这里举例的是简单和相对复杂的两种数据绑定
简单的
先配置一下springmvc-config.xml(主要代码)
<!-- 定义组件扫描器,指定需要扫描的包 -->
<context:component-scan base-package="com.itheima.controller" />
<!-- 定义视图解析器 -->
<bean id="viewResolver" class=
"org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 设置前缀 -->
<property name="prefix" value="/WEB-INF/jsp/" />
<!-- 设置后缀 -->
<property name="suffix" value=".jsp" />
</bean>
<!-- 显示的装配自定义类型转换器 -->
<mvc:annotation-driven conversion-service="conversionService" />
<bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
<property name="formatters">
<set>
<bean class="com.itheima.convert.DateFormatter" />
</set>
</property>
</bean>
配置Java文件(主要代码)
package com.itheima.controller;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import com.itheima.po.User;
import com.itheima.vo.UserVO;
@Controller
public class UserController {
@RequestMapping("/selectUser")
public String selectUser(HttpServletRequest request) {
String id = request.getParameter("id");
System.out.println("id="+id);
return "success";
}
}
显示界面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>结果页面</title>
</head>
<body>
ok
</body>
</html>
当你输入(如图所示)
批量删除用户的方法
修改Java代码为
@RequestMapping("/toUser")
public String selectUsers( ) {
return "user";
}
@RequestMapping("/deleteUsers")
public String deleteUsers(Integer[] ids) {
if(ids !=null){
for (Integer id : ids) {
System.out.println("删除了id为"+id+"的用户!");
}
}else{
System.out.println("ids=null");
}
return "success";
}
较为简单,都是书本上的例题