nativeactionservlet.java

这是《Struts网络编程实例》一书zhogn 的源代码部分

/*
 * Created on 2005-8-29
 *
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package org.ithinking.control;

import java.io.IOException;
import java.util.Locale;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionServlet;
import org.ithinking.datamanager.CheckDb;

//扩展了Struts的ActionServlet类，提供对页面缺省编码格式的支持
public class NativeActionServlet extends ActionServlet {
	public NativeActionServlet() {
	}

	public void init() throws ServletException {
		super.init();
		ServletContext servletcontext = getServletContext();
		//设置客户端的编码类型
		servletcontext.setAttribute("_CLIENT_LOCALE_",
				Locale.SIMPLIFIED_CHINESE);
		//获得web应用的名称
		String s = getServletContext().getInitParameter("webapp-name");
		//初始化数据库，检验基础数据是否存在
		CheckDb.initDb();
	}

	public void destroy() {
		super.destroy();
	}

	//扩展doGet方法，提供GB2312为缺省的编码格式
	public void doGet(HttpServletRequest httpservletrequest,
			HttpServletResponse httpservletresponse) throws IOException,
			ServletException {
		String s = getServletContext().getInitParameter("charset");
		if (s == null || s.length() == 0)
			s = httpservletrequest.getCharacterEncoding();
		if (s == null || s.length() == 0)
			s = "GB2312";
		httpservletrequest.setCharacterEncoding(s);
		super.process(httpservletrequest, httpservletresponse);
	}
	//扩展doPost方法，提供GB2312为缺省的编码格式
	public void doPost(HttpServletRequest httpservletrequest,
			HttpServletResponse httpservletresponse) throws IOException,
			ServletException {
		String s = getServletContext().getInitParameter("charset");
		if (s == null || s.length() == 0)
			s = httpservletrequest.getCharacterEncoding();
		if (s == null || s.length() == 0)
			s = "GB2312";
		httpservletrequest.setCharacterEncoding(s);
		super.process(httpservletrequest, httpservletresponse);
	}
}