package org.nutz.integration;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import javax.servlet.ServletContext;
import org.nutz.ioc.Ioc;
import org.nutz.ioc.Ioc2;
import org.nutz.lang.Lang;
import org.nutz.lang.Mirror;
import org.nutz.log.Log;
import org.nutz.log.Logs;
import org.nutz.mvc.IocProvider;
import org.nutz.mvc.Mvcs;
import org.nutz.mvc.NutConfig;
import org.nutz.mvc.annotation.IocBy;
import org.nutz.mvc.config.AbstractNutConfig;
import org.nutz.mvc.impl.ServletValueProxyMaker;
public class Webs {
private static final Log log = Logs.get();
static Ioc ioc;
static final Object lock = new Object();
@SuppressWarnings("unchecked")
public static Ioc ioc() {
if (ioc != null)
return ioc;
synchronized (lock) {
if (ioc != null)
return ioc;
log.debug("Search for NutIoc");
ServletContext servletContext = Mvcs.getServletContext();
if (servletContext != null) {
String mainModule = servletContext.getInitParameter("nutz.modules");
if (mainModule != null)
try {
makeIoc(mainModule);
return ioc;
}
catch (ClassNotFoundException e) {
throw Lang.wrapThrow(e);
}
//也行我能直接拿到Ioc容器
ioc = Mvcs.getIoc();
if (ioc != null)
return ioc;
else {
//Search in servletContext.attr
Enumeration<String> names = servletContext.getAttributeNames();
while (names.hasMoreElements()) {
String attrName = (String) names.nextElement();
Object obj = servletContext.getAttribute(attrName);
if (obj instanceof Ioc) {
ioc = (Ioc)obj;
return ioc;
}
}
//还是没找到? 试试新版Mvcs.ctx
ioc = Mvcs.ctx.getDefaultIoc();
if (ioc != null) {
return ioc;
}
}
}
}
log.warn("No Ioc found!!");
throw new RuntimeException("NutIoc not found!!");
}
public static void makeIoc(String mainModule) throws ClassNotFoundException {
IocBy ib = Class.forName(mainModule).getAnnotation(IocBy.class);
if (ib == null)
throw new IllegalArgumentException("Need IocBy!!");
if (log.isDebugEnabled())
log.debugf("@IocBy(%s)", ib.type().getName());
makeIoc(ib.type(), ib.args());
}
public static void makeIoc(Class<? extends IocProvider> clazz, String[] args) {
final ServletContext context = Mvcs.getServletContext();
NutConfig config = new AbstractNutConfig(context) {
public ServletContext getServletContext() {
return context;
}
public List<String> getInitParameterNames() {
return new ArrayList<String>(0);
}
public String getInitParameter(String name) {
return null;
}
public String getAppName() {
return "struts-nutz";
}
};
ioc = Mirror.me(clazz).born().create(config, args);
// 如果是 Ioc2 的实现，增加新的 ValueMaker
if (ioc instanceof Ioc2) {
((Ioc2) ioc).addValueProxyMaker(new ServletValueProxyMaker(config.getServletContext()));
}
}
}