How to realize the user login function of CRM system? Java advanced project practice must learn

Keywords: Java JSON

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Background code implementation of user login function:

User mapper interface query method definition

/**
 * 
 * @param userName
 * @param userPwd
 * @param roleName
 * Query user records
 * @return
 */
User queryUser(@Param("userName")String userName);
 
<!-- Query users -->
<select id="queryUser" resultMap="BaseResultMap">
     select <include refid="Base_Column_List"/>
        from t_user where user_name =#{userName} 
</select>

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Implementation of service layer login method

 @Resource
private UserDao userDao;
 
 /**
 * User login
 * @param userName
 * @param userPwd
 * @param roleName
 * @return
 */
@SuppressWarnings({ "unchecked", "rawtypes" })
public UserModel userLoginCheck(String userName,String userPwd){
 /**
     * 1.Parameter validity verification
     * 2.Query user validity verification
     * 3.password verifiers 
     * 4.Return user model information
     */
 // Parameter verification
    checkParam(userName,userPwd);
 // Execute query
 
    User user=userDao.queryUser(userName);
 // User existence verification
    AssertUtil.isTrue(null==user, "The user does not exist!"); 
    AssertUtil.isTrue(user.getIsValid()==0, "Logged out to user!");
 //password verifiers 
    AssertUtil.isTrue(!user.getUserPwd().equals(MD5Util.md5Method(userPwd)),"Incorrect password!");
 // Building user information model
    UserModel userModel=buildUserModel(user);
 return userModel; 
}
 
/**
 * Login parameter verification
 * @param userName
 * @param userPwd
 * @param roleName
 */
private void checkParam(String userName, String userPwd, Integer roleId) {
    AssertUtil.isTrue(StringUtil.isNullOrEmpty(userName), "User name is not empty!");
    AssertUtil.isTrue(StringUtil.isNullOrEmpty(userPwd), "Password is not empty!");
}
 
/**
 * Building user login data model
 * @param user
 * @return
 */
private UserModel buildUserModel(User user) {
    UserModel userModel=new UserModel(); 
    userModel.setRoleName(user.getRoleName());
    userModel.setUserName(user.getUserName());
    userModel.setTrueName(user.getTrueName());
    String userIdStr=UserIDBase64.encoderUserID(user.getId());
    userModel.setUserIdStr(userIdStr);
 return userModel;
}
 

 

UserController layer

package com.shsxt.crm.controller;
 
import javax.annotation.Resource;
 
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.shsxt.base.BaseController;
import com.shsxt.base.ResultInfo;
import com.shsxt.base.exception.ParamException;
import com.shsxt.crm.model.UserModel;
import com.shsxt.crm.service.UserService;
 
@Controller
@RequestMapping("user")
public class UserController extends BaseController {
 
    @Resource
private UserService userService;
@RequestMapping("userLogin")
public @ResponseBody MessageModel userLogin(String userName,
        String userPwd){
    MessageModel resultInfo=null;
 try {
        UserModel userModel= userService.userLoginCheck(userName, userPwd);
        resultInfo=success();
        resultInfo.setResult(userModel);
 } catch (ParamsException e) {
        e.printStackTrace();
        resultInfo=failed(e.getMessage());
 } 
 return resultInfo;
} 
 
}

 

Foreground js control form submission

Bind submit button click event

// Submit binding event
$(function(){
    $("#btnLogin").click(function(){ 
 var userName=$("#userName").val();
 var userPwd=$("#userPwd").val();
 if(isEmpty(userName)){
 alert("User name is not empty!");
 return;
 }
 
 if(isEmpty(userPwd)){
 alert("Password is not empty!");
 return;
 } 
 
 var param={};
        param.userName=userName;
        param.userPwd=userPwd; 
             $.ajax({
            type:"post",
            url:"user/userLogin",
            data:param,
            dataType:"json",
            success:function(data){
 if(data.resultCode==200){
 /**
                     * Login successful
                     * Write cookie
                     */
                    $.cookie("userName",data.result.userName);
                    $.cookie("trueName",data.result.trueName);
                    $.cookie("userIdStr",data.result.userIdStr); 
 // Perform jump
 window.location.href="main";
 }else{
 alert(data.msg);
 }
 } 
 })
 })
})

 

Deploy project, perform login operation

Login success cookie write success

Login succeeded, jump to background management page

Finally note: the theory of light is not enough. By the way, I'd like to present you ten sets of practical tutorials and interview question bank of the latest JAVA architecture project in 2020, which can be found under the transformation of seven bar umbrella bar and Zero clothing umbrella (Digital homophony), and also can communicate with the old architect
The text and pictures of this article come from the Internet and my own ideas. They are only for learning and communication. They have no commercial use. The copyright belongs to the original author. If you have any questions, please contact us in time for handling

Posted by Jamez on Sat, 16 May 2020 07:26:10 -0700