RequestProcessor 类的扩展

RequestProcessor 类的扩展

package com.bbs.struts.exts;

import java.io.UnsupportedEncodingException;

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

import org.apache.struts.action.ActionServlet;
import org.apache.struts.action.RequestProcessor;
import org.apache.struts.config.ModuleConfig;

import com.dd.util.DBConnection;

public class ExtRequestProcessor extends RequestProcessor{

	@Override
	public void init(ActionServlet servlet, ModuleConfig moduleConfig)
			throws ServletException {
		
		//从上下文中获得数据源
		Object obj = servlet.getServletContext().getAttribute("jdbc/sql");		
		DBConnection.initDataSource(obj);
		
		super.init(servlet, moduleConfig);
	}

        /**
	 * 国际化问题解决 processLocale
	 */
	protected void processLocale(HttpServletRequest request,
			HttpServletResponse response) {

	}

	/**
	 * 设置请求时的编码
	 * */
	protected boolean processPreprocess(HttpServletRequest request,
			HttpServletResponse response) {
		// TODO Auto-generated method stub
		String contentType = this.moduleConfig.getControllerConfig().getContentType();
		int index = contentType.lastIndexOf("=");
		String encode = contentType.substring(index+1, contentType.length());
		try {			
			request.setCharacterEncoding(encode);
		} catch (UnsupportedEncodingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return true;
	}
	
	/**
	 * 设置响应的字符编码
	 * */
	protected void processContent(HttpServletRequest request,HttpServletResponse response) {
		String contentType = moduleConfig.getControllerConfig().getContentType();		
		response.setContentType(contentType);
	}	

      
 /*
	 * 转移ActionForm的配制文件.
          *
	 * */
	Properties prop = null;
	protected ActionForm processActionForm(HttpServletRequest request,
			HttpServletResponse response, ActionMapping mapping) {

		ActionForm instance = null;

System.out.println(mapping.getName());

		if (prop == null) {
			String path = this.getServletContext().getRealPath(
					"/WEB-INF/file.properties");
			prop = new Properties();
			try {
				InputStream ins = new FileInputStream(path);

				prop.load(ins);

				ins.close();

			} catch (Exception e) {
				e.printStackTrace();
			}

			String formName = mapping.getName();
			String className = prop.getProperty(formName);

			try {
				Object obj = Class.forName(className).newInstance();
				if (obj != null) {
					instance = (ActionForm) obj;
				}
			} catch (Exception e) {
				e.printStackTrace();
			}
		}

		return (instance);

	}

}

当然那我想转移Action的配制文件那也可以的

struts_config.xml配制文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">

<struts-config>
  <data-sources />
  
  <form-beans/>
  <!--这里的FormBean 写在另外一个file.properties 文件以key/value 型式书写-->
  <global-exceptions />
  <global-forwards />
  
  <action-mappings>
  	<action path="/local" name="aa" type="com.dd.struts.action.DemoAction"></action>
  </action-mappings>
  
  <controller contentType="text/html;charset=GBK" processorClass="com.dd.struts.actions.ExtRequestProcessor"></controller>
  <message-resources parameter="com.dd.struts.ApplicationResources" />
</struts-config>