Jodd是一个开源项目,http://jodd.sourceforge.net,有一个好用的jsp标签,可以大大简化有表单输入的controller。
使用Jodd的优点:
1.
简化和统一controller,抛弃extends SimpleFormController,统一使用implements Controller的方式。
2.
简化JSP页面的bind,不需要一个字段一个字段的绑定。
3.
对bean没有任何要求,可以使用任意的bean做为formBean.
使用方法简介:
1.把jodd.jar放到web-inf->lib下,在web.xml里声名标签:
<taglib>
<taglib-uri>jodd</taglib-uri>
<taglib-location>/WEB-INF/lib/jodd.jar</taglib-location>
</taglib>
2.任意的一个javaBean做为FormBean
package caike;
public class User {
private String userName;
private String password;
public String getPassword() {
return password;
}
public void setPassword(String pwd) {
this.password = pwd;
}
public String getUserName() {
return userName;
}
public void setUserName(String username) {
this.userName = username;
}
}
3.在JSP页面使用jodd tag:,比如对应用户登录页面的
<%@page import="caike.User"%>
<%@taglib uri="jodd" prefix="jodd"%>
<jodd:form beans="user" scopes="session">
<form action="my.htm" method="post" >
<table width="300" border="0" cellspacing="0" cellpadding="0"
align="center" class="white">
<tr>
<td height="32" align="right" width="107">用户名:</td>
<td height="32" width="193"><input type="text" name="userName"
class="input" size="20"> </td>
</tr>
<tr>
<td height="33" align="right" width="107">密码:</td>
<td height="33" width="193"><input type="password" name="password"
class="input" size="21"></td>
</tr>
<tr>
<td height="69" align="center" colspan="2">
<input type="submit" name="Submit" value="登录">
</tr>
</table>
</form>
</jodd:form>
4.Dispatch-servelt.xml中对controller的配置
<bean id="myController"
class="caike.MyController">
</bean>
不再需要这种方式:
<!--
<bean
id="myController" class="caike.MyFormController">
<property
name="commandClass" value="caike" />
<property
name="formView" value="userForm" />
</bean>
-->
5.在controller中取出user
package caike;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import jodd.bean.BeanUtil;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;
public class MyController implements Controller {
public ModelAndView handleRequest(HttpServletRequest request,
HttpServletResponse response) throws Exception {
User user = new User();
BeanUtil.load(user, request);
System.out.println("用户名:" + user.getUserName() + " 密码:" + user.getPassword());
return null;
}
}
需要注意的地方:
表单中对应的名字name和javaBean里对应的属性名要相同。
<input
type="text" name="userName"
class="input"
size="20">
public class User {
private
String userName;
.......
参考:
http://www.blogjava.net/calvin/archive/2005/08/24/10914.html
简化Spring(4)--View层