package org.nutz.ngqa.mvc;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.zip.DataFormatException;
import org.nutz.lang.Lang;
import org.nutz.log.Log;
import org.nutz.log.Logs;
import org.nutz.mvc.ActionContext;
import org.nutz.mvc.ActionInfo;
import org.nutz.mvc.HttpAdaptor;
import org.nutz.mvc.NutConfig;
import org.nutz.mvc.adaptor.JsonAdaptor;
import org.nutz.mvc.adaptor.PairAdaptor;
import org.nutz.mvc.impl.processor.AbstractProcessor;
import org.nutz.mvc.upload.UploadAdaptor;
/**增强版的AdaptorProcessor,灵活处理转换异常*/
public class EnhanceAdaptorProcessor extends AbstractProcessor {
private static final Log log = Logs.get();
private HttpAdaptor adaptor;
@Override
public void init(NutConfig config, ActionInfo ai) throws Throwable {
adaptor = evalHttpAdaptor(config, ai);
}
public void process(ActionContext ac) throws Throwable {
List<String> phArgs = ac.getPathArgs();
Object[] args = null;
try {
args = adaptor.adapt( ac.getServletContext(),
ac.getRequest(),
ac.getResponse(),
phArgs.toArray(new String[phArgs.size()]));
ac.setMethodArgs(args);
} catch (Throwable e) {
if (log.isInfoEnabled())
log.info("adaptor error", e);
Map<String, Object> map = new HashMap<String, Object>();
map.put("error", e);
map.put("msg", e.getMessage());
if (adaptor instanceof UploadAdaptor) {//首先,看看是不是上传导致的错误
map.put("errType", "upload");
} else if (adaptor instanceof JsonAdaptor) { //还是Json读取错误呢?
map.put("errType", "json");
} else { //还是其他类型错误呢?
Throwable e2 = Lang.unwrapThrow(e);
if (e2 instanceof NumberFormatException) { //数字格式错误
map.put("errType", "number");
} else if (e2 instanceof DataFormatException) { //日期格式错误
map.put("errType", "date");
} else { //其他,不知道了... 内部错误?
map.put("errType", "unknow");
}
}
//渲染去
new SmartView("/error/adaptor").render(ac.getRequest(), ac.getResponse(), map);
return;
}
doNext(ac);
}
protected static HttpAdaptor evalHttpAdaptor(NutConfig config, ActionInfo ai) {
HttpAdaptor re = evalObj(config, ai.getAdaptorInfo());
if (null == re)
re = new PairAdaptor();
re.init(ai.getMethod());
return re;
}
}