework.web.servlet.HandlerExceptionResolver;
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import org.springframework.web.servlet.ModelAndView;
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import org.springframework.web.servlet.View;
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import com.smtservlet.core.SMTApp;
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import com.smtservlet.util.Json;
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import com.smtservlet.util.SMTJsonWriter;
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import com.smtservlet.util.SMTStatic;
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/**
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* 当请求发生异常时，自动返回异常信息View的类
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*/
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public class SMTControlExceptionResolver implements HandlerExceptionResolver
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{
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private static class ExceptionView implements View
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{
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String _errCode;
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String _msg;
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String _url;
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public ExceptionView(String errCode, String msg, String url)
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{
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_errCode = errCode;
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_msg = msg;
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_url = url;
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}
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@Override
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public String getContentType() {
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return null;
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}
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@Override
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public void render(Map<String, ?> paramMap,
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HttpServletRequest request,
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HttpServletResponse response) throws Exception {
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// if(request.getMethod().equalsIgnoreCase("GET"))
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// {
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// response.setCharacterEncoding("UTF-8");
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// response.setContentType("text/html;charset=UTF-8");
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// response.getOutputStream().write(_msg.getBytes("UTF-8"));
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// }
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// else
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{
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if(_url != null)
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{
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response.setCharacterEncoding("UTF-8");
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SMTJsonWriter jsonWr = new SMTJsonWriter(false);
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jsonWr.addKeyValue("json_ok", false);
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jsonWr.addKeyValue("err_code", _errCode);
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jsonWr.addKeyValue("err_no_login", "AUTH".equals(_errCode));
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jsonWr.addKeyValue("err_to_local", true);
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jsonWr.addKeyValue("json_top_url", _url);
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if(_msg != null)
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jsonWr.addKeyValue("json_msg", _msg);
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String ret = jsonWr.getFullJson();
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response.getOutputStream().write(ret.getBytes("UTF-8"));
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}
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else if(_msg != null)
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{
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response.setCharacterEncoding("UTF-8");
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SMTJsonWriter jsonWr = new SMTJsonWriter(false);
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jsonWr.addKeyValue("json_ok", false);
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jsonWr.addKeyValue("err_no_login", true);
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jsonWr.addKeyValue("err_to_local", true);
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jsonWr.addKeyValue("json_msg", "内部错误:" + _msg);
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String ret = jsonWr.getFullJson();
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response.getOutputStream().write(ret.getBytes("UTF-8"));
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}
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}
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}
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}
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private static Logger _logger = LogManager.getLogger(SMTControlExceptionResolver.class);
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@Override
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public ModelAndView resolveException(
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final HttpServletRequest request,
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HttpServletResponse response,
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Object paramObject,
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Exception paramException) {
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Json jsonConfig = SMTStatic.emptyObject;
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ModelAndView view = null;
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String urlHome = SMTApp.getRequestExeptionUrl();
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if(SMTStatic.isNullOrEmpty(urlHome))
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urlHome = "{WEB_ROOT}";
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StringBuilder sbLog = new StringBuilder();
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if(request != null)
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{
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String queryString = request.getQueryString();
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sbLog.append(String.format(
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"\n\n========================================\nReqURL:%s:%s%s\n",
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request.getMethod(),
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request.getRequestURL(),
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queryString== null ? "" : "?" + queryString));
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Map<String, String[]> map = request.getParameterMap();
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for(Entry<String, String[]> ent : map.entrySet())
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{
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String keys = ent.getKey().toString();
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String values = ((String[])ent.getValue())[0];
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sbLog.append(String.format("ReqPara:%s=%s\n", keys, values));
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}
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_logger.fatal(SMTStatic.throwToString(paramException) + sbLog.toString());
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}
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else
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{
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_logger.fatal(SMTStatic.throwToString(paramException));
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}
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// if(request.getMethod().equalsIgnoreCase("GET"))
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// {
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// // 如果当前是子窗口，则显示系统信息
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// if(!SMTStatic.isNullOrEmpty(request.getHeader("Referer")))
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// {
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// if(paramException instanceof SMTAuthorityException)
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// {
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// view = new ModelAndView(new ExceptionView("AUTH", jsonConfig.safeGetStr("no_authority", "您无权使用此项功能，请重新登录"), null));
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// }
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// }
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// // 如果当前是主窗口，则直接跳到登录页面
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// else
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// {
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// urlHome = SMTStatic.stringFormat(urlHome, new SMTStatic.StringNamedNotify(){
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//
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// @Override
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// public Object getNamedValue(String name, Object[] args) throws Exception {
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// if(name.equals("WEB_ROOT"))
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// return "/";
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// throw new Exception("unsupport url argument : " + name);
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// }
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//
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// });
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//
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// view = new ModelAndView("redirect:" + urlHome);
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// }
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// }
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// else
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{
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urlHome = SMTStatic.stringFormat(urlHome, new SMTStatic.StringNamedNotify(){
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@Override
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public Object getNamedValue(String name, Object[] args) throws Exception {
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if(name.equals("WEB_ROOT"))
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return request.getContextPath() + "/";
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throw new Exception("unsupport url argument : " + name);
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}
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});
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if(paramException instanceof SMTAuthorityException)
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{
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view = new ModelAndView(new ExceptionView("AUTH", jsonConfig.safeGetStr("no_authority", "您无权使用此项功能，请重新登录"), urlHome));
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}
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else
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{
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String uuid = SMTStatic.newSequence();
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_logger.fatal("exception log id : " + uuid, paramException);
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view = new ModelAndView(new ExceptionView("EXCEPTION", jsonConfig.safeGetStr("inner_exception", "发生内部错误。" + SMTStatic.throwToString(paramException)), urlHome));
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}
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}
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return view;
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}
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}
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