package org.eweb4j.mvc.interceptor;
import java.io.PrintWriter;
import java.util.List;
import java.util.Map;
import org.eweb4j.cache.ActionConfigBeanCache;
import org.eweb4j.cache.InterConfigBeanCache;
import org.eweb4j.config.LogFactory;
import org.eweb4j.mvc.Context;
import org.eweb4j.mvc.config.bean.ActionConfigBean;
import org.eweb4j.mvc.config.bean.InterConfigBean;
import org.eweb4j.mvc.config.bean.Uri;
import org.eweb4j.mvc.validator.ValidatorConstant;
import org.eweb4j.mvc.view.CallBackJson;
public class InterExecution {
private String showErrType = null;
private Interceptor inter = null;
private String interType = null;
private Context context = null;
private String error = null;
public InterExecution(String interType, Context context) {
this.interType = interType;
this.context = context;
}
/**
* 找
*
* @return
* @throws Exception
*/
public boolean findAndExecuteInter() throws Exception {
for (InterConfigBean inter : InterConfigBeanCache.getList()) {
String _interType = inter.getType();
if (!interType.equals(_interType))
continue;
String uri = this.context.getUri();
if (inter.getExcept().contains(uri))
continue;
String policy = inter.getPolicy();
boolean isOR = "or".equalsIgnoreCase(policy) ? true : false;
List<Uri> uris = inter.getUri();
final int size = uris.size();
int result = 1;
for (int i = 0; i < size; i++) {
Uri u = uris.get(i);
String type = u.getType();
String value = u.getValue();
int c = 1;
if ("start".equalsIgnoreCase(type) && uri.startsWith(value))
// 以url开头
;
else if ("end".equalsIgnoreCase(type) && uri.endsWith(value))
// 以url结尾
;
else if ("contains".equalsIgnoreCase(type)
&& uri.contains(value))
// 包含url
;
else if ("all".equalsIgnoreCase(type) && uri.equals(value))
// 完全匹配url
;
else if ("regex".equalsIgnoreCase(type) && uri.matches(value))
// 正则匹配
;
else if ("actions".equalsIgnoreCase(type)) {
if (!findActionUriMapping())
c = 0;
} else if ("!start".equalsIgnoreCase(type)
&& !uri.startsWith(value))
// 不以url开头
;
else if ("!end".equalsIgnoreCase(type) && !uri.endsWith(value))
// 不以url结尾
;
else if ("!contains".equalsIgnoreCase(type)
&& !uri.contains(value))
// 不包含url
;
else if ("!all".equalsIgnoreCase(type) && !uri.equals(value))
// 不完全匹配url
;
else if ("!regex".equalsIgnoreCase(type) && !uri.matches(value))
// 不正则匹配
;
else if ("!actions".equalsIgnoreCase(type)) {
if (ActionConfigBeanCache.containsKey(uri)
|| (ActionConfigBeanCache.getByMatches(uri,
context.getHttpMethod())) != null) {
// 找到了action 与当前访问的uri映射
c = 0;
}
} else if ("*".equals(type)) {
// 所有都匹配
findActionUriMapping();
} else
c = 0;
if (isOR)
result += c;
else {
if (c == 0)
break;
result *= c;
}
if (i < size - 1)
continue;
if (result == 0)
continue;
this.inter = (Interceptor) Class.forName(inter.getClazz())
.newInstance();
this.showErrType = inter.getShowErrorType();
this.inter.setContext(this.context);
this.error = this.inter.intecept();
// 如果拦截处理之后没有任何错误信息，进入下一个URI继续处理，否则显示错误信息
if (this.error == null)
continue;
else {
logErr();
return true;
}
}
}
return false;
}
private boolean findActionUriMapping() {
boolean result = false;
Map<String, List<?>> map = null;
if (ActionConfigBeanCache.containsKey(this.context.getUri())
|| (map = ActionConfigBeanCache.getByMatches(
this.context.getUri(), context.getHttpMethod())) != null) {
// 找到了action 与当前访问的uri映射
if (map.containsKey("mvcBean")) {
ActionConfigBean acb = (ActionConfigBean) map.get("mvcBean")
.get(0);
this.context.setMvcBean(acb);
result = true;
}
}
return result;
}
/**
* 显示拦截器执行之后的错误信息
*
* @param error
* @throws Exception
*/
public void showErr() throws Exception {
if (ValidatorConstant.DEFAULT_LOC.equals(this.showErrType)
|| ValidatorConstant.ALERT_LOC.equals(this.showErrType))
this.print(
this.context.getResponse().getWriter(),
"<script>alert('"
+ error
+ "');javascript:history.go(-1)</script><center></center>");
else if (ValidatorConstant.AJAX_OUT_LOC.equals(this.showErrType))
this.print(this.context.getResponse().getWriter(), error);
else if (ValidatorConstant.DWZ_JSON_LOC.equals(this.showErrType))
this.print(this.context.getResponse().getWriter(),
new CallBackJson(error).toString());
else if (ValidatorConstant.JAVASCRIPT_LOC.equals(this.showErrType))
this.print(this.context.getResponse().getWriter(), "<script>"
+ error + "</script>");
else {
// 如果是填写跳转页面的话
this.context.getRequest().setAttribute("interError", error);
this.context
.getRequest()
.getRequestDispatcher(this.showErrType)
.forward(this.context.getRequest(),
this.context.getResponse());
}
}
private void print(PrintWriter out, String err) {
out.print(err);
out.flush();
out.close();
out = null;
}
private void logErr() {
StringBuilder sb = new StringBuilder();
sb.append("MVC:拦截器拦截url：").append(this.context.getUri());
sb.append("并输出错误信息:").append(this.error);
LogFactory.getMVCLogger("INFO").write(sb.toString());
}
}