Java中使用Servlet的是否最烦的是表单数据太多的的是否自己写代码封装数据太麻烦，于是写了一个解析request中的数据封装成对象的工具类方法，代码如下：
1、工具类代码：
package com.crazyiter.mssp.utils;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.beanutils.BeanUtils;
/**
* 取得request对象中 所有的参数值并生成 一个相应的对象返回
* @author john
*
*/
@SuppressWarnings("all")
public class ParseHtml {
/**
* Class<T> beanClass可以接受任何类型的javaBean,使用泛型调用者不用进行强转
* @param <T>
* @param request
* @param beanClass
* @return
*/
public static <T> T request2Bean(HttpServletRequest request, Class<T> beanClass) {
try {
/**创建封装数据的bean**/
T bean = beanClass.newInstance();
Map map = request.getParameterMap();
BeanUtils.populate(bean, map);
return bean;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
2、使用代码：
package com.crazyiter.mssp.action;
import java.io.IOException;
import java.lang.reflect.Method;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.crazyiter.mssp.common.ReflectionUtils;
import com.crazyiter.mssp.domain.SmsConfig;
import com.crazyiter.mssp.service.SmsService;
import com.crazyiter.mssp.utils.ParseHtml;
/**
* 用户管理Controller
* @author john
*/
@SuppressWarnings("serial")
public class SmsConfigAction extends HttpServlet {
SmsService smsService = new SmsService();
/**
* 根据短信配置信息
*/
public void getsmsconfig(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {
SmsConfig smsConfig = smsService.getSmsConfig();
request.setAttribute("smsconfig", smsConfig);
request.getRequestDispatcher("view/smsconfig/edit.jsp").forward(request,response);
}
/**
* 修改短信配置信息
*/
public void updatesmsconfig(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {
SmsConfig sc = (SmsConfig)ParseHtml.request2Bean(request, SmsConfig.class);
System.out.println(sc.getUrl());
request.getRequestDispatcher("index.jsp").forward(request,response);
}
/**
* 短信数据Controller过滤器
*/
public void service(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
String cmd = request.getParameter("cmd");
Method method = ReflectionUtils.getDeclaredMethod(SmsConfigAction.class, cmd);
try {
if(method!=null){
method.invoke(new SmsConfigAction(),request, response);
}else{
request.getRequestDispatcher("index.jsp").forward(request,response);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
注意：上面的绿色部分为主要实现代码。