基于注解的数据绑定测试与@SessionAttributes注解的使用

 代码：

index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>







数据绑定测试
测试@PathVariable注解


测试@RequestHeader注解


测试@CookieValue注解

loginForm.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>







测试@SessionAttributes注解

     

         

         	
登录名: 
             

         
         

         	
密码: 
             

         
         

             

         
     

welcome.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>







访问request作用范围域中的user对象：${requestScope.user.username }

访问session作用范围域中的user对象：${sessionScope.user.username }

User.java

package org.fkit.domain;

import java.io.Serializable;
//域对象，实现序列化接口
public class User implements Serializable {
	// 私有字段
    private String loginname;
	private String password;
	private String username;
	public User() {
		super();
		// TODO Auto-generated constructor stub
	}
	public String getLoginname() {
		return loginname;
	}
	public void setLoginname(String loginname) {
		this.loginname = loginname;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	
}

DataBindingController.java

package org.fkit.controller;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CookieValue;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;

// Controller注解用于指示该类是一个控制器，可以同时处理多个请求动作
@Controller
public class DataBindingController{

	// 静态的日志类LogFactory
	private static final Log logger = LogFactory.getLog(DataBindingController.class);

	// 测试@PathVariable注解
	// 该方法映射的请求为http://localhost:8080/DataBindingTest/pathVariableTest/{userId}
	@RequestMapping(value="/pathVariableTest/{userId}")
	 public void pathVariableTest(@PathVariable Integer userId) {
		 logger.info("通过@PathVariable获得数据： " + userId);
	 }
	
	// 测试@RequestHeader注解
	// 该方法映射的请求为http://localhost:8080/DataBindingTest/requestHeaderTest
	@RequestMapping(value="/requestHeaderTest")
	 public void requestHeaderTest(
			 @RequestHeader("User-Agent") String userAgent,  
		     @RequestHeader(value="Accept") String[] accepts) {
		 logger.info("通过@requestHeaderTest获得数据： " + userAgent);
		 for(String accept : accepts){
			 logger.info(accept);
		 }
	 }
	
	// 测试@CookieValue注解
	@RequestMapping(value="/cookieValueTest")
	 public void cookieValueTest( @CookieValue(value="JSESSIONID", defaultValue="") String sessionId) {
		 logger.info("通过@requestHeaderTest获得数据： " + sessionId);
	 }


}

SessionAttributesController.java

package org.fkit.controller;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.fkit.domain.User;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.SessionAttributes;

// Controller注解用于指示该类是一个控制器，可以同时处理多个请求动作
@Controller
// 将Model中的属性名为user的放入HttpSession对象当中
@SessionAttributes("user")
public class SessionAttributesController{

	// 静态的日志类LogFactory
	private static final Log logger = LogFactory.getLog(SessionAttributesController.class);
	
	// 该方法映射的请求为http://localhost:8080/DataBindingTest/{formName}
	@RequestMapping(value="/{formName}")
	 public String loginForm(@PathVariable String formName){
		// 动态跳转页面
		return formName;
	}

	// 该方法映射的请求为http://localhost:8080/DataBindingTest/login
	@RequestMapping(value="/login")
	 public String login(
			 @RequestParam("loginname") String loginname,
			 @RequestParam("password") String password,
			 Model model ) {
		 // 创建User对象，装载用户信息
		 User user = new User();
		 user.setLoginname(loginname);
		 user.setPassword(password);
		 user.setUsername("admin");
		 // 将user对象添加到Model当中
		 model.addAttribute("user",user);
		 return "welcome";
	 }
	
	

}

截图：

                                 测试@PathVariable注解

                                 测试@RequestHeader注解

                                   测试@CookieValue注解