SpringMVC中form:select的使用

最新推荐文章于 2024-02-01 19:42:30 发布

iteye_5117

最新推荐文章于 2024-02-01 19:42:30 发布

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分类专栏： J2EE 文章标签： spring mvc maven

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最近使用Spring MVC的多，发下在Spring MVC下如何方便的使用下拉列表吧，其实还有其他好多功能，不过我就不一一说明了，大家到直接查看官方手册就能明白：
下面是我的Controller类：

package com.vito16.mvc1.controller;

import java.util.ArrayList;
import java.util.List;

import javax.validation.Valid;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.validation.ObjectError;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

import com.vito16.mvc1.model.User;

/**
 * @author Vito16 zhouwentao16@gmail.com
 * @date 2013-7-8
 * 
 */
@Controller
@RequestMapping("/user")
public class UserController {
	private static final Log logger = LogFactory.getLog(UserController.class);

	@RequestMapping(method = RequestMethod.GET)
	public String index() {
		return "user/index";
	}

	@RequestMapping("/list")
	public ModelAndView listUser(ModelAndView model) {
		List<User> userList = new ArrayList<User>();
		User user1 = new User();
		user1.setUsername("测试用户1");
		user1.setPassword("123");
		user1.setId(1);
		userList.add(user1);

		User user2 = new User();
		user2.setUsername("测试用户2");
		user2.setPassword("123");
		user2.setId(2);
		userList.add(user2);

		User user3 = new User();
		user3.setUsername("测试用户3");
		user3.setPassword("12333");
		user3.setId(3);
		userList.add(user3);

		User user = new User(2,null,null);

		model.addObject(userList).addObject(user);
		return model;
	}

	@RequestMapping("/new")
	public User newUser() {
		User user = new User();
		user.setUsername("请填写用户名");
		user.setPassword("");
		return user;
	}

	@RequestMapping(value = "/add", method = RequestMethod.POST)
	public String add(@Valid User user, BindingResult result) {
		if (result.hasErrors()) {
			logger.error("Java Bean 没有通过验证");
			for (ObjectError or : result.getAllErrors()) {
				logger.warn("验证类型:" + or.getCode() + " \t错误消息:"
						+ or.getDefaultMessage());
			}
			return "user/new";
		}
		logger.info("后台成功添加用户:" + user);
		return "redirect:/user";
	}
}

然后页面代码：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>用户选择</title>

</head>

<body>
	用户列表
	<form:select path="user.id" items="${userList}" itemLabel="username"
		itemValue="id"></form:select>
</body>
</html>