标签:结构 使用 cat commons error one users 框架搭建 service
15.1、原理步骤
15.2、实现(这里采用了SHA256算法,其他摘要算法MD5/SHA1/MAC类似)
注意:这里的程序是在我之前写的一个maven+spring+springmvc+mybatis+velocity整合的文章上进行的修改,具体的框架搭建以及数据库表结构等就不再啰嗦了,自己参考下边这篇博客:
http://www.cnblogs.com/java-zhao/p/5096811.html
这里只列出Java类。整个代码结构如下:
UserController
package com.xxx.web; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.servlet.ModelAndView; import com.xxx.model.User; import com.xxx.service.UserService; @Controller @RequestMapping("user") public class UserController { @Autowired private UserService userService; @ResponseBody @RequestMapping("register") public boolean register(@RequestParam("username") String username, @RequestParam("password") String password){ return userService.register(username, password); } @RequestMapping("login") public ModelAndView login(@RequestParam("username") String username, @RequestParam("password") String password){ User user = userService.login(username, password); ModelAndView modelAndView = new ModelAndView(); if(user == null){ modelAndView.addObject("message", "用户不存在或者密码错误!请重新输入"); modelAndView.setViewName("error"); }else{ modelAndView.addObject("user", user); modelAndView.setViewName("userinfo"); } return modelAndView; } }
UserService(这里是加解密的主战场)
package com.xxx.service; import java.io.UnsupportedEncodingException; import java.security.NoSuchAlgorithmException; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.util.encoder.ShaEncoder; import com.xxx.dao.UserDAO; import com.xxx.model.User; @Service public class UserService { @Autowired private UserDAO userDao; public boolean register(String username, String password){ User user = new User(); user.setUsername(username); try { user.setPassword(ShaEncoder.encodeSHAHex(password));//对密码进行sha256加密 } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return userDao.register(user); } public User login(String username, String password) { User user = null; try { user = userDao.login(username, ShaEncoder.encodeSHAHex(password));//对密码进行sha256加密 } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return user; } }
UserDAO
package com.xxx.dao; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Repository; import com.xxx.mapper.UserMapper; import com.xxx.model.User; @Repository public class UserDAO { @Autowired private UserMapper userMapper; public boolean register(User user){ return userMapper.insertUser(user)==1?true:false; } public User login(String username ,String password){ return userMapper.selectByUsernameAndPwd(username, password); } }
UserMapper
package com.xxx.mapper; import org.apache.ibatis.annotations.Insert; import org.apache.ibatis.annotations.Param; import org.apache.ibatis.annotations.Result; import org.apache.ibatis.annotations.Results; import org.apache.ibatis.annotations.Select; import com.xxx.model.User; public interface UserMapper { @Insert("INSERT INTO userinfo(username, password) VALUES(#{username},#{password})") public int insertUser(User user); @Select("SELECT * FROM userinfo WHERE username = #{username} AND password = #{password}") @Results(value = { @Result(id = true, column = "id", property = "id"), @Result(column = "username", property = "username"), @Result(column = "password", property = "password")}) public User selectByUsernameAndPwd(@Param("username")String username ,@Param("password")String password); }
ShaEncoder(这里基于Commons Codec,即CC实现的Sha256工具类)
package com.util.encoder; import java.io.UnsupportedEncodingException; import java.security.NoSuchAlgorithmException; import org.apache.commons.codec.digest.DigestUtils; public class ShaEncoder { private static final String ENCODING = "UTF-8"; public static String encodeSHAHex(String data) throws NoSuchAlgorithmException,UnsupportedEncodingException { return new String(DigestUtils.sha256Hex(data.getBytes(ENCODING))); } }
代码简单易懂,自己去看逻辑,然后进行测试即可。
当然我们还可以在上述代码的基础上,为密码加一点盐(即用一个字符串与密码相连),然后对加盐后的字符串进行加密。代码如下:
package com.xxx.service; import java.io.UnsupportedEncodingException; import java.security.NoSuchAlgorithmException; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.util.encoder.ShaEncoder; import com.xxx.dao.UserDAO; import com.xxx.model.User; @Service public class UserService { private static final String SALT = "nana";//盐 @Autowired private UserDAO userDao; public boolean register(String username, String password){ User user = new User(); user.setUsername(username); try { user.setPassword(ShaEncoder.encodeSHAHex(SALT+password));//对加盐的密码进行sha256加密 } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return userDao.register(user); } public User login(String username, String password) { User user = null; try { user = userDao.login(username, ShaEncoder.encodeSHAHex(SALT+password));//对加盐的密码进行sha256加密 } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return user; } }
当然,这里的盐是一个固定的字符串(在实际使用中,这样的做法最为常见),我们也可以对每个登录的用户使用他自己的姓名作为盐(这样每个人的盐就不一样了)。
标签:结构 使用 cat commons error one users 框架搭建 service
原文地址:http://www.cnblogs.com/sunny3096/p/7159696.html